From: Changbin Du <changbin.du@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
SeongJae Park <sjpark@amazon.de>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Changbin Du <changbin.du@gmail.com>
Subject: [PATCH] mm/damon: needn't hold kdamond_lock to print pid of kdamond
Date: Tue, 28 Sep 2021 07:24:32 +0800 [thread overview]
Message-ID: <20210927232432.17750-1-changbin.du@gmail.com> (raw)
Just get the pid by 'current->pid'. Meanwhile, to be symmetrical make
the 'starts' and 'finishes' logs both info level.
Signed-off-by: Changbin Du <changbin.du@gmail.com>
---
mm/damon/core.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/mm/damon/core.c b/mm/damon/core.c
index bc5f74348649..3ef3e2bb091e 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -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_info("kdamond (%d) starts\n", ctx->kdamond->pid);
- mutex_unlock(&ctx->kdamond_lock);
+ pr_info("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_info("kdamond (%d) finishes\n", current->pid);
mutex_lock(&ctx->kdamond_lock);
ctx->kdamond = NULL;
mutex_unlock(&ctx->kdamond_lock);
--
2.25.1
reply other threads:[~2021-09-27 23:24 UTC|newest]
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