The quilt patch titled
Subject: mm/damon/sysfs: implement intervals tuning goal directory
has been removed from the -mm tree. Its filename was
mm-damon-sysfs-implement-intervals-tuning-goal-directory.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: SeongJae Park <sj@xxxxxxxxxx>
Subject: mm/damon/sysfs: implement intervals tuning goal directory
Date: Mon, 3 Mar 2025 14:17:21 -0800
Implement DAMON sysfs interface directory and its files for setting DAMON
sampling and aggregation intervals auto-tuning goal.
Link: https://lkml.kernel.org/r/20250303221726.484227-4-sj@xxxxxxxxxx
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/damon/sysfs.c | 189 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 189 insertions(+)
--- a/mm/damon/sysfs.c~mm-damon-sysfs-implement-intervals-tuning-goal-directory
+++ a/mm/damon/sysfs.c
@@ -409,6 +409,164 @@ static const struct kobj_type damon_sysf
};
/*
+ * intervals goal directory
+ */
+
+struct damon_sysfs_intervals_goal {
+ struct kobject kobj;
+ unsigned long access_bp;
+ unsigned long aggrs;
+ unsigned long min_sample_us;
+ unsigned long max_sample_us;
+};
+
+static struct damon_sysfs_intervals_goal *damon_sysfs_intervals_goal_alloc(
+ unsigned long access_bp, unsigned long aggrs,
+ unsigned long min_sample_us, unsigned long max_sample_us)
+{
+ struct damon_sysfs_intervals_goal *goal = kmalloc(sizeof(*goal),
+ GFP_KERNEL);
+
+ if (!goal)
+ return NULL;
+
+ goal->kobj = (struct kobject){};
+ goal->access_bp = access_bp;
+ goal->aggrs = aggrs;
+ goal->min_sample_us = min_sample_us;
+ goal->max_sample_us = max_sample_us;
+ return goal;
+}
+
+static ssize_t access_bp_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+
+ return sysfs_emit(buf, "%lu\n", goal->access_bp);
+}
+
+static ssize_t access_bp_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+ unsigned long nr;
+ int err = kstrtoul(buf, 0, &nr);
+
+ if (err)
+ return err;
+
+ goal->access_bp = nr;
+ return count;
+}
+
+static ssize_t aggrs_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+
+ return sysfs_emit(buf, "%lu\n", goal->aggrs);
+}
+
+static ssize_t aggrs_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+ unsigned long nr;
+ int err = kstrtoul(buf, 0, &nr);
+
+ if (err)
+ return err;
+
+ goal->aggrs = nr;
+ return count;
+}
+
+static ssize_t min_sample_us_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+
+ return sysfs_emit(buf, "%lu\n", goal->min_sample_us);
+}
+
+static ssize_t min_sample_us_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+ unsigned long nr;
+ int err = kstrtoul(buf, 0, &nr);
+
+ if (err)
+ return err;
+
+ goal->min_sample_us = nr;
+ return count;
+}
+
+static ssize_t max_sample_us_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+
+ return sysfs_emit(buf, "%lu\n", goal->max_sample_us);
+}
+
+static ssize_t max_sample_us_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ struct damon_sysfs_intervals_goal *goal = container_of(kobj,
+ struct damon_sysfs_intervals_goal, kobj);
+ unsigned long nr;
+ int err = kstrtoul(buf, 0, &nr);
+
+ if (err)
+ return err;
+
+ goal->max_sample_us = nr;
+ return count;
+}
+
+static void damon_sysfs_intervals_goal_release(struct kobject *kobj)
+{
+ kfree(container_of(kobj, struct damon_sysfs_intervals_goal, kobj));
+}
+
+static struct kobj_attribute damon_sysfs_intervals_goal_access_bp_attr =
+ __ATTR_RW_MODE(access_bp, 0600);
+
+static struct kobj_attribute damon_sysfs_intervals_goal_aggrs_attr =
+ __ATTR_RW_MODE(aggrs, 0600);
+
+static struct kobj_attribute damon_sysfs_intervals_goal_min_sample_us_attr =
+ __ATTR_RW_MODE(min_sample_us, 0600);
+
+static struct kobj_attribute damon_sysfs_intervals_goal_max_sample_us_attr =
+ __ATTR_RW_MODE(max_sample_us, 0600);
+
+static struct attribute *damon_sysfs_intervals_goal_attrs[] = {
+ &damon_sysfs_intervals_goal_access_bp_attr.attr,
+ &damon_sysfs_intervals_goal_aggrs_attr.attr,
+ &damon_sysfs_intervals_goal_min_sample_us_attr.attr,
