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mm/damon/sysfs: deduplicate inputs applying 

DAMON sysfs interface's DAMON context building and its online parameter
update have duplicated code.  This commit removes the duplicate.

Link: https://lkml.kernel.org/r/20220606182310.48781-5-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2022-06-06 18:23:08 +00:00 committed by akpm
parent f25ab3bdfb
commit a79b68ee3e
1 changed files with 27 additions and 38 deletions
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65
mm/damon/sysfs.c
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@ -2357,25 +2357,10 @@ static inline bool damon_sysfs_kdamond_running(
damon_sysfs_ctx_running(kdamond->damon_ctx);
}
/*
* damon_sysfs_commit_input() - Commit user inputs to a running kdamond.
* @kdamond: The kobject wrapper for the associated kdamond.
*
* If the sysfs input is wrong, the kdamond will be terminated.
*/
static int damon_sysfs_commit_input(struct damon_sysfs_kdamond *kdamond)
static int damon_sysfs_apply_inputs(struct damon_ctx *ctx,
struct damon_sysfs_context *sys_ctx)
{
struct damon_ctx *ctx = kdamond->damon_ctx;
struct damon_sysfs_context *sys_ctx;
int err = 0;
if (!damon_sysfs_kdamond_running(kdamond))
return -EINVAL;
/* TODO: Support multiple contexts per kdamond */
if (kdamond->contexts->nr != 1)
return -EINVAL;
sys_ctx = kdamond->contexts->contexts_arr[0];
int err;
err = damon_select_ops(ctx, sys_ctx->ops_id);
if (err)
@ -2386,10 +2371,25 @@ static int damon_sysfs_commit_input(struct damon_sysfs_kdamond *kdamond)
err = damon_sysfs_set_targets(ctx, sys_ctx->targets);
if (err)
return err;
err = damon_sysfs_set_schemes(ctx, sys_ctx->schemes);
if (err)
return err;
return err;
return damon_sysfs_set_schemes(ctx, sys_ctx->schemes);
}
/*
* damon_sysfs_commit_input() - Commit user inputs to a running kdamond.
* @kdamond: The kobject wrapper for the associated kdamond.
*
* If the sysfs input is wrong, the kdamond will be terminated.
*/
static int damon_sysfs_commit_input(struct damon_sysfs_kdamond *kdamond)
{
if (!damon_sysfs_kdamond_running(kdamond))
return -EINVAL;
/* TODO: Support multiple contexts per kdamond */
if (kdamond->contexts->nr != 1)
return -EINVAL;
return damon_sysfs_apply_inputs(kdamond->damon_ctx,
kdamond->contexts->contexts_arr[0]);
}
/*
@ -2436,27 +2436,16 @@ static struct damon_ctx *damon_sysfs_build_ctx(
if (!ctx)
return ERR_PTR(-ENOMEM);
err = damon_select_ops(ctx, sys_ctx->ops_id);
if (err)
goto out;
err = damon_sysfs_set_attrs(ctx, sys_ctx->attrs);
if (err)
goto out;
err = damon_sysfs_set_targets(ctx, sys_ctx->targets);
if (err)
goto out;
err = damon_sysfs_set_schemes(ctx, sys_ctx->schemes);
if (err)
goto out;
err = damon_sysfs_apply_inputs(ctx, sys_ctx);
if (err) {
damon_destroy_ctx(ctx);
return ERR_PTR(err);
}
ctx->callback.after_wmarks_check = damon_sysfs_cmd_request_callback;
ctx->callback.after_aggregation = damon_sysfs_cmd_request_callback;
ctx->callback.before_terminate = damon_sysfs_before_terminate;
return ctx;
out:
damon_destroy_ctx(ctx);
return ERR_PTR(err);
}
static int damon_sysfs_turn_damon_on(struct damon_sysfs_kdamond *kdamond)