perf timechart: Move all_data per_pid list to 'struct timechart'

Removing another global variable.

This one tho would be better done by using the machine infrastructure,
searching for the 'struct thread' with a pid, then using thread->priv,
etc.

TODO list material for now.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stanislav Fomichev <stfomichev@yandex-team.ru>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-yyfpudgjvr6mev4bue9u72a2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 59 insertions, 54 deletions

diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index e2d62f1a96e4..0c955acc08a2 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -41,8 +41,11 @@
 #define SUPPORT_OLD_POWER_EVENTS 1
 #define PWR_EVENT_EXIT -1
 
+struct per_pid;
+
 struct timechart {
         struct perf_tool        tool;
+        struct per_pid          *all_data;
         int                     proc_num;
         unsigned int            numcpus;
         u64                     min_freq,       /* Lowest CPU frequency seen */
@@ -123,8 +126,6 @@ struct cpu_sample {
         const char *backtrace;
 };
 
-static struct per_pid *all_data;
-
 #define CSTATE 1
 #define PSTATE 2
 
@@ -157,9 +158,9 @@ struct process_filter {
 static struct process_filter *process_filter;
 
 
-static struct per_pid *find_create_pid(int pid)
+static struct per_pid *find_create_pid(struct timechart *tchart, int pid)
 {
-        struct per_pid *cursor = all_data;
+        struct per_pid *cursor = tchart->all_data;
 
         while (cursor) {
                 if (cursor->pid == pid)
@@ -169,16 +170,16 @@ static struct per_pid *find_create_pid(int pid)
         cursor = zalloc(sizeof(*cursor));
         assert(cursor != NULL);
         cursor->pid = pid;
-        cursor->next = all_data;
-        all_data = cursor;
+        cursor->next = tchart->all_data;
+        tchart->all_data = cursor;
         return cursor;
 }
 
-static void pid_set_comm(int pid, char *comm)
+static void pid_set_comm(struct timechart *tchart, int pid, char *comm)
 {
         struct per_pid *p;
         struct per_pidcomm *c;
-        p = find_create_pid(pid);
+        p = find_create_pid(tchart, pid);
         c = p->all;
         while (c) {
                 if (c->comm && strcmp(c->comm, comm) == 0) {
@@ -200,14 +201,14 @@ static void pid_set_comm(int pid, char *comm)
         p->all = c;
 }
 
-static void pid_fork(int pid, int ppid, u64 timestamp)
+static void pid_fork(struct timechart *tchart, int pid, int ppid, u64 timestamp)
 {
         struct per_pid *p, *pp;
-        p = find_create_pid(pid);
-        pp = find_create_pid(ppid);
+        p = find_create_pid(tchart, pid);
+        pp = find_create_pid(tchart, ppid);
         p->ppid = ppid;
         if (pp->current && pp->current->comm && !p->current)
-                pid_set_comm(pid, pp->current->comm);
+                pid_set_comm(tchart, pid, pp->current->comm);
 
         p->start_time = timestamp;
         if (p->current) {
@@ -216,24 +217,24 @@ static void pid_fork(int pid, int ppid, u64 timestamp)
         }
 }
 
-static void pid_exit(int pid, u64 timestamp)
+static void pid_exit(struct timechart *tchart, int pid, u64 timestamp)
 {
         struct per_pid *p;
-        p = find_create_pid(pid);
+        p = find_create_pid(tchart, pid);
         p->end_time = timestamp;
         if (p->current)
                 p->current->end_time = timestamp;
 }
 
-static void
-pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end,
-               const char *backtrace)
+static void pid_put_sample(struct timechart *tchart, int pid, int type,
+                           unsigned int cpu, u64 start, u64 end,
+                           const char *backtrace)
 {
         struct per_pid *p;
         struct per_pidcomm *c;
         struct cpu_sample *sample;
 
-        p = find_create_pid(pid);
+        p = find_create_pid(tchart, pid);
         c = p->current;
         if (!c) {
                 c = zalloc(sizeof(*c));
@@ -271,30 +272,33 @@ static int cpus_cstate_state[MAX_CPUS];
 static u64 cpus_pstate_start_times[MAX_CPUS];
 static u64 cpus_pstate_state[MAX_CPUS];
 
-static int process_comm_event(struct perf_tool *tool __maybe_unused,
+static int process_comm_event(struct perf_tool *tool,
                               union perf_event *event,
                               struct perf_sample *sample __maybe_unused,
                               struct machine *machine __maybe_unused)
 {
-        pid_set_comm(event->comm.tid, event->comm.comm);
+        struct timechart *tchart = container_of(tool, struct timechart, tool);
+        pid_set_comm(tchart, event->comm.tid, event->comm.comm);
         return 0;
 }
 
