From 70c57efb6118bff7426a6086026a4a8f3bd3c9e3 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Sat, 25 May 2013 22:47:10 -0600 Subject: [PATCH] perf tools: Save parent pid in thread struct Information is available, so why not save it in case some command wants to use it. Signed-off-by: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1369543631-5106-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/thread.c | 4 ++++ tools/perf/util/thread.h | 1 + 2 files changed, 5 insertions(+) diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 632e40e..40399cb 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -14,6 +14,7 @@ struct thread *thread__new(pid_t pid) if (self != NULL) { map_groups__init(&self->mg); self->pid = pid; + self->ppid = -1; self->comm = malloc(32); if (self->comm) snprintf(self->comm, 32, ":%d", self->pid); @@ -82,5 +83,8 @@ int thread__fork(struct thread *self, struct thread *parent) for (i = 0; i < MAP__NR_TYPES; ++i) if (map_groups__clone(&self->mg, &parent->mg, i) < 0) return -ENOMEM; + + self->ppid = parent->pid; + return 0; } diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h index 5ad2664..eeb7ac6 100644 --- a/tools/perf/util/thread.h +++ b/tools/perf/util/thread.h @@ -13,6 +13,7 @@ struct thread { }; struct map_groups mg; pid_t pid; + pid_t ppid; char shortname[3]; bool comm_set; char *comm; -- 2.7.4