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| author | Reinette Chatre <[email protected]> | 2018-09-15 21:58:26 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2018-09-18 21:38:07 +0000 |
| commit | 939b90b20bc87e199b6b53942764b987289b87ce (patch) | |
| tree | 242d62ab5b702a031833569b9fb8af4f8dd878d6 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | x86/intel_rdt: Fix incorrect loop end condition (diff) | |
| download | kernel-939b90b20bc87e199b6b53942764b987289b87ce.tar.gz kernel-939b90b20bc87e199b6b53942764b987289b87ce.zip | |
x86/intel_rdt: Fix exclusive mode handling of MBA resource
It is possible for a resource group to consist out of MBA as well as
CAT/CDP resources. The "exclusive" resource mode only applies to the
CAT/CDP resources since MBA allocations cannot be specified to overlap
or not. When a user requests a resource group to become "exclusive" then it
can only be successful if there are CAT/CDP resources in the group
and none of their CBMs associated with the group's CLOSID overlaps with
any other resource group.
Fix the "exclusive" mode setting by failing if there isn't any CAT/CDP
resource in the group and ensuring that the CBM checking is only done on
CAT/CDP resources.
Fixes: 49f7b4efa ("x86/intel_rdt: Enable setting of exclusive mode")
Signed-off-by: Reinette Chatre <[email protected]>
Signed-off-by: Fenghua Yu <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: "H Peter Anvin" <[email protected]>
Cc: "Tony Luck" <[email protected]>
Cc: "Xiaochen Shen" <[email protected]>
Cc: "Chen Yu" <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions