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 <lirongqing@baidu.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/damon/stat.c b/mm/damon/stat.c
index 536f02bd173e352c0cac3dc42550bc45bb6b1d48..bcf6c8ae9b9061f605b91ad360e210a52d6f68f0 100644 (file)
--- 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");