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| author | Yabin <yabinc@google.com> | 2022-08-18 17:01:54 -0700 |
|---|---|---|
| committer | Yabin Cui <yabinc@google.com> | 2022-08-29 14:12:49 -0700 |
| commit | ff1c578a0cb239dceb0f0c8ab333bd4d045ff2d8 (patch) | |
| tree | 361f01179e8caf5f62ce1cc66b4635c06707cb66 /simpleperf/workload.cpp | |
| parent | 3e6c8ea1a7623771be4f8b60422ebc8a1b4d7730 (diff) | |
| download | extras-ff1c578a0cb239dceb0f0c8ab333bd4d045ff2d8.tar.gz | |
simpleperf: update --print-hw-counter to check each cpu.
Little/Big cores may have different numbers of CPU PMU hardware counters.
So check them separately.
Bug: 243034569
Test: run simpleperf_unit_test
Change-Id: I33527d69bc935b8523482feaf98378c5f6641762
(cherry picked from commit 6b771a2e12740f4bbcef515d772e62b364d87858)
Diffstat (limited to 'simpleperf/workload.cpp')
| -rw-r--r-- | simpleperf/workload.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/simpleperf/workload.cpp b/simpleperf/workload.cpp index 4bb7c540..142ed713 100644 --- a/simpleperf/workload.cpp +++ b/simpleperf/workload.cpp @@ -18,6 +18,7 @@ #include <errno.h> #include <fcntl.h> +#include <sched.h> #include <sys/prctl.h> #include <sys/wait.h> #include <unistd.h> @@ -160,6 +161,18 @@ void Workload::ChildProcessFn(int start_signal_fd, int exec_child_fd) { } } +bool Workload::SetCpuAffinity(int cpu) { + CHECK_EQ(work_state_, NotYetStartNewProcess); + cpu_set_t mask; + CPU_ZERO(&mask); + CPU_SET(cpu, &mask); + if (sched_setaffinity(GetPid(), sizeof(mask), &mask) != 0) { + PLOG(ERROR) << "sched_setaffinity failed"; + return false; + } + return true; +} + bool Workload::Start() { CHECK_EQ(work_state_, NotYetStartNewProcess); char start_signal = 1; |