[PATCH 07/29] perf tools: Get current comm instead of last one
From: Arnaldo Carvalho de Melo
Date: Mon Nov 04 2013 - 12:59:31 EST
From: Namhyung Kim <namhyung.kim@xxxxxxx>
At insert time, a hist entry should reference comm at the time otherwise
it'll get the last comm anyway.
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Acked-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Tested-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-n6pykiiymtgmcjs834go2t8x@xxxxxxxxxxxxxx
[ Fixed up const pointer issues ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/comm.c | 15 +++++++++++++++
tools/perf/util/comm.h | 1 +
tools/perf/util/hist.c | 3 +++
tools/perf/util/sort.c | 14 +++++---------
tools/perf/util/sort.h | 1 +
tools/perf/util/thread.c | 6 +++---
tools/perf/util/thread.h | 2 ++
7 files changed, 30 insertions(+), 12 deletions(-)
diff --git a/tools/perf/util/comm.c b/tools/perf/util/comm.c
index 8b3ac9f0207f..ee0df0e24cdb 100644
--- a/tools/perf/util/comm.c
+++ b/tools/perf/util/comm.c
@@ -94,6 +94,21 @@ struct comm *comm__new(const char *str, u64 timestamp)
return comm;
}
+void comm__override(struct comm *comm, const char *str, u64 timestamp)
+{
+ struct comm_str *old = comm->comm_str;
+
+ comm->comm_str = comm_str__findnew(str, &comm_str_root);
+ if (!comm->comm_str) {
+ comm->comm_str = old;
+ return;
+ }
+
+ comm->start = timestamp;
+ comm_str__get(comm->comm_str);
+ comm_str__put(old);
+}
+
void comm__free(struct comm *comm)
{
comm_str__put(comm->comm_str);
diff --git a/tools/perf/util/comm.h b/tools/perf/util/comm.h
index f62d215bede2..7a86e5656710 100644
--- a/tools/perf/util/comm.h
+++ b/tools/perf/util/comm.h
@@ -16,5 +16,6 @@ struct comm {
void comm__free(struct comm *comm);
struct comm *comm__new(const char *str, u64 timestamp);
const char *comm__str(const struct comm *comm);
+void comm__override(struct comm *comm, const char *str, u64 timestamp);
#endif /* __PERF_COMM_H */
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 7e80253074b0..30793f98c8bb 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -416,6 +416,7 @@ struct hist_entry *__hists__add_mem_entry(struct hists *hists,
{
struct hist_entry entry = {
.thread = al->thread,
+ .comm = thread__comm(al->thread),
.ms = {
.map = al->map,
.sym = al->sym,
@@ -446,6 +447,7 @@ struct hist_entry *__hists__add_branch_entry(struct hists *hists,
{
struct hist_entry entry = {
.thread = al->thread,
+ .comm = thread__comm(al->thread),
.ms = {
.map = bi->to.map,
.sym = bi->to.sym,
@@ -475,6 +477,7 @@ struct hist_entry *__hists__add_entry(struct hists *hists,
{
struct hist_entry entry = {
.thread = al->thread,
+ .comm = thread__comm(al->thread),
.ms = {
.map = al->map,
.sym = al->sym,
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index bf91d0e5c16e..3c1b75c8b9a6 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1,5 +1,6 @@
#include "sort.h"
#include "hist.h"
+#include "comm.h"
#include "symbol.h"
regex_t parent_regex;
@@ -81,25 +82,20 @@ static int64_t
sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
{
/* Compare the addr that should be unique among comm */
- return thread__comm_str(right->thread) - thread__comm_str(left->thread);
+ return comm__str(right->comm) - comm__str(left->comm);
}
static int64_t
sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
{
- const char *comm_l = thread__comm_str(left->thread);
- const char *comm_r = thread__comm_str(right->thread);
-
- if (!comm_l || !comm_r)
- return cmp_null(comm_l, comm_r);
-
- return strcmp(comm_l, comm_r);
+ /* Compare the addr that should be unique among comm */
+ return comm__str(right->comm) - comm__str(left->comm);
}
static int hist_entry__comm_snprintf(struct hist_entry *he, char *bf,
size_t size, unsigned int width)
{
- return repsep_snprintf(bf, size, "%*s", width, thread__comm_str(he->thread));
+ return repsep_snprintf(bf, size, "%*s", width, comm__str(he->comm));
}
struct sort_entry sort_comm = {
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index bf4333694d3a..f4e16f359d64 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -84,6 +84,7 @@ struct hist_entry {
struct he_stat stat;
struct map_symbol ms;
struct thread *thread;
+ struct comm *comm;
u64 ip;
u64 transaction;
s32 cpu;
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 15c53c2e109e..cd8e2f592719 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -54,7 +54,7 @@ void thread__delete(struct thread *thread)
free(thread);
}
-static struct comm *thread__comm(const struct thread *thread)
+struct comm *thread__comm(const struct thread *thread)
{
if (list_empty(&thread->comm_list))
return NULL;
@@ -69,8 +69,8 @@ int thread__set_comm(struct thread *thread, const char *str, u64 timestamp)
/* Override latest entry if it had no specific time coverage */
if (!curr->start) {
- list_del(&curr->list);
- comm__free(curr);
+ comm__override(curr, str, timestamp);
+ return 0;
}
new = comm__new(str, timestamp);
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 8702c6b4163a..373c055989ed 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -26,6 +26,7 @@ struct thread {
};
struct machine;
+struct comm;
struct thread *thread__new(pid_t pid, pid_t tid);
void thread__delete(struct thread *self);
@@ -36,6 +37,7 @@ static inline void thread__exited(struct thread *thread)
int thread__set_comm(struct thread *thread, const char *comm, u64 timestamp);
int thread__comm_len(struct thread *self);
+struct comm *thread__comm(const struct thread *thread);
const char *thread__comm_str(const struct thread *thread);
void thread__insert_map(struct thread *self, struct map *map);
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp);
--
1.8.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/