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author | Taku Izumi <izumi.taku@jp.fujitsu.com> | 2015-09-24 12:10:21 (GMT) |
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committer | Ingo Molnar <mingo@kernel.org> | 2015-10-06 15:31:51 (GMT) |
commit | 712df65ccb63da08a484bf57c40b250dfd4103a7 (patch) | |
tree | a2ffd9107443af3bcfddcfcb20c0d0c91e51c840 /arch/s390/kernel | |
parent | 7ce1346a6842550a3c4c453cdf1c7b81fb60b07e (diff) | |
download | linux-712df65ccb63da08a484bf57c40b250dfd4103a7.tar.xz |
perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore
In multi-segment system, uncore devices may belong to buses whose segment
number is other than 0:
....
0000:ff:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03)
...
0001:7f:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03)
...
0001:bf:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03)
...
0001:ff:10.5 System peripheral: Intel Corporation Xeon E5 v3/Core i7 Scratchpad & Semaphore Registers (rev 03
...
In that case, relation of bus number and physical id may be broken
because "uncore_pcibus_to_physid" doesn't take account of PCI segment.
For example, bus 0000:ff and 0001:ff uses the same entry of
"uncore_pcibus_to_physid" array.
This patch fixes this problem by introducing the segment-aware pci2phy_map instead.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: acme@kernel.org
Cc: hpa@zytor.com
Link: http://lkml.kernel.org/r/1443096621-4119-1-git-send-email-izumi.taku@jp.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/s390/kernel')
0 files changed, 0 insertions, 0 deletions