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

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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: Changbin Du <changbin.du@gmail.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

(cherry picked from commit 42e4cef5fe)

Bug: 228223814
Signed-off-by: Hailong Tu <tuhailong@oppo.com>
Change-Id: I6ea6f697795a43663f7c20e87c07cddae891a231
This commit is contained in:
Changbin Du 2021-11-05 13:46:12 -07:00 • committed by Hailong Tu
commit e0fad2fbbe
1 changed files with 2 additions and 4 deletions
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6
mm/damon/core.c
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@ -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);