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selftests/resctrl: Fix non-contiguous CBM check for Hygon

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The resctrl selftest currently fails on Hygon CPUs that always supports
non-contiguous CBM, printing the error:

  "# Hardware and kernel differ on non-contiguous CBM support!"

This occurs because the arch_supports_noncont_cat() function lacks
vendor detection for Hygon CPUs, preventing proper identification of
their non-contiguous CBM capability.

Fix this by adding Hygon vendor ID detection to
arch_supports_noncont_cat().

Link: https://lore.kernel.org/r/20251217030456.3834956-5-shenxiaochen@open-hieco.net
Signed-off-by: Xiaochen Shen <shenxiaochen@open-hieco.net>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Fenghua Yu <fenghuay@nvidia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Xiaochen Shen 2025-12-17 11:04:56 +08:00 committed by Shuah Khan
parent 367f931e64
commit 86063a2568
1 changed files with 4 additions and 2 deletions
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6
tools/testing/selftests/resctrl/cat_test.c
View File

@ -290,8 +290,10 @@ static int cat_run_test(const struct resctrl_test *test, const struct user_param
static bool arch_supports_noncont_cat(const struct resctrl_test *test)
{
/* AMD always supports non-contiguous CBM. */
if (get_vendor() == ARCH_AMD)
unsigned int vendor_id = get_vendor();
/* AMD and Hygon always support non-contiguous CBM. */
if (vendor_id == ARCH_AMD || vendor_id == ARCH_HYGON)
return true;
#if defined(__i386__) || defined(__x86_64__) /* arch */