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linux/arch/powerpc/perf
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Christophe Leroy cd99ddbea2 powerpc/8xx: Only perform perf counting when perf is in use. 
In TLB miss handlers, updating the perf counter is only useful
when performing a perf analysis. As it has a noticeable overhead,
let's only do it when needed.

In order to do so, the exit of the miss handlers will be patched
when starting/stopping 'perf': the first register restore
instruction of each exit point will be replaced by a jump to
the counting code.

Once this is done, CONFIG_PPC_8xx_PERF_EVENT becomes useless as
this feature doesn't add any overhead.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-16 23:47:12 +11:00
..
req-gen License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
8xx-pmu.c powerpc/8xx: Only perform perf counting when perf is in use. 2018-01-16 23:47:12 +11:00
bhrb.S powerpc/perf: Add basic assembly code to read BHRB entries on POWER8 2013-04-26 16:11:11 +10:00
callchain.c powerpc/mm: Rename find_linux_pte_or_hugepte() 2017-08-17 23:13:46 +10:00
core-book3s.c powerpc/sysrq: Fix oops whem ppmu is not registered 2017-09-20 13:30:09 +10:00
core-fsl-emb.c perf/powerpc: reset event hw state when adding it to the PMU 2015-01-29 23:44:18 -06:00
e500-pmu.c powerpc/perf: Add stalled-cycles events 2013-01-10 17:00:56 +11:00
e6500-pmu.c powerpc/perf: Add e6500 PMU driver 2013-08-07 18:38:04 -05:00
hv-24x7-catalog.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-24x7-domains.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-24x7.c powerpc/perf/hv-24x7: Fix incorrect comparison in memord 2017-10-22 12:08:31 +02:00
hv-24x7.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-common.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-gpci-requests.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hv-gpci.c powerpc/sparse: Make a bunch of things static 2016-09-13 17:35:47 +10:00
hv-gpci.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
imc-pmu.c powerpc/perf: Fix IMC_MAX_PMU macro 2017-11-22 23:04:23 +11:00
isa207-common.c powerpc/perf: Factor out PPMU_ONLY_COUNT_RUN check code from power8 2017-08-10 22:30:05 +10:00
isa207-common.h powerpc/perf: Factor out PPMU_ONLY_COUNT_RUN check code from power8 2017-08-10 22:30:05 +10:00
Makefile powerpc/8xx: Only perform perf counting when perf is in use. 2018-01-16 23:47:12 +11:00
mpc7450-pmu.c powerpc/perf: Pass the struct perf_events down to compute_mmcr() 2014-07-28 14:30:47 +10:00
perf_regs.c powerpc/perf: Fix oops when kthread execs user process 2017-06-16 21:02:46 +10:00
power4-pmu.c powerpc/perf: Pass the struct perf_events down to compute_mmcr() 2014-07-28 14:30:47 +10:00
power5-pmu.c powerpc/perf: Pass the struct perf_events down to compute_mmcr() 2014-07-28 14:30:47 +10:00
power5+-pmu.c powerpc/perf: Pass the struct perf_events down to compute_mmcr() 2014-07-28 14:30:47 +10:00
power6-pmu.c powerpc/perf: Pass the struct perf_events down to compute_mmcr() 2014-07-28 14:30:47 +10:00
power7-events-list.h powerpc/perf: Make some new raw event codes available in sysfs 2014-03-24 09:48:23 +11:00
power7-pmu.c powerpc/sparse: Make a bunch of things static 2016-09-13 17:35:47 +10:00
power8-events-list.h powerpc/perf: Add Power8 mem_access event to sysfs 2017-04-19 20:00:23 +10:00
power8-pmu.c powerpc/perf: Factor out PPMU_ONLY_COUNT_RUN check code from power8 2017-08-10 22:30:05 +10:00
power9-events-list.h powerpc/perf: Cleanup of PM_BR_CMPL vs. PM_BRU_CMPL in Power9 event list 2017-08-10 22:30:06 +10:00
power9-pmu.c powerpc/perf: Cleanup of PM_BR_CMPL vs. PM_BRU_CMPL in Power9 event list 2017-08-10 22:30:06 +10:00
ppc970-pmu.c powerpc/perf: Pass the struct perf_events down to compute_mmcr() 2014-07-28 14:30:47 +10:00