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Message-Id: <20240520123020.18938-17-ilpo.jarvinen@linux.intel.com>
Date: Mon, 20 May 2024 15:30:20 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: linux-kselftest@...r.kernel.org,
Reinette Chatre <reinette.chatre@...el.com>,
Shuah Khan <shuah@...nel.org>,
Babu Moger <babu.moger@....com>,
Maciej Wieczór-Retman <maciej.wieczor-retman@...el.com>
Cc: linux-kernel@...r.kernel.org,
Fenghua Yu <fenghua.yu@...el.com>,
Shuah Khan <skhan@...uxfoundation.org>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH v4 16/16] selftests/resctrl: Remove test name comparing from write_bm_pid_to_resctrl()
write_bm_pid_to_resctrl() uses resctrl_val to check test name which is
not a good interface generic resctrl FS functions should provide.
Only MBM and CMT tests define mongrp so the test name check in
write_bm_pid_to_resctrl() can be changed to depend simply on mongrp
being non-NULL.
With last user of resctrl_val gone, the parameter and member from the
struct resctrl_val_param can removed. Test name constants can also be
removed because they are not used anymore.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
tools/testing/selftests/resctrl/cat_test.c | 5 +--
tools/testing/selftests/resctrl/cmt_test.c | 1 -
tools/testing/selftests/resctrl/mba_test.c | 1 -
tools/testing/selftests/resctrl/mbm_test.c | 1 -
tools/testing/selftests/resctrl/resctrl.h | 10 +-----
tools/testing/selftests/resctrl/resctrl_val.c | 4 +--
tools/testing/selftests/resctrl/resctrlfs.c | 33 ++++++++-----------
7 files changed, 17 insertions(+), 38 deletions(-)
diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c
index c7686fb6641a..d4dffc934bc3 100644
--- a/tools/testing/selftests/resctrl/cat_test.c
+++ b/tools/testing/selftests/resctrl/cat_test.c
@@ -158,7 +158,6 @@ static int cat_test(const struct resctrl_test *test,
struct resctrl_val_param *param,
size_t span, unsigned long current_mask)
{
- char *resctrl_val = param->resctrl_val;
struct perf_event_read pe_read;
struct perf_event_attr pea;
cpu_set_t old_affinity;
@@ -178,8 +177,7 @@ static int cat_test(const struct resctrl_test *test,
return ret;
/* Write benchmark to specified con_mon grp, mon_grp in resctrl FS*/
- ret = write_bm_pid_to_resctrl(bm_pid, param->ctrlgrp, param->mongrp,
- resctrl_val);
+ ret = write_bm_pid_to_resctrl(bm_pid, param->ctrlgrp, param->mongrp);
if (ret)
goto reset_affinity;
@@ -272,7 +270,6 @@ static int cat_run_test(const struct resctrl_test *test, const struct user_param
start_mask = create_bit_mask(start, n);
struct resctrl_val_param param = {
- .resctrl_val = CAT_STR,
.ctrlgrp = "c1",
.filename = RESULT_FILE_NAME,
.num_of_runs = 0,
diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c
index b63fa1e93307..d1c272743eb2 100644
--- a/tools/testing/selftests/resctrl/cmt_test.c
+++ b/tools/testing/selftests/resctrl/cmt_test.c
@@ -144,7 +144,6 @@ static int cmt_run_test(const struct resctrl_test *test, const struct user_param
}
struct resctrl_val_param param = {
- .resctrl_val = CMT_STR,
.ctrlgrp = "c1",
.filename = RESULT_FILE_NAME,
.mask = ~(long_mask << n) & long_mask,
diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c
index 5e0b1e794295..1f2a7dc73b62 100644
--- a/tools/testing/selftests/resctrl/mba_test.c
+++ b/tools/testing/selftests/resctrl/mba_test.c
@@ -164,7 +164,6 @@ static void mba_test_cleanup(void)
static int mba_run_test(const struct resctrl_test *test, const struct user_params *uparams)
{
struct resctrl_val_param param = {
- .resctrl_val = MBA_STR,
.ctrlgrp = "c1",
.filename = RESULT_FILE_NAME,
.init = mba_init,
diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c
index 27b936fe60bc..39aa70374154 100644
--- a/tools/testing/selftests/resctrl/mbm_test.c
+++ b/tools/testing/selftests/resctrl/mbm_test.c
@@ -132,7 +132,6 @@ static void mbm_test_cleanup(void)
static int mbm_run_test(const struct resctrl_test *test, const struct user_params *uparams)
{
struct resctrl_val_param param = {
- .resctrl_val = MBM_STR,
.ctrlgrp = "c1",
.filename = RESULT_FILE_NAME,
.init = mbm_init,
diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index a999fbc13fd3..2dda56084588 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -81,7 +81,6 @@ struct resctrl_test {
/*
* resctrl_val_param: resctrl test parameters
- * @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc)
* @ctrlgrp: Name of the control monitor group (con_mon grp)
* @mongrp: Name of the monitor group (mon grp)
* @filename: Name of file to which the o/p should be written
@@ -90,7 +89,6 @@ struct resctrl_test {
* @measure: Callback that performs the measurement (a single test)
*/
struct resctrl_val_param {
- char *resctrl_val;
const char *ctrlgrp;
const char *mongrp;
char filename[64];
@@ -113,11 +111,6 @@ struct perf_event_read {
} values[2];
};
-#define MBM_STR "mbm"
-#define MBA_STR "mba"
-#define CMT_STR "cmt"
-#define CAT_STR "cat"
-
/*
* Memory location that consumes values compiler must not optimize away.
