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Ravi Bangoria 78075d9475 perf test: Add selftest to test IBS invocation via core pmu events

IBS pmu can be invoked via fixed set of core pmu events with 'precise_ip'
set to 1. Add a simple event open test for all these events.

Without kernel fix:
  $ sudo ./perf test -vv 76
   76: AMD IBS via core pmu                                      :
  --- start ---
  test child forked, pid 6553
  Using CPUID AuthenticAMD-25-1-1
  type: 0x0, config: 0x0, fd: 3  -  Pass
  type: 0x0, config: 0x1, fd: -1  -  Pass
  type: 0x4, config: 0x76, fd: -1  -  Fail
  type: 0x4, config: 0xc1, fd: -1  -  Fail
  type: 0x4, config: 0x12, fd: -1  -  Pass
  test child finished with -1
  ---- end ----
  AMD IBS via core pmu: FAILED!

With kernel fix:
  $ sudo ./perf test -vv 76
   76: AMD IBS via core pmu                                      :
  --- start ---
  test child forked, pid 7526
  Using CPUID AuthenticAMD-25-1-1
  type: 0x0, config: 0x0, fd: 3  -  Pass
  type: 0x0, config: 0x1, fd: -1  -  Pass
  type: 0x4, config: 0x76, fd: 3  -  Pass
  type: 0x4, config: 0xc1, fd: 3  -  Pass
  type: 0x4, config: 0x12, fd: -1  -  Pass
  test child finished with 0
  ---- end ----
  AMD IBS via core pmu: Ok

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230504110003.2548-5-ravi.bangoria@amd.com

2023-05-08 10:58:31 +02:00

annotate

perf annotate: Add fusion logic for AMD microarchs

2021-09-15 17:54:52 -03:00

entry/syscalls

tools headers UAPI: Sync files changed by new set_mempolicy_home_node syscall

2022-01-20 11:20:37 -03:00

include

perf test: Add selftest to test IBS invocation via core pmu events

2023-05-08 10:58:31 +02:00

tests

perf test: Add selftest to test IBS invocation via core pmu events