Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
m32r: make flush_cpumask non-volatile.
We cast away the volatile, but really, why make it volatile at all?
We already do a mb() inside the cpumask_empty() loop.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
authored by
Rusty Russell
and committed by
Linus Torvalds
1a9f064f
95c607d9
+3
-3
+3
-3
arch/m32r/kernel/smp.c
+3
-3
arch/m32r/kernel/smp.c
···
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/*
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* For flush_tlb_others()
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*/
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-
static volatile cpumask_t flush_cpumask;
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+
static cpumask_t flush_cpumask;
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static struct mm_struct *flush_mm;
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static struct vm_area_struct *flush_vma;
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static volatile unsigned long flush_va;
···
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*/
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send_IPI_mask(&cpumask, INVALIDATE_TLB_IPI, 0);
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-
while (!cpumask_empty((cpumask_t*)&flush_cpumask)) {
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while (!cpumask_empty(&flush_cpumask)) {
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/* nothing. lockup detection does not belong here */
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mb();
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}
···
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__flush_tlb_page(va);
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}
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}
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cpumask_clear_cpu(cpu_id, (cpumask_t*)&flush_cpumask);
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cpumask_clear_cpu(cpu_id, &flush_cpumask);
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}
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/*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*/