From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org
Subject: + mm-damon-core-introduce-damon_probe_hits_mvsum.patch added to mm-new branch
Date: Sat, 04 Jul 2026 19:05:24 -0700 [thread overview]
Message-ID: <20260705020525.1A98F1F000E9@smtp.kernel.org> (raw)
The patch titled
Subject: mm/damon/core: introduce damon_probe_hits_mvsum()
has been added to the -mm mm-new branch. Its filename is
mm-damon-core-introduce-damon_probe_hits_mvsum.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-core-introduce-damon_probe_hits_mvsum.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
The mm-new branch of mm.git is not included in linux-next
If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next
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------------------------------------------------------
From: SJ Park <sj@kernel.org>
Subject: mm/damon/core: introduce damon_probe_hits_mvsum()
Date: Fri, 3 Jul 2026 10:06:02 -0700
Implement a function for getting a reasonable best effort quality pseudo
moving sums of probe_hits on demands. It reuses the internal function for
the pseudo moving sum for data access frequency (nr_accesses).
Link: https://lore.kernel.org/20260703170605.94472-3-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/damon.h | 2 ++
mm/damon/core.c | 21 +++++++++++++++++++++
2 files changed, 23 insertions(+)
--- a/include/linux/damon.h~mm-damon-core-introduce-damon_probe_hits_mvsum
+++ a/include/linux/damon.h
@@ -1003,6 +1003,8 @@ void damon_add_probe(struct damon_ctx *c
struct damon_region *damon_new_region(unsigned long start, unsigned long end);
unsigned int damon_nr_accesses_mvsum(struct damon_region *r,
struct damon_ctx *ctx);
+unsigned char damon_probe_hits_mvsum(int probe_idx, struct damon_region *r,
+ struct damon_ctx *ctx);
int damon_set_regions(struct damon_target *t, struct damon_addr_range *ranges,
unsigned int nr_ranges, unsigned long min_region_sz);
--- a/mm/damon/core.c~mm-damon-core-introduce-damon_probe_hits_mvsum
+++ a/mm/damon/core.c
@@ -273,6 +273,27 @@ unsigned int damon_nr_accesses_mvsum(str
left_window_bp);
}
+unsigned char damon_probe_hits_mvsum(int probe_idx, struct damon_region *r,
+ struct damon_ctx *ctx)
+{
+ unsigned long sample_interval, aggr_interval;
+ unsigned long window_len, left_window, left_window_bp;
+
+ sample_interval = ctx->attrs.sample_interval ? : 1;
+ aggr_interval = ctx->attrs.aggr_interval ? : 1;
+ window_len = aggr_interval / sample_interval;
+ if (time_after_eq(ctx->passed_sample_intervals,
+ ctx->next_aggregation_sis))
+ left_window = 0;
+ else
+ left_window = ctx->next_aggregation_sis -
+ ctx->passed_sample_intervals;
+ left_window_bp = mult_frac(left_window, 10000, window_len);
+
+ return damon_mvsum(r->probe_hits[probe_idx],
+ r->last_probe_hits[probe_idx], left_window_bp);
+}
+
#ifdef CONFIG_DAMON_DEBUG_SANITY
static void damon_verify_new_region(unsigned long start, unsigned long end)
{
_
Patches currently in -mm which might be from sj@kernel.org are
maintainers-s-seongjae-sj.patch
mm-damon-core-validate-ranges-in-damon_set_regions.patch
samples-damon-wsse-handle-damon_start-failure.patch
samples-damon-prcl-handle-damon_start-failure.patch
samples-damon-mtier-handle-damon_start-failure.patch
samples-damon-mtier-handle-damon_stop-failure.patch
samples-damon-wsse-stop-and-free-damon-ctx-when-damon_call-fails.patch
samples-damon-prcl-stop-and-free-damon-ctx-when-damon_call-fails.patch
mm-damon-sysfs-kobject_del-target-normal-context-and-kdamond-dirs.patch
mm-damon-sysfs-kobject_del-region-and-target-error-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-region-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-filter-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-quota-goal-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-action-destination-dirs.patch
mm-damon-sysfs-kobject_del-probe-dirs.patch
mm-damon-sysfs-kobject_del-probe-filter-dirs.patch
mm-damon-sysfs-kobject_del-probe-dirs-in-probes_addd_dir-error-path.patch
mm-damon-sysfs-schemes-kobject_del-region-for-populate_region-error.patch
docs-mm-damon-design-update-for-damos_quota_node_eligible_mem_bp.patch
docs-abi-damon-document-probe-files.patch
mm-damon-tests-core-kunit-test-damon_rand.patch
selftests-damon-sysfssh-test-multiple-probe-dirs-creation.patch
selftests-damon-sysfssh-test-coreops_filters-directories.patch
selftests-damon-sysfssh-test-dests-dir.patch
selftests-damon-sysfssh-test-all-files-in-quota-goal-dir.patch
mm-damon-core-reduce-range-setup-in-damon_commit_target_regions.patch
mm-damon-sysfs-split-probe-setup-function-out.patch
mm-damon-sysfs-split-out-filters-setup-function.patch
mm-damon-sysfs-fix-typos-in-probe_addrm_dirs-s-attr-probe.patch
mm-damon-core-introduce-damon_nr_accesses_mvsum.patch
mm-damon-tests-core-kunit-test-damon_mvsum.patch
mm-damon-core-always-update-last_nr_accesses-for-intervals-change.patch
mm-damon-core-handle-unreset-nr_accesses-in-damon_nr_accesses_mvsum.patch
mm-damon-core-use-damon_nr_accesses_mvsum-in-__damos_valid_target.patch
mm-damon-core-use-damon_nr_accesses_mvsum-for-damos-region-tracing.patch
mm-damon-sysfs-schemes-use-damon_nr_accesses_mvsum-for-damo-regions.patch
mm-damon-core-remove-damon_warn_fix_nr_accesses_corruption.patch
mm-damon-core-remove-damon_verify_reset_aggregated.patch
mm-damon-core-remove-damon_verify_merge_regions_of.patch
mm-damon-tests-core-kunit-remove-nr_accesses_bp-setup-and-tests.patch
selftests-damon-drgn_dump_damon_status-do-not-dump-nr_accesses_bp.patch
mm-damon-core-remove-nr_accesses_bp-setups-and-updates.patch
mm-damon-core-remove-attrs-param-from-damon_update_region_access_rate.patch
mm-damon-paddr-remove-attrs-param-from-__damon_pa_check_access.patch
mm-damon-vaddr-remove-attrs-param-from-__damon_va_check_access.patch
mm-damon-core-remove-damon_moving_sum-and-its-unit-test.patch
mm-damon-core-remove-damon_region-nr_accesses_bp.patch
mm-damon-add-damon_region-last_probe_hits.patch
mm-damon-core-introduce-damon_probe_hits_mvsum.patch
mm-damon-sysfs-schemes-set-probe-hits-as-pseudo-moving-sums.patch
mm-damon-core-disallow-overlapping-input-ranges-for-damon_set_regions.patch
next reply other threads:[~2026-07-05 2:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-05 2:05 Andrew Morton [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-07-05 2:05 + mm-damon-core-introduce-damon_probe_hits_mvsum.patch added to mm-new branch Andrew Morton
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