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Message-Id: <20231024092634.7122-21-ilpo.jarvinen@linux.intel.com>
Date: Tue, 24 Oct 2023 12:26:30 +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>,
Maciej Wieczór-Retman
<maciej.wieczor-retman@...el.com>,
Fenghua Yu <fenghua.yu@...el.com>
Cc: linux-kernel@...r.kernel.org,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 20/24] selftests/resctrl: Add helper to convert L2/3 to integer
"L2"/"L3" conversion to integer in embedded into get_cache_size()
which prevents reuse.
Create a helper for the cache string to integer conversion to make
it reusable.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
tools/testing/selftests/resctrl/resctrlfs.c | 28 +++++++++++++++------
1 file changed, 20 insertions(+), 8 deletions(-)
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c
index 7d72bea3ed58..b98d88f7cbc4 100644
--- a/tools/testing/selftests/resctrl/resctrlfs.c
+++ b/tools/testing/selftests/resctrl/resctrlfs.c
@@ -94,6 +94,23 @@ int umount_resctrlfs(void)
return 0;
}
+/*
+ * get_cache_level - Convert cache level from string to integer
+ * @cache_type: Cache level as string
+ *
+ * Return: cache level as integer or -1 if @cache_type is invalid.
+ */
+static int get_cache_level(const char *cache_type)
+{
+ if (!strcmp(cache_type, "L3"))
+ return 3;
+ if (!strcmp(cache_type, "L2"))
+ return 2;
+
+ perror("Invalid cache level");
+ return -1;
+}
+
/*
* get_resource_id - Get socket number/l3 id for a specified CPU
* @cpu_no: CPU number
@@ -144,14 +161,9 @@ int get_cache_size(int cpu_no, const char *cache_type, unsigned long *cache_size
int length, i, cache_num;
FILE *fp;
- if (!strcmp(cache_type, "L3")) {
- cache_num = 3;
- } else if (!strcmp(cache_type, "L2")) {
- cache_num = 2;
- } else {
- perror("Invalid cache level");
- return -1;
- }
+ cache_num = get_cache_level(cache_type);
+ if (cache_num < 0)
+ return cache_num;
sprintf(cache_path, "/sys/bus/cpu/devices/cpu%d/cache/index%d/size",
cpu_no, cache_num);
--
2.30.2
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