+ &damon_sysfs_intervals_goal_max_sample_us_attr.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(damon_sysfs_intervals_goal);
+
+static const struct kobj_type damon_sysfs_intervals_goal_ktype = {
+ .release = damon_sysfs_intervals_goal_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+ .default_groups = damon_sysfs_intervals_goal_groups,
+};
+
+/*
* intervals directory
*/
@@ -417,6 +575,7 @@ struct damon_sysfs_intervals {
unsigned long sample_us;
unsigned long aggr_us;
unsigned long update_us;
+ struct damon_sysfs_intervals_goal *intervals_goal;
};
static struct damon_sysfs_intervals *damon_sysfs_intervals_alloc(
@@ -436,6 +595,32 @@ static struct damon_sysfs_intervals *dam
return intervals;
}
+static int damon_sysfs_intervals_add_dirs(struct damon_sysfs_intervals *intervals)
+{
+ struct damon_sysfs_intervals_goal *goal;
+ int err;
+
+ goal = damon_sysfs_intervals_goal_alloc(0, 0, 0, 0);
+ if (!goal)
+ return -ENOMEM;
+
+ err = kobject_init_and_add(&goal->kobj,
+ &damon_sysfs_intervals_goal_ktype, &intervals->kobj,
+ "intervals_goal");
+ if (err) {
+ kobject_put(&goal->kobj);
+ intervals->intervals_goal = NULL;
+ return err;
+ }
+ intervals->intervals_goal = goal;
+ return 0;
+}
+
+static void damon_sysfs_intervals_rm_dirs(struct damon_sysfs_intervals *intervals)
+{
+ kobject_put(&intervals->intervals_goal->kobj);
+}
+
static ssize_t sample_us_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@@ -571,6 +756,9 @@ static int damon_sysfs_attrs_add_dirs(st
"intervals");
if (err)
goto put_intervals_out;
+ err = damon_sysfs_intervals_add_dirs(intervals);
+ if (err)
+ goto put_intervals_out;
attrs->intervals = intervals;
nr_regions_range = damon_sysfs_ul_range_alloc(10, 1000);
@@ -599,6 +787,7 @@ put_intervals_out:
static void damon_sysfs_attrs_rm_dirs(struct damon_sysfs_attrs *attrs)
{
kobject_put(&attrs->nr_regions_range->kobj);
+ damon_sysfs_intervals_rm_dirs(attrs->intervals);
kobject_put(&attrs->intervals->kobj);
}
_
Patches currently in -mm which might be from sj@xxxxxxxxxx are
mm-damon-sysfs-schemes-let-damon_sysfs_scheme_set_filters-be-used-for-different-named-directories.patch
mm-damon-sysfs-schemes-implement-core_filters-and-ops_filters-directories.patch
mm-damon-sysfs-schemes-commit-filters-in-coreops_filters-directories.patch
mm-damon-core-expose-damos_filter_for_ops-to-damon-kernel-api-callers.patch
mm-damon-sysfs-schemes-record-filters-of-which-layer-should-be-added-to-the-given-filters-directory.patch
mm-damon-sysfs-schemes-return-error-when-for-attempts-to-install-filters-on-wrong-sysfs-directory.patch
docs-abi-damon-document-coreops_filters-directories.patch
docs-admin-guide-mm-damon-usage-update-for-coreops_filters-directories.patch
mm-damon-sysfs-validate-user-inputs-from-damon_sysfs_commit_input.patch
mm-damon-core-invoke-kdamond_call-after-merging-is-done-if-possible.patch
mm-damon-core-make-damon_set_attrs-be-safe-to-be-called-from-damon_call.patch
mm-damon-sysfs-handle-commit-command-using-damon_call.patch
mm-damon-sysfs-remove-damon_sysfs_cmd_request-code-from-damon_sysfs_handle_cmd.patch
mm-damon-sysfs-remove-damon_sysfs_cmd_request_callback-and-its-callers.patch
mm-damon-sysfs-remove-damon_sysfs_cmd_request-and-its-readers.patch
mm-damon-sysfs-schemes-remove-obsolete-comment-for-damon_sysfs_schemes_clear_regions.patch
mm-damon-remove-damon_callback-private.patch
mm-damon-remove-before_start-of-damon_callback.patch
mm-damon-remove-damon_callback-after_sampling.patch
mm-damon-remove-damon_callback-before_damos_apply.patch
mm-damon-remove-damon_operations-reset_aggregated.patch
mm-damon-sysfs-schemes-avoid-wformat-security-warning-on-damon_sysfs_access_pattern_add_range_dir.patch
mm-madvise-use-is_memory_failure-from-madvise_do_behavior.patch
mm-madvise-split-out-populate-behavior-check-logic.patch
mm-madvise-deduplicate-madvise_do_behavior-skip-case-handlings.patch
mm-madvise-remove-len-parameter-of-madvise_do_behavior.patch
