SC *y, t;
is allowed.
+
+
+CMPXCHG vs TRY_CMPXCHG
+----------------------
+
+ int atomic_cmpxchg(atomic_t *ptr, int old, int new);
+ bool atomic_try_cmpxchg(atomic_t *ptr, int *oldp, int new);
+
+Both provide the same functionality, but try_cmpxchg() can lead to more
+compact code. The functions relate like:
+
+ bool atomic_try_cmpxchg(atomic_t *ptr, int *oldp, int new)
+ {
+ int ret, old = *oldp;
+ ret = atomic_cmpxchg(ptr, old, new);
+ if (ret != old)
+ *oldp = ret;
+ return ret == old;
+ }
+
+and:
+
+ int atomic_cmpxchg(atomic_t *ptr, int old, int new)
+ {
+ (void)atomic_try_cmpxchg(ptr, &old, new);
+ return old;
+ }
+
+Usage:
+
+ old = atomic_read(&v); old = atomic_read(&v);
+ for (;;) { do {
+ new = func(old); new = func(old);
+ tmp = atomic_cmpxchg(&v, old, new); } while (!atomic_try_cmpxchg(&v, &old, new));
+ if (tmp == old)
+ break;
+ old = tmp;
+ }
+
+NB. try_cmpxchg() also generates better code on some platforms (notably x86)
+where the function more closely matches the hardware instruction.
+
+
+FORWARD PROGRESS
+----------------
+
+In general strong forward progress is expected of all unconditional atomic
+operations -- those in the Arithmetic and Bitwise classes and xchg(). However
+a fair amount of code also requires forward progress from the conditional
+atomic operations.
+
+Specifically 'simple' cmpxchg() loops are expected to not starve one another
+indefinitely. However, this is not evident on LL/SC architectures, because
+while an LL/SC architecure 'can/should/must' provide forward progress
+guarantees between competing LL/SC sections, such a guarantee does not
+transfer to cmpxchg() implemented using LL/SC. Consider:
+
+ old = atomic_read(&v);
+ do {
+ new = func(old);
+ } while (!atomic_try_cmpxchg(&v, &old, new));
+
+which on LL/SC becomes something like:
+
+ old = atomic_read(&v);
+ do {
+ new = func(old);
+ } while (!({
+ volatile asm ("1: LL %[oldval], %[v]\n"
+ " CMP %[oldval], %[old]\n"
+ " BNE 2f\n"
+ " SC %[new], %[v]\n"
+ " BNE 1b\n"
+ "2:\n"
+ : [oldval] "=&r" (oldval), [v] "m" (v)
+ : [old] "r" (old), [new] "r" (new)
+ : "memory");
+ success = (oldval == old);
+ if (!success)
+ old = oldval;
+ success; }));
+
+However, even the forward branch from the failed compare can cause the LL/SC
+to fail on some architectures, let alone whatever the compiler makes of the C
+loop body. As a result there is no guarantee what so ever the cacheline
+containing @v will stay on the local CPU and progress is made.
+
+Even native CAS architectures can fail to provide forward progress for their
+primitive (See Sparc64 for an example).
+
+Such implementations are strongly encouraged to add exponential backoff loops
+to a failed CAS in order to ensure some progress. Affected architectures are
+also strongly encouraged to inspect/audit the atomic fallbacks, refcount_t and
+their locking primitives.
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-
-// Generated by scripts/atomic/gen-atomic-long.sh
-// DO NOT MODIFY THIS FILE DIRECTLY
-
-#ifndef _ASM_GENERIC_ATOMIC_LONG_H
-#define _ASM_GENERIC_ATOMIC_LONG_H
-
-#include <linux/compiler.h>
-#include <asm/types.h>
-
-#ifdef CONFIG_64BIT
-typedef atomic64_t atomic_long_t;
-#define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
-#define atomic_long_cond_read_acquire atomic64_cond_read_acquire
-#define atomic_long_cond_read_relaxed atomic64_cond_read_relaxed
-#else
-typedef atomic_t atomic_long_t;
-#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
-#define atomic_long_cond_read_acquire atomic_cond_read_acquire
-#define atomic_long_cond_read_relaxed atomic_cond_read_relaxed
-#endif
-
-#ifdef CONFIG_64BIT
-
-static __always_inline long
-atomic_long_read(const atomic_long_t *v)
-{
- return atomic64_read(v);
-}
-
-static __always_inline long
-atomic_long_read_acquire(const atomic_long_t *v)
-{
- return atomic64_read_acquire(v);
-}
-
-static __always_inline void
-atomic_long_set(atomic_long_t *v, long i)
-{
- atomic64_set(v, i);
-}
-
-static __always_inline void
-atomic_long_set_release(atomic_long_t *v, long i)
-{
- atomic64_set_release(v, i);
-}
-
-static __always_inline void
-atomic_long_add(long i, atomic_long_t *v)
-{
- atomic64_add(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return(long i, atomic_long_t *v)
-{
- return atomic64_add_return(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return_acquire(long i, atomic_long_t *v)
-{
- return atomic64_add_return_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return_release(long i, atomic_long_t *v)
-{
- return atomic64_add_return_release(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_add_return_relaxed(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add(long i, atomic_long_t *v)
-{
- return atomic64_fetch_add(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_acquire(long i, atomic_long_t *v)
-{
- return atomic64_fetch_add_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_release(long i, atomic_long_t *v)
-{
- return atomic64_fetch_add_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_fetch_add_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_sub(long i, atomic_long_t *v)
-{
- atomic64_sub(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return(long i, atomic_long_t *v)
-{
- return atomic64_sub_return(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return_acquire(long i, atomic_long_t *v)
-{
- return atomic64_sub_return_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return_release(long i, atomic_long_t *v)
-{
- return atomic64_sub_return_release(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_sub_return_relaxed(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub(long i, atomic_long_t *v)
-{
- return atomic64_fetch_sub(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub_acquire(long i, atomic_long_t *v)
-{
- return atomic64_fetch_sub_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub_release(long i, atomic_long_t *v)
-{
- return atomic64_fetch_sub_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_fetch_sub_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_inc(atomic_long_t *v)
-{
- atomic64_inc(v);
-}
-
-static __always_inline long
-atomic_long_inc_return(atomic_long_t *v)
-{
- return atomic64_inc_return(v);
-}
-
-static __always_inline long
-atomic_long_inc_return_acquire(atomic_long_t *v)
-{
- return atomic64_inc_return_acquire(v);
-}
-
-static __always_inline long
-atomic_long_inc_return_release(atomic_long_t *v)
-{
- return atomic64_inc_return_release(v);
-}
-
-static __always_inline long
-atomic_long_inc_return_relaxed(atomic_long_t *v)
-{
- return atomic64_inc_return_relaxed(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc(atomic_long_t *v)
-{
- return atomic64_fetch_inc(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc_acquire(atomic_long_t *v)
-{
- return atomic64_fetch_inc_acquire(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc_release(atomic_long_t *v)
-{
- return atomic64_fetch_inc_release(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc_relaxed(atomic_long_t *v)
-{
- return atomic64_fetch_inc_relaxed(v);
-}
-
-static __always_inline void
-atomic_long_dec(atomic_long_t *v)
-{
- atomic64_dec(v);
-}
-
-static __always_inline long
-atomic_long_dec_return(atomic_long_t *v)
-{
- return atomic64_dec_return(v);
-}
-
-static __always_inline long
-atomic_long_dec_return_acquire(atomic_long_t *v)
-{
- return atomic64_dec_return_acquire(v);
-}
-
-static __always_inline long
-atomic_long_dec_return_release(atomic_long_t *v)
-{
- return atomic64_dec_return_release(v);
-}
-
-static __always_inline long
-atomic_long_dec_return_relaxed(atomic_long_t *v)
-{
- return atomic64_dec_return_relaxed(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec(atomic_long_t *v)
-{
- return atomic64_fetch_dec(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec_acquire(atomic_long_t *v)
-{
- return atomic64_fetch_dec_acquire(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec_release(atomic_long_t *v)
-{
- return atomic64_fetch_dec_release(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec_relaxed(atomic_long_t *v)
-{
- return atomic64_fetch_dec_relaxed(v);
-}
-
-static __always_inline void
-atomic_long_and(long i, atomic_long_t *v)
-{
- atomic64_and(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and(long i, atomic_long_t *v)
-{
- return atomic64_fetch_and(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and_acquire(long i, atomic_long_t *v)
-{
- return atomic64_fetch_and_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and_release(long i, atomic_long_t *v)
-{
- return atomic64_fetch_and_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_fetch_and_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_andnot(long i, atomic_long_t *v)
-{
- atomic64_andnot(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot(long i, atomic_long_t *v)
-{
- return atomic64_fetch_andnot(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot_acquire(long i, atomic_long_t *v)
-{
- return atomic64_fetch_andnot_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
-{
- return atomic64_fetch_andnot_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_fetch_andnot_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_or(long i, atomic_long_t *v)
-{
- atomic64_or(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or(long i, atomic_long_t *v)
-{
- return atomic64_fetch_or(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or_acquire(long i, atomic_long_t *v)
-{
- return atomic64_fetch_or_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or_release(long i, atomic_long_t *v)
-{
- return atomic64_fetch_or_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_fetch_or_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_xor(long i, atomic_long_t *v)
-{
- atomic64_xor(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor(long i, atomic_long_t *v)
-{
- return atomic64_fetch_xor(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor_acquire(long i, atomic_long_t *v)
-{
- return atomic64_fetch_xor_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor_release(long i, atomic_long_t *v)
-{
- return atomic64_fetch_xor_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor_relaxed(long i, atomic_long_t *v)
-{
- return atomic64_fetch_xor_relaxed(i, v);
-}
-
-static __always_inline long
-atomic_long_xchg(atomic_long_t *v, long i)
-{
- return atomic64_xchg(v, i);
-}
-
-static __always_inline long
-atomic_long_xchg_acquire(atomic_long_t *v, long i)
-{
- return atomic64_xchg_acquire(v, i);
-}
-
-static __always_inline long
-atomic_long_xchg_release(atomic_long_t *v, long i)
-{
- return atomic64_xchg_release(v, i);
-}
-
-static __always_inline long
-atomic_long_xchg_relaxed(atomic_long_t *v, long i)
-{
- return atomic64_xchg_relaxed(v, i);
-}
-
-static __always_inline long
-atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
-{
- return atomic64_cmpxchg(v, old, new);
-}
-
-static __always_inline long
-atomic_long_cmpxchg_acquire(atomic_long_t *v, long old, long new)
-{
- return atomic64_cmpxchg_acquire(v, old, new);
-}
-
-static __always_inline long
-atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
-{
- return atomic64_cmpxchg_release(v, old, new);
-}
-
-static __always_inline long
-atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
-{
- return atomic64_cmpxchg_relaxed(v, old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
-{
- return atomic64_try_cmpxchg(v, (s64 *)old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
