Ravi Bangoria 1bd5218fe5 perf/ibs: Fix interface via core pmu events ... [ Upstream commit 2fad201fe3 ] Although, IBS pmus can be invoked via their own interface, indirect IBS invocation via core pmu events is also supported with fixed set of events: cpu-cycles:p, r076:p (same as cpu-cycles:p) and r0C1:p (micro-ops) for user convenience. This indirect IBS invocation is broken since commit 66d258c5b0 ("perf/core: Optimize perf_init_event()"), which added RAW pmu under 'pmu_idr' list and thus if event_init() fails with RAW pmu, it started returning error instead of trying other pmus. Forward precise events from core pmu to IBS by overwriting 'type' and 'config' in the kernel copy of perf_event_attr. Overwriting will cause perf_init_event() to retry with updated 'type' and 'config', which will automatically forward event to IBS pmu. Without patch: $ sudo ./perf record -C 0 -e r076:p -- sleep 1 Error: The r076:p event is not supported. With patch: $ sudo ./perf record -C 0 -e r076:p -- sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.341 MB perf.data (37 samples) ] Fixes: 66d258c5b0 ("perf/core: Optimize perf_init_event()") Reported-by: Stephane Eranian <eranian@google.com> Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20230504110003.2548-3-ravi.bangoria@amd.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-07-11 19:39:25 +02:00
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amd	perf/ibs: Fix interface via core pmu events	2023-07-11 19:39:25 +02:00
intel	perf/x86/intel: Save/restore cpuc->active_pebs_data_cfg when using guest PEBS	2023-06-09 10:48:11 +02:00
zhaoxin	x86/perf/zhaoxin: Add stepping check for ZXC	2023-02-11 11:18:12 +01:00
core.c	perf/x86: Fix missing sample size update on AMD BRS	2023-05-17 14:02:05 +02:00
Kconfig	perf/x86/Kconfig: Fix indentation in the Kconfig file	2022-05-25 15:54:26 +02:00
Makefile	perf/x86: Move branch classifier	2022-08-27 00:05:44 +02:00
msr.c	perf/x86/msr: Add Meteor Lake support	2023-01-09 12:22:09 +01:00
perf_event.h	perf/x86: Support Retire Latency	2023-01-09 12:22:07 +01:00
perf_event_flags.h	x86/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH	2022-09-07 21:54:01 +02:00
probe.c	perf/x86/rapl: Add msr mask support	2021-02-10 14:44:54 +01:00
probe.h	perf/x86/rapl: Add msr mask support	2021-02-10 14:44:54 +01:00
rapl.c	perf/x86/rapl: Add support for Intel Emerald Rapids	2023-01-04 21:00:29 +01:00
utils.c	perf/x86/utils: Fix uninitialized var in get_branch_type()	2022-09-29 12:20:56 +02:00