IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

[sfrench/cifs-2.6.git] / arch / i386 / mach-voyager / voyager_smp.c

diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c
index 856c73fcb7e76b0fcc27aa7956ce1ed0258384df..d42422fc4af3bac44b6a7c4498d7ebfd381039c1 100644 (file)
--- a/arch/i386/mach-voyager/voyager_smp.c
+++ b/arch/i386/mach-voyager/voyager_smp.c
@@ -126,10 +126,10 @@ send_QIC_CPI(__u32 cpuset, __u8 cpi)
 }
 
 static inline void
-wrapper_smp_local_timer_interrupt(struct pt_regs *regs)
+wrapper_smp_local_timer_interrupt(void)
 {
        irq_enter();
-       smp_local_timer_interrupt(regs);
+       smp_local_timer_interrupt();
        irq_exit();
 }
 
@@ -786,7 +786,7 @@ fastcall void
 smp_vic_sys_interrupt(struct pt_regs *regs)
 {
        ack_CPI(VIC_SYS_INT);
-       printk("Voyager SYSTEM INTERRUPT\n");
+       printk("Voyager SYSTEM INTERRUPT\n");   
 }
 
 /* Handle a voyager CMN_INT; These interrupts occur either because of
@@ -1135,7 +1135,9 @@ EXPORT_SYMBOL(smp_call_function);
 fastcall void 
 smp_apic_timer_interrupt(struct pt_regs *regs)
 {
-       wrapper_smp_local_timer_interrupt(regs);
+       struct pt_regs *old_regs = set_irq_regs(regs);
+       wrapper_smp_local_timer_interrupt();
+       set_irq_regs(old_regs);
 }
 
 /* All of the QUAD interrupt GATES */
@@ -1143,7 +1145,9 @@ fastcall void
 smp_qic_timer_interrupt(struct pt_regs *regs)
 {
        ack_QIC_CPI(QIC_TIMER_CPI);
-       wrapper_smp_local_timer_interrupt(regs);
+       struct pt_regs *old_regs = set_irq_regs(regs);
+       wrapper_smp_local_timer_interrupt(void);
+       set_irq_regs(old_regs);
 }
 
 fastcall void
@@ -1177,6 +1181,7 @@ smp_qic_call_function_interrupt(struct pt_regs *regs)
 fastcall void
 smp_vic_cpi_interrupt(struct pt_regs *regs)
 {
+       struct pt_regs *old_regs = set_irq_regs(regs);
        __u8 cpu = smp_processor_id();
 
        if(is_cpu_quad())
@@ -1185,7 +1190,7 @@ smp_vic_cpi_interrupt(struct pt_regs *regs)
                ack_VIC_CPI(VIC_CPI_LEVEL0);
 
        if(test_and_clear_bit(VIC_TIMER_CPI, &vic_cpi_mailbox[cpu]))
-               wrapper_smp_local_timer_interrupt(regs);
+               wrapper_smp_local_timer_interrupt();
        if(test_and_clear_bit(VIC_INVALIDATE_CPI, &vic_cpi_mailbox[cpu]))
                smp_invalidate_interrupt();
        if(test_and_clear_bit(VIC_RESCHEDULE_CPI, &vic_cpi_mailbox[cpu]))
@@ -1194,6 +1199,7 @@ smp_vic_cpi_interrupt(struct pt_regs *regs)
                smp_enable_irq_interrupt();
        if(test_and_clear_bit(VIC_CALL_FUNCTION_CPI, &vic_cpi_mailbox[cpu]))
                smp_call_function_interrupt();
+       set_irq_regs(old_regs);
 }
 
 static void
@@ -1266,8 +1272,10 @@ smp_send_stop(void)
 void
 smp_vic_timer_interrupt(struct pt_regs *regs)
 {
+       struct pt_regs *old_regs = set_irq_regs(regs);
        send_CPI_allbutself(VIC_TIMER_CPI);
-       smp_local_timer_interrupt(regs);
+       smp_local_timer_interrupt();
+       set_irq_regs(old_regs);
 }
 
 /* local (per CPU) timer interrupt.  It does both profiling and
@@ -1279,12 +1287,12 @@ smp_vic_timer_interrupt(struct pt_regs *regs)
  * value into /proc/profile.
  */
 void
-smp_local_timer_interrupt(struct pt_regs * regs)
+smp_local_timer_interrupt(void)
 {
        int cpu = smp_processor_id();
        long weight;
 
-       profile_tick(CPU_PROFILING, regs);
+       profile_tick(CPU_PROFILING);
        if (--per_cpu(prof_counter, cpu) <= 0) {
                /*
                 * The multiplier may have changed since the last time we got
@@ -1302,7 +1310,7 @@ smp_local_timer_interrupt(struct pt_regs * regs)
                                                per_cpu(prof_counter, cpu);
                }
 
-               update_process_times(user_mode_vm(regs));
+               update_process_times(user_mode_vm(irq_regs));
        }
 
        if( ((1<<cpu) & voyager_extended_vic_processors) == 0)