-{
- return atomic64_try_cmpxchg_acquire(v, (s64 *)old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
-{
- return atomic64_try_cmpxchg_release(v, (s64 *)old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
-{
- return atomic64_try_cmpxchg_relaxed(v, (s64 *)old, new);
-}
-
-static __always_inline bool
-atomic_long_sub_and_test(long i, atomic_long_t *v)
-{
- return atomic64_sub_and_test(i, v);
-}
-
-static __always_inline bool
-atomic_long_dec_and_test(atomic_long_t *v)
-{
- return atomic64_dec_and_test(v);
-}
-
-static __always_inline bool
-atomic_long_inc_and_test(atomic_long_t *v)
-{
- return atomic64_inc_and_test(v);
-}
-
-static __always_inline bool
-atomic_long_add_negative(long i, atomic_long_t *v)
-{
- return atomic64_add_negative(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
-{
- return atomic64_fetch_add_unless(v, a, u);
-}
-
-static __always_inline bool
-atomic_long_add_unless(atomic_long_t *v, long a, long u)
-{
- return atomic64_add_unless(v, a, u);
-}
-
-static __always_inline bool
-atomic_long_inc_not_zero(atomic_long_t *v)
-{
- return atomic64_inc_not_zero(v);
-}
-
-static __always_inline bool
-atomic_long_inc_unless_negative(atomic_long_t *v)
-{
- return atomic64_inc_unless_negative(v);
-}
-
-static __always_inline bool
-atomic_long_dec_unless_positive(atomic_long_t *v)
-{
- return atomic64_dec_unless_positive(v);
-}
-
-static __always_inline long
-atomic_long_dec_if_positive(atomic_long_t *v)
-{
- return atomic64_dec_if_positive(v);
-}
-
-#else /* CONFIG_64BIT */
-
-static __always_inline long
-atomic_long_read(const atomic_long_t *v)
-{
- return atomic_read(v);
-}
-
-static __always_inline long
-atomic_long_read_acquire(const atomic_long_t *v)
-{
- return atomic_read_acquire(v);
-}
-
-static __always_inline void
-atomic_long_set(atomic_long_t *v, long i)
-{
- atomic_set(v, i);
-}
-
-static __always_inline void
-atomic_long_set_release(atomic_long_t *v, long i)
-{
- atomic_set_release(v, i);
-}
-
-static __always_inline void
-atomic_long_add(long i, atomic_long_t *v)
-{
- atomic_add(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return(long i, atomic_long_t *v)
-{
- return atomic_add_return(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return_acquire(long i, atomic_long_t *v)
-{
- return atomic_add_return_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return_release(long i, atomic_long_t *v)
-{
- return atomic_add_return_release(i, v);
-}
-
-static __always_inline long
-atomic_long_add_return_relaxed(long i, atomic_long_t *v)
-{
- return atomic_add_return_relaxed(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add(long i, atomic_long_t *v)
-{
- return atomic_fetch_add(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_acquire(long i, atomic_long_t *v)
-{
- return atomic_fetch_add_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_release(long i, atomic_long_t *v)
-{
- return atomic_fetch_add_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_relaxed(long i, atomic_long_t *v)
-{
- return atomic_fetch_add_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_sub(long i, atomic_long_t *v)
-{
- atomic_sub(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return(long i, atomic_long_t *v)
-{
- return atomic_sub_return(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return_acquire(long i, atomic_long_t *v)
-{
- return atomic_sub_return_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return_release(long i, atomic_long_t *v)
-{
- return atomic_sub_return_release(i, v);
-}
-
-static __always_inline long
-atomic_long_sub_return_relaxed(long i, atomic_long_t *v)
-{
- return atomic_sub_return_relaxed(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub(long i, atomic_long_t *v)
-{
- return atomic_fetch_sub(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub_acquire(long i, atomic_long_t *v)
-{
- return atomic_fetch_sub_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub_release(long i, atomic_long_t *v)
-{
- return atomic_fetch_sub_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_sub_relaxed(long i, atomic_long_t *v)
-{
- return atomic_fetch_sub_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_inc(atomic_long_t *v)
-{
- atomic_inc(v);
-}
-
-static __always_inline long
-atomic_long_inc_return(atomic_long_t *v)
-{
- return atomic_inc_return(v);
-}
-
-static __always_inline long
-atomic_long_inc_return_acquire(atomic_long_t *v)
-{
- return atomic_inc_return_acquire(v);
-}
-
-static __always_inline long
-atomic_long_inc_return_release(atomic_long_t *v)
-{
- return atomic_inc_return_release(v);
-}
-
-static __always_inline long
-atomic_long_inc_return_relaxed(atomic_long_t *v)
-{
- return atomic_inc_return_relaxed(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc(atomic_long_t *v)
-{
- return atomic_fetch_inc(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc_acquire(atomic_long_t *v)
-{
- return atomic_fetch_inc_acquire(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc_release(atomic_long_t *v)
-{
- return atomic_fetch_inc_release(v);
-}
-
-static __always_inline long
-atomic_long_fetch_inc_relaxed(atomic_long_t *v)
-{
- return atomic_fetch_inc_relaxed(v);
-}
-
-static __always_inline void
-atomic_long_dec(atomic_long_t *v)
-{
- atomic_dec(v);
-}
-
-static __always_inline long
-atomic_long_dec_return(atomic_long_t *v)
-{
- return atomic_dec_return(v);
-}
-
-static __always_inline long
-atomic_long_dec_return_acquire(atomic_long_t *v)
-{
- return atomic_dec_return_acquire(v);
-}
-
-static __always_inline long
-atomic_long_dec_return_release(atomic_long_t *v)
-{
- return atomic_dec_return_release(v);
-}
-
-static __always_inline long
-atomic_long_dec_return_relaxed(atomic_long_t *v)
-{
- return atomic_dec_return_relaxed(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec(atomic_long_t *v)
-{
- return atomic_fetch_dec(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec_acquire(atomic_long_t *v)
-{
- return atomic_fetch_dec_acquire(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec_release(atomic_long_t *v)
-{
- return atomic_fetch_dec_release(v);
-}
-
-static __always_inline long
-atomic_long_fetch_dec_relaxed(atomic_long_t *v)
-{
- return atomic_fetch_dec_relaxed(v);
-}
-
-static __always_inline void
-atomic_long_and(long i, atomic_long_t *v)
-{
- atomic_and(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and(long i, atomic_long_t *v)
-{
- return atomic_fetch_and(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and_acquire(long i, atomic_long_t *v)
-{
- return atomic_fetch_and_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and_release(long i, atomic_long_t *v)
-{
- return atomic_fetch_and_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_and_relaxed(long i, atomic_long_t *v)
-{
- return atomic_fetch_and_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_andnot(long i, atomic_long_t *v)
-{
- atomic_andnot(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot(long i, atomic_long_t *v)
-{
- return atomic_fetch_andnot(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot_acquire(long i, atomic_long_t *v)
-{
- return atomic_fetch_andnot_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
-{
- return atomic_fetch_andnot_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_andnot_relaxed(long i, atomic_long_t *v)
-{
- return atomic_fetch_andnot_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_or(long i, atomic_long_t *v)
-{
- atomic_or(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or(long i, atomic_long_t *v)
-{
- return atomic_fetch_or(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or_acquire(long i, atomic_long_t *v)
-{
- return atomic_fetch_or_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or_release(long i, atomic_long_t *v)
-{
- return atomic_fetch_or_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_or_relaxed(long i, atomic_long_t *v)
-{
- return atomic_fetch_or_relaxed(i, v);
-}
-
-static __always_inline void
-atomic_long_xor(long i, atomic_long_t *v)
-{
- atomic_xor(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor(long i, atomic_long_t *v)
-{
- return atomic_fetch_xor(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor_acquire(long i, atomic_long_t *v)
-{
- return atomic_fetch_xor_acquire(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor_release(long i, atomic_long_t *v)
-{
- return atomic_fetch_xor_release(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_xor_relaxed(long i, atomic_long_t *v)
-{
- return atomic_fetch_xor_relaxed(i, v);
-}
-
-static __always_inline long
-atomic_long_xchg(atomic_long_t *v, long i)
-{
- return atomic_xchg(v, i);
-}
-
-static __always_inline long
-atomic_long_xchg_acquire(atomic_long_t *v, long i)
-{
- return atomic_xchg_acquire(v, i);
-}
-
-static __always_inline long
-atomic_long_xchg_release(atomic_long_t *v, long i)
-{
- return atomic_xchg_release(v, i);
-}
-
-static __always_inline long
-atomic_long_xchg_relaxed(atomic_long_t *v, long i)
-{
- return atomic_xchg_relaxed(v, i);
-}
-
-static __always_inline long
-atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
-{
- return atomic_cmpxchg(v, old, new);
-}
-
-static __always_inline long
-atomic_long_cmpxchg_acquire(atomic_long_t *v, long old, long new)
-{
- return atomic_cmpxchg_acquire(v, old, new);
-}
-
-static __always_inline long
-atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
-{
- return atomic_cmpxchg_release(v, old, new);
-}
-
-static __always_inline long
-atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
-{
- return atomic_cmpxchg_relaxed(v, old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
-{
- return atomic_try_cmpxchg(v, (int *)old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
-{
- return atomic_try_cmpxchg_acquire(v, (int *)old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
-{
- return atomic_try_cmpxchg_release(v, (int *)old, new);
-}
-
-static __always_inline bool
-atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
-{
- return atomic_try_cmpxchg_relaxed(v, (int *)old, new);
-}
-
-static __always_inline bool
-atomic_long_sub_and_test(long i, atomic_long_t *v)
-{
- return atomic_sub_and_test(i, v);
-}
-
-static __always_inline bool
-atomic_long_dec_and_test(atomic_long_t *v)
-{
- return atomic_dec_and_test(v);
-}
-
-static __always_inline bool
-atomic_long_inc_and_test(atomic_long_t *v)
-{
- return atomic_inc_and_test(v);
-}
-
-static __always_inline bool
-atomic_long_add_negative(long i, atomic_long_t *v)
-{
- return atomic_add_negative(i, v);
-}
-
-static __always_inline long
-atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
-{
- return atomic_fetch_add_unless(v, a, u);
-}
-
-static __always_inline bool
-atomic_long_add_unless(atomic_long_t *v, long a, long u)
-{
- return atomic_add_unless(v, a, u);
-}
-
-static __always_inline bool
-atomic_long_inc_not_zero(atomic_long_t *v)
-{
- return atomic_inc_not_zero(v);
-}
-
-static __always_inline bool
-atomic_long_inc_unless_negative(atomic_long_t *v)
-{
- return atomic_inc_unless_negative(v);
-}
-
-static __always_inline bool
-atomic_long_dec_unless_positive(atomic_long_t *v)
-{
- return atomic_dec_unless_positive(v);
-}
-
-static __always_inline long
-atomic_long_dec_if_positive(atomic_long_t *v)
-{
- return atomic_dec_if_positive(v);
-}
-
-#endif /* CONFIG_64BIT */
-#endif /* _ASM_GENERIC_ATOMIC_LONG_H */
-// a624200981f552b2c6be4f32fe44da8289f30d87
* See Documentation/atomic_bitops.txt for details.
