From: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>
To: reinette.chatre@intel.com, shuah@kernel.org, fenghua.yu@intel.com
Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
ilpo.jarvinen@linux.intel.com
Subject: [PATCH v6 3/5] selftests/resctrl: Split validate_resctrl_feature_request()
Date: Fri, 16 Feb 2024 09:35:28 +0100 [thread overview]
Message-ID: <79e6f4b5bcaf36214289e56167fe1d5657cb4d24.1708072203.git.maciej.wieczor-retman@intel.com> (raw)
In-Reply-To: <cover.1708072203.git.maciej.wieczor-retman@intel.com>
validate_resctrl_feature_request() is used to test both if a resource is
present in the info directory, and if a passed monitoring feature is
present in the mon_features file.
Refactor validate_resctrl_feature_request() into two smaller functions
that each accomplish one check to give feature checking more
granularity:
- Resource directory presence in the /sys/fs/resctrl/info directory.
- Feature name presence in the /sys/fs/resctrl/info/<RESOURCE>/mon_features
file.
Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>
---
Changelog v6:
- Remove function header that sneaked into this patch from the next one
in the series.
- Add resource pointer check after adding it back as a function
argument.
Changelog v5:
- Move back to using resource parameter in mon_feature handling
function. (Ilpo)
Changelog v4:
- Roll back to using test_resource_feature_check() for CMT and MBA.
(Ilpo).
Changelog v3:
- Move new function to a separate patch. (Reinette)
- Rewrite resctrl_mon_feature_exists() only for L3_MON.
Changelog v2:
- Add this patch.
tools/testing/selftests/resctrl/cmt_test.c | 2 +-
tools/testing/selftests/resctrl/mba_test.c | 2 +-
tools/testing/selftests/resctrl/mbm_test.c | 6 ++--
tools/testing/selftests/resctrl/resctrl.h | 3 +-
tools/testing/selftests/resctrl/resctrlfs.c | 35 ++++++++++++++-------
5 files changed, 31 insertions(+), 17 deletions(-)
diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c
index dd5ca343c469..a81f91222a89 100644
--- a/tools/testing/selftests/resctrl/cmt_test.c
+++ b/tools/testing/selftests/resctrl/cmt_test.c
@@ -170,7 +170,7 @@ static int cmt_run_test(const struct resctrl_test *test, const struct user_param
static bool cmt_feature_check(const struct resctrl_test *test)
{
return test_resource_feature_check(test) &&
- validate_resctrl_feature_request("L3_MON", "llc_occupancy");
+ resctrl_mon_feature_exists("L3_MON", "llc_occupancy");
}
struct resctrl_test cmt_test = {
diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c
index da256d2dbe5c..7946e32e85c8 100644
--- a/tools/testing/selftests/resctrl/mba_test.c
+++ b/tools/testing/selftests/resctrl/mba_test.c
@@ -171,7 +171,7 @@ static int mba_run_test(const struct resctrl_test *test, const struct user_param
static bool mba_feature_check(const struct resctrl_test *test)
{
return test_resource_feature_check(test) &&
- validate_resctrl_feature_request("L3_MON", "mbm_local_bytes");
+ resctrl_mon_feature_exists("L3_MON", "mbm_local_bytes");
}
struct resctrl_test mba_test = {
diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c
index 34879e7b71a0..d67ffa3ec63a 100644
--- a/tools/testing/selftests/resctrl/mbm_test.c
+++ b/tools/testing/selftests/resctrl/mbm_test.c
@@ -97,7 +97,7 @@ static int mbm_setup(const struct resctrl_test *test,
return END_OF_TESTS;
/* Set up shemata with 100% allocation on the first run. */
- if (p->num_of_runs == 0 && validate_resctrl_feature_request("MB", NULL))
+ if (p->num_of_runs == 0 && resctrl_resource_exists("MB"))
ret = write_schemata(p->ctrlgrp, "100", uparams->cpu, test->resource);
p->num_of_runs++;
@@ -140,8 +140,8 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param
static bool mbm_feature_check(const struct resctrl_test *test)
{
- return validate_resctrl_feature_request("L3_MON", "mbm_total_bytes") &&
- validate_resctrl_feature_request("L3_MON", "mbm_local_bytes");
+ return resctrl_mon_feature_exists("L3_MON", "mbm_total_bytes") &&
+ resctrl_mon_feature_exists("L3_MON", "mbm_local_bytes");
}
struct resctrl_test mbm_test = {
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index 5116ea082d03..6d99ed44ec60 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -136,7 +136,8 @@ int get_domain_id(const char *resource, int cpu_no, int *domain_id);
int mount_resctrlfs(void);
int umount_resctrlfs(void);
int validate_bw_report_request(char *bw_report);
-bool validate_resctrl_feature_request(const char *resource, const char *feature);
+bool resctrl_resource_exists(const char *resource);
+bool resctrl_mon_feature_exists(const char *resource, const char *feature);
bool test_resource_feature_check(const struct resctrl_test *test);
char *fgrep(FILE *inf, const char *str);
int taskset_benchmark(pid_t bm_pid, int cpu_no, cpu_set_t *old_affinity);
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c
index 8a183c73bc23..1273e55c4a9d 100644
--- a/tools/testing/selftests/resctrl/resctrlfs.c
+++ b/tools/testing/selftests/resctrl/resctrlfs.c
@@ -708,20 +708,16 @@ char *fgrep(FILE *inf, const char *str)
}
/*
- * validate_resctrl_feature_request - Check if requested feature is valid.