* Volatile ensures writes to this location cannot be optimized away by
@@ -143,8 +136,7 @@ int taskset_benchmark(pid_t bm_pid, int cpu_no, cpu_set_t *old_affinity);
int taskset_restore(pid_t bm_pid, cpu_set_t *old_affinity);
int write_schemata(const char *ctrlgrp, char *schemata, int cpu_no,
const char *resource);
-int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp,
- const char *mongrp, const char *resctrl_val);
+int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp, const char *mongrp);
int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu,
int group_fd, unsigned long flags);
unsigned char *alloc_buffer(size_t buf_size, int memflush);
diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c
index b2b944a70fb9..719a08ece9d3 100644
--- a/tools/testing/selftests/resctrl/resctrl_val.c
+++ b/tools/testing/selftests/resctrl/resctrl_val.c
@@ -695,7 +695,6 @@ int resctrl_val(const struct resctrl_test *test,
const char * const *benchmark_cmd,
struct resctrl_val_param *param)
{
- char *resctrl_val = param->resctrl_val;
struct sigaction sigact;
int ret = 0, pipefd[2];
char pipe_message = 0;
@@ -786,8 +785,7 @@ int resctrl_val(const struct resctrl_test *test,
goto out;
/* Write benchmark to specified control&monitoring grp in resctrl FS */
- ret = write_bm_pid_to_resctrl(bm_pid, param->ctrlgrp, param->mongrp,
- resctrl_val);
+ ret = write_bm_pid_to_resctrl(bm_pid, param->ctrlgrp, param->mongrp);
if (ret)
goto out;
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c
index 6b4448588666..4bf1fe6dc308 100644
--- a/tools/testing/selftests/resctrl/resctrlfs.c
+++ b/tools/testing/selftests/resctrl/resctrlfs.c
@@ -519,7 +519,6 @@ static int write_pid_to_tasks(char *tasks, pid_t pid)
* @bm_pid: PID that should be written
* @ctrlgrp: Name of the control monitor group (con_mon grp)
* @mongrp: Name of the monitor group (mon grp)
- * @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc)
*
* If a con_mon grp is requested, create it and write pid to it, otherwise
* write pid to root con_mon grp.
@@ -529,8 +528,7 @@ static int write_pid_to_tasks(char *tasks, pid_t pid)
*
* Return: 0 on success, < 0 on error.
*/
-int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp,
- const char *mongrp, const char *resctrl_val)
+int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp, const char *mongrp)
{
char controlgroup[128], monitorgroup[512], monitorgroup_p[256];
char tasks[1024];
@@ -550,22 +548,19 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp,
if (ret)
goto out;
- /* Create mon grp and write pid into it for "mbm" and "cmt" test */
- if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR)) ||
- !strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR))) {
- if (mongrp) {
- sprintf(monitorgroup_p, "%s/mon_groups", controlgroup);
- sprintf(monitorgroup, "%s/%s", monitorgroup_p, mongrp);
- ret = create_grp(mongrp, monitorgroup, monitorgroup_p);
- if (ret)
- goto out;
-
- sprintf(tasks, "%s/mon_groups/%s/tasks",
- controlgroup, mongrp);
- ret = write_pid_to_tasks(tasks, bm_pid);
- if (ret)
- goto out;
- }
+ /* Create monitor group and write pid into if it is used */
+ if (mongrp) {
+ sprintf(monitorgroup_p, "%s/mon_groups", controlgroup);
+ sprintf(monitorgroup, "%s/%s", monitorgroup_p, mongrp);
+ ret = create_grp(mongrp, monitorgroup, monitorgroup_p);
+ if (ret)
+ goto out;
+
+ sprintf(tasks, "%s/mon_groups/%s/tasks",
+ controlgroup, mongrp);
+ ret = write_pid_to_tasks(tasks, bm_pid);
+ if (ret)
+ goto out;
}
out:
--
2.39.2
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