*/
-static __always_inline void set_bit(unsigned int nr, volatile unsigned long *p)
+static __always_inline void
+arch_set_bit(unsigned int nr, volatile unsigned long *p)
{
p += BIT_WORD(nr);
- atomic_long_or(BIT_MASK(nr), (atomic_long_t *)p);
+ arch_atomic_long_or(BIT_MASK(nr), (atomic_long_t *)p);
}
-static __always_inline void clear_bit(unsigned int nr, volatile unsigned long *p)
+static __always_inline void
+arch_clear_bit(unsigned int nr, volatile unsigned long *p)
{
p += BIT_WORD(nr);
- atomic_long_andnot(BIT_MASK(nr), (atomic_long_t *)p);
+ arch_atomic_long_andnot(BIT_MASK(nr), (atomic_long_t *)p);
}
-static __always_inline void change_bit(unsigned int nr, volatile unsigned long *p)
+static __always_inline void
+arch_change_bit(unsigned int nr, volatile unsigned long *p)
{
p += BIT_WORD(nr);
- atomic_long_xor(BIT_MASK(nr), (atomic_long_t *)p);
+ arch_atomic_long_xor(BIT_MASK(nr), (atomic_long_t *)p);
}
-static inline int test_and_set_bit(unsigned int nr, volatile unsigned long *p)
+static __always_inline int
+arch_test_and_set_bit(unsigned int nr, volatile unsigned long *p)
{
long old;
unsigned long mask = BIT_MASK(nr);
if (READ_ONCE(*p) & mask)
return 1;
- old = atomic_long_fetch_or(mask, (atomic_long_t *)p);
+ old = arch_atomic_long_fetch_or(mask, (atomic_long_t *)p);
return !!(old & mask);
}
-static inline int test_and_clear_bit(unsigned int nr, volatile unsigned long *p)
+static __always_inline int
+arch_test_and_clear_bit(unsigned int nr, volatile unsigned long *p)
{
long old;
unsigned long mask = BIT_MASK(nr);
if (!(READ_ONCE(*p) & mask))
return 0;
- old = atomic_long_fetch_andnot(mask, (atomic_long_t *)p);
+ old = arch_atomic_long_fetch_andnot(mask, (atomic_long_t *)p);
return !!(old & mask);
}
-static inline int test_and_change_bit(unsigned int nr, volatile unsigned long *p)
+static __always_inline int
+arch_test_and_change_bit(unsigned int nr, volatile unsigned long *p)
{
long old;
unsigned long mask = BIT_MASK(nr);
p += BIT_WORD(nr);
- old = atomic_long_fetch_xor(mask, (atomic_long_t *)p);
+ old = arch_atomic_long_fetch_xor(mask, (atomic_long_t *)p);
return !!(old & mask);
}
+#include <asm-generic/bitops/instrumented-atomic.h>
+
#endif /* _ASM_GENERIC_BITOPS_ATOMIC_H */
#include <asm/barrier.h>
/**
- * test_and_set_bit_lock - Set a bit and return its old value, for lock
+ * arch_test_and_set_bit_lock - Set a bit and return its old value, for lock
* @nr: Bit to set
* @addr: Address to count from
*
* the returned value is 0.
* It can be used to implement bit locks.
*/
-static inline int test_and_set_bit_lock(unsigned int nr,
- volatile unsigned long *p)
+static __always_inline int
+arch_test_and_set_bit_lock(unsigned int nr, volatile unsigned long *p)
{
long old;
unsigned long mask = BIT_MASK(nr);
if (READ_ONCE(*p) & mask)
return 1;
- old = atomic_long_fetch_or_acquire(mask, (atomic_long_t *)p);
+ old = arch_atomic_long_fetch_or_acquire(mask, (atomic_long_t *)p);
return !!(old & mask);
}
/**
- * clear_bit_unlock - Clear a bit in memory, for unlock
+ * arch_clear_bit_unlock - Clear a bit in memory, for unlock
* @nr: the bit to set
* @addr: the address to start counting from
*
* This operation is atomic and provides release barrier semantics.
*/
-static inline void clear_bit_unlock(unsigned int nr, volatile unsigned long *p)
+static __always_inline void
+arch_clear_bit_unlock(unsigned int nr, volatile unsigned long *p)
{
p += BIT_WORD(nr);
- atomic_long_fetch_andnot_release(BIT_MASK(nr), (atomic_long_t *)p);
+ arch_atomic_long_fetch_andnot_release(BIT_MASK(nr), (atomic_long_t *)p);
}
/**
- * __clear_bit_unlock - Clear a bit in memory, for unlock
+ * arch___clear_bit_unlock - Clear a bit in memory, for unlock
* @nr: the bit to set
* @addr: the address to start counting from
*
*
* See for example x86's implementation.
*/
-static inline void __clear_bit_unlock(unsigned int nr,
- volatile unsigned long *p)
+static inline void
+arch___clear_bit_unlock(unsigned int nr, volatile unsigned long *p)
{
unsigned long old;
p += BIT_WORD(nr);
old = READ_ONCE(*p);
old &= ~BIT_MASK(nr);
- atomic_long_set_release((atomic_long_t *)p, old);
+ arch_atomic_long_set_release((atomic_long_t *)p, old);
}
/**
- * clear_bit_unlock_is_negative_byte - Clear a bit in memory and test if bottom
- * byte is negative, for unlock.
+ * arch_clear_bit_unlock_is_negative_byte - Clear a bit in memory and test if bottom
+ * byte is negative, for unlock.
* @nr: the bit to clear
* @addr: the address to start counting from
*
* This is a bit of a one-trick-pony for the filemap code, which clears
* PG_locked and tests PG_waiters,
*/
-#ifndef clear_bit_unlock_is_negative_byte
-static inline bool clear_bit_unlock_is_negative_byte(unsigned int nr,
- volatile unsigned long *p)
+#ifndef arch_clear_bit_unlock_is_negative_byte
+static inline bool arch_clear_bit_unlock_is_negative_byte(unsigned int nr,
+ volatile unsigned long *p)
{
long old;
unsigned long mask = BIT_MASK(nr);
p += BIT_WORD(nr);
- old = atomic_long_fetch_andnot_release(mask, (atomic_long_t *)p);
+ old = arch_atomic_long_fetch_andnot_release(mask, (atomic_long_t *)p);
return !!(old & BIT(7));
}
-#define clear_bit_unlock_is_negative_byte clear_bit_unlock_is_negative_byte
+#define arch_clear_bit_unlock_is_negative_byte arch_clear_bit_unlock_is_negative_byte
#endif
+#include <asm-generic/bitops/instrumented-lock.h>
+
#endif /* _ASM_GENERIC_BITOPS_LOCK_H_ */
#include <asm/types.h>
/**
- * __set_bit - Set a bit in memory
+ * arch___set_bit - Set a bit in memory
* @nr: the bit to set
* @addr: the address to start counting from
*
* If it's called on the same region of memory simultaneously, the effect
* may be that only one operation succeeds.
*/
-static inline void __set_bit(int nr, volatile unsigned long *addr)
+static __always_inline void
+arch___set_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p |= mask;
}
+#define __set_bit arch___set_bit
-static inline void __clear_bit(int nr, volatile unsigned long *addr)
+static __always_inline void
+arch___clear_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p &= ~mask;
}
+#define __clear_bit arch___clear_bit
/**
- * __change_bit - Toggle a bit in memory
+ * arch___change_bit - Toggle a bit in memory
* @nr: the bit to change
* @addr: the address to start counting from
*
* If it's called on the same region of memory simultaneously, the effect
* may be that only one operation succeeds.
*/
-static inline void __change_bit(int nr, volatile unsigned long *addr)
+static __always_inline
+void arch___change_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p ^= mask;
}
+#define __change_bit arch___change_bit
/**
- * __test_and_set_bit - Set a bit and return its old value
+ * arch___test_and_set_bit - Set a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
*
* If two examples of this operation race, one can appear to succeed
* but actually fail. You must protect multiple accesses with a lock.
