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b=fZQnASml0Lbv9oQ91AVKMKsLm51A6Ek6efXwaBqXBmtQP9KMVxl6V/FCJ/asSYFjZ V3gepos+fk3RlT5awLjHCbR1C/MTe8l4nhuS5x0gxzSwqXf+kZn6UhIyXY93jCfUIL /2rZwsxtO0FMLV0u4yUp8rbyZHgw2h6zNFJexIFZ4/KrCS+3zUf1IBb7HF/lunCFCX S3dFDvwc6ZRirLgKRBsCSSb4eU3oEGBgGSErNjYfflHCGSWn2JTjM/MoCUrjCuBJOC 6mvK1EbnaVDF/7Tr3J6u+ADUDn6D36lyTL1RxM3kuv9zbRv5geJ5NxE8zRuvsEY8PZ aN+PHK9TFxQGQ== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 15/27] mm/damon/sysfs: add filter_report_type file under probe filter directory Date: Sun, 15 Nov 2026 12:28:33 -0800 Message-ID: <20261115202849.99134-16-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261115202849.99134-1-sj@kernel.org> References: <20261115202849.99134-1-sj@kernel.org> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: qw3ey16ufqxhydtkns1zdp74it79dip8 X-Rspamd-Queue-Id: 5055020002 X-Rspam-User: X-Rspamd-Server: rspam08 X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-HE-Tag: 1794774548-193753 X-HE-Meta: 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 gHRAlsSW ZOWsWe/kvtXevHZhnU80HQrrffMVjdzU3IHLt5+nw+L3nnh9lxKIt0E0aTqkAyAOsMhaYemlAPGb7vhVg6PUr6zbZrGez9Vjtw59dHJF4pZruYbDzLrhubjauWADYj33cfbI3J3qXPH4Gqvsorqct54oqRGjG/uqfEBjW0x6TdASS0sapmj6neTLHc1twyHx5g6+Zm4I+CZ24x0mD90F6ulRfeKoLmzkgGuVNbH3tmulOJsNyqPqxpeWWeXM6TYzorQzjjkPeReRau+eyOV4aSGR1jQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Add a sysfs file, filter_report_type, under probe filter directory. It receives damon_report_type from the user. Reuse damon_sysfs_report_type_name struct for user keyword matching. Move the definition instead of forward declaration, as the code change is small enough at this stage. Signed-off-by: SJ Park --- mm/damon/sysfs.c | 61 +++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 52 insertions(+), 9 deletions(-) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 7cdbe2fedf7d8..ca971cf1dcf6d 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -977,6 +977,7 @@ struct damon_sysfs_filter { char *path; unsigned long range_min; unsigned long range_max; + enum damon_report_type report_type; }; static struct damon_sysfs_filter *damon_sysfs_filter_alloc(void) @@ -1175,6 +1176,53 @@ static ssize_t max_store(struct kobject *kobj, return err ? err : count; } +struct damon_sysfs_report_type_name { + enum damon_report_type type; + char *name; +}; + +static const struct damon_sysfs_report_type_name +damon_sysfs_report_type_names[] = { +}; + +static ssize_t filter_report_type_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_filter *filter = container_of(kobj, + struct damon_sysfs_filter, kobj); + int i; + + for (i = 0; i < ARRAY_SIZE(damon_sysfs_report_type_names); i++) { + const struct damon_sysfs_report_type_name *type_name; + + type_name = &damon_sysfs_report_type_names[i]; + if (type_name->type == filter->report_type) + return sysfs_emit(buf, "%s\n", type_name->name); + } + return -EINVAL; +} + +static ssize_t filter_report_type_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + struct damon_sysfs_filter *filter = container_of(kobj, + struct damon_sysfs_filter, kobj); + ssize_t ret = -EINVAL; + int i; + + for (i = 0; i < ARRAY_SIZE(damon_sysfs_report_type_names); i++) { + const struct damon_sysfs_report_type_name *type_name; + + type_name = &damon_sysfs_report_type_names[i]; + if (sysfs_streq(buf, type_name->name)) { + filter->report_type = type_name->type; + ret = count; + break; + } + } + return ret; +} + static void damon_sysfs_filter_release(struct kobject *kobj) { struct damon_sysfs_filter *filter = container_of(kobj, @@ -1202,6 +1250,9 @@ static struct kobj_attribute damon_sysfs_filter_min_attr = static struct kobj_attribute damon_sysfs_filter_max_attr = __ATTR_RW_MODE(max, 0600); +static struct kobj_attribute damon_sysfs_filter_filter_report_type_attr = + __ATTR_RW_MODE(filter_report_type, 0600); + static struct attribute *damon_sysfs_filter_attrs[] = { &damon_sysfs_filter_type_attr.attr, &damon_sysfs_filter_matching_attr.attr, @@ -1209,6 +1260,7 @@ static struct attribute *damon_sysfs_filter_attrs[] = { &damon_sysfs_filter_path_attr.attr, &damon_sysfs_filter_min_attr.attr, &damon_sysfs_filter_max_attr.attr, + &damon_sysfs_filter_filter_report_type_attr.attr, NULL, }; ATTRIBUTE_GROUPS(damon_sysfs_filter); @@ -2992,15 +3044,6 @@ static struct damon_sysfs_producer *damon_sysfs_producer_alloc(void) return kzalloc_obj(struct damon_sysfs_producer); } -struct damon_sysfs_report_type_name { - enum damon_report_type type; - char *name; -}; - -static const struct damon_sysfs_report_type_name -damon_sysfs_report_type_names[] = { -}; - static ssize_t report_type_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { -- 2.47.3