printk_ratelimit() functions should use CONFIG_PRINTK

[sfrench/cifs-2.6.git] / kernel / printk.c

diff --git a/kernel/printk.c b/kernel/printk.c
index 423a8c765a5788fc1b422d87add42d8649ec9d31..bee36100f110ab75617ad4dce16beac9e1434f76 100644 (file)
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -32,10 +32,16 @@
 #include <linux/security.h>
 #include <linux/bootmem.h>
 #include <linux/syscalls.h>
-#include <linux/jiffies.h>
 
 #include <asm/uaccess.h>
 
+/*
+ * Architectures can override it:
+ */
+void __attribute__((weak)) early_printk(const char *fmt, ...)
+{
+}
+
 #define __LOG_BUF_LEN  (1 << CONFIG_LOG_BUF_SHIFT)
 
 /* printk's without a loglevel use this.. */
@@ -86,16 +92,16 @@ static int console_locked, console_suspended;
  */
 static DEFINE_SPINLOCK(logbuf_lock);
 
-#define LOG_BUF_MASK   (log_buf_len-1)
+#define LOG_BUF_MASK (log_buf_len-1)
 #define LOG_BUF(idx) (log_buf[(idx) & LOG_BUF_MASK])
 
 /*
  * The indices into log_buf are not constrained to log_buf_len - they
  * must be masked before subscripting
  */
-static unsigned long log_start;        /* Index into log_buf: next char to be read by syslog() */
-static unsigned long con_start;        /* Index into log_buf: next char to be sent to consoles */
-static unsigned long log_end;  /* Index into log_buf: most-recently-written-char + 1 */
+static unsigned log_start;     /* Index into log_buf: next char to be read by syslog() */
+static unsigned con_start;     /* Index into log_buf: next char to be sent to consoles */
+static unsigned log_end;       /* Index into log_buf: most-recently-written-char + 1 */
 
 /*
  *     Array of consoles built from command line options (console=)
@@ -121,17 +127,17 @@ static int console_may_schedule;
 static char __log_buf[__LOG_BUF_LEN];
 static char *log_buf = __log_buf;
 static int log_buf_len = __LOG_BUF_LEN;
-static unsigned long logged_chars; /* Number of chars produced since last read+clear operation */
+static unsigned logged_chars; /* Number of chars produced since last read+clear operation */
 
 static int __init log_buf_len_setup(char *str)
 {
-       unsigned long size = memparse(str, &str);
+       unsigned size = memparse(str, &str);
        unsigned long flags;
 
        if (size)
                size = roundup_pow_of_two(size);
        if (size > log_buf_len) {
-               unsigned long start, dest_idx, offset;
+               unsigned start, dest_idx, offset;
                char *new_log_buf;
 
                new_log_buf = alloc_bootmem(size);
@@ -288,7 +294,7 @@ int log_buf_read(int idx)
  */
 int do_syslog(int type, char __user *buf, int len)
 {
-       unsigned long i, j, limit, count;
+       unsigned i, j, limit, count;
        int do_clear = 0;
        char c;
        int error = 0;
@@ -429,7 +435,7 @@ asmlinkage long sys_syslog(int type, char __user *buf, int len)
 /*
  * Call the console drivers on a range of log_buf
  */
-static void __call_console_drivers(unsigned long start, unsigned long end)
+static void __call_console_drivers(unsigned start, unsigned end)
 {
        struct console *con;
 
@@ -448,16 +454,16 @@ static int __init ignore_loglevel_setup(char *str)
        ignore_loglevel = 1;
        printk(KERN_INFO "debug: ignoring loglevel setting.\n");
 
-       return 1;
+       return 0;
 }
 
-__setup("ignore_loglevel", ignore_loglevel_setup);
+early_param("ignore_loglevel", ignore_loglevel_setup);
 
 /*
  * Write out chars from start to end - 1 inclusive
  */
-static void _call_console_drivers(unsigned long start,
-                               unsigned long end, int msg_log_level)
+static void _call_console_drivers(unsigned start,
+                               unsigned end, int msg_log_level)
 {
        if ((msg_log_level < console_loglevel || ignore_loglevel) &&
                        console_drivers && start != end) {
@@ -477,12 +483,12 @@ static void _call_console_drivers(unsigned long start,
  * log_buf[start] to log_buf[end - 1].
  * The console_sem must be held.
  */
-static void call_console_drivers(unsigned long start, unsigned long end)
+static void call_console_drivers(unsigned start, unsigned end)
 {
-       unsigned long cur_index, start_print;
+       unsigned cur_index, start_print;
        static int msg_level = -1;
 
-       BUG_ON(((long)(start - end)) > 0);
+       BUG_ON(((int)(start - end)) > 0);
 
        cur_index = start;
        start_print = start;
@@ -560,19 +566,6 @@ static int printk_time = 0;
 #endif
 module_param_named(time, printk_time, bool, S_IRUGO | S_IWUSR);
 
-static int __init printk_time_setup(char *str)
-{
-       if (*str)
-               return 0;
-       printk_time = 1;
-       printk(KERN_NOTICE "The 'time' option is deprecated and "
-               "is scheduled for removal in early 2008\n");
-       printk(KERN_NOTICE "Use 'printk.time=<value>' instead\n");
-       return 1;
-}
-
-__setup("time", printk_time_setup);
-
 /* Check if we have any console registered that can be called early in boot. */
 static int have_callable_console(void)
 {
@@ -702,9 +695,7 @@ asmlinkage int vprintk(const char *fmt, va_list args)
                                        loglev_char = default_message_loglevel
                                                + '0';
                                }
-                               t = 0;
-                               if (system_state != SYSTEM_BOOTING)
-                                       t = ktime_to_ns(ktime_get());
+                               t = cpu_clock(printk_cpu);
                                nanosec_rem = do_div(t, 1000000000);
                                tlen = sprintf(tbuf,
                                                "<%c>[%5lu.%06lu] ",
@@ -785,7 +776,7 @@ asmlinkage long sys_syslog(int type, char __user *buf, int len)
        return -ENOSYS;
 }
 
-static void call_console_drivers(unsigned long start, unsigned long end)
+static void call_console_drivers(unsigned start, unsigned end)
 {
 }
 
@@ -978,8 +969,8 @@ void wake_up_klogd(void)
 void release_console_sem(void)
 {
        unsigned long flags;
-       unsigned long _con_start, _log_end;
-       unsigned long wake_klogd = 0;
+       unsigned _con_start, _log_end;
+       unsigned wake_klogd = 0;
 
        if (console_suspended) {
                up(&secondary_console_sem);
@@ -1260,6 +1251,7 @@ void tty_write_message(struct tty_struct *tty, char *msg)
        return;
 }
 
+#if defined CONFIG_PRINTK
 /*
  * printk rate limiting, lifted from the networking subsystem.
  *
@@ -1270,7 +1262,7 @@ void tty_write_message(struct tty_struct *tty, char *msg)
 int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst)
 {
        static DEFINE_SPINLOCK(ratelimit_lock);
-       static unsigned long toks = 10 * 5 * HZ;
+       static unsigned toks = 10 * 5 * HZ;
        static unsigned long last_msg;
        static int missed;
        unsigned long flags;
@@ -1329,3 +1321,4 @@ bool printk_timed_ratelimit(unsigned long *caller_jiffies,
        return false;
 }
 EXPORT_SYMBOL(printk_timed_ratelimit);
+#endif