*/
-static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
+static __always_inline int
+arch___test_and_set_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p = old | mask;
return (old & mask) != 0;
}
+#define __test_and_set_bit arch___test_and_set_bit
/**
- * __test_and_clear_bit - Clear a bit and return its old value
+ * arch___test_and_clear_bit - Clear a bit and return its old value
* @nr: Bit to clear
* @addr: Address to count from
*
* If two examples of this operation race, one can appear to succeed
* but actually fail. You must protect multiple accesses with a lock.
*/
-static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
+static __always_inline int
+arch___test_and_clear_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p = old & ~mask;
return (old & mask) != 0;
}
+#define __test_and_clear_bit arch___test_and_clear_bit
/* WARNING: non atomic and it can be reordered! */
-static inline int __test_and_change_bit(int nr,
- volatile unsigned long *addr)
+static __always_inline int
+arch___test_and_change_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p = old ^ mask;
return (old & mask) != 0;
}
+#define __test_and_change_bit arch___test_and_change_bit
/**
- * test_bit - Determine whether a bit is set
+ * arch_test_bit - Determine whether a bit is set
* @nr: bit number to test
* @addr: Address to start counting from
*/
-static inline int test_bit(int nr, const volatile unsigned long *addr)
+static __always_inline int
+arch_test_bit(int nr, const volatile unsigned long *addr)
{
return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
}
+#define test_bit arch_test_bit
#endif /* _ASM_GENERIC_BITOPS_NON_ATOMIC_H_ */
__ret; \
})
-#include <linux/atomic-arch-fallback.h>
-#include <asm-generic/atomic-instrumented.h>
-
-#include <asm-generic/atomic-long.h>
+#include <linux/atomic/atomic-arch-fallback.h>
+#include <linux/atomic/atomic-long.h>
+#include <linux/atomic/atomic-instrumented.h>
#endif /* _LINUX_ATOMIC_H */
* arch_ variants (i.e. arch_atomic_read()/arch_atomic_cmpxchg()) to avoid
* double instrumentation.
*/
-#ifndef _ASM_GENERIC_ATOMIC_INSTRUMENTED_H
-#define _ASM_GENERIC_ATOMIC_INSTRUMENTED_H
+#ifndef _LINUX_ATOMIC_INSTRUMENTED_H
+#define _LINUX_ATOMIC_INSTRUMENTED_H
#include <linux/build_bug.h>
#include <linux/compiler.h>
return arch_atomic64_dec_if_positive(v);
}
+static __always_inline long
+atomic_long_read(const atomic_long_t *v)
+{
+ instrument_atomic_read(v, sizeof(*v));
+ return arch_atomic_long_read(v);
+}
+
+static __always_inline long
+atomic_long_read_acquire(const atomic_long_t *v)
+{
+ instrument_atomic_read(v, sizeof(*v));
+ return arch_atomic_long_read_acquire(v);
+}
+
+static __always_inline void
+atomic_long_set(atomic_long_t *v, long i)
+{
+ instrument_atomic_write(v, sizeof(*v));
+ arch_atomic_long_set(v, i);
+}
+
+static __always_inline void
+atomic_long_set_release(atomic_long_t *v, long i)
+{
+ instrument_atomic_write(v, sizeof(*v));
+ arch_atomic_long_set_release(v, i);
+}
+
+static __always_inline void
+atomic_long_add(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_add(i, v);
+}
+
+static __always_inline long
+atomic_long_add_return(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_add_return(i, v);
+}
+
+static __always_inline long
+atomic_long_add_return_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_add_return_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_add_return_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_add_return_release(i, v);
+}
+
+static __always_inline long
+atomic_long_add_return_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_add_return_relaxed(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_add(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_add(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_add_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_add_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_add_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_add_release(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_add_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_add_relaxed(i, v);
+}
+
+static __always_inline void
+atomic_long_sub(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_sub(i, v);
+}
+
+static __always_inline long
+atomic_long_sub_return(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_sub_return(i, v);
+}
+
+static __always_inline long
+atomic_long_sub_return_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_sub_return_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_sub_return_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_sub_return_release(i, v);
+}
+
+static __always_inline long
+atomic_long_sub_return_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_sub_return_relaxed(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_sub(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_sub(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_sub_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_sub_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_sub_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_sub_release(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_sub_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_sub_relaxed(i, v);
+}
+
+static __always_inline void
+atomic_long_inc(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_inc(v);
+}
+
+static __always_inline long
+atomic_long_inc_return(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_inc_return(v);
+}
+
+static __always_inline long
+atomic_long_inc_return_acquire(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_inc_return_acquire(v);
+}
+
+static __always_inline long
+atomic_long_inc_return_release(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_inc_return_release(v);
+}
+
+static __always_inline long
+atomic_long_inc_return_relaxed(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_inc_return_relaxed(v);
+}
+
+static __always_inline long
+atomic_long_fetch_inc(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_inc(v);
+}
+
+static __always_inline long
+atomic_long_fetch_inc_acquire(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_inc_acquire(v);
+}
+
+static __always_inline long
+atomic_long_fetch_inc_release(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_inc_release(v);
+}
+
+static __always_inline long
+atomic_long_fetch_inc_relaxed(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_inc_relaxed(v);
+}
+
+static __always_inline void
+atomic_long_dec(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_dec(v);
+}
+
+static __always_inline long
+atomic_long_dec_return(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_dec_return(v);
+}
+
+static __always_inline long
+atomic_long_dec_return_acquire(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_dec_return_acquire(v);
+}
+
+static __always_inline long
+atomic_long_dec_return_release(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_dec_return_release(v);
+}
+
+static __always_inline long
+atomic_long_dec_return_relaxed(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_dec_return_relaxed(v);
+}
+
+static __always_inline long
+atomic_long_fetch_dec(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_dec(v);
+}
+
+static __always_inline long
+atomic_long_fetch_dec_acquire(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_dec_acquire(v);
+}
+
+static __always_inline long
+atomic_long_fetch_dec_release(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_dec_release(v);
+}
+
+static __always_inline long
+atomic_long_fetch_dec_relaxed(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_dec_relaxed(v);
+}
+
+static __always_inline void
+atomic_long_and(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_and(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_and(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_and(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_and_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_and_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_and_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_and_release(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_and_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_and_relaxed(i, v);
+}
+
+static __always_inline void
+atomic_long_andnot(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_andnot(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_andnot(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_andnot(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_andnot_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_andnot_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_andnot_release(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_andnot_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_andnot_relaxed(i, v);
+}
+
+static __always_inline void
+atomic_long_or(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_or(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_or(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_or(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_or_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_or_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_or_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_or_release(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_or_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_or_relaxed(i, v);
+}
+
+static __always_inline void
+atomic_long_xor(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ arch_atomic_long_xor(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_xor(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_xor(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_xor_acquire(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_xor_acquire(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_xor_release(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_xor_release(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_xor_relaxed(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_xor_relaxed(i, v);
+}
+
+static __always_inline long
+atomic_long_xchg(atomic_long_t *v, long i)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_xchg(v, i);
+}
+
+static __always_inline long
+atomic_long_xchg_acquire(atomic_long_t *v, long i)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_xchg_acquire(v, i);
+}
+
+static __always_inline long
+atomic_long_xchg_release(atomic_long_t *v, long i)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_xchg_release(v, i);
+}
+
+static __always_inline long
+atomic_long_xchg_relaxed(atomic_long_t *v, long i)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_xchg_relaxed(v, i);
+}
+
+static __always_inline long
+atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_cmpxchg(v, old, new);
+}
+
+static __always_inline long
+atomic_long_cmpxchg_acquire(atomic_long_t *v, long old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_cmpxchg_acquire(v, old, new);
+}
+
+static __always_inline long
+atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_cmpxchg_release(v, old, new);
+}
+
+static __always_inline long
+atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_cmpxchg_relaxed(v, old, new);
+}
+
+static __always_inline bool
+atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ instrument_atomic_read_write(old, sizeof(*old));
+ return arch_atomic_long_try_cmpxchg(v, old, new);
+}
+
+static __always_inline bool
+atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ instrument_atomic_read_write(old, sizeof(*old));
+ return arch_atomic_long_try_cmpxchg_acquire(v, old, new);
+}
+
+static __always_inline bool
+atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ instrument_atomic_read_write(old, sizeof(*old));
+ return arch_atomic_long_try_cmpxchg_release(v, old, new);
+}
+
+static __always_inline bool
+atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ instrument_atomic_read_write(old, sizeof(*old));
