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Subject[PATCH 27/29] perf threads: Move thread_map to separate file
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

To untangle it from struct thread handling, that is tied to symbols, etc.

Right now in the python bindings I'm working on I need just a subset of
the util/ files, untangling it allows me to do that.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Makefile | 2 +
tools/perf/builtin-record.c | 1 +
tools/perf/builtin-stat.c | 1 +
tools/perf/builtin-test.c | 2 +-
tools/perf/builtin-top.c | 1 +
tools/perf/util/evsel.c | 2 +-
tools/perf/util/thread.c | 55 ------------------------------------
tools/perf/util/thread.h | 14 ---------
tools/perf/util/thread_map.c | 64 ++++++++++++++++++++++++++++++++++++++++++
tools/perf/util/thread_map.h | 15 ++++++++++
10 files changed, 86 insertions(+), 71 deletions(-)
create mode 100644 tools/perf/util/thread_map.c
create mode 100644 tools/perf/util/thread_map.h
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index f20bc6f..638e8e1 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -426,6 +426,7 @@ LIB_H += util/values.h
LIB_H += util/sort.h
LIB_H += util/hist.h
LIB_H += util/thread.h
+LIB_H += util/thread_map.h
LIB_H += util/trace-event.h
LIB_H += util/probe-finder.h
LIB_H += util/probe-event.h
@@ -471,6 +472,7 @@ LIB_OBJS += $(OUTPUT)util/map.o
LIB_OBJS += $(OUTPUT)util/pstack.o
LIB_OBJS += $(OUTPUT)util/session.o
LIB_OBJS += $(OUTPUT)util/thread.o
+LIB_OBJS += $(OUTPUT)util/thread_map.o
LIB_OBJS += $(OUTPUT)util/trace-event-parse.o
LIB_OBJS += $(OUTPUT)util/trace-event-read.o
LIB_OBJS += $(OUTPUT)util/trace-event-info.o
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 1346d42..d788630 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -24,6 +24,7 @@
#include "util/session.h"
#include "util/symbol.h"
#include "util/cpumap.h"
+#include "util/thread_map.h"

#include <unistd.h>
#include <sched.h>
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index e2a2d02..8906adf 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -49,6 +49,7 @@
#include "util/header.h"
#include "util/cpumap.h"
#include "util/thread.h"
+#include "util/thread_map.h"

#include <sys/prctl.h>
#include <math.h>
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 4fd3453..dc91ee0 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -12,7 +12,7 @@
#include "util/parse-events.h"
#include "util/session.h"
#include "util/symbol.h"
-#include "util/thread.h"
+#include "util/thread_map.h"

static long page_size;

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 31fbaf3..d0b16d9 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -26,6 +26,7 @@
#include "util/session.h"
#include "util/symbol.h"
#include "util/thread.h"
+#include "util/thread_map.h"
#include "util/util.h"
#include <linux/rbtree.h>
#include "util/parse-options.h"
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index ee49035..9a6d942 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -3,7 +3,7 @@
#include "../perf.h"
#include "util.h"
#include "cpumap.h"
-#include "thread.h"
+#include "thread_map.h"

#include <unistd.h>
#include <sys/mman.h>
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 00f4ead..d5d3b22 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -7,61 +7,6 @@
#include "util.h"
#include "debug.h"

