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| author | SeongJae Park <sj@kernel.org> | 2025-02-20 01:01:45 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-03-17 08:06:32 +0300 |
| commit | f809b9f3046f702bc1ae40695acb27c1b0abc346 (patch) | |
| tree | ee07550fe4ac46ababa6e22f0e369ee779cd4679 /include/linux | |
| parent | 2560c8c3f41d7a53e1554d1e4f207bf966e7527f (diff) | |
| download | linux-f809b9f3046f702bc1ae40695acb27c1b0abc346.tar.xz | |
mm/damon: implement a new DAMOS filter type for unmapped pages
Patch series "mm/damon: introduce DAMOS filter type for unmapped pages".
User decides whether their memory will be mapped or unmapped. It implies
that the two types of memory can have different characteristics and
management requirements. Provide the DAMON-observaibility DAMOS-operation
capability for the different types by introducing a new DAMOS filter type
for unmapped pages.
This patch (of 2):
Implement yet another DAMOS filter type for unmapped pages on DAMON kernel
API, and add support of it from the physical address space DAMON
operations set (paddr). Since it is for only unmapped pages, support from
the virtual address spaces DAMON operations set (vaddr) is not required.
Link: https://lkml.kernel.org/r/20250219220146.133650-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20250219220146.133650-2-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/damon.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/damon.h b/include/linux/damon.h index 5e7ae7bca5dc..242910b190c9 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -337,6 +337,7 @@ struct damos_stat { * @DAMOS_FILTER_TYPE_MEMCG: Specific memcg's pages. * @DAMOS_FILTER_TYPE_YOUNG: Recently accessed pages. * @DAMOS_FILTER_TYPE_HUGEPAGE_SIZE: Page is part of a hugepage. + * @DAMOS_FILTER_TYPE_UNMAPPED: Unmapped pages. * @DAMOS_FILTER_TYPE_ADDR: Address range. * @DAMOS_FILTER_TYPE_TARGET: Data Access Monitoring target. * @NR_DAMOS_FILTER_TYPES: Number of filter types. @@ -357,6 +358,7 @@ enum damos_filter_type { DAMOS_FILTER_TYPE_MEMCG, DAMOS_FILTER_TYPE_YOUNG, DAMOS_FILTER_TYPE_HUGEPAGE_SIZE, + DAMOS_FILTER_TYPE_UNMAPPED, DAMOS_FILTER_TYPE_ADDR, DAMOS_FILTER_TYPE_TARGET, NR_DAMOS_FILTER_TYPES, |