AcoSail/kernel_optimize_test
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292c34c102
kernel_optimize_test/tools
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Kan Liang 292c34c102 perf pmu: Fix core PMU alias list for X86 platform 
When counting uncore event with alias, core event is mistakenly
involved, for example:

  perf stat --no-merge -e "unc_m_cas_count.all" -C0  sleep 1

  Performance counter stats for 'CPU(s) 0':

                 0      unc_m_cas_count.all [uncore_imc_4]
                 0      unc_m_cas_count.all [uncore_imc_2]
                 0      unc_m_cas_count.all [uncore_imc_0]
           153,640      unc_m_cas_count.all [cpu]
                 0      unc_m_cas_count.all [uncore_imc_5]
            25,026      unc_m_cas_count.all [uncore_imc_3]
                 0      unc_m_cas_count.all [uncore_imc_1]

       1.001447890 seconds time elapsed

The reason is that current implementation doesn't check PMU name of a
event when adding its alias into the alias list for core PMU. The
uncore event aliases are mistakenly added.

This bug was introduced in:
  commit 14b22ae028 ("perf pmu: Add helper function is_pmu_core to
  detect PMU CORE devices")

Checking the PMU name for all PMUs on X86 and other architectures except
ARM.
There is no behavior change for ARM.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Agustin Vega-Frias <agustinv@codeaurora.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: 14b22ae028 ("perf pmu: Add helper function is_pmu_core to detect PMU CORE devices")
Link: http://lkml.kernel.org/r/1524594014-79243-1-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-04-24 16:02:29 -03:00
..
accounting
arch tools/headers: Synchronize kernel ABI headers, v4.17-rc1 2018-04-17 09:47:39 -03:00
bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-04-01 19:49:34 -04:00
build Kbuild: fix # escaping in .cmd files for future Make 2018-04-11 00:03:02 +09:00
cgroup
firewire
gpio
hv
iio
include coresight: Move to SPDX identifier 2018-04-19 12:29:41 -03:00
kvm/kvm_stat
laptop
leds
lib perf tools: Add '\n' at the end of parse-options error messages 2018-04-18 15:35:51 -03:00
memory-model
nfsd
objtool Kbuild: fix # escaping in .cmd files for future Make 2018-04-11 00:03:02 +09:00
pci
pcmcia
perf perf pmu: Fix core PMU alias list for X86 platform 2018-04-24 16:02:29 -03:00
power Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
scripts Kbuild: fix # escaping in .cmd files for future Make 2018-04-11 00:03:02 +09:00
spi
testing proc: fixup copyright sign 2018-04-12 20:52:25 -07:00
thermal/tmon
time
usb
virtio
vm
wmi
Makefile