6 files changed, 45 insertions, 84 deletions

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 8c84320ecb06..3fe0de03004d 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -37,10 +37,6 @@ static int		print_line;
 static unsigned long    page_size;
 static unsigned long    mmap_window = 32;
 
-static struct rb_root   threads;
-static struct thread    *last_match;
-
-
 struct sym_ext {
         struct rb_node  node;
         double          percent;
@@ -96,12 +92,10 @@ static int
 process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 {
         char level;
-        struct thread *thread;
         u64 ip = event->ip.ip;
         struct map *map = NULL;
         struct symbol *sym = NULL;
-
-        thread = threads__findnew(event->ip.pid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->ip.pid);
 
         dump_printf("%p [%p]: PERF_EVENT (IP, %d): %d: %p\n",
                 (void *)(offset + head),
@@ -166,10 +160,8 @@ got_map:
 static int
 process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
         struct map *map = map__new(&event->mmap, NULL, 0);
-
-        thread = threads__findnew(event->mmap.pid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->mmap.pid);
 
         dump_printf("%p [%p]: PERF_RECORD_MMAP %d: [%p(%p) @ %p]: %s\n",
                 (void *)(offset + head),
@@ -194,9 +186,8 @@ process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
 static int
 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
+        struct thread *thread = threads__findnew(event->comm.pid);
 
-        thread = threads__findnew(event->comm.pid, &threads, &last_match);
         dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
                 (void *)(offset + head),
                 (void *)(long)(event->header.size),
@@ -215,11 +206,9 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 static int
 process_fork_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
-        struct thread *parent;
+        struct thread *thread = threads__findnew(event->fork.pid);
+        struct thread *parent = threads__findnew(event->fork.ppid);
 
-        thread = threads__findnew(event->fork.pid, &threads, &last_match);
-        parent = threads__findnew(event->fork.ppid, &threads, &last_match);
         dump_printf("%p [%p]: PERF_RECORD_FORK: %d:%d\n",
                 (void *)(offset + head),
                 (void *)(long)(event->header.size),
@@ -558,7 +547,7 @@ static int __cmd_annotate(void)
         uint32_t size;
         char *buf;
 
-        register_idle_thread(&threads, &last_match);
+        register_idle_thread();
 
         input = open(input_name, O_RDONLY);
         if (input < 0) {
@@ -659,7 +648,7 @@ more:
                 return 0;
 
         if (verbose > 3)
-                threads__fprintf(stdout, &threads);
+                threads__fprintf(stdout);
 
         if (verbose > 2)
                 dsos__fprintf(stdout);
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index f57a23b19f3c..015c79745966 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -55,9 +55,6 @@ static char		callchain_default_opt[] = "fractal,0.5";
 static char             *cwd;
 static int              cwdlen;
 
-static struct rb_root   threads;
-static struct thread    *last_match;
-
 static struct perf_header *header;
 
 static u64              sample_type;
@@ -593,15 +590,13 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 {
         char level;
         struct symbol *sym = NULL;
-        struct thread *thread;
         u64 ip = event->ip.ip;
         u64 period = 1;
         struct map *map = NULL;
         void *more_data = event->ip.__more_data;
         struct ip_callchain *chain = NULL;
         int cpumode;
-
-        thread = threads__findnew(event->ip.pid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->ip.pid);
 
         if (sample_type & PERF_SAMPLE_PERIOD) {
                 period = *(u64 *)more_data;
@@ -685,10 +680,8 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 static int
 process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
         struct map *map = map__new(&event->mmap, cwd, cwdlen);
-
-        thread = threads__findnew(event->mmap.pid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->mmap.pid);
 
         dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
                 (void *)(offset + head),
@@ -714,9 +707,7 @@ process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
 static int
 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
-
-        thread = threads__findnew(event->comm.pid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->comm.pid);
 
         dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
                 (void *)(offset + head),
@@ -736,11 +727,8 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 static int
 process_task_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
-        struct thread *parent;
-
-        thread = threads__findnew(event->fork.pid, &threads, &last_match);
-        parent = threads__findnew(event->fork.ppid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->fork.pid);
+        struct thread *parent = threads__findnew(event->fork.ppid);
 
         dump_printf("%p [%p]: PERF_RECORD_%s: (%d:%d):(%d:%d)\n",
                 (void *)(offset + head),
@@ -857,7 +845,7 @@ static int __cmd_report(void)
         struct thread *idle;
         int ret;
 
