github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-24 06:24:02 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mm/damon/core: ask apply_probes() ops callback to set sampling address

Browse Source 
prepare_access_checks() DAMON ops callback sets the monitoring sampling
address per region.  In future, DAMON will be able to call only
apply_probes().  In this case, applyy_probes() may need to do the sampling
address setup, to minimize unnecessary regions iteration.  Update the
protocol for the request.

Link: https://lore.kernel.org/20260710134651.18084-3-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SJ Park 2026-07-10 06:46:31 -07:00 committed by Andrew Morton
parent 37aae41c10
commit 1138ec78dc
3 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/damon.h
View File

@ -647,7 +647,8 @@ enum damon_ops_id {
* It should also return max number of observed accesses that made as a result
* of its update. The value will be used for regions adjustment threshold.
* @apply_probes should apply the data attribute probes to each region and
* accordingly update the probe hits counter of the region.
* accordingly update the probe hits counter of the region. It should also
* set &damon_region->sampling_addr of each region if ``set_samples`` is true.
* @get_scheme_score should return the priority score of a region for a scheme
* as an integer in [0, &DAMOS_MAX_SCORE].
* @apply_scheme is called from @kdamond when a region for user provided
@ -665,7 +666,7 @@ struct damon_operations {
void (*update)(struct damon_ctx *context);
void (*prepare_access_checks)(struct damon_ctx *context);
unsigned int (*check_accesses)(struct damon_ctx *context);
void (*apply_probes)(struct damon_ctx *context);
void (*apply_probes)(struct damon_ctx *context, bool set_samples);
int (*get_scheme_score)(struct damon_ctx *context,
struct damon_region *r, struct damos *scheme);
unsigned long (*apply_scheme)(struct damon_ctx *context,

2
mm/damon/core.c
View File

@ -3692,7 +3692,7 @@ static int kdamond_fn(void *data)
if (ctx->ops.check_accesses)
max_nr_accesses = ctx->ops.check_accesses(ctx);
if (ctx->ops.apply_probes)
ctx->ops.apply_probes(ctx);
ctx->ops.apply_probes(ctx, false);
if (time_after_eq(ctx->passed_sample_intervals,
next_aggregation_sis)) {

2
mm/damon/paddr.c
View File

@ -166,7 +166,7 @@ static bool damon_pa_filter_pass(phys_addr_t pa, struct folio *folio,
return pass;
}
static void damon_pa_apply_probes(struct damon_ctx *ctx)
static void damon_pa_apply_probes(struct damon_ctx *ctx, bool set_samples)
{
struct damon_target *t;
struct damon_region *r;