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| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-12-15 17:05:02 +0200 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2024-02-13 13:56:44 -0700 |
| commit | 038ce802e248a985150156da84bc3f118236b898 (patch) | |
| tree | 8e69b70a6825521285d83d29b8ef6ba43846c024 /tools | |
| parent | b6e6a582f2b357b6f74849b715de12cc38b1ee91 (diff) | |
| download | linux-stable-038ce802e248a985150156da84bc3f118236b898.tar.gz linux-stable-038ce802e248a985150156da84bc3f118236b898.tar.bz2 linux-stable-038ce802e248a985150156da84bc3f118236b898.zip | |
selftests/resctrl: Improve perf init
struct perf_event_attr initialization is spread into
perf_event_initialize() and perf_event_attr_initialize() and setting
->config is hardcoded by the deepest level.
perf_event_attr init belongs to perf_event_attr_initialize() so move it
entirely there. Rename the other function
perf_event_initialized_read_format().
Call each init function directly from the test as they will take
different parameters (especially true after the perf related global
variables are moved to local variables).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/resctrl/cache.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 7f45c4957f81..58ee6f6b0edf 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -15,8 +15,9 @@ static struct perf_event_read pe_read; static int pe_fd; char llc_occup_path[1024]; -static void perf_event_attr_initialize(void) +static void perf_event_attr_initialize(__u64 config) { + memset(&pea_llc_miss, 0, sizeof(struct perf_event_attr)); pea_llc_miss.type = PERF_TYPE_HARDWARE; pea_llc_miss.size = sizeof(struct perf_event_attr); pea_llc_miss.read_format = PERF_FORMAT_GROUP; @@ -27,6 +28,7 @@ static void perf_event_attr_initialize(void) pea_llc_miss.inherit = 1; pea_llc_miss.exclude_guest = 1; pea_llc_miss.disabled = 1; + pea_llc_miss.config = config; } /* Start counters to log values */ @@ -36,16 +38,9 @@ static void perf_event_reset_enable(void) ioctl(pe_fd, PERF_EVENT_IOC_ENABLE, 0); } -static void perf_event_initialize(void) +static void perf_event_initialize_read_format(void) { - memset(&pea_llc_miss, 0, sizeof(struct perf_event_attr)); memset(&pe_read, 0, sizeof(struct perf_event_read)); - - /* Initialize perf_event_attr structures for HW_CACHE_MISSES */ - perf_event_attr_initialize(); - - pea_llc_miss.config = PERF_COUNT_HW_CACHE_MISSES; - pe_read.nr = 1; } @@ -204,7 +199,8 @@ int cat_val(struct resctrl_val_param *param, size_t span) if (ret) return ret; - perf_event_initialize(); + perf_event_attr_initialize(PERF_COUNT_HW_CACHE_MISSES); + perf_event_initialize_read_format(); /* Test runs until the callback setup() tells the test to stop. */ while (1) { |