-        idle = register_idle_thread(&threads, &last_match);
+        idle = register_idle_thread();
         thread__comm_adjust(idle);
 
         if (show_threads)
@@ -881,7 +869,7 @@ static int __cmd_report(void)
                 return 0;
 
         if (verbose > 3)
-                threads__fprintf(stdout, &threads);
+                threads__fprintf(stdout);
 
         if (verbose > 2)
                 dsos__fprintf(stdout);
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 387a44234368..73bdad029730 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -24,9 +24,6 @@ static char			const *input_name = "perf.data";
 
 static unsigned long            total_comm = 0;
 
-static struct rb_root           threads;
-static struct thread            *last_match;
-
 static struct perf_header       *header;
 static u64                      sample_type;
 
@@ -641,9 +638,7 @@ static void test_calibrations(void)
 static int
 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
-
-        thread = threads__findnew(event->comm.tid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->comm.tid);
 
         dump_printf("%p [%p]: perf_event_comm: %s:%d\n",
                 (void *)(offset + head),
@@ -1086,8 +1081,8 @@ latency_switch_event(struct trace_switch_event *switch_event,
                 die("hm, delta: %Ld < 0 ?\n", delta);
 
 
-        sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match);
-        sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match);
+        sched_out = threads__findnew(switch_event->prev_pid);
+        sched_in = threads__findnew(switch_event->next_pid);
 
         out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
         if (!out_events) {
@@ -1120,13 +1115,10 @@ latency_runtime_event(struct trace_runtime_event *runtime_event,
                      u64 timestamp,
                      struct thread *this_thread __used)
 {
-        struct work_atoms *atoms;
-        struct thread *thread;
+        struct thread *thread = threads__findnew(runtime_event->pid);
+        struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
 
         BUG_ON(cpu >= MAX_CPUS || cpu < 0);
-
-        thread = threads__findnew(runtime_event->pid, &threads, &last_match);
-        atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
         if (!atoms) {
                 thread_atoms_insert(thread);
                 atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
@@ -1153,7 +1145,7 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
         if (!wakeup_event->success)
                 return;
 
-        wakee = threads__findnew(wakeup_event->pid, &threads, &last_match);
+        wakee = threads__findnew(wakeup_event->pid);
         atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
         if (!atoms) {
                 thread_atoms_insert(wakee);
@@ -1202,7 +1194,7 @@ latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
         if (profile_cpu == -1)
                 return;
 
-        migrant = threads__findnew(migrate_task_event->pid, &threads, &last_match);
+        migrant = threads__findnew(migrate_task_event->pid);
         atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
         if (!atoms) {
                 thread_atoms_insert(migrant);
@@ -1458,8 +1450,8 @@ map_switch_event(struct trace_switch_event *switch_event,
                 die("hm, delta: %Ld < 0 ?\n", delta);
 
 
-        sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match);
-        sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match);
+        sched_out = threads__findnew(switch_event->prev_pid);
+        sched_in = threads__findnew(switch_event->next_pid);
 
         curr_thread[this_cpu] = sched_in;
 
@@ -1649,7 +1641,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
         if (!(sample_type & PERF_SAMPLE_RAW))
                 return 0;
 
-        thread = threads__findnew(event->ip.pid, &threads, &last_match);
+        thread = threads__findnew(event->ip.pid);
 
         if (sample_type & PERF_SAMPLE_TIME) {
                 timestamp = *(u64 *)more_data;
@@ -1725,7 +1717,7 @@ static struct perf_file_handler file_handler = {
 
 static int read_events(void)
 {
-        register_idle_thread(&threads, &last_match);
+        register_idle_thread();
         register_perf_file_handler(&file_handler);
 
         return mmap_dispatch_perf_file(&header, input_name, 0, 0, &cwdlen, &cwd);
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index fb3f3c220211..ccf867dbab5c 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -19,9 +19,6 @@ static char		const *input_name = "perf.data";
 static unsigned long    total = 0;
 static unsigned long    total_comm = 0;
 
-static struct rb_root   threads;
-static struct thread    *last_match;
-
 static struct perf_header *header;
 static u64              sample_type;
 
