The patch titled
Subject: mm/damon/sysfs-schemes: support target damos filter
has been added to the -mm mm-unstable branch. Its filename is
mm-damon-sysfs-schemes-support-target-damos-filter.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-sysfs-schemes-support-target-damos-filter.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: SeongJae Park <sj@xxxxxxxxxx>
Subject: mm/damon/sysfs-schemes: support target damos filter
Date: Wed, 2 Aug 2023 21:43:08 +0000
Extend DAMON sysfs interface to support the DAMON monitoring target based
DAMOS filter. Users can use it via writing 'target' to the filter's
'type' file and specifying the index of the target from the corresponding
DAMON context's monitoring targets list to 'target_idx' sysfs file.
Link: https://lkml.kernel.org/r/20230802214312.110532-10-sj@xxxxxxxxxx
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Cc: Brendan Higgins <brendanhiggins@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/damon/sysfs-schemes.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
--- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-support-target-damos-filter
+++ a/mm/damon/sysfs-schemes.c
@@ -283,6 +283,7 @@ struct damon_sysfs_scheme_filter {
bool matching;
char *memcg_path;
struct damon_addr_range addr_range;
+ int target_idx;
};
static struct damon_sysfs_scheme_filter *damon_sysfs_scheme_filter_alloc(void)
@@ -295,6 +296,7 @@ static const char * const damon_sysfs_sc
"anon",
"memcg",
"addr",
+ "target",
};
static ssize_t type_show(struct kobject *kobj,
@@ -413,6 +415,25 @@ static ssize_t addr_end_store(struct kob
return err ? err : count;
}
+static ssize_t damon_target_idx_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ struct damon_sysfs_scheme_filter *filter = container_of(kobj,
+ struct damon_sysfs_scheme_filter, kobj);
+
+ return sysfs_emit(buf, "%d\n", filter->target_idx);
+}
+
+static ssize_t damon_target_idx_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf, size_t count)
+{
+ struct damon_sysfs_scheme_filter *filter = container_of(kobj,
+ struct damon_sysfs_scheme_filter, kobj);
+ int err = kstrtoint(buf, 0, &filter->target_idx);
+
+ return err ? err : count;
+}
+
static void damon_sysfs_scheme_filter_release(struct kobject *kobj)
{
struct damon_sysfs_scheme_filter *filter = container_of(kobj,
@@ -437,12 +458,16 @@ static struct kobj_attribute damon_sysfs
static struct kobj_attribute damon_sysfs_scheme_filter_addr_end_attr =
__ATTR_RW_MODE(addr_end, 0600);
+static struct kobj_attribute damon_sysfs_scheme_filter_damon_target_idx_attr =
+ __ATTR_RW_MODE(damon_target_idx, 0600);
+
static struct attribute *damon_sysfs_scheme_filter_attrs[] = {
&damon_sysfs_scheme_filter_type_attr.attr,
&damon_sysfs_scheme_filter_matching_attr.attr,
&damon_sysfs_scheme_filter_memcg_path_attr.attr,
&damon_sysfs_scheme_filter_addr_start_attr.attr,
&damon_sysfs_scheme_filter_addr_end_attr.attr,
+ &damon_sysfs_scheme_filter_damon_target_idx_attr.attr,
NULL,
};
ATTRIBUTE_GROUPS(damon_sysfs_scheme_filter);
@@ -1539,6 +1564,8 @@ static int damon_sysfs_set_scheme_filter
return -EINVAL;
}
filter->addr_range = sysfs_filter->addr_range;
+ } else if (filter->type == DAMOS_FILTER_TYPE_TARGET) {
+ filter->target_idx = sysfs_filter->target_idx;
}
damos_add_filter(scheme, filter);
_
Patches currently in -mm which might be from sj@xxxxxxxxxx are
mm-damon-core-initialize-damo_filter-list-from-damos_new_filter.patch
mm-damon-core-test-add-a-test-for-damos_new_filter.patch
mm-damon-sysfs-schemes-implement-damos-tried-total-bytes-file.patch
mm-damon-sysfs-implement-a-command-for-updating-only-schemes-tried-total-bytes.patch
selftests-damon-sysfs-test-tried_regions-total_bytes-file.patch
docs-abi-damon-update-for-tried_regions-total_bytes.patch
docs-admin-guide-mm-damon-usage-update-for-tried_regions-total_bytes.patch
mm-damon-core-introduce-address-range-type-damos-filter.patch
mm-damon-sysfs-schemes-support-address-range-type-damos-filter.patch
mm-damon-core-test-add-a-unit-test-for-__damos_filter_out.patch
selftests-damon-sysfs-test-address-range-damos-filter.patch
docs-mm-damon-design-update-for-address-range-filters.patch
docs-abi-damon-update-for-address-range-damos-filter.patch
docs-admin-guide-mm-damon-usage-update-for-address-range-type-damos-filter.patch
mm-damon-core-implement-target-type-damos-filter.patch
mm-damon-sysfs-schemes-support-target-damos-filter.patch
selftests-damon-sysfs-test-damon_target-filter.patch
docs-mm-damon-design-update-for-damon-monitoring-target-type-damos-filter.patch
docs-abi-damon-update-for-damon-monitoring-target-type-damos-filter.patch
docs-admin-guide-mm-damon-usage-update-for-damon-monitoring-target-type-damos-filter.patch