-static int process_fork_event(struct perf_tool *tool __maybe_unused,
+static int process_fork_event(struct perf_tool *tool,
                               union perf_event *event,
                               struct perf_sample *sample __maybe_unused,
                               struct machine *machine __maybe_unused)
 {
-        pid_fork(event->fork.pid, event->fork.ppid, event->fork.time);
+        struct timechart *tchart = container_of(tool, struct timechart, tool);
+        pid_fork(tchart, event->fork.pid, event->fork.ppid, event->fork.time);
         return 0;
 }
 
-static int process_exit_event(struct perf_tool *tool __maybe_unused,
+static int process_exit_event(struct perf_tool *tool,
                               union perf_event *event,
                               struct perf_sample *sample __maybe_unused,
                               struct machine *machine __maybe_unused)
 {
-        pid_exit(event->fork.pid, event->fork.time);
+        struct timechart *tchart = container_of(tool, struct timechart, tool);
+        pid_exit(tchart, event->fork.pid, event->fork.time);
         return 0;
 }
 
@@ -361,8 +365,8 @@ static void p_state_change(struct timechart *tchart, int cpu, u64 timestamp, u64
                 tchart->turbo_frequency = tchart->max_freq;
 }
 
-static void sched_wakeup(int cpu, u64 timestamp, int waker, int wakee,
-                         u8 flags, const char *backtrace)
+static void sched_wakeup(struct timechart *tchart, int cpu, u64 timestamp,
+                         int waker, int wakee, u8 flags, const char *backtrace)
 {
         struct per_pid *p;
         struct wake_event *we = zalloc(sizeof(*we));
@@ -380,36 +384,37 @@ static void sched_wakeup(int cpu, u64 timestamp, int waker, int wakee,
         we->wakee = wakee;
         we->next = wake_events;
         wake_events = we;
-        p = find_create_pid(we->wakee);
+        p = find_create_pid(tchart, we->wakee);
 
         if (p && p->current && p->current->state == TYPE_NONE) {
                 p->current->state_since = timestamp;
                 p->current->state = TYPE_WAITING;
         }
         if (p && p->current && p->current->state == TYPE_BLOCKED) {
-                pid_put_sample(p->pid, p->current->state, cpu,
+                pid_put_sample(tchart, p->pid, p->current->state, cpu,
                                p->current->state_since, timestamp, NULL);
                 p->current->state_since = timestamp;
                 p->current->state = TYPE_WAITING;
         }
 }
 
-static void sched_switch(int cpu, u64 timestamp, int prev_pid, int next_pid,
-                         u64 prev_state, const char *backtrace)
+static void sched_switch(struct timechart *tchart, int cpu, u64 timestamp,
+                         int prev_pid, int next_pid, u64 prev_state,
+                         const char *backtrace)
 {
         struct per_pid *p = NULL, *prev_p;
 
-        prev_p = find_create_pid(prev_pid);
+        prev_p = find_create_pid(tchart, prev_pid);
 
-        p = find_create_pid(next_pid);
+        p = find_create_pid(tchart, next_pid);
 
         if (prev_p->current && prev_p->current->state != TYPE_NONE)
-                pid_put_sample(prev_pid, TYPE_RUNNING, cpu,
+                pid_put_sample(tchart, prev_pid, TYPE_RUNNING, cpu,
                                prev_p->current->state_since, timestamp,
                                backtrace);
         if (p && p->current) {
                 if (p->current->state != TYPE_NONE)
-                        pid_put_sample(next_pid, p->current->state, cpu,
+                        pid_put_sample(tchart, next_pid, p->current->state, cpu,
                                        p->current->state_since, timestamp,
                                        backtrace);
 
@@ -566,7 +571,7 @@ process_sample_cpu_frequency(struct timechart *tchart,
 }
 
 static int
-process_sample_sched_wakeup(struct timechart *tchart __maybe_unused,
+process_sample_sched_wakeup(struct timechart *tchart,
                             struct perf_evsel *evsel,
                             struct perf_sample *sample,
                             const char *backtrace)
@@ -575,12 +580,12 @@ process_sample_sched_wakeup(struct timechart *tchart __maybe_unused,
         int waker = perf_evsel__intval(evsel, sample, "common_pid");
         int wakee = perf_evsel__intval(evsel, sample, "pid");
 