-/* Skip "." and ".." directories */
-static int filter(const struct dirent *dir)
-{
- if (dir->d_name[0] == '.')
- return 0;
- else
- return 1;
-}
-
-struct thread_map *thread_map__new_by_pid(pid_t pid)
-{
- struct thread_map *threads;
- char name[256];
- int items;
- struct dirent **namelist = NULL;
- int i;
-
- sprintf(name, "/proc/%d/task", pid);
- items = scandir(name, &namelist, filter, NULL);
- if (items <= 0)
- return NULL;
-
- threads = malloc(sizeof(*threads) + sizeof(pid_t) * items);
- if (threads != NULL) {
- for (i = 0; i < items; i++)
- threads->map[i] = atoi(namelist[i]->d_name);
- threads->nr = items;
- }
-
- for (i=0; i<items; i++)
- free(namelist[i]);
- free(namelist);
-
- return threads;
-}
-
-struct thread_map *thread_map__new_by_tid(pid_t tid)
-{
- struct thread_map *threads = malloc(sizeof(*threads) + sizeof(pid_t));
-
- if (threads != NULL) {
- threads->map[0] = tid;
- threads->nr = 1;
- }
-
- return threads;
-}
-
-struct thread_map *thread_map__new(pid_t pid, pid_t tid)
-{
- if (pid != -1)
- return thread_map__new_by_pid(pid);
- return thread_map__new_by_tid(tid);
-}
-
static struct thread *thread__new(pid_t pid)
{
struct thread *self = zalloc(sizeof(*self));
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index d757410..e5f2401 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -18,24 +18,10 @@ struct thread {
int comm_len;
};

-struct thread_map {
- int nr;
- int map[];
-};
-
struct perf_session;

void thread__delete(struct thread *self);

-struct thread_map *thread_map__new_by_pid(pid_t pid);
-struct thread_map *thread_map__new_by_tid(pid_t tid);
-struct thread_map *thread_map__new(pid_t pid, pid_t tid);
-
-static inline void thread_map__delete(struct thread_map *threads)
-{
- free(threads);
-}
-
int thread__set_comm(struct thread *self, const char *comm);
int thread__comm_len(struct thread *self);
struct thread *perf_session__findnew(struct perf_session *self, pid_t pid);
diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c
new file mode 100644
index 0000000..a5df131
--- /dev/null
+++ b/tools/perf/util/thread_map.c
@@ -0,0 +1,64 @@
+#include <dirent.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "thread_map.h"
+
+/* Skip "." and ".." directories */
+static int filter(const struct dirent *dir)
+{
+ if (dir->d_name[0] == '.')
+ return 0;
+ else
+ return 1;
+}
+
+struct thread_map *thread_map__new_by_pid(pid_t pid)
+{
+ struct thread_map *threads;
+ char name[256];
+ int items;
+ struct dirent **namelist = NULL;
+ int i;
+
+ sprintf(name, "/proc/%d/task", pid);
+ items = scandir(name, &namelist, filter, NULL);
+ if (items <= 0)
+ return NULL;
+
+ threads = malloc(sizeof(*threads) + sizeof(pid_t) * items);
+ if (threads != NULL) {
+ for (i = 0; i < items; i++)
+ threads->map[i] = atoi(namelist[i]->d_name);
+ threads->nr = items;
+ }
+
+ for (i=0; i<items; i++)
+ free(namelist[i]);
+ free(namelist);
+
+ return threads;
+}
+
+struct thread_map *thread_map__new_by_tid(pid_t tid)
+{
+ struct thread_map *threads = malloc(sizeof(*threads) + sizeof(pid_t));
+
+ if (threads != NULL) {
+ threads->map[0] = tid;
+ threads->nr = 1;
+ }
+
+ return threads;
+}
+
+struct thread_map *thread_map__new(pid_t pid, pid_t tid)
+{
+ if (pid != -1)
+ return thread_map__new_by_pid(pid);
+ return thread_map__new_by_tid(tid);
+}
+
+void thread_map__delete(struct thread_map *threads)
+{
+ free(threads);
+}
diff --git a/tools/perf/util/thread_map.h b/tools/perf/util/thread_map.h
new file mode 100644
index 0000000..3cb9073
--- /dev/null
+++ b/tools/perf/util/thread_map.h
@@ -0,0 +1,15 @@
+#ifndef __PERF_THREAD_MAP_H
+#define __PERF_THREAD_MAP_H
+
+#include <sys/types.h>
+
+struct thread_map {
+ int nr;
+ int map[];
+};
+
+struct thread_map *thread_map__new_by_pid(pid_t pid);
+struct thread_map *thread_map__new_by_tid(pid_t tid);
+struct thread_map *thread_map__new(pid_t pid, pid_t tid);
+void thread_map__delete(struct thread_map *threads);
+#endif /* __PERF_THREAD_MAP_H */
--
1.6.2.5


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