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mm/damon: return void from damon_set_schemes()

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There is no point in returning an int from damon_set_schemes().  It always
returns 0 which is meaningless for the caller, so change it to return void
directly.

Link: https://lkml.kernel.org/r/1663341635-12675-1-git-send-email-kaixuxia@tencent.com
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kaixu Xia 2022-09-16 23:20:35 +08:00 • committed by Andrew Morton
parent 1ea41595f6
commit cc713520bd
5 changed files with 7 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/linux/damon.h
View file

@ -541,7 +541,7 @@ unsigned int damon_nr_regions(struct damon_target *t);
struct damon_ctx *damon_new_ctx(void);
void damon_destroy_ctx(struct damon_ctx *ctx);
int damon_set_attrs(struct damon_ctx *ctx, struct damon_attrs *attrs);
int damon_set_schemes(struct damon_ctx *ctx,
void damon_set_schemes(struct damon_ctx *ctx,
struct damos **schemes, ssize_t nr_schemes);
int damon_nr_running_ctxs(void);
bool damon_is_registered_ops(enum damon_ops_id id);

5
mm/damon/core.c
View file

@ -454,10 +454,8 @@ int damon_set_attrs(struct damon_ctx *ctx, struct damon_attrs *attrs)
*
* This function should not be called while the kdamond of the context is
* running.
*
* Return: 0 if success, or negative error code otherwise.
*/
int damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes,
void damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes,
ssize_t nr_schemes)
{
struct damos *s, *next;
@ -467,7 +465,6 @@ int damon_set_schemes(struct damon_ctx *ctx, struct damos **schemes,
damon_destroy_scheme(s);
for (i = 0; i < nr_schemes; i++)
damon_add_scheme(ctx, schemes[i]);
return 0;
}
/**

8
mm/damon/dbgfs.c
View file

@ -307,11 +307,9 @@ static ssize_t dbgfs_schemes_write(struct file *file, const char __user *buf,
goto unlock_out;
}
ret = damon_set_schemes(ctx, schemes, nr_schemes);
if (!ret) {
ret = count;
nr_schemes = 0;
}
damon_set_schemes(ctx, schemes, nr_schemes);
ret = count;
nr_schemes = 0;
unlock_out:
mutex_unlock(&ctx->kdamond_lock);

4
mm/damon/lru_sort.c
View file

@ -203,9 +203,7 @@ static int damon_lru_sort_apply_parameters(void)
scheme = damon_lru_sort_new_hot_scheme(hot_thres);
if (!scheme)
return -ENOMEM;
err = damon_set_schemes(ctx, &scheme, 1);
if (err)
return err;
damon_set_schemes(ctx, &scheme, 1);
cold_thres = cold_min_age / damon_lru_sort_mon_attrs.aggr_interval;
scheme = damon_lru_sort_new_cold_scheme(cold_thres);

4
mm/damon/reclaim.c
View file

@ -155,9 +155,7 @@ static int damon_reclaim_apply_parameters(void)
scheme = damon_reclaim_new_scheme();
if (!scheme)
return -ENOMEM;
err = damon_set_schemes(ctx, &scheme, 1);
if (err)
return err;
damon_set_schemes(ctx, &scheme, 1);
if (monitor_region_start > monitor_region_end)
return -EINVAL;