-        sched_wakeup(sample->cpu, sample->time, waker, wakee, flags, backtrace);
+        sched_wakeup(tchart, sample->cpu, sample->time, waker, wakee, flags, backtrace);
         return 0;
 }
 
 static int
-process_sample_sched_switch(struct timechart *tchart __maybe_unused,
+process_sample_sched_switch(struct timechart *tchart,
                             struct perf_evsel *evsel,
                             struct perf_sample *sample,
                             const char *backtrace)
@@ -589,8 +594,8 @@ process_sample_sched_switch(struct timechart *tchart __maybe_unused,
         int next_pid = perf_evsel__intval(evsel, sample, "next_pid");
         u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state");
 
-        sched_switch(sample->cpu, sample->time, prev_pid, next_pid, prev_state,
-                     backtrace);
+        sched_switch(tchart, sample->cpu, sample->time, prev_pid, next_pid,
+                     prev_state, backtrace);
         return 0;
 }
 
@@ -681,16 +686,16 @@ static void end_sample_processing(struct timechart *tchart)
 /*
  * Sort the pid datastructure
  */
-static void sort_pids(void)
+static void sort_pids(struct timechart *tchart)
 {
         struct per_pid *new_list, *p, *cursor, *prev;
         /* sort by ppid first, then by pid, lowest to highest */
 
         new_list = NULL;
 
-        while (all_data) {
-                p = all_data;
-                all_data = p->next;
+        while (tchart->all_data) {
+                p = tchart->all_data;
+                tchart->all_data = p->next;
                 p->next = NULL;
 
                 if (new_list == NULL) {
@@ -723,7 +728,7 @@ static void sort_pids(void)
                                 prev->next = p;
                 }
         }
-        all_data = new_list;
+        tchart->all_data = new_list;
 }
 
 
@@ -752,7 +757,7 @@ static void draw_c_p_states(struct timechart *tchart)
         }
 }
 
-static void draw_wakeups(void)
+static void draw_wakeups(struct timechart *tchart)
 {
         struct wake_event *we;
         struct per_pid *p;
@@ -764,7 +769,7 @@ static void draw_wakeups(void)
                 char *task_from = NULL, *task_to = NULL;
 
                 /* locate the column of the waker and wakee */
-                p = all_data;
+                p = tchart->all_data;
                 while (p) {
                         if (p->pid == we->waker || p->pid == we->wakee) {
                                 c = p->all;
@@ -820,12 +825,12 @@ static void draw_wakeups(void)
         }
 }
 
-static void draw_cpu_usage(void)
+static void draw_cpu_usage(struct timechart *tchart)
 {
         struct per_pid *p;
         struct per_pidcomm *c;
         struct cpu_sample *sample;
-        p = all_data;
+        p = tchart->all_data;
         while (p) {
                 c = p->all;
                 while (c) {
@@ -851,7 +856,7 @@ static void draw_process_bars(struct timechart *tchart)
 
         Y = 2 * tchart->numcpus + 2;
 
-        p = all_data;
+        p = tchart->all_data;
         while (p) {
                 c = p->all;
                 while (c) {
@@ -937,7 +942,7 @@ static int determine_display_tasks_filtered(struct timechart *tchart)
         struct per_pidcomm *c;
         int count = 0;
 
-        p = all_data;
+        p = tchart->all_data;
         while (p) {
                 p->display = 0;
                 if (p->start_time == 1)
@@ -980,7 +985,7 @@ static int determine_display_tasks(struct timechart *tchart, u64 threshold)
         if (process_filter)
                 return determine_display_tasks_filtered(tchart);
 
-        p = all_data;
+        p = tchart->all_data;
         while (p) {
                 p->display = 0;
                 if (p->start_time == 1)
@@ -1045,13 +1050,13 @@ static void write_svg_file(struct timechart *tchart, const char *filename)
         for (i = 0; i < tchart->numcpus; i++)
                 svg_cpu_box(i, tchart->max_freq, tchart->turbo_frequency);
 
-        draw_cpu_usage();
+        draw_cpu_usage(tchart);
         if (tchart->proc_num)
                 draw_process_bars(tchart);
         if (!tchart->tasks_only)
                 draw_c_p_states(tchart);
         if (tchart->proc_num)
-                draw_wakeups();
+                draw_wakeups(tchart);
 
         svg_close();
 }
@@ -1096,7 +1101,7 @@ static int __cmd_timechart(struct timechart *tchart, const char *output_name)
 
         end_sample_processing(tchart);
 
-        sort_pids();
+        sort_pids(tchart);
 
         write_svg_file(tchart, output_name);