diff mbox series

[V2] mm/damon: simplify damon_ctx check in damon_sysfs_before_terminate

Message ID 20220908021912.70481-1-xhao@linux.alibaba.com (mailing list archive)
State New
Headers show
Series [V2] mm/damon: simplify damon_ctx check in damon_sysfs_before_terminate | expand

Commit Message

haoxin Sept. 8, 2022, 2:19 a.m. UTC
In damon_sysfs_before_terminate() func, it need to check whether
ctx->ops.id supports 'DAMON_OPS_VADDR' or 'DAMON_OPS_FVADDR', there we
can use damon_target_has_pid() instead.

Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--
2.31.0

Comments

SeongJae Park Sept. 8, 2022, 6:01 p.m. UTC | #1
Just for a record.  Apparently Andrew has already added this in mm:
https://lore.kernel.org/mm-commits/20220907223146.C7CF4C433D6@smtp.kernel.org/


Thanks,
SJ

On Thu, 8 Sep 2022 10:19:12 +0800 Xin Hao <xhao@linux.alibaba.com> wrote:

> In damon_sysfs_before_terminate() func, it need to check whether
> ctx->ops.id supports 'DAMON_OPS_VADDR' or 'DAMON_OPS_FVADDR', there we
> can use damon_target_has_pid() instead.
> 
> Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
> Reviewed-by: SeongJae Park <sj@kernel.org>
> ---
>  mm/damon/sysfs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
> index 7488e27c87c3..88f208ff235d 100644
> --- a/mm/damon/sysfs.c
> +++ b/mm/damon/sysfs.c
> @@ -2309,7 +2309,7 @@ static void damon_sysfs_before_terminate(struct damon_ctx *ctx)
>  {
>  	struct damon_target *t, *next;
> 
> -	if (ctx->ops.id != DAMON_OPS_VADDR && ctx->ops.id != DAMON_OPS_FVADDR)
> +	if (!damon_target_has_pid(ctx))
>  		return;
> 
>  	mutex_lock(&ctx->kdamond_lock);
> --
> 2.31.0
diff mbox series

Patch

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index 7488e27c87c3..88f208ff235d 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -2309,7 +2309,7 @@  static void damon_sysfs_before_terminate(struct damon_ctx *ctx)
 {
 	struct damon_target *t, *next;

-	if (ctx->ops.id != DAMON_OPS_VADDR && ctx->ops.id != DAMON_OPS_FVADDR)
+	if (!damon_target_has_pid(ctx))
 		return;

 	mutex_lock(&ctx->kdamond_lock);