+ return arch_atomic_long_try_cmpxchg_relaxed(v, old, new);
+}
+
+static __always_inline bool
+atomic_long_sub_and_test(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_sub_and_test(i, v);
+}
+
+static __always_inline bool
+atomic_long_dec_and_test(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_dec_and_test(v);
+}
+
+static __always_inline bool
+atomic_long_inc_and_test(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_inc_and_test(v);
+}
+
+static __always_inline bool
+atomic_long_add_negative(long i, atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_add_negative(i, v);
+}
+
+static __always_inline long
+atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_fetch_add_unless(v, a, u);
+}
+
+static __always_inline bool
+atomic_long_add_unless(atomic_long_t *v, long a, long u)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_add_unless(v, a, u);
+}
+
+static __always_inline bool
+atomic_long_inc_not_zero(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_inc_not_zero(v);
+}
+
+static __always_inline bool
+atomic_long_inc_unless_negative(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_inc_unless_negative(v);
+}
+
+static __always_inline bool
+atomic_long_dec_unless_positive(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_dec_unless_positive(v);
+}
+
+static __always_inline long
+atomic_long_dec_if_positive(atomic_long_t *v)
+{
+ instrument_atomic_read_write(v, sizeof(*v));
+ return arch_atomic_long_dec_if_positive(v);
+}
+
#define xchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
arch_cmpxchg_double_local(__ai_ptr, __VA_ARGS__); \
})
-#endif /* _ASM_GENERIC_ATOMIC_INSTRUMENTED_H */
-// 1d7c3a25aca5c7fb031c307be4c3d24c7b48fcd5
+#endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
+// 2a9553f0a9d5619f19151092df5cabbbf16ce835
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+
+// Generated by scripts/atomic/gen-atomic-long.sh
+// DO NOT MODIFY THIS FILE DIRECTLY
+
+#ifndef _LINUX_ATOMIC_LONG_H
+#define _LINUX_ATOMIC_LONG_H
+
+#include <linux/compiler.h>
+#include <asm/types.h>
+
+#ifdef CONFIG_64BIT
+typedef atomic64_t atomic_long_t;
+#define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
+#define atomic_long_cond_read_acquire atomic64_cond_read_acquire
+#define atomic_long_cond_read_relaxed atomic64_cond_read_relaxed
+#else
+typedef atomic_t atomic_long_t;
+#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
+#define atomic_long_cond_read_acquire atomic_cond_read_acquire
+#define atomic_long_cond_read_relaxed atomic_cond_read_relaxed
+#endif
+
+#ifdef CONFIG_64BIT
+
+static __always_inline long
+arch_atomic_long_read(const atomic_long_t *v)
+{
+ return arch_atomic64_read(v);
+}
+
+static __always_inline long
+arch_atomic_long_read_acquire(const atomic_long_t *v)
+{
+ return arch_atomic64_read_acquire(v);
+}
+
+static __always_inline void
+arch_atomic_long_set(atomic_long_t *v, long i)
+{
+ arch_atomic64_set(v, i);
+}
+
+static __always_inline void
+arch_atomic_long_set_release(atomic_long_t *v, long i)
+{
+ arch_atomic64_set_release(v, i);
+}
+
+static __always_inline void
+arch_atomic_long_add(long i, atomic_long_t *v)
+{
+ arch_atomic64_add(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return(long i, atomic_long_t *v)
+{
+ return arch_atomic64_add_return(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_add_return_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_add_return_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_add_return_relaxed(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_add(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_add_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_add_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_add_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_sub(long i, atomic_long_t *v)
+{
+ arch_atomic64_sub(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return(long i, atomic_long_t *v)
+{
+ return arch_atomic64_sub_return(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_sub_return_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_sub_return_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_sub_return_relaxed(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_sub(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_sub_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_sub_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_sub_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_inc(atomic_long_t *v)
+{
+ arch_atomic64_inc(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return(atomic_long_t *v)
+{
+ return arch_atomic64_inc_return(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return_acquire(atomic_long_t *v)
+{
+ return arch_atomic64_inc_return_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return_release(atomic_long_t *v)
+{
+ return arch_atomic64_inc_return_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return_relaxed(atomic_long_t *v)
+{
+ return arch_atomic64_inc_return_relaxed(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_inc(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc_acquire(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_inc_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc_release(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_inc_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc_relaxed(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_inc_relaxed(v);
+}
+
+static __always_inline void
+arch_atomic_long_dec(atomic_long_t *v)
+{
+ arch_atomic64_dec(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return(atomic_long_t *v)
+{
+ return arch_atomic64_dec_return(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return_acquire(atomic_long_t *v)
+{
+ return arch_atomic64_dec_return_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return_release(atomic_long_t *v)
+{
+ return arch_atomic64_dec_return_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return_relaxed(atomic_long_t *v)
+{
+ return arch_atomic64_dec_return_relaxed(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_dec(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec_acquire(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_dec_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec_release(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_dec_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec_relaxed(atomic_long_t *v)
+{
+ return arch_atomic64_fetch_dec_relaxed(v);
+}
+
+static __always_inline void
+arch_atomic_long_and(long i, atomic_long_t *v)
+{
+ arch_atomic64_and(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_and(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_and_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_and_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_and_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_andnot(long i, atomic_long_t *v)
+{
+ arch_atomic64_andnot(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_andnot(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_andnot_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_andnot_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_andnot_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_or(long i, atomic_long_t *v)
+{
+ arch_atomic64_or(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_or(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_or_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_or_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_or_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_xor(long i, atomic_long_t *v)
+{
+ arch_atomic64_xor(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_xor(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_xor_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor_release(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_xor_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic64_fetch_xor_relaxed(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_xchg(atomic_long_t *v, long i)
+{
+ return arch_atomic64_xchg(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_xchg_acquire(atomic_long_t *v, long i)
+{
+ return arch_atomic64_xchg_acquire(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_xchg_release(atomic_long_t *v, long i)
+{
+ return arch_atomic64_xchg_release(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_xchg_relaxed(atomic_long_t *v, long i)
+{
+ return arch_atomic64_xchg_relaxed(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic64_cmpxchg(v, old, new);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg_acquire(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic64_cmpxchg_acquire(v, old, new);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic64_cmpxchg_release(v, old, new);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic64_cmpxchg_relaxed(v, old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic64_try_cmpxchg(v, (s64 *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic64_try_cmpxchg_acquire(v, (s64 *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic64_try_cmpxchg_release(v, (s64 *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic64_try_cmpxchg_relaxed(v, (s64 *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_sub_and_test(long i, atomic_long_t *v)
+{
+ return arch_atomic64_sub_and_test(i, v);
+}
+
+static __always_inline bool
+arch_atomic_long_dec_and_test(atomic_long_t *v)
+{
+ return arch_atomic64_dec_and_test(v);
+}
+
+static __always_inline bool
+arch_atomic_long_inc_and_test(atomic_long_t *v)
+{
+ return arch_atomic64_inc_and_test(v);
+}
+
+static __always_inline bool
+arch_atomic_long_add_negative(long i, atomic_long_t *v)
+{
+ return arch_atomic64_add_negative(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
+{
+ return arch_atomic64_fetch_add_unless(v, a, u);
+}
+
+static __always_inline bool
+arch_atomic_long_add_unless(atomic_long_t *v, long a, long u)
+{
+ return arch_atomic64_add_unless(v, a, u);
+}
+
+static __always_inline bool
+arch_atomic_long_inc_not_zero(atomic_long_t *v)
+{
+ return arch_atomic64_inc_not_zero(v);
+}
+
+static __always_inline bool
+arch_atomic_long_inc_unless_negative(atomic_long_t *v)
+{
+ return arch_atomic64_inc_unless_negative(v);
+}
+
+static __always_inline bool
+arch_atomic_long_dec_unless_positive(atomic_long_t *v)
+{
+ return arch_atomic64_dec_unless_positive(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_if_positive(atomic_long_t *v)
+{
+ return arch_atomic64_dec_if_positive(v);
+}
+
+#else /* CONFIG_64BIT */
+
+static __always_inline long
+arch_atomic_long_read(const atomic_long_t *v)
+{
+ return arch_atomic_read(v);
+}
+
+static __always_inline long
+arch_atomic_long_read_acquire(const atomic_long_t *v)
+{
+ return arch_atomic_read_acquire(v);
+}
+
+static __always_inline void
+arch_atomic_long_set(atomic_long_t *v, long i)
+{
+ arch_atomic_set(v, i);
+}
+
+static __always_inline void
+arch_atomic_long_set_release(atomic_long_t *v, long i)
+{
+ arch_atomic_set_release(v, i);
+}
+
+static __always_inline void
+arch_atomic_long_add(long i, atomic_long_t *v)
+{
+ arch_atomic_add(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return(long i, atomic_long_t *v)
+{
+ return arch_atomic_add_return(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_add_return_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_add_return_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_add_return_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_add_return_relaxed(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_add(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_add_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_add_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_add_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_sub(long i, atomic_long_t *v)
+{
+ arch_atomic_sub(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return(long i, atomic_long_t *v)
