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| author |   Ray Kinsella <mdr@ashroe.eu> | 2021-11-26 14:57:35 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2022-01-27 20:01:45 +0000 |
| commit | 0024e53ad048ff0a3cb34bd95679606c11a7154b (patch) | |
| tree | 704f03a531a5742dce054bc8254c206deaa510cb /src/vppinfra/cpu.h | |
| parent | ae0e3e748f04a1fb9ad2393533a164611c417103 (diff) | |
perfmon: prune bundles by available pmu counters
Prune perfmon bundles that exceed the number of available pmu counters.
Type: improvement
Signed-off-by: Ray Kinsella <mdr@ashroe.eu>
Change-Id: I70fec26bb8ca915f4b980963e06c2e43dfde5a23
Diffstat (limited to 'src/vppinfra/cpu.h')
| -rw-r--r-- | src/vppinfra/cpu.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/vppinfra/cpu.h b/src/vppinfra/cpu.h index 50d8b61cab3..329e5cc298d 100644 --- a/src/vppinfra/cpu.h +++ b/src/vppinfra/cpu.h @@ -266,6 +266,24 @@ clib_cpu_march_priority_hsw () return -1; } +#define X86_CPU_ARCH_PERF_FUNC 0xA + +static inline int +clib_get_pmu_counter_count (u8 *fixed, u8 *general) +{ +#if defined(__x86_64__) + u32 __clib_unused eax = 0, ebx = 0, ecx = 0, edx = 0; + clib_get_cpuid (X86_CPU_ARCH_PERF_FUNC, &eax, &ebx, &ecx, &edx); + + *general = (eax & 0xFF00) >> 8; + *fixed = (edx & 0xF); + + return 1; +#else + return 0; +#endif +} + static inline u32 clib_cpu_implementer () { |