- * @resource: Required resource (e.g., MB, L3, L2, L3_MON, etc.)
- * @feature: Required monitor feature (in mon_features file). Can only be
- * set for L3_MON. Must be NULL for all other resources.
+ * resctrl_resource_exists - Check if a resource is supported.
+ * @resource: Resctrl resource (e.g., MB, L3, L2, L3_MON, etc.)
*
- * Return: True if the resource/feature is supported, else false. False is
+ * Return: True if the resource is supported, else false. False is
* also returned if resctrl FS is not mounted.
*/
-bool validate_resctrl_feature_request(const char *resource, const char *feature)
+bool resctrl_resource_exists(const char *resource)
{
char res_path[PATH_MAX];
struct stat statbuf;
- char *res;
- FILE *inf;
int ret;
if (!resource)
@@ -736,8 +732,25 @@ bool validate_resctrl_feature_request(const char *resource, const char *feature)
if (stat(res_path, &statbuf))
return false;
- if (!feature)
- return true;
+ return true;
+}
+
+/*
+ * resctrl_mon_feature_exists - Check if requested monitoring feature is valid.
+ * @resource: Resource that uses the mon_features file. Currently only L3_MON
+ * is valid.
+ * @feature: Required monitor feature (in mon_features file).
+ *
+ * Return: True if the feature is supported, else false.
+ */
+bool resctrl_mon_feature_exists(const char *resource, const char *feature)
+{
+ char res_path[PATH_MAX];
+ char *res;
+ FILE *inf;
+
+ if (!feature || !resource)
+ return false;
snprintf(res_path, sizeof(res_path), "%s/%s/mon_features", INFO_PATH, resource);
inf = fopen(res_path, "r");
@@ -753,7 +766,7 @@ bool validate_resctrl_feature_request(const char *resource, const char *feature)
bool test_resource_feature_check(const struct resctrl_test *test)
{
- return validate_resctrl_feature_request(test->resource, NULL);
+ return resctrl_resource_exists(test->resource);
}
int filter_dmesg(void)
--
2.43.0
next prev parent reply other threads:[~2024-02-16 8:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-16 8:34 [PATCH v6 0/5] selftests/resctrl: Add non-contiguous CBMs in Intel CAT selftest Maciej Wieczor-Retman
2024-02-16 8:34 ` [PATCH v6 1/5] selftests/resctrl: Add test groups and name L3 CAT test L3_CAT Maciej Wieczor-Retman
2024-02-16 8:35 ` [PATCH v6 2/5] selftests/resctrl: Add a helper for the non-contiguous test Maciej Wieczor-Retman
2024-02-16 8:35 ` Maciej Wieczor-Retman [this message]
2024-02-16 11:21 ` [PATCH v6 3/5] selftests/resctrl: Split validate_resctrl_feature_request() Ilpo Järvinen
2024-02-20 20:51 ` Reinette Chatre
2024-02-16 8:35 ` [PATCH v6 4/5] selftests/resctrl: Add resource_info_file_exists() Maciej Wieczor-Retman
2024-02-20 20:52 ` Reinette Chatre
2024-02-16 8:35 ` [PATCH v6 5/5] selftests/resctrl: Add non-contiguous CBMs CAT test Maciej Wieczor-Retman
2024-02-16 11:22 ` Ilpo Järvinen
2024-02-22 17:05 ` [PATCH v6 0/5] selftests/resctrl: Add non-contiguous CBMs in Intel CAT selftest Reinette Chatre
2024-02-23 22:29 ` Shuah Khan
2024-02-23 22:33 ` Reinette Chatre
2024-02-23 22:37 ` Shuah Khan
2024-02-23 23:11 ` Reinette Chatre
2024-02-26 9:28 ` Maciej Wieczor-Retman
2024-02-28 0:08 ` Shuah Khan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=79e6f4b5bcaf36214289e56167fe1d5657cb4d24.1708072203.git.maciej.wieczor-retman@intel.com \
--to=maciej.wieczor-retman@intel.com \
--cc=fenghua.yu@intel.com \
--cc=ilpo.jarvinen@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=reinette.chatre@intel.com \
--cc=shuah@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).