Subject: [folded-merged] slub-use-raw_cpu_inc-for-incrementing-statistics-fix.patch removed from -mm tree
To: akpm@xxxxxxxxxxxxxxxxxxxx,cl@xxxxxxxxx,fengguang.wu@xxxxxxxxx,penberg@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 07 Apr 2014 15:19:28 -0700
The patch titled
Subject: slub-use-raw_cpu_inc-for-incrementing-statistics-fix
has been removed from the -mm tree. Its filename was
slub-use-raw_cpu_inc-for-incrementing-statistics-fix.patch
This patch was dropped because it was folded into slub-use-raw_cpu_inc-for-incrementing-statistics.patch
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: slub-use-raw_cpu_inc-for-incrementing-statistics-fix
add comment
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Fengguang Wu <fengguang.wu@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN mm/slub.c~slub-use-raw_cpu_inc-for-incrementing-statistics-fix mm/slub.c
--- a/mm/slub.c~slub-use-raw_cpu_inc-for-incrementing-statistics-fix
+++ a/mm/slub.c
@@ -224,6 +224,10 @@ static inline void memcg_propagate_slab_
static inline void stat(const struct kmem_cache *s, enum stat_item si)
{
#ifdef CONFIG_SLUB_STATS
+ /*
+ * The rmw is racy on a preemptible kernel but this is acceptable, so
+ * avoid this_cpu_add()'s irq-disable overhead.
+ */
raw_cpu_inc(s->cpu_slab->stat[si]);
#endif
}
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
mmnuma-reorganize-change_pmd_range.patch
drivers-lguest-page_tablesc-rename-do_set_pte.patch
mm-add-debugfs-tunable-for-fault_around_order.patch
mm-per-thread-vma-caching.patch
mm-use-macros-from-compilerh-instead-of-__attribute__.patch
mm-vmallocc-enhance-vm_map_ram-comment.patch
mm-readaheadc-inline-ra_submit.patch
zram-use-zcomp-compressing-backends.patch
zram-return-error-valued-pointer-from-zcomp_create.patch
zram-propagate-error-to-user.patch
zram-support-req_discard.patch
include-linux-crash_dumph-add-vmcore_cleanup-prototype.patch
kernel-panicc-display-reason-at-end-pr_emerg.patch
fault-injection-set-bounds-on-what-proc-self-make-it-fail-accepts.patch
initramfs-debug-detected-compression-method.patch
slub-use-raw_cpu_inc-for-incrementing-statistics.patch
vmstat-use-raw_cpu_ops-to-avoid-false-positives-on-preemption-checks-fix.patch
percpu-add-preemption-checks-to-__this_cpu-ops-fix-checkpatch-fixes.patch
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