+{
+ return arch_atomic_sub_return(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_sub_return_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_sub_return_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_sub_return_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_sub_return_relaxed(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_sub(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_sub_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_sub_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_sub_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_sub_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_inc(atomic_long_t *v)
+{
+ arch_atomic_inc(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return(atomic_long_t *v)
+{
+ return arch_atomic_inc_return(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return_acquire(atomic_long_t *v)
+{
+ return arch_atomic_inc_return_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return_release(atomic_long_t *v)
+{
+ return arch_atomic_inc_return_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_inc_return_relaxed(atomic_long_t *v)
+{
+ return arch_atomic_inc_return_relaxed(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc(atomic_long_t *v)
+{
+ return arch_atomic_fetch_inc(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc_acquire(atomic_long_t *v)
+{
+ return arch_atomic_fetch_inc_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc_release(atomic_long_t *v)
+{
+ return arch_atomic_fetch_inc_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_inc_relaxed(atomic_long_t *v)
+{
+ return arch_atomic_fetch_inc_relaxed(v);
+}
+
+static __always_inline void
+arch_atomic_long_dec(atomic_long_t *v)
+{
+ arch_atomic_dec(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return(atomic_long_t *v)
+{
+ return arch_atomic_dec_return(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return_acquire(atomic_long_t *v)
+{
+ return arch_atomic_dec_return_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return_release(atomic_long_t *v)
+{
+ return arch_atomic_dec_return_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_return_relaxed(atomic_long_t *v)
+{
+ return arch_atomic_dec_return_relaxed(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec(atomic_long_t *v)
+{
+ return arch_atomic_fetch_dec(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec_acquire(atomic_long_t *v)
+{
+ return arch_atomic_fetch_dec_acquire(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec_release(atomic_long_t *v)
+{
+ return arch_atomic_fetch_dec_release(v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_dec_relaxed(atomic_long_t *v)
+{
+ return arch_atomic_fetch_dec_relaxed(v);
+}
+
+static __always_inline void
+arch_atomic_long_and(long i, atomic_long_t *v)
+{
+ arch_atomic_and(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_and(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_and_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_and_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_and_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_and_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_andnot(long i, atomic_long_t *v)
+{
+ arch_atomic_andnot(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_andnot(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_andnot_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_andnot_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_andnot_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_andnot_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_or(long i, atomic_long_t *v)
+{
+ arch_atomic_or(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_or(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_or_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_or_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_or_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_or_relaxed(i, v);
+}
+
+static __always_inline void
+arch_atomic_long_xor(long i, atomic_long_t *v)
+{
+ arch_atomic_xor(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_xor(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor_acquire(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_xor_acquire(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor_release(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_xor_release(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_xor_relaxed(long i, atomic_long_t *v)
+{
+ return arch_atomic_fetch_xor_relaxed(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_xchg(atomic_long_t *v, long i)
+{
+ return arch_atomic_xchg(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_xchg_acquire(atomic_long_t *v, long i)
+{
+ return arch_atomic_xchg_acquire(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_xchg_release(atomic_long_t *v, long i)
+{
+ return arch_atomic_xchg_release(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_xchg_relaxed(atomic_long_t *v, long i)
+{
+ return arch_atomic_xchg_relaxed(v, i);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic_cmpxchg(v, old, new);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg_acquire(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic_cmpxchg_acquire(v, old, new);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic_cmpxchg_release(v, old, new);
+}
+
+static __always_inline long
+arch_atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
+{
+ return arch_atomic_cmpxchg_relaxed(v, old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic_try_cmpxchg(v, (int *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic_try_cmpxchg_acquire(v, (int *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic_try_cmpxchg_release(v, (int *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
+{
+ return arch_atomic_try_cmpxchg_relaxed(v, (int *)old, new);
+}
+
+static __always_inline bool
+arch_atomic_long_sub_and_test(long i, atomic_long_t *v)
+{
+ return arch_atomic_sub_and_test(i, v);
+}
+
+static __always_inline bool
+arch_atomic_long_dec_and_test(atomic_long_t *v)
+{
+ return arch_atomic_dec_and_test(v);
+}
+
+static __always_inline bool
+arch_atomic_long_inc_and_test(atomic_long_t *v)
+{
+ return arch_atomic_inc_and_test(v);
+}
+
+static __always_inline bool
+arch_atomic_long_add_negative(long i, atomic_long_t *v)
+{
+ return arch_atomic_add_negative(i, v);
+}
+
+static __always_inline long
+arch_atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
+{
+ return arch_atomic_fetch_add_unless(v, a, u);
+}
+
+static __always_inline bool
+arch_atomic_long_add_unless(atomic_long_t *v, long a, long u)
+{
+ return arch_atomic_add_unless(v, a, u);
+}
+
+static __always_inline bool
+arch_atomic_long_inc_not_zero(atomic_long_t *v)
+{
+ return arch_atomic_inc_not_zero(v);
+}
+
+static __always_inline bool
+arch_atomic_long_inc_unless_negative(atomic_long_t *v)
+{
+ return arch_atomic_inc_unless_negative(v);
+}
+
+static __always_inline bool
+arch_atomic_long_dec_unless_positive(atomic_long_t *v)
+{
+ return arch_atomic_dec_unless_positive(v);
+}
+
+static __always_inline long
+arch_atomic_long_dec_if_positive(atomic_long_t *v)
+{
+ return arch_atomic_dec_if_positive(v);
+}
+
+#endif /* CONFIG_64BIT */
+#endif /* _LINUX_ATOMIC_LONG_H */
+// e8f0e08ff072b74d180eabe2ad001282b38c2c88
#ifdef CONFIG_DEBUG_MUTEXES
# include "mutex-debug.h"
+# define MUTEX_WARN_ON(cond) DEBUG_LOCKS_WARN_ON(cond)
#else
# include "mutex.h"
+# define MUTEX_WARN_ON(cond)
#endif
void
return owner & MUTEX_FLAGS;
}
-/*
- * Trylock variant that returns the owning task on failure.
- */
-static inline struct task_struct *__mutex_trylock_or_owner(struct mutex *lock)
+static inline struct task_struct *__mutex_trylock_common(struct mutex *lock, bool handoff)
{
unsigned long owner, curr = (unsigned long)current;
owner = atomic_long_read(&lock->owner);
for (;;) { /* must loop, can race against a flag */
- unsigned long old, flags = __owner_flags(owner);
+ unsigned long flags = __owner_flags(owner);
unsigned long task = owner & ~MUTEX_FLAGS;
if (task) {
- if (likely(task != curr))
- break;
-
- if (likely(!(flags & MUTEX_FLAG_PICKUP)))
+ if (flags & MUTEX_FLAG_PICKUP) {
+ if (task != curr)
+ break;
+ flags &= ~MUTEX_FLAG_PICKUP;
+ } else if (handoff) {
+ if (flags & MUTEX_FLAG_HANDOFF)
+ break;
+ flags |= MUTEX_FLAG_HANDOFF;
+ } else {
break;
-
- flags &= ~MUTEX_FLAG_PICKUP;
+ }
} else {
-#ifdef CONFIG_DEBUG_MUTEXES
- DEBUG_LOCKS_WARN_ON(flags & MUTEX_FLAG_PICKUP);
-#endif
+ MUTEX_WARN_ON(flags & (MUTEX_FLAG_HANDOFF | MUTEX_FLAG_PICKUP));
+ task = curr;
}
- /*
- * We set the HANDOFF bit, we must make sure it doesn't live
- * past the point where we acquire it. This would be possible
- * if we (accidentally) set the bit on an unlocked mutex.
- */
- flags &= ~MUTEX_FLAG_HANDOFF;
-
- old = atomic_long_cmpxchg_acquire(&lock->owner, owner, curr | flags);
- if (old == owner)
- return NULL;
-
- owner = old;
+ if (atomic_long_try_cmpxchg_acquire(&lock->owner, &owner, task | flags)) {
+ if (task == curr)
+ return NULL;
+ break;
+ }
}
return __owner_task(owner);
}
+/*
+ * Trylock or set HANDOFF
+ */
+static inline bool __mutex_trylock_or_handoff(struct mutex *lock, bool handoff)
+{
+ return !__mutex_trylock_common(lock, handoff);
+}
+
/*
* Actual trylock that will work on any unlocked state.
*/
static inline bool __mutex_trylock(struct mutex *lock)
{
- return !__mutex_trylock_or_owner(lock);
+ return !__mutex_trylock_common(lock, false);
}
#ifndef CONFIG_DEBUG_LOCK_ALLOC
{
unsigned long curr = (unsigned long)current;
- if (atomic_long_cmpxchg_release(&lock->owner, curr, 0UL) == curr)
- return true;
-
- return false;
+ return atomic_long_try_cmpxchg_release(&lock->owner, &curr, 0UL);
}
#endif
unsigned long owner = atomic_long_read(&lock->owner);
for (;;) {
- unsigned long old, new;
+ unsigned long new;
-#ifdef CONFIG_DEBUG_MUTEXES
- DEBUG_LOCKS_WARN_ON(__owner_task(owner) != current);
- DEBUG_LOCKS_WARN_ON(owner & MUTEX_FLAG_PICKUP);
-#endif
+ MUTEX_WARN_ON(__owner_task(owner) != current);
+ MUTEX_WARN_ON(owner & MUTEX_FLAG_PICKUP);
new = (owner & MUTEX_FLAG_WAITERS);
new |= (unsigned long)task;
if (task)
new |= MUTEX_FLAG_PICKUP;
- old = atomic_long_cmpxchg_release(&lock->owner, owner, new);
- if (old == owner)
+ if (atomic_long_try_cmpxchg_release(&lock->owner, &owner, new))
break;
-
- owner = old;
}
}
#ifdef CONFIG_MUTEX_SPIN_ON_OWNER
+/*
+ * Trylock variant that returns the owning task on failure.
+ */
+static inline struct task_struct *__mutex_trylock_or_owner(struct mutex *lock)
+{
+ return __mutex_trylock_common(lock, false);
+}
+
static inline
bool ww_mutex_spin_on_owner(struct mutex *lock, struct ww_acquire_ctx *ww_ctx,
struct mutex_waiter *waiter)
* into 'unlocked' state:
*/
if (lock->ctx) {
-#ifdef CONFIG_DEBUG_MUTEXES
- DEBUG_LOCKS_WARN_ON(!lock->ctx->acquired);
-#endif
+ MUTEX_WARN_ON(!lock->ctx->acquired);
if (lock->ctx->acquired > 0)
lock->ctx->acquired--;
lock->ctx = NULL;
struct ww_acquire_ctx *ww_ctx, const bool use_ww_ctx)
{
struct mutex_waiter waiter;
- bool first = false;
struct ww_mutex *ww;
int ret;
might_sleep();
-#ifdef CONFIG_DEBUG_MUTEXES
- DEBUG_LOCKS_WARN_ON(lock->magic != lock);
-#endif
+ MUTEX_WARN_ON(lock->magic != lock);
ww = container_of(lock, struct ww_mutex, base);
if (ww_ctx) {
set_current_state(state);
for (;;) {
+ bool first;
+
/*
* Once we hold wait_lock, we're serialized against
* mutex_unlock() handing the lock off to us, do a trylock
spin_unlock(&lock->wait_lock);
schedule_preempt_disabled();
- /*
- * ww_mutex needs to always recheck its position since its waiter
- * list is not FIFO ordered.
- */
- if (ww_ctx || !first) {
- first = __mutex_waiter_is_first(lock, &waiter);
- if (first)
- __mutex_set_flag(lock, MUTEX_FLAG_HANDOFF);
- }
+ first = __mutex_waiter_is_first(lock, &waiter);
set_current_state(state);
/*
* state back to RUNNING and fall through the next schedule(),
* or we must see its unlock and acquire.
