linux-kernel - [PATCH v3 17/19] selftests/resctrl: Move CAT/CMT test global vars to function they are used in

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230605180145.112924-18-ilpo.jarvinen@linux.intel.com>
Date:   Mon,  5 Jun 2023 21:01:43 +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>,
        Shaopeng Tan <tan.shaopeng@...fujitsu.com>,
        Fenghua Yu <fenghua.yu@...el.com>, linux-kernel@...r.kernel.org
Cc:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH v3 17/19] selftests/resctrl: Move CAT/CMT test global vars to function they are used in

CAT and CMT tests have count_of_bits, long_mask, cbm_mask, and
cache_size global variables that can be moved into the sole using
function.

Make the global variables local variables of the relevant function to
scope them better.

While at it, move cache_size initialization into the declaration line.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 tools/testing/selftests/resctrl/cat_test.c | 11 ++++-------
 tools/testing/selftests/resctrl/cmt_test.c | 11 ++++-------
 2 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c
index 42e35269d8b6..ed6c8e64ad11 100644
--- a/tools/testing/selftests/resctrl/cat_test.c
+++ b/tools/testing/selftests/resctrl/cat_test.c
@@ -17,11 +17,6 @@
 #define MAX_DIFF_PERCENT	4
 #define MAX_DIFF		1000000
 
-static int count_of_bits;
-static char cbm_mask[256];
-static unsigned long long_mask;
-static unsigned long cache_size;
-
 /*
  * Change schemata. Write schemata to specified
  * con_mon grp, mon_grp in resctrl FS.
@@ -96,10 +91,12 @@ int cat_perf_miss_val(int cpu_no, int n, char *cache_type)
 {
 	unsigned long l_mask, l_mask_1;
 	int ret, pipefd[2], sibling_cpu_no;
+	unsigned long cache_size = 0;
+	unsigned long long_mask;
+	char cbm_mask[256];
+	int count_of_bits;
 	char pipe_message;
 
-	cache_size = 0;
-
 	/* Get default cbm mask for L3/L2 cache */
 	ret = get_cbm_mask(cache_type, cbm_mask);
 	if (ret)
diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c
index 7214aefb55ed..0ac9d6bbd13d 100644
--- a/tools/testing/selftests/resctrl/cmt_test.c
+++ b/tools/testing/selftests/resctrl/cmt_test.c
@@ -16,11 +16,6 @@
 #define MAX_DIFF		2000000
 #define MAX_DIFF_PERCENT	15
 
-static int count_of_bits;
-static char cbm_mask[256];
-static unsigned long long_mask;
-static unsigned long cache_size;
-
 static int cmt_setup(struct resctrl_val_param *p)
 {
 	/* Run NUM_OF_RUNS times */
@@ -75,10 +70,12 @@ void cmt_test_cleanup(void)
 
 int cmt_resctrl_val(int cpu_no, int n, char **benchmark_cmd)
 {
+	unsigned long cache_size = 0;
+	unsigned long long_mask;
+	char cbm_mask[256];
+	int count_of_bits;
 	int ret;
 
-	cache_size = 0;
-
 	if (!validate_resctrl_feature_request(CMT_STR))
 		return -1;
 
-- 
2.30.2