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samples/damon/mtier: use damon_initialized() 

damon_sample_mtier is assuming DAMON is ready to use in module_init time,
and uses its own hack to see if it is the time.  Use damon_initialized(),
which is a way for seeing if DAMON is ready to be used that is more
reliable and better to maintain instead of the hack.

Link: https://lkml.kernel.org/r/20250916033511.116366-8-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 2025-09-15 20:35:11 -07:00 committed by Andrew Morton
parent 20c0ed5035
commit d93871f473
1 changed files with 7 additions and 4 deletions
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11
samples/damon/mtier.c
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@ -193,8 +193,6 @@ static void damon_sample_mtier_stop(void)
damon_destroy_ctx(ctxs[1]); damon_destroy_ctx(ctxs[1]);
} }
static bool init_called;
static int damon_sample_mtier_enable_store( static int damon_sample_mtier_enable_store(
const char *val, const struct kernel_param *kp) const char *val, const struct kernel_param *kp)
{ {
@ -208,7 +206,7 @@ static int damon_sample_mtier_enable_store(
if (enabled == is_enabled) if (enabled == is_enabled)
return 0; return 0;
if (!init_called) if (!damon_initialized())
return 0; return 0;
if (enabled) { if (enabled) {
@ -225,7 +223,12 @@ static int __init damon_sample_mtier_init(void)
{ {
int err = 0; int err = 0;
init_called = true; if (!damon_initialized()) {
if (enabled)
enabled = false;
return -ENOMEM;
}
if (enabled) { if (enabled) {
err = damon_sample_mtier_start(); err = damon_sample_mtier_start();
if (err) if (err)