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[MIPS] Kill num_online_cpus() loops.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-10-03 19:16:57 +01:00
parent bd6aeeffcc
commit b5eb551145
4 changed files with 27 additions and 18 deletions
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4
arch/mips/kernel/gdb-stub.c
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@ -769,7 +769,7 @@ void handle_exception(struct gdb_regs *regs)
/*
* acquire the CPU spinlocks
*/
for (i = num_online_cpus()-1; i >= 0; i--)
for_each_online_cpu(i)
if (__raw_spin_trylock(&kgdb_cpulock[i]) == 0)
panic("kgdb: couldn't get cpulock %d\n", i);
@ -1044,7 +1044,7 @@ finish_kgdb:
exit_kgdb_exception:
/* release locks so other CPUs can go */
for (i = num_online_cpus()-1; i >= 0; i--)
for_each_online_cpu(i)
__raw_spin_unlock(&kgdb_cpulock[i]);
spin_unlock(&kgdb_lock);

33
arch/mips/kernel/smp.c
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@ -375,10 +375,13 @@ void flush_tlb_mm(struct mm_struct *mm)
if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
smp_on_other_tlbs(flush_tlb_mm_ipi, (void *)mm);
} else {
int i;
for (i = 0; i < num_online_cpus(); i++)
if (smp_processor_id() != i)
cpu_context(i, mm) = 0;
cpumask_t mask = cpu_online_map;
unsigned int cpu;
cpu_clear(smp_processor_id(), mask);
for_each_online_cpu(cpu)
if (cpu_context(cpu, mm))
cpu_context(cpu, mm) = 0;
}
local_flush_tlb_mm(mm);
@ -411,10 +414,13 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned l
fd.addr2 = end;
smp_on_other_tlbs(flush_tlb_range_ipi, (void *)&fd);
} else {
int i;
for (i = 0; i < num_online_cpus(); i++)
if (smp_processor_id() != i)
cpu_context(i, mm) = 0;
cpumask_t mask = cpu_online_map;
unsigned int cpu;
cpu_clear(smp_processor_id(), mask);
for_each_online_cpu(cpu)
if (cpu_context(cpu, mm))
cpu_context(cpu, mm) = 0;
}
local_flush_tlb_range(vma, start, end);
preempt_enable();
@ -453,10 +459,13 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
fd.addr1 = page;
smp_on_other_tlbs(flush_tlb_page_ipi, (void *)&fd);
} else {
int i;
for (i = 0; i < num_online_cpus(); i++)
if (smp_processor_id() != i)
cpu_context(i, vma->vm_mm) = 0;
cpumask_t mask = cpu_online_map;
unsigned int cpu;
cpu_clear(smp_processor_id(), mask);
for_each_online_cpu(cpu)
if (cpu_context(cpu, vma->vm_mm))
cpu_context(cpu, vma->vm_mm) = 0;
}
local_flush_tlb_page(vma, page);
preempt_enable();

4
arch/mips/kernel/smtc.c
View File

@ -1264,7 +1264,7 @@ void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu)
if (cpu_has_vtag_icache)
flush_icache_all();
/* Traverse all online CPUs (hack requires contigous range) */
for (i = 0; i < num_online_cpus(); i++) {
for_each_online_cpu(i) {
/*
* We don't need to worry about our own CPU, nor those of
* CPUs who don't share our TLB.
@ -1293,7 +1293,7 @@ void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu)
/*
* SMTC shares the TLB within VPEs and possibly across all VPEs.
*/
for (i = 0; i < num_online_cpus(); i++) {
for_each_online_cpu(i) {
if ((smtc_status & SMTC_TLB_SHARED) ||
(cpu_data[i].vpe_id == cpu_data[cpu].vpe_id))
cpu_context(i, mm) = asid_cache(i) = asid;

4
include/asm-mips/mmu_context.h
View File

@ -120,7 +120,7 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
int i;
for (i = 0; i < num_online_cpus(); i++)
for_each_online_cpu(i)
cpu_context(i, mm) = 0;
return 0;
@ -284,7 +284,7 @@ drop_mmu_context(struct mm_struct *mm, unsigned cpu)
int i;
/* SMTC shares the TLB (and ASIDs) across VPEs */
for (i = 0; i < num_online_cpus(); i++) {
for_each_online_cpu(i) {
if((smtc_status & SMTC_TLB_SHARED)
|| (cpu_data[i].vpe_id == cpu_data[cpu].vpe_id))
cpu_context(i, mm) = 0;