perf tools: Factor out thread__set_guest_comm()

Factor out thread__set_guest_comm() so it can be reused.

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: Leo Yan <leo.yan@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220517131011.6117-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index e96f6ea4fd828555d1e91440f6d4b0f5b123f10d..e67b5a7670f3d15a8d86adc89202b5503cc720de 100644 (file)
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -84,6 +84,14 @@ static int machine__set_mmap_name(struct machine *machine)
        return machine->mmap_name ? 0 : -ENOMEM;
 }
 
+static void thread__set_guest_comm(struct thread *thread, pid_t pid)
+{
+       char comm[64];
+
+       snprintf(comm, sizeof(comm), "[guest/%d]", pid);
+       thread__set_comm(thread, comm, 0);
+}
+
 int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
 {
        int err = -ENOMEM;
@@ -119,13 +127,11 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
        if (pid != HOST_KERNEL_ID) {
                struct thread *thread = machine__findnew_thread(machine, -1,
                                                                pid);
-               char comm[64];
 
                if (thread == NULL)
                        goto out;
 
-               snprintf(comm, sizeof(comm), "[guest/%d]", pid);
-               thread__set_comm(thread, comm, 0);
+               thread__set_guest_comm(thread, pid);
                thread__put(thread);
        }