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| author | Stephane Eranian <eranian@google.com> | 2022-03-22 23:15:11 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-04-05 10:24:38 +0200 |
| commit | cc37e520a236069c0de0e7ea455082fa11c73b12 (patch) | |
| tree | 12c7c8e3d54956226acad111dbe0b5fa871f8816 /arch/x86/events/Kconfig | |
| parent | perf/x86/amd: Add AMD branch sampling period adjustment (diff) | |
| download | linux-cc37e520a236069c0de0e7ea455082fa11c73b12.tar.xz linux-cc37e520a236069c0de0e7ea455082fa11c73b12.zip | |
perf/x86/amd: Make Zen3 branch sampling opt-in
Add a kernel config option CONFIG_PERF_EVENTS_AMD_BRS
to make the support for AMD Zen3 Branch Sampling (BRS) an opt-in
compile time option.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220322221517.2510440-8-eranian@google.com
Diffstat (limited to 'arch/x86/events/Kconfig')
| -rw-r--r-- | arch/x86/events/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/events/Kconfig b/arch/x86/events/Kconfig index d6cdfe631674..09c56965750a 100644 --- a/arch/x86/events/Kconfig +++ b/arch/x86/events/Kconfig @@ -44,4 +44,12 @@ config PERF_EVENTS_AMD_UNCORE To compile this driver as a module, choose M here: the module will be called 'amd-uncore'. + +config PERF_EVENTS_AMD_BRS + depends on PERF_EVENTS && CPU_SUP_AMD + bool "AMD Zen3 Branch Sampling support" + help + Enable AMD Zen3 branch sampling support (BRS) which samples up to + 16 consecutive taken branches in registers. + endmenu |