diff options
| author | Reinette Chatre <reinette.chatre@intel.com> | 2021-03-17 02:22:39 +0000 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2021-04-02 13:51:43 -0600 |
| commit | f5f16ae4fae9d4d51aa365a0e1d84d368bef53ea (patch) | |
| tree | 10b25c87595aa3bde93fb2567328a96351032d90 /tools/testing/selftests/resctrl | |
| parent | 2428673638ea28fa93d2a38b1c3e8d70122b00ee (diff) | |
selftests/resctrl: Ensure sibling CPU is not same as original CPU
The resctrl tests can accept a CPU on which the tests are run and use
default of CPU #1 if it is not provided. In the CAT test a "sibling CPU"
is determined that is from the same package where another thread will be
run.
The current algorithm with which a "sibling CPU" is determined does not
take the provided/default CPU into account and when that CPU is the
first CPU in a package then the "sibling CPU" will be selected to be the
same CPU since it starts by picking the first CPU from core_siblings_list.
Fix the "sibling CPU" selection by taking the provided/default CPU into
account and ensuring a sibling that is a different CPU is selected.
Tested-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/resctrl')
| -rw-r--r-- | tools/testing/selftests/resctrl/resctrlfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 4174e48e06d1..bc52076bee7f 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -268,7 +268,7 @@ int get_core_sibling(int cpu_no) while (token) { sibling_cpu_no = atoi(token); /* Skipping core 0 as we don't want to run test on core 0 */ - if (sibling_cpu_no != 0) + if (sibling_cpu_no != 0 && sibling_cpu_no != cpu_no) break; token = strtok(NULL, "-,"); } |