| Message ID | 20210317022255.2536745-13-fenghua.yu@intel.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | Miscellaneous fixes for resctrl selftests | expand |
On 3/16/21 8:22 PM, Fenghua Yu wrote: > check_resctrlfs_support() does the following > 1. Checks if the platform supports resctrl file system or not by looking > for resctrl in /proc/filesystems > 2. Calls opendir() on default resctrl file system path > (i.e. /sys/fs/resctrl) > 3. Checks if resctrl file system is mounted or not by looking at > /proc/mounts > > Steps 2 and 3 will fail if the platform does not support resctrl file > system. So, there is no need to check for them if step 1 fails. > > Fix this by returning immediately if the platform does not support > resctrl file system. > > Tested-by: Babu Moger <babu.moger@amd.com> > Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> > --- > tools/testing/selftests/resctrl/resctrlfs.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c > index 6b22a186790a..87195eb78356 100644 > --- a/tools/testing/selftests/resctrl/resctrlfs.c > +++ b/tools/testing/selftests/resctrl/resctrlfs.c > @@ -570,6 +570,9 @@ bool check_resctrlfs_support(void) > ksft_print_msg("%s kernel supports resctrl filesystem\n", > ret ? "Pass:" : "Fail:"); > This message is a bit confusing. Please change this to read and send a follow-on patch on top of linux-kselftest next "Check kernel support for resctrl filesystem" thanks, -- Shuah
diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 6b22a186790a..87195eb78356 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -570,6 +570,9 @@ bool check_resctrlfs_support(void) ksft_print_msg("%s kernel supports resctrl filesystem\n", ret ? "Pass:" : "Fail:"); + if (!ret) + return ret; + dp = opendir(RESCTRL_PATH); ksft_print_msg("%s resctrl mountpoint \"%s\" exists\n", dp ? "Pass:" : "Fail:", RESCTRL_PATH);