From 20c0ed5035fa81872a97c46d2d5beee5aab09800 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Mon, 15 Sep 2025 20:35:10 -0700 Subject: [PATCH] samples/damon/prcl: use damon_initialized() damon_sample_prcl 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/20250916033511.116366-7-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- samples/damon/prcl.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/samples/damon/prcl.c b/samples/damon/prcl.c index 0226652f94d5..b7c50f2656ce 100644 --- a/samples/damon/prcl.c +++ b/samples/damon/prcl.c @@ -122,8 +122,6 @@ static void damon_sample_prcl_stop(void) } } -static bool init_called; - static int damon_sample_prcl_enable_store( const char *val, const struct kernel_param *kp) { @@ -137,7 +135,7 @@ static int damon_sample_prcl_enable_store( if (enabled == is_enabled) return 0; - if (!init_called) + if (!damon_initialized()) return 0; if (enabled) { @@ -154,7 +152,12 @@ static int __init damon_sample_prcl_init(void) { int err = 0; - init_called = true; + if (!damon_initialized()) { + if (enabled) + enabled = false; + return -ENOMEM; + } + if (enabled) { err = damon_sample_prcl_start(); if (err) -- 2.47.3