linux/Documentation/arm64
Yicong Yang f9a2c79c29 perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09
[ Upstream commit 0242737dc4 ]

Some HiSilicon SMMU PMCG suffers the erratum 162001900 that the PMU
disable control sometimes fail to disable the counters. This will lead
to error or inaccurate data since before we enable the counters the
counter's still counting for the event used in last perf session.

This patch tries to fix this by hardening the global disable process.
Before disable the PMU, writing an invalid event type (0xffff) to
focibly stop the counters. Correspondingly restore each events on
pmu::pmu_enable().

Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20230814124012.58013-1-yangyicong@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-09-23 11:09:55 +02:00
..
acpi_object_usage.rst Documentation: arm64/acpi : clarify arm64 support of IBFT 2021-03-22 12:43:20 +00:00
amu.rst Documentation: Chinese translation of Documentation/arm64/amu.rst 2020-09-28 15:24:24 -06:00
arm-acpi.rst arm64: Replace HTTP links with HTTPS ones 2020-07-23 14:04:37 -06:00
asymmetric-32bit.rst Documentation: arm64: describe asymmetric 32-bit support 2021-08-20 12:33:07 +02:00
booting.rst arm64: Document the requirement for SCR_EL3.HCE 2021-08-24 16:44:23 +01:00
cpu-feature-registers.rst arm64: cpufeature: add HWCAP for FEAT_RPRES 2022-03-11 12:22:33 +01:00
elf_hwcaps.rst arm64: cpufeature: add HWCAP for FEAT_RPRES 2022-03-11 12:22:33 +01:00
features.rst docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
hugetlbpage.rst Documentation: Chinese translation of Documentation/arm64/hugetlbpage.rst 2020-10-21 15:15:17 -06:00
index.rst Documentation: arm64: describe asymmetric 32-bit support 2021-08-20 12:33:07 +02:00
kasan-offsets.sh arm64: mm: extend linear region for 52-bit VA configurations 2020-11-09 17:15:37 +00:00
legacy_instructions.rst docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
memory-tagging-extension.rst Documentation: document the preferred tag checking mode feature 2021-07-28 18:39:26 +01:00
memory.rst ARM: 2020-12-20 10:44:05 -08:00
perf.rst Documentation: Chinese translation of Documentation/arm64/perf.rst 2020-11-13 15:21:38 -07:00
pointer-authentication.rst arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) 2021-04-13 17:31:44 +01:00
silicon-errata.rst perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 2023-09-23 11:09:55 +02:00
sve.rst It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
tagged-address-abi.rst userfaultfd: do not untag user pointers 2021-07-23 17:43:28 -07:00
tagged-pointers.rst arm64: expose FAR_EL1 tag bits in siginfo 2020-11-23 18:17:39 +00:00