*/
- if (__mutex_trylock(lock) ||
+ if (__mutex_trylock_or_handoff(lock, first) ||
(first && mutex_optimistic_spin(lock, ww_ctx, &waiter)))
break;
*/
owner = atomic_long_read(&lock->owner);
for (;;) {
- unsigned long old;
-
-#ifdef CONFIG_DEBUG_MUTEXES
- DEBUG_LOCKS_WARN_ON(__owner_task(owner) != current);
- DEBUG_LOCKS_WARN_ON(owner & MUTEX_FLAG_PICKUP);
-#endif
+ MUTEX_WARN_ON(__owner_task(owner) != current);
+ MUTEX_WARN_ON(owner & MUTEX_FLAG_PICKUP);
if (owner & MUTEX_FLAG_HANDOFF)
break;
- old = atomic_long_cmpxchg_release(&lock->owner, owner,
- __owner_flags(owner));
- if (old == owner) {
+ if (atomic_long_try_cmpxchg_release(&lock->owner, &owner, __owner_flags(owner))) {
if (owner & MUTEX_FLAG_WAITERS)
break;
return;
}
-
- owner = old;
}
spin_lock(&lock->wait_lock);
{
bool locked;
-#ifdef CONFIG_DEBUG_MUTEXES
- DEBUG_LOCKS_WARN_ON(lock->magic != lock);
-#endif
+ MUTEX_WARN_ON(lock->magic != lock);
locked = __mutex_trylock(lock);
if (locked)
* handle waking up a waiter on the semaphore
* - up_read/up_write has decremented the active part of count if we come here
*/
-static struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem, long count)
+static struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
{
unsigned long flags;
DEFINE_WAKE_Q(wake_q);
if (unlikely((tmp & (RWSEM_LOCK_MASK|RWSEM_FLAG_WAITERS)) ==
RWSEM_FLAG_WAITERS)) {
clear_nonspinnable(sem);
- rwsem_wake(sem, tmp);
+ rwsem_wake(sem);
}
}
rwsem_clear_owner(sem);
tmp = atomic_long_fetch_add_release(-RWSEM_WRITER_LOCKED, &sem->count);
if (unlikely(tmp & RWSEM_FLAG_WAITERS))
- rwsem_wake(sem, tmp);
+ rwsem_wake(sem);
}
/*
fi
cat <<EOF |
-asm-generic/atomic-instrumented.h
-asm-generic/atomic-long.h
-linux/atomic-arch-fallback.h
+linux/atomic/atomic-instrumented.h
+linux/atomic/atomic-long.h
+linux/atomic/atomic-arch-fallback.h
EOF
while read header; do
OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})"
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_${pfx}${name}${sfx}_acquire(${params})
+arch_${atomic}_${pfx}${name}${sfx}_acquire(${params})
{
- ${ret} ret = ${arch}${atomic}_${pfx}${name}${sfx}_relaxed(${args});
+ ${ret} ret = arch_${atomic}_${pfx}${name}${sfx}_relaxed(${args});
__atomic_acquire_fence();
return ret;
}
cat <<EOF
/**
- * ${arch}${atomic}_add_negative - add and test if negative
+ * arch_${atomic}_add_negative - add and test if negative
* @i: integer value to add
* @v: pointer of type ${atomic}_t
*
* result is greater than or equal to zero.
*/
static __always_inline bool
-${arch}${atomic}_add_negative(${int} i, ${atomic}_t *v)
+arch_${atomic}_add_negative(${int} i, ${atomic}_t *v)
{
- return ${arch}${atomic}_add_return(i, v) < 0;
+ return arch_${atomic}_add_return(i, v) < 0;
}
EOF
cat << EOF
/**
- * ${arch}${atomic}_add_unless - add unless the number is already a given value
+ * arch_${atomic}_add_unless - add unless the number is already a given value
* @v: pointer of type ${atomic}_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
* Returns true if the addition was done.
*/
static __always_inline bool
-${arch}${atomic}_add_unless(${atomic}_t *v, ${int} a, ${int} u)
+arch_${atomic}_add_unless(${atomic}_t *v, ${int} a, ${int} u)
{
- return ${arch}${atomic}_fetch_add_unless(v, a, u) != u;
+ return arch_${atomic}_fetch_add_unless(v, a, u) != u;
}
EOF
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_${pfx}andnot${sfx}${order}(${int} i, ${atomic}_t *v)
+arch_${atomic}_${pfx}andnot${sfx}${order}(${int} i, ${atomic}_t *v)
{
- ${retstmt}${arch}${atomic}_${pfx}and${sfx}${order}(~i, v);
+ ${retstmt}arch_${atomic}_${pfx}and${sfx}${order}(~i, v);
}
EOF
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_${pfx}dec${sfx}${order}(${atomic}_t *v)
+arch_${atomic}_${pfx}dec${sfx}${order}(${atomic}_t *v)
{
- ${retstmt}${arch}${atomic}_${pfx}sub${sfx}${order}(1, v);
+ ${retstmt}arch_${atomic}_${pfx}sub${sfx}${order}(1, v);
}
EOF
cat <<EOF
/**
- * ${arch}${atomic}_dec_and_test - decrement and test
+ * arch_${atomic}_dec_and_test - decrement and test
* @v: pointer of type ${atomic}_t
*
* Atomically decrements @v by 1 and
* cases.
*/
static __always_inline bool
-${arch}${atomic}_dec_and_test(${atomic}_t *v)
+arch_${atomic}_dec_and_test(${atomic}_t *v)
{
- return ${arch}${atomic}_dec_return(v) == 0;
+ return arch_${atomic}_dec_return(v) == 0;
}
EOF
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_dec_if_positive(${atomic}_t *v)
+arch_${atomic}_dec_if_positive(${atomic}_t *v)
{
- ${int} dec, c = ${arch}${atomic}_read(v);
+ ${int} dec, c = arch_${atomic}_read(v);
do {
dec = c - 1;
if (unlikely(dec < 0))
break;
- } while (!${arch}${atomic}_try_cmpxchg(v, &c, dec));
+ } while (!arch_${atomic}_try_cmpxchg(v, &c, dec));
return dec;
}
cat <<EOF
static __always_inline bool
-${arch}${atomic}_dec_unless_positive(${atomic}_t *v)
+arch_${atomic}_dec_unless_positive(${atomic}_t *v)
{
- ${int} c = ${arch}${atomic}_read(v);
+ ${int} c = arch_${atomic}_read(v);
do {
if (unlikely(c > 0))
return false;
- } while (!${arch}${atomic}_try_cmpxchg(v, &c, c - 1));
+ } while (!arch_${atomic}_try_cmpxchg(v, &c, c - 1));
return true;
}
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_${pfx}${name}${sfx}(${params})
+arch_${atomic}_${pfx}${name}${sfx}(${params})
{
${ret} ret;
__atomic_pre_full_fence();
- ret = ${arch}${atomic}_${pfx}${name}${sfx}_relaxed(${args});
+ ret = arch_${atomic}_${pfx}${name}${sfx}_relaxed(${args});
__atomic_post_full_fence();
return ret;
}
cat << EOF
/**
- * ${arch}${atomic}_fetch_add_unless - add unless the number is already a given value
+ * arch_${atomic}_fetch_add_unless - add unless the number is already a given value
* @v: pointer of type ${atomic}_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
* Returns original value of @v
*/
static __always_inline ${int}
-${arch}${atomic}_fetch_add_unless(${atomic}_t *v, ${int} a, ${int} u)
+arch_${atomic}_fetch_add_unless(${atomic}_t *v, ${int} a, ${int} u)
{
- ${int} c = ${arch}${atomic}_read(v);
+ ${int} c = arch_${atomic}_read(v);
do {
if (unlikely(c == u))
break;
- } while (!${arch}${atomic}_try_cmpxchg(v, &c, c + a));
+ } while (!arch_${atomic}_try_cmpxchg(v, &c, c + a));
return c;
}
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_${pfx}inc${sfx}${order}(${atomic}_t *v)
+arch_${atomic}_${pfx}inc${sfx}${order}(${atomic}_t *v)
{
- ${retstmt}${arch}${atomic}_${pfx}add${sfx}${order}(1, v);
+ ${retstmt}arch_${atomic}_${pfx}add${sfx}${order}(1, v);
}
EOF
cat <<EOF
/**
- * ${arch}${atomic}_inc_and_test - increment and test
+ * arch_${atomic}_inc_and_test - increment and test
* @v: pointer of type ${atomic}_t
*
* Atomically increments @v by 1
* other cases.
*/
static __always_inline bool
-${arch}${atomic}_inc_and_test(${atomic}_t *v)
+arch_${atomic}_inc_and_test(${atomic}_t *v)
{
- return ${arch}${atomic}_inc_return(v) == 0;
+ return arch_${atomic}_inc_return(v) == 0;
}
EOF
cat <<EOF
/**
- * ${arch}${atomic}_inc_not_zero - increment unless the number is zero
+ * arch_${atomic}_inc_not_zero - increment unless the number is zero
* @v: pointer of type ${atomic}_t
*
* Atomically increments @v by 1, if @v is non-zero.
* Returns true if the increment was done.
*/
static __always_inline bool
-${arch}${atomic}_inc_not_zero(${atomic}_t *v)
+arch_${atomic}_inc_not_zero(${atomic}_t *v)
{
- return ${arch}${atomic}_add_unless(v, 1, 0);
+ return arch_${atomic}_add_unless(v, 1, 0);
}
EOF
cat <<EOF
static __always_inline bool
-${arch}${atomic}_inc_unless_negative(${atomic}_t *v)
+arch_${atomic}_inc_unless_negative(${atomic}_t *v)
{
- ${int} c = ${arch}${atomic}_read(v);
+ ${int} c = arch_${atomic}_read(v);
do {
if (unlikely(c < 0))
return false;
- } while (!${arch}${atomic}_try_cmpxchg(v, &c, c + 1));
+ } while (!arch_${atomic}_try_cmpxchg(v, &c, c + 1));
return true;
}
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_read_acquire(const ${atomic}_t *v)
+arch_${atomic}_read_acquire(const ${atomic}_t *v)
{
return smp_load_acquire(&(v)->counter);
}
cat <<EOF
static __always_inline ${ret}
-${arch}${atomic}_${pfx}${name}${sfx}_release(${params})
+arch_${atomic}_${pfx}${name}${sfx}_release(${params})
{
__atomic_release_fence();
- ${retstmt}${arch}${atomic}_${pfx}${name}${sfx}_relaxed(${args});
+ ${retstmt}arch_${atomic}_${pfx}${name}${sfx}_relaxed(${args});
}
EOF
cat <<EOF
static __always_inline void
-${arch}${atomic}_set_release(${atomic}_t *v, ${int} i)
+arch_${atomic}_set_release(${atomic}_t *v, ${int} i)
{
smp_store_release(&(v)->counter, i);
}
cat <<EOF
/**
- * ${arch}${atomic}_sub_and_test - subtract value from variable and test result
+ * arch_${atomic}_sub_and_test - subtract value from variable and test result
* @i: integer value to subtract
* @v: pointer of type ${atomic}_t
*
* other cases.
