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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-07-11 11:31:55 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-07-20 16:08:04 +0200 |
| commit | 797efbc523b37de29dc533a8561d34b97deb42e4 (patch) | |
| tree | 1fdfa09a245109903781b272162fa21acea03802 /tools/perf/util/thread.c | |
| parent | perf session: Create guest machines from id_index (diff) | |
| download | linux-797efbc523b37de29dc533a8561d34b97deb42e4.tar.xz linux-797efbc523b37de29dc533a8561d34b97deb42e4.zip | |
perf tools: Add guest_cpu to hypervisor threads
It is possible to know which guest machine was running at a point in time
based on the PID of the currently running host thread. That is, perf
identifies guest machines by the PID of the hypervisor.
To determine the guest CPU, put it on the hypervisor (QEMU) thread for
that VCPU.
This is done when processing the id_index which provides the necessary
information.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220711093218.10967-13-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/thread.c')
| -rw-r--r-- | tools/perf/util/thread.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 665e5c0618ed..e3e5427e1c3c 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -47,6 +47,7 @@ struct thread *thread__new(pid_t pid, pid_t tid) thread->tid = tid; thread->ppid = -1; thread->cpu = -1; + thread->guest_cpu = -1; thread->lbr_stitch_enable = false; INIT_LIST_HEAD(&thread->namespaces_list); INIT_LIST_HEAD(&thread->comm_list); |