Commit 42e4cef5 authored by Changbin Du's avatar Changbin Du Committed by Linus Torvalds
Browse files

mm/damon: needn't hold kdamond_lock to print pid of kdamond 

Just get the pid by 'current->pid'.  Meanwhile, to be symmetrical make
the 'starts' and 'finishes' logs both use debug level.

Link: https://lkml.kernel.org/r/20210927232432.17750-1-changbin.du@gmail.com


Signed-off-by: default avatarChangbin Du <changbin.du@gmail.com>
Reviewed-by: default avatarSeongJae Park <sj@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5f7fe2b9

mm/damon/core.c

+2 −4
Original line number Diff line number Diff line
@@ -652,9 +652,7 @@ static int kdamond_fn(void *data) 
	unsigned int max_nr_accesses = 0;

	unsigned long sz_limit = 0;



	mutex_lock(&ctx->kdamond_lock);

	pr_debug("kdamond (%d) starts\n", ctx->kdamond->pid);

	mutex_unlock(&ctx->kdamond_lock);

	pr_debug("kdamond (%d) starts\n", current->pid);



	if (ctx->primitive.init)

		ctx->primitive.init(ctx);
@@ -705,7 +703,7 @@ static int kdamond_fn(void *data) 
	if (ctx->primitive.cleanup)

		ctx->primitive.cleanup(ctx);



	pr_debug("kdamond (%d) finishes\n", ctx->kdamond->pid);

	pr_debug("kdamond (%d) finishes\n", current->pid);

	mutex_lock(&ctx->kdamond_lock);

	ctx->kdamond = NULL;

	mutex_unlock(&ctx->kdamond_lock);