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samples/damon/prcl: use damon_call() repeat mode instead of damon_callback

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prcl uses damon_callback for periodically reading DAMON internal data. 
Use its alternative, damon_call() repeat mode.

Link: https://lkml.kernel.org/r/20250712195016.151108-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2025-07-12 12:50:08 -07:00 committed by Andrew Morton
parent 9cc8f00e52
commit a6c33f1054
1 changed files with 14 additions and 4 deletions
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18
samples/damon/prcl.c
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@ -34,8 +34,9 @@ MODULE_PARM_DESC(enabled, "Enable or disable DAMON_SAMPLE_PRCL");
static struct damon_ctx *ctx; static struct damon_ctx *ctx;
static struct pid *target_pidp; static struct pid *target_pidp;
static int damon_sample_prcl_after_aggregate(struct damon_ctx *c) static int damon_sample_prcl_repeat_call_fn(void *data)
{ {
struct damon_ctx *c = data;
struct damon_target *t; struct damon_target *t;
damon_for_each_target(t, c) { damon_for_each_target(t, c) {
@ -51,10 +52,16 @@ static int damon_sample_prcl_after_aggregate(struct damon_ctx *c)
return 0; return 0;
} }
static struct damon_call_control repeat_call_control = {
.fn = damon_sample_prcl_repeat_call_fn,
.repeat = true,
};
static int damon_sample_prcl_start(void) static int damon_sample_prcl_start(void)
{ {
struct damon_target *target; struct damon_target *target;
struct damos *scheme; struct damos *scheme;
int err;
pr_info("start\n"); pr_info("start\n");
@ -79,8 +86,6 @@ static int damon_sample_prcl_start(void)
} }
target->pid = target_pidp; target->pid = target_pidp;
ctx->callback.after_aggregation = damon_sample_prcl_after_aggregate;
scheme = damon_new_scheme( scheme = damon_new_scheme(
&(struct damos_access_pattern) { &(struct damos_access_pattern) {
.min_sz_region = PAGE_SIZE, .min_sz_region = PAGE_SIZE,
@ -100,7 +105,12 @@ static int damon_sample_prcl_start(void)
} }
damon_set_schemes(ctx, &scheme, 1); damon_set_schemes(ctx, &scheme, 1);
return damon_start(&ctx, 1, true); err = damon_start(&ctx, 1, true);
if (err)
return err;
repeat_call_control.data = ctx;
return damon_call(ctx, &repeat_call_control);
} }
static void damon_sample_prcl_stop(void) static void damon_sample_prcl_stop(void)