diff options
| author | Li RongQing <lirongqing@baidu.com> | 2026-01-30 11:56:03 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-02-07 02:47:17 +0300 |
| commit | 06f5ff36e418bc72c758730e7256b1b8ac04e6b4 (patch) | |
| tree | 1d7e5a431ed4ec11fc0ffab2506ac2414955d84b | |
| parent | 3881b00a2cead778d070f72aa534f0ed589fb4c3 (diff) | |
| download | linux-06f5ff36e418bc72c758730e7256b1b8ac04e6b4.tar.xz | |
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>
| -rw-r--r-- | mm/damon/stat.c | 2 |
1 files changed, 1 insertions, 1 deletions
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"); |