fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / m32r / kernel / smp.c

diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 48b187f..3601291 100644 (file)
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -101,7 +101,7 @@ void smp_call_function_interrupt(void);
 
 void smp_send_timer(void);
 void smp_ipi_timer_interrupt(struct pt_regs *);
-void smp_local_timer_interrupt(struct pt_regs *);
+void smp_local_timer_interrupt(void);
 
 void send_IPI_allbutself(int, int);
 static void send_IPI_mask(cpumask_t, int, int);
@@ -231,7 +231,7 @@ void smp_flush_tlb_all(void)
        local_irq_save(flags);
        __flush_tlb_all();
        local_irq_restore(flags);
-       smp_call_function(flush_tlb_all_ipi, 0, 1, 1);
+       smp_call_function(flush_tlb_all_ipi, NULL, 1, 1);
        preempt_enable();
 }
 
@@ -275,12 +275,14 @@ static void flush_tlb_all_ipi(void *info)
  *==========================================================================*/
 void smp_flush_tlb_mm(struct mm_struct *mm)
 {
-       int cpu_id = smp_processor_id();
+       int cpu_id;
        cpumask_t cpu_mask;
-       unsigned long *mmc = &mm->context[cpu_id];
+       unsigned long *mmc;
        unsigned long flags;
 
        preempt_disable();
+       cpu_id = smp_processor_id();
+       mmc = &mm->context[cpu_id];
        cpu_mask = mm->cpu_vm_mask;
        cpu_clear(cpu_id, cpu_mask);
 
@@ -343,12 +345,14 @@ void smp_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long va)
 {
        struct mm_struct *mm = vma->vm_mm;
-       int cpu_id = smp_processor_id();
+       int cpu_id;
        cpumask_t cpu_mask;
-       unsigned long *mmc = &mm->context[cpu_id];
+       unsigned long *mmc;
        unsigned long flags;
 
        preempt_disable();
+       cpu_id = smp_processor_id();
+       mmc = &mm->context[cpu_id];
        cpu_mask = mm->cpu_vm_mask;
        cpu_clear(cpu_id, cpu_mask);
 
@@ -730,9 +734,12 @@ void smp_send_timer(void)
  *==========================================================================*/
 void smp_ipi_timer_interrupt(struct pt_regs *regs)
 {
+       struct pt_regs *old_regs;
+       old_regs = set_irq_regs(regs);
        irq_enter();
-       smp_local_timer_interrupt(regs);
+       smp_local_timer_interrupt();
        irq_exit();
+       set_irq_regs(old_regs);
 }
 
 /*==========================================================================*
@@ -758,9 +765,9 @@ void smp_ipi_timer_interrupt(struct pt_regs *regs)
  * ---------- --- --------------------------------------------------------
  * 2003-06-24 hy  use per_cpu structure.
  *==========================================================================*/
-void smp_local_timer_interrupt(struct pt_regs *regs)
+void smp_local_timer_interrupt(void)
 {
-       int user = user_mode(regs);
+       int user = user_mode(get_irq_regs());
        int cpu_id = smp_processor_id();
 
        /*
@@ -770,7 +777,7 @@ void smp_local_timer_interrupt(struct pt_regs *regs)
         * useful with a profiling multiplier != 1
         */
 
-       profile_tick(CPU_PROFILING, regs);
+       profile_tick(CPU_PROFILING);
 
        if (--per_cpu(prof_counter, cpu_id) <= 0) {
                /*
@@ -892,7 +899,6 @@ unsigned long send_IPI_mask_phys(cpumask_t physid_mask, int ipi_num,
        int try)
 {
        spinlock_t *ipilock;
-       unsigned long flags = 0;
        volatile unsigned long *ipicr_addr;
        unsigned long ipicr_val;
        unsigned long my_physid_mask;
@@ -916,50 +922,27 @@ unsigned long send_IPI_mask_phys(cpumask_t physid_mask, int ipi_num,
         * write IPICRi (send IPIi)
         * unlock ipi_lock[i]
         */
+       spin_lock(ipilock);
        __asm__ __volatile__ (
-               ";; LOCK ipi_lock[i]            \n\t"
+               ";; CHECK IPICRi == 0           \n\t"
                ".fillinsn                      \n"
                "1:                             \n\t"
-               "mvfc   %1, psw                 \n\t"
-               "clrpsw #0x40 -> nop            \n\t"
-               DCACHE_CLEAR("r4", "r5", "%2")
-               "lock   r4, @%2                 \n\t"
-               "addi   r4, #-1                 \n\t"
-               "unlock r4, @%2                 \n\t"
-               "mvtc   %1, psw                 \n\t"
-               "bnez   r4, 2f                  \n\t"
-               LOCK_SECTION_START(".balign 4 \n\t")
-               ".fillinsn                      \n"
-               "2:                             \n\t"
-               "ld     r4, @%2                 \n\t"
-               "blez   r4, 2b                  \n\t"
+               "ld     %0, @%1                 \n\t"
+               "and    %0, %4                  \n\t"
+               "beqz   %0, 2f                  \n\t"
+               "bnez   %3, 3f                  \n\t"
                "bra    1b                      \n\t"
-               LOCK_SECTION_END
-               ";; CHECK IPICRi == 0           \n\t"
-               ".fillinsn                      \n"
-               "3:                             \n\t"
-               "ld     %0, @%3                 \n\t"
-               "and    %0, %6                  \n\t"
-               "beqz   %0, 4f                  \n\t"
-               "bnez   %5, 5f                  \n\t"
-               "bra    3b                      \n\t"
                ";; WRITE IPICRi (send IPIi)    \n\t"
                ".fillinsn                      \n"
-               "4:                             \n\t"
-               "st     %4, @%3                 \n\t"
-               ";; UNLOCK ipi_lock[i]          \n\t"
+               "2:                             \n\t"
+               "st     %2, @%1                 \n\t"
                ".fillinsn                      \n"
-               "5:                             \n\t"
-               "ldi    r4, #1                  \n\t"
-               "st     r4, @%2                 \n\t"
+               "3:                             \n\t"
                : "=&r"(ipicr_val)
-               : "r"(flags), "r"(&ipilock->slock), "r"(ipicr_addr),
-                 "r"(mask), "r"(try), "r"(my_physid_mask)
-               : "memory", "r4"
-#ifdef CONFIG_CHIP_M32700_TS1
-               , "r5"
-#endif /* CONFIG_CHIP_M32700_TS1 */
+               : "r"(ipicr_addr), "r"(mask), "r"(try), "r"(my_physid_mask)
+               : "memory"
        );
+       spin_unlock(ipilock);
 
        return ipicr_val;
 }