diff options
| author | Huang Ying <ying.huang@intel.com> | 2024-01-26 16:19:44 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-22 10:24:41 -0800 |
| commit | 5cec4eb7fad6fb1e9a3dd8403b558d1eff7490ff (patch) | |
| tree | 4c0221b586d5d937922a89ee0cb7c1c4b076192d /include/linux/gfp.h | |
| parent | 96200c915040c2ec6f6c173a29caf9f7c9c15a7e (diff) | |
| download | linux-5cec4eb7fad6fb1e9a3dd8403b558d1eff7490ff.tar.gz | |
mm and cache_info: remove unnecessary CPU cache info update
For each CPU hotplug event, we will update per-CPU data slice size and
corresponding PCP configuration for every online CPU to make the
implementation simple. But, Kyle reported that this takes tens seconds
during boot on a machine with 34 zones and 3840 CPUs.
So, in this patch, for each CPU hotplug event, we only update per-CPU data
slice size and corresponding PCP configuration for the CPUs that share
caches with the hotplugged CPU. With the patch, the system boot time
reduces 67 seconds on the machine.
Link: https://lkml.kernel.org/r/20240126081944.414520-1-ying.huang@intel.com
Fixes: 362d37a106dd ("mm, pcp: reduce lock contention for draining high-order pages")
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Originally-by: Kyle Meyer <kyle.meyer@hpe.com>
Reported-and-tested-by: Kyle Meyer <kyle.meyer@hpe.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/gfp.h')
| -rw-r--r-- | include/linux/gfp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index de292a0071389..09e22091f1b03 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -334,7 +334,7 @@ void drain_all_pages(struct zone *zone); void drain_local_pages(struct zone *zone); void page_alloc_init_late(void); -void setup_pcp_cacheinfo(void); +void setup_pcp_cacheinfo(unsigned int cpu); /* * gfp_allowed_mask is set to GFP_BOOT_MASK during early boot to restrict what |