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linux/arch/powerpc/perf
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Kajol Jain 3c69a5f222 powerpc/perf: Fix the check for SIAR value 
Incase of random sampling, there can be scenarios where
Sample Instruction Address Register(SIAR) may not latch
to the sampled instruction and could result in
the value of 0. In these scenarios it is preferred to
return regs->nip. These corner cases are seen in the
previous generation (p9) also.

Patch adds the check for SIAR value along with regs_use_siar
and siar_valid checks so that the function will return
regs->nip incase SIAR is zero.

Patch drops the code under PPMU_P10_DD1 flag check
which handles SIAR 0 case only for Power10 DD1.

Fixes: 2ca13a4cc5 ("powerpc/perf: Use regs->nip when SIAR is zero")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210818171556.36912-3-kjain@linux.ibm.com
2021-08-25 22:38:19 +10:00
..
req-gen powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00
8xx-pmu.c powerpc/ppc-opcode: Add PPC_RAW_MFSPR() 2020-12-09 23:48:13 +11:00
bhrb.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
callchain_32.c powerpc/vdso: Retrieve sigtramp offsets at buildtime 2020-12-04 01:01:17 +11:00
callchain_64.c powerpc/vdso: Retrieve sigtramp offsets at buildtime 2020-12-04 01:01:17 +11:00
callchain.c powerpc: make stack walking KASAN-safe 2021-06-17 00:09:11 +10:00
callchain.h powerpc/64s/perf: perf interrupt does not have to get_user_pages to access user memory 2020-11-19 16:56:52 +11:00
core-book3s.c powerpc/perf: Fix the check for SIAR value 2021-08-25 22:38:19 +10:00
core-fsl-emb.c powerpc/perf: move perf irq/nmi handling details into traps.c 2021-02-09 00:02:10 +11:00
e500-pmu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
e6500-pmu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
generic-compat-pmu.c powerpc/pmu: Make the generic compat PMU use the architected events 2021-06-25 14:47:20 +10:00
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: Make some symbols static 2021-04-14 23:04:17 +10:00
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 powerpc/perf/hv-gpci: Fix starting index value 2020-10-07 22:34:48 +11:00
hv-gpci.c powerpc/perf/hv-gpci: Fix counter value parsing 2021-08-20 17:00:54 +10:00
hv-gpci.h powerpc/perf: consolidate GPCI hcall structs into asm/hvcall.h 2020-09-02 11:00:20 +10:00
imc-pmu.c powerpc: fix -Wimplicit-fallthrough 2020-11-18 14:18:09 -06:00
internal.h powerpc/perf: power10 Performance Monitoring support 2020-07-22 21:56:41 +10:00
isa207-common.c powerpc/perf: Fix sampled instruction type for larx/stcx 2021-04-23 01:38:02 +10:00
isa207-common.h powerpc/perf: Fix sampled instruction type for larx/stcx 2021-04-23 01:38:02 +10:00
Makefile powerpc/perf: Simplify Makefile 2021-06-15 17:12:27 +10:00
mpc7450-pmu.c powerpc/perf: Adds support for programming of Thresholding in P10 2021-02-11 23:35:36 +11:00
perf_regs.c powerpc/perf: Expose Performance Monitor Counter SPR's as part of extended regs 2021-02-09 01:09:44 +11:00
power5-pmu.c powerpc/perf: Adds support for programming of Thresholding in P10 2021-02-11 23:35:36 +11:00
power5+-pmu.c powerpc/perf: Adds support for programming of Thresholding in P10 2021-02-11 23:35:36 +11:00
power6-pmu.c powerpc/perf: Adds support for programming of Thresholding in P10 2021-02-11 23:35:36 +11:00
power7-events-list.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
power7-pmu.c powerpc/perf: Adds support for programming of Thresholding in P10 2021-02-11 23:35:36 +11:00
power8-events-list.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
power8-pmu.c powerpc/perf: Update Power PMU cache_events to u64 type 2020-07-22 21:56:40 +10:00
power9-events-list.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
power9-pmu.c powerpc/perf: Add platform specific check_attr_config 2021-04-19 12:22:09 +10:00
power10-events-list.h powerpc/perf: Fix the threshold event selection for memory events in power10 2021-04-23 01:38:02 +10:00
power10-pmu.c powerpc/perf: Add platform specific check_attr_config 2021-04-19 12:22:09 +10:00
ppc970-pmu.c powerpc/perf: Adds support for programming of Thresholding in P10 2021-02-11 23:35:36 +11:00