*/
static __always_inline bool
-${arch}${atomic}_sub_and_test(${int} i, ${atomic}_t *v)
+arch_${atomic}_sub_and_test(${int} i, ${atomic}_t *v)
{
- return ${arch}${atomic}_sub_return(i, v) == 0;
+ return arch_${atomic}_sub_return(i, v) == 0;
}
EOF
cat <<EOF
static __always_inline bool
-${arch}${atomic}_try_cmpxchg${order}(${atomic}_t *v, ${int} *old, ${int} new)
+arch_${atomic}_try_cmpxchg${order}(${atomic}_t *v, ${int} *old, ${int} new)
{
${int} r, o = *old;
- r = ${arch}${atomic}_cmpxchg${order}(v, o, new);
+ r = arch_${atomic}_cmpxchg${order}(v, o, new);
if (unlikely(r != o))
*old = r;
return likely(r == o);
# SPDX-License-Identifier: GPL-2.0
ATOMICDIR=$(dirname $0)
-ARCH=$2
. ${ATOMICDIR}/atomic-tbl.sh
-#gen_template_fallback(template, meta, pfx, name, sfx, order, arch, atomic, int, args...)
+#gen_template_fallback(template, meta, pfx, name, sfx, order, atomic, int, args...)
gen_template_fallback()
{
local template="$1"; shift
local name="$1"; shift
local sfx="$1"; shift
local order="$1"; shift
- local arch="$1"; shift
local atomic="$1"; shift
local int="$1"; shift
- local atomicname="${arch}${atomic}_${pfx}${name}${sfx}${order}"
+ local atomicname="arch_${atomic}_${pfx}${name}${sfx}${order}"
local ret="$(gen_ret_type "${meta}" "${int}")"
local retstmt="$(gen_ret_stmt "${meta}")"
fi
}
-#gen_proto_fallback(meta, pfx, name, sfx, order, arch, atomic, int, args...)
+#gen_proto_fallback(meta, pfx, name, sfx, order, atomic, int, args...)
gen_proto_fallback()
{
local meta="$1"; shift
local name="$1"; shift
local sfx="$1"; shift
local order="$1"; shift
- local arch="$1"
- local atomic="$2"
+ local atomic="$1"
- local basename="${arch}${atomic}_${pfx}${name}${sfx}"
+ local basename="arch_${atomic}_${pfx}${name}${sfx}"
- printf "#define arch_${basename}${order} ${basename}${order}\n"
+ printf "#define ${basename}${order} ${basename}${order}\n"
}
-#gen_proto_order_variants(meta, pfx, name, sfx, arch, atomic, int, args...)
+#gen_proto_order_variants(meta, pfx, name, sfx, atomic, int, args...)
gen_proto_order_variants()
{
local meta="$1"; shift
local pfx="$1"; shift
local name="$1"; shift
local sfx="$1"; shift
- local arch="$1"
- local atomic="$2"
+ local atomic="$1"
- local basename="${arch}${atomic}_${pfx}${name}${sfx}"
+ local basename="arch_${atomic}_${pfx}${name}${sfx}"
local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
- if [ -z "$arch" ]; then
- gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
-
- if meta_has_acquire "${meta}"; then
- gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
- fi
- if meta_has_release "${meta}"; then
- gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
- fi
- if meta_has_relaxed "${meta}"; then
- gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
- fi
-
- echo ""
- fi
-
# If we don't have relaxed atomics, then we don't bother with ordering fallbacks
# read_acquire and set_release need to be templated, though
if ! meta_has_relaxed "${meta}"; then
gen_basic_fallbacks "${basename}"
if [ ! -z "${template}" ]; then
- printf "#endif /* ${arch}${atomic}_${pfx}${name}${sfx} */\n\n"
+ printf "#endif /* ${basename} */\n\n"
gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
local order="$1"; shift;
cat <<EOF
-#ifndef ${ARCH}try_cmpxchg${order}
-#define ${ARCH}try_cmpxchg${order}(_ptr, _oldp, _new) \\
+#ifndef arch_try_cmpxchg${order}
+#define arch_try_cmpxchg${order}(_ptr, _oldp, _new) \\
({ \\
typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \\
- ___r = ${ARCH}cmpxchg${order}((_ptr), ___o, (_new)); \\
+ ___r = arch_cmpxchg${order}((_ptr), ___o, (_new)); \\
if (unlikely(___r != ___o)) \\
*___op = ___r; \\
likely(___r == ___o); \\
})
-#endif /* ${ARCH}try_cmpxchg${order} */
+#endif /* arch_try_cmpxchg${order} */
EOF
}
gen_try_cmpxchg_fallbacks()
{
- printf "#ifndef ${ARCH}try_cmpxchg_relaxed\n"
- printf "#ifdef ${ARCH}try_cmpxchg\n"
+ printf "#ifndef arch_try_cmpxchg_relaxed\n"
+ printf "#ifdef arch_try_cmpxchg\n"
- gen_basic_fallbacks "${ARCH}try_cmpxchg"
+ gen_basic_fallbacks "arch_try_cmpxchg"
- printf "#endif /* ${ARCH}try_cmpxchg */\n\n"
+ printf "#endif /* arch_try_cmpxchg */\n\n"
for order in "" "_acquire" "_release" "_relaxed"; do
gen_try_cmpxchg_fallback "${order}"
done
- printf "#else /* ${ARCH}try_cmpxchg_relaxed */\n"
+ printf "#else /* arch_try_cmpxchg_relaxed */\n"
- gen_order_fallbacks "${ARCH}try_cmpxchg"
+ gen_order_fallbacks "arch_try_cmpxchg"
- printf "#endif /* ${ARCH}try_cmpxchg_relaxed */\n\n"
+ printf "#endif /* arch_try_cmpxchg_relaxed */\n\n"
}
cat << EOF
EOF
-for xchg in "${ARCH}xchg" "${ARCH}cmpxchg" "${ARCH}cmpxchg64"; do
+for xchg in "arch_xchg" "arch_cmpxchg" "arch_cmpxchg64"; do
gen_xchg_fallbacks "${xchg}"
done
gen_try_cmpxchg_fallbacks
grep '^[a-z]' "$1" | while read name meta args; do
- gen_proto "${meta}" "${name}" "${ARCH}" "atomic" "int" ${args}
+ gen_proto "${meta}" "${name}" "atomic" "int" ${args}
done
cat <<EOF
EOF
grep '^[a-z]' "$1" | while read name meta args; do
- gen_proto "${meta}" "${name}" "${ARCH}" "atomic64" "s64" ${args}
+ gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
done
cat <<EOF
* arch_ variants (i.e. arch_atomic_read()/arch_atomic_cmpxchg()) to avoid
* double instrumentation.
*/
-#ifndef _ASM_GENERIC_ATOMIC_INSTRUMENTED_H
-#define _ASM_GENERIC_ATOMIC_INSTRUMENTED_H
+#ifndef _LINUX_ATOMIC_INSTRUMENTED_H
+#define _LINUX_ATOMIC_INSTRUMENTED_H
#include <linux/build_bug.h>
#include <linux/compiler.h>
gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
done
+grep '^[a-z]' "$1" | while read name meta args; do
+ gen_proto "${meta}" "${name}" "atomic_long" "long" ${args}
+done
+
+
for xchg in "xchg" "cmpxchg" "cmpxchg64" "try_cmpxchg"; do
for order in "" "_acquire" "_release" "_relaxed"; do
gen_xchg "${xchg}${order}" ""
cat <<EOF
-#endif /* _ASM_GENERIC_ATOMIC_INSTRUMENTED_H */
+#endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
EOF
cat <<EOF
static __always_inline ${ret}
-atomic_long_${name}(${params})
+arch_atomic_long_${name}(${params})
{
- ${retstmt}${atomic}_${name}(${argscast});
+ ${retstmt}arch_${atomic}_${name}(${argscast});
}
EOF
// Generated by $0
// DO NOT MODIFY THIS FILE DIRECTLY
-#ifndef _ASM_GENERIC_ATOMIC_LONG_H
-#define _ASM_GENERIC_ATOMIC_LONG_H
+#ifndef _LINUX_ATOMIC_LONG_H
+#define _LINUX_ATOMIC_LONG_H
#include <linux/compiler.h>
#include <asm/types.h>
cat <<EOF
#endif /* CONFIG_64BIT */
-#endif /* _ASM_GENERIC_ATOMIC_LONG_H */
+#endif /* _LINUX_ATOMIC_LONG_H */
EOF
LINUXDIR=${ATOMICDIR}/../..
cat <<EOF |
-gen-atomic-instrumented.sh asm-generic/atomic-instrumented.h
-gen-atomic-long.sh asm-generic/atomic-long.h
-gen-atomic-fallback.sh linux/atomic-arch-fallback.h arch_
+gen-atomic-instrumented.sh linux/atomic/atomic-instrumented.h
+gen-atomic-long.sh linux/atomic/atomic-long.h
+gen-atomic-fallback.sh linux/atomic/atomic-arch-fallback.h
EOF
while read script header args; do
/bin/sh ${ATOMICDIR}/${script} ${ATOMICTBL} ${args} > ${LINUXDIR}/include/${header}
git.samba.org / sfrench / cifs-2.6.git / commitdiff