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Diffstat (limited to 'mm/damon/sysfs.c')
-rw-r--r--mm/damon/sysfs.c54
1 files changed, 50 insertions, 4 deletions
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index 1f891e18b4ee..6fee383bc0c5 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -1020,6 +1020,11 @@ enum damon_sysfs_cmd {
*/
DAMON_SYSFS_CMD_CLEAR_SCHEMES_TRIED_REGIONS,
/*
+ * @DAMON_SYSFS_CMD_UPDATE_SCHEMES_EFFECTIVE_QUOTAS: Update the
+ * effective size quota of the scheme in bytes.
+ */
+ DAMON_SYSFS_CMD_UPDATE_SCHEMES_EFFECTIVE_QUOTAS,
+ /*
* @NR_DAMON_SYSFS_CMDS: Total number of DAMON sysfs commands.
*/
NR_DAMON_SYSFS_CMDS,
@@ -1035,6 +1040,7 @@ static const char * const damon_sysfs_cmd_strs[] = {
"update_schemes_tried_bytes",
"update_schemes_tried_regions",
"clear_schemes_tried_regions",
+ "update_schemes_effective_quotas",
};
/*
@@ -1371,19 +1377,43 @@ static int damon_sysfs_commit_schemes_quota_goals(
ctx = sysfs_kdamond->damon_ctx;
sysfs_ctx = sysfs_kdamond->contexts->contexts_arr[0];
- damos_sysfs_set_quota_scores(sysfs_ctx->schemes, ctx);
+ return damos_sysfs_set_quota_scores(sysfs_ctx->schemes, ctx);
+}
+
+/*
+ * damon_sysfs_upd_schemes_effective_quotas() - Update schemes effective quotas
+ * sysfs files.
+ * @kdamond: The kobject wrapper that associated to the kdamond thread.
+ *
+ * This function reads the schemes' effective quotas of specific kdamond and
+ * update the related values for sysfs files. This function should be called
+ * from DAMON callbacks while holding ``damon_syfs_lock``, to safely access the
+ * DAMON contexts-internal data and DAMON sysfs variables.
+ */
+static int damon_sysfs_upd_schemes_effective_quotas(
+ struct damon_sysfs_kdamond *kdamond)
+{
+ struct damon_ctx *ctx = kdamond->damon_ctx;
+
+ if (!ctx)
+ return -EINVAL;
+ damos_sysfs_update_effective_quotas(
+ kdamond->contexts->contexts_arr[0]->schemes, ctx);
return 0;
}
+
/*
* damon_sysfs_cmd_request_callback() - DAMON callback for handling requests.
* @c: The DAMON context of the callback.
* @active: Whether @c is not deactivated due to watermarks.
+ * @after_aggr: Whether this is called from after_aggregation() callback.
*
* This function is periodically called back from the kdamond thread for @c.
* Then, it checks if there is a waiting DAMON sysfs request and handles it.
*/
-static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active)
+static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active,
+ bool after_aggregation)
{
struct damon_sysfs_kdamond *kdamond;
bool total_bytes_only = false;
@@ -1401,6 +1431,8 @@ static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active)
err = damon_sysfs_upd_schemes_stats(kdamond);
break;
case DAMON_SYSFS_CMD_COMMIT:
+ if (!after_aggregation)
+ goto out;
err = damon_sysfs_commit_input(kdamond);
break;
case DAMON_SYSFS_CMD_COMMIT_SCHEMES_QUOTA_GOALS:
@@ -1418,6 +1450,7 @@ static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active)
goto keep_lock_out;
}
} else {
+ damos_sysfs_mark_finished_regions_updates(c);
/*
* Continue regions updating if DAMON is till
* active and the update for all schemes is not
@@ -1432,6 +1465,9 @@ static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active)
case DAMON_SYSFS_CMD_CLEAR_SCHEMES_TRIED_REGIONS:
err = damon_sysfs_clear_schemes_regions(kdamond);
break;
+ case DAMON_SYSFS_CMD_UPDATE_SCHEMES_EFFECTIVE_QUOTAS:
+ err = damon_sysfs_upd_schemes_effective_quotas(kdamond);
+ break;
default:
break;
}
@@ -1450,7 +1486,16 @@ static int damon_sysfs_after_wmarks_check(struct damon_ctx *c)
* after_wmarks_check() is called back while the context is deactivated
* by watermarks.
*/
- return damon_sysfs_cmd_request_callback(c, false);
+ return damon_sysfs_cmd_request_callback(c, false, false);
+}
+
+static int damon_sysfs_after_sampling(struct damon_ctx *c)
+{
+ /*
+ * after_sampling() is called back only while the context is not
+ * deactivated by watermarks.
+ */
+ return damon_sysfs_cmd_request_callback(c, true, false);
}
static int damon_sysfs_after_aggregation(struct damon_ctx *c)
@@ -1459,7 +1504,7 @@ static int damon_sysfs_after_aggregation(struct damon_ctx *c)
* after_aggregation() is called back only while the context is not
* deactivated by watermarks.
*/
- return damon_sysfs_cmd_request_callback(c, true);
+ return damon_sysfs_cmd_request_callback(c, true, true);
}
static struct damon_ctx *damon_sysfs_build_ctx(
@@ -1478,6 +1523,7 @@ static struct damon_ctx *damon_sysfs_build_ctx(
}
ctx->callback.after_wmarks_check = damon_sysfs_after_wmarks_check;
+ ctx->callback.after_sampling = damon_sysfs_after_sampling;
ctx->callback.after_aggregation = damon_sysfs_after_aggregation;
ctx->callback.before_terminate = damon_sysfs_before_terminate;
return ctx;