@@ -32,9 +29,7 @@ static int		cwdlen;
 static int
 process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
-
-        thread = threads__findnew(event->comm.pid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->comm.pid);
 
         dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
                 (void *)(offset + head),
@@ -54,14 +49,12 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head)
 static int
 process_sample_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct thread *thread;
         u64 ip = event->ip.ip;
         u64 timestamp = -1;
         u32 cpu = -1;
         u64 period = 1;
         void *more_data = event->ip.__more_data;
-
-        thread = threads__findnew(event->ip.pid, &threads, &last_match);
+        struct thread *thread = threads__findnew(event->ip.pid);
 
         if (sample_type & PERF_SAMPLE_TIME) {
                 timestamp = *(u64 *)more_data;
@@ -135,7 +128,7 @@ static struct perf_file_handler file_handler = {
 
 static int __cmd_trace(void)
 {
-        register_idle_thread(&threads, &last_match);
+        register_idle_thread();
         register_perf_file_handler(&file_handler);
 
         return mmap_dispatch_perf_file(&header, input_name, 0, 0, &cwdlen, &cwd);
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 3b56aebb1f4b..f53fad7c0a8d 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -6,6 +6,9 @@
 #include "util.h"
 #include "debug.h"
 
+static struct rb_root threads;
+static struct thread *last_match;
+
 static struct thread *thread__new(pid_t pid)
 {
         struct thread *self = calloc(1, sizeof(*self));
@@ -50,10 +53,9 @@ static size_t thread__fprintf(struct thread *self, FILE *fp)
         return ret;
 }
 
-struct thread *
-threads__findnew(pid_t pid, struct rb_root *threads, struct thread **last_match)
+struct thread *threads__findnew(pid_t pid)
 {
-        struct rb_node **p = &threads->rb_node;
+        struct rb_node **p = &threads.rb_node;
         struct rb_node *parent = NULL;
         struct thread *th;
 
@@ -62,15 +64,15 @@ threads__findnew(pid_t pid, struct rb_root *threads, struct thread **last_match)
          * so most of the time we dont have to look up
          * the full rbtree:
          */
-        if (*last_match && (*last_match)->pid == pid)
-                return *last_match;
+        if (last_match && last_match->pid == pid)
+                return last_match;
 
         while (*p != NULL) {
                 parent = *p;
                 th = rb_entry(parent, struct thread, rb_node);
 
                 if (th->pid == pid) {
-                        *last_match = th;
+                        last_match = th;
                         return th;
                 }
 
@@ -83,17 +85,16 @@ threads__findnew(pid_t pid, struct rb_root *threads, struct thread **last_match)
         th = thread__new(pid);
         if (th != NULL) {
                 rb_link_node(&th->rb_node, parent, p);
-                rb_insert_color(&th->rb_node, threads);
-                *last_match = th;
+                rb_insert_color(&th->rb_node, &threads);
+                last_match = th;
         }
 
         return th;
 }
 
-struct thread *
-register_idle_thread(struct rb_root *threads, struct thread **last_match)
+struct thread *register_idle_thread(void)
 {
-        struct thread *thread = threads__findnew(0, threads, last_match);
+        struct thread *thread = threads__findnew(0);
 
         if (!thread || thread__set_comm(thread, "swapper")) {
                 fprintf(stderr, "problem inserting idle task.\n");
@@ -197,12 +198,12 @@ int thread__fork(struct thread *self, struct thread *parent)
         return 0;
 }
 
-size_t threads__fprintf(FILE *fp, struct rb_root *threads)
+size_t threads__fprintf(FILE *fp)
 {
         size_t ret = 0;
         struct rb_node *nd;
 
-        for (nd = rb_first(threads); nd; nd = rb_next(nd)) {
+        for (nd = rb_first(&threads); nd; nd = rb_next(nd)) {
                 struct thread *pos = rb_entry(nd, struct thread, rb_node);
 
                 ret += thread__fprintf(pos, fp);
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 845d9b62f96f..1abef3b7455d 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -15,13 +15,11 @@ struct thread {
 };
 
 int thread__set_comm(struct thread *self, const char *comm);
-struct thread *
-threads__findnew(pid_t pid, struct rb_root *threads, struct thread **last_match);
-struct thread *
-register_idle_thread(struct rb_root *threads, struct thread **last_match);
+struct thread *threads__findnew(pid_t pid);
+struct thread *register_idle_thread(void);
 void thread__insert_map(struct thread *self, struct map *map);
 int thread__fork(struct thread *self, struct thread *parent);
-size_t threads__fprintf(FILE *fp, struct rb_root *threads);
+size_t threads__fprintf(FILE *fp);
 
 void maps__insert(struct rb_root *maps, struct map *map);
 struct map *maps__find(struct rb_root *maps, u64 ip);