From: Li RongQing Date: Fri, 30 Jan 2026 08:56:03 +0000 (-0500) Subject: mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06f5ff36e418bc72c758730e7256b1b8ac04e6b4;p=thirdparty%2Fkernel%2Fstable.git mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles The 'memory_idle_ms_percentiles' array in DAMON_STAT is updated frequently by the kernel to reflect the latest idle time statistics. Marking it as '__read_mostly' is inappropriate for data that is regularly written to, as it can lead to cache pollution in the read-mostly section. Remove the '__read_mostly' annotation to accurately reflect the variable's usage pattern. Link: https://lkml.kernel.org/r/20260130085603.1814-1-lirongqing@baidu.com Signed-off-by: Li RongQing Reviewed-by: SeongJae Park Signed-off-by: Andrew Morton --- diff --git a/mm/damon/stat.c b/mm/damon/stat.c index 536f02bd173e..bcf6c8ae9b90 100644 --- a/mm/damon/stat.c +++ b/mm/damon/stat.c @@ -34,7 +34,7 @@ module_param(estimated_memory_bandwidth, ulong, 0400); MODULE_PARM_DESC(estimated_memory_bandwidth, "Estimated memory bandwidth usage in bytes per second"); -static long memory_idle_ms_percentiles[101] __read_mostly = {0,}; +static long memory_idle_ms_percentiles[101] = {0,}; module_param_array(memory_idle_ms_percentiles, long, NULL, 0400); MODULE_PARM_DESC(memory_idle_ms_percentiles, "Memory idle time percentiles in milliseconds");