The patch titled
Subject: mm/damon/sysfs-schemes: support address range type DAMOS filter
has been added to the -mm mm-unstable branch. Its filename is
mm-damon-sysfs-schemes-support-address-range-type-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-address-range-type-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 address range type DAMOS filter
Date: Wed, 2 Aug 2023 21:43:01 +0000
Extend DAMON sysfs interface to support address range based DAMOS filters,
by adding a special keyword for the filter/<N>/type file, namely 'addr',
and two files under filter/<N>/ for specifying the start and the end
addresses of the range, namely 'addr_start' and 'addr_end'.
Link: https://lkml.kernel.org/r/20230802214312.110532-3-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 | 56 +++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
--- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-support-address-range-type-damos-filter
+++ a/mm/damon/sysfs-schemes.c
@@ -282,6 +282,7 @@ struct damon_sysfs_scheme_filter {
enum damos_filter_type type;
bool matching;
char *memcg_path;
+ struct damon_addr_range addr_range;
};
static struct damon_sysfs_scheme_filter *damon_sysfs_scheme_filter_alloc(void)
@@ -293,6 +294,7 @@ static struct damon_sysfs_scheme_filter
static const char * const damon_sysfs_scheme_filter_type_strs[] = {
"anon",
"memcg",
+ "addr",
};
static ssize_t type_show(struct kobject *kobj,
@@ -373,6 +375,44 @@ static ssize_t memcg_path_store(struct k
return count;
}
+static ssize_t addr_start_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, "%lu\n", filter->addr_range.start);
+}
+
+static ssize_t addr_start_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 = kstrtoul(buf, 0, &filter->addr_range.start);
+
+ return err ? err : count;
+}
+
+static ssize_t addr_end_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, "%lu\n", filter->addr_range.end);
+}
+
+static ssize_t addr_end_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 = kstrtoul(buf, 0, &filter->addr_range.end);
+
+ return err ? err : count;
+}
+
static void damon_sysfs_scheme_filter_release(struct kobject *kobj)
{
struct damon_sysfs_scheme_filter *filter = container_of(kobj,
@@ -391,10 +431,18 @@ static struct kobj_attribute damon_sysfs
static struct kobj_attribute damon_sysfs_scheme_filter_memcg_path_attr =
__ATTR_RW_MODE(memcg_path, 0600);
+static struct kobj_attribute damon_sysfs_scheme_filter_addr_start_attr =
+ __ATTR_RW_MODE(addr_start, 0600);
+
+static struct kobj_attribute damon_sysfs_scheme_filter_addr_end_attr =
+ __ATTR_RW_MODE(addr_end, 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,
NULL,
};
ATTRIBUTE_GROUPS(damon_sysfs_scheme_filter);
@@ -1484,7 +1532,15 @@ static int damon_sysfs_set_scheme_filter
damos_destroy_filter(filter);
return err;
}
+ } else if (filter->type == DAMOS_FILTER_TYPE_ADDR) {
+ if (sysfs_filter->addr_range.end <
+ sysfs_filter->addr_range.start) {
+ damos_destroy_filter(filter);
+ return -EINVAL;
+ }
+ filter->addr_range = sysfs_filter->addr_range;
}
+
damos_add_filter(scheme, filter);
}
return 0;
_
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
