Commit 20e6c3db authored by Steve Wahl's avatar Steve Wahl Committed by Aichun Shi
Browse files

perf/x86/intel/uncore: With > 8 nodes, get pci bus die id from NUMA info

mainline inclusion
from mainline-v5.12-rc1
commit 9a7832ce
category: feature
feature: SPR PMU uncore support
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I5BECO



Intel-SIG: commit 9a7832ce perf/x86/intel/uncore: With > 8 nodes,
get pci bus die id from NUMA info
This commit is backported as a dependency for SPR PMU uncore support.

-------------------------------------

The registers used to determine which die a pci bus belongs to don't
contain enough information to uniquely specify more than 8 dies, so
when more than 8 dies are present, use NUMA information instead.

Continue to use the previous method for 8 or fewer because it
works there, and covers cases of NUMA being disabled.

Signed-off-by: default avatarSteve Wahl <steve.wahl@hpe.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarKan Liang <kan.liang@linux.intel.com>
Link: https://lkml.kernel.org/r/20210108153549.108989-3-steve.wahl@hpe.com


Signed-off-by: default avatarYunying Sun <yunying.sun@intel.com>
Signed-off-by: default avatarAichun Shi <aichun.shi@intel.com>
parent 09fe0c98
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