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perf tools: Save parent pid in thread struct

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Information is available, so why not save it in case some command wants
to use it.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1369543631-5106-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Ahern
2013-05-25 22:47:10 -06:00
committed by Arnaldo Carvalho de Melo
parent 45528f7c69
commit 70c57efb61
2 changed files with 5 additions and 0 deletions
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4
tools/perf/util/thread.c
View File

@@ -14,6 +14,7 @@ struct thread *thread__new(pid_t pid)
if (self != NULL) { if (self != NULL) {
map_groups__init(&self->mg); map_groups__init(&self->mg);
self->pid = pid; self->pid = pid;
self->ppid = -1;
self->comm = malloc(32); self->comm = malloc(32);
if (self->comm) if (self->comm)
snprintf(self->comm, 32, ":%d", self->pid); 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) for (i = 0; i < MAP__NR_TYPES; ++i)
if (map_groups__clone(&self->mg, &parent->mg, i) < 0) if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
return -ENOMEM; return -ENOMEM;
self->ppid = parent->pid;
return 0; return 0;
} }

1
tools/perf/util/thread.h
View File

@@ -13,6 +13,7 @@ struct thread {
}; };
struct map_groups mg; struct map_groups mg;
pid_t pid; pid_t pid;
pid_t ppid;
char shortname[3]; char shortname[3];
bool comm_set; bool comm_set;
char *comm; char *comm;