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| author | Christoph Lameter <clameter@sgi.com> | 2008-02-04 22:29:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:18 -0800 |
| commit | 9eccf2a816ed0aad82b577de6a40cd098ad41944 (patch) | |
| tree | 28d971fbb701d545b54f9f5fdf71c12940d2b8df /mm/vmstat.c | |
| parent | 7766755a2f249e7e0dabc5255a0a3d151ff79821 (diff) | |
| download | linux-3.10-9eccf2a816ed0aad82b577de6a40cd098ad41944.tar.gz linux-3.10-9eccf2a816ed0aad82b577de6a40cd098ad41944.tar.bz2 linux-3.10-9eccf2a816ed0aad82b577de6a40cd098ad41944.zip | |
vmstat: remove prefetch
Remove the prefetch logic in order to avoid touching impossible per cpu
areas.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Mike Travis <travis@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 888668e0b7d..422d960ffcd 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -21,21 +21,14 @@ EXPORT_PER_CPU_SYMBOL(vm_event_states); static void sum_vm_events(unsigned long *ret, cpumask_t *cpumask) { - int cpu = 0; + int cpu; int i; memset(ret, 0, NR_VM_EVENT_ITEMS * sizeof(unsigned long)); - cpu = first_cpu(*cpumask); - while (cpu < NR_CPUS) { + for_each_cpu_mask(cpu, *cpumask) { struct vm_event_state *this = &per_cpu(vm_event_states, cpu); - cpu = next_cpu(cpu, *cpumask); - - if (cpu < NR_CPUS) - prefetch(&per_cpu(vm_event_states, cpu)); - - for (i = 0; i < NR_VM_EVENT_ITEMS; i++) ret[i] += this->event[i]; } |