![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
Resolving the sample->id to an evsel since the most advanced tools, report and annotate, and the others will too when they evolve to properly support multi-event perf.data files. Good also because it does an extra validation, checking that the ID is valid when present. When that is not the case, the overhead is just a branch + function call (perf_evlist__id2evsel). 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>
1119 lines
23 KiB
C
1119 lines
23 KiB
C
/*
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* builtin-timechart.c - make an svg timechart of system activity
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*
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* (C) Copyright 2009 Intel Corporation
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*
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* Authors:
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* Arjan van de Ven <arjan@linux.intel.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; version 2
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* of the License.
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*/
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#include "builtin.h"
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#include "util/util.h"
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#include "util/color.h"
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#include <linux/list.h>
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#include "util/cache.h"
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#include <linux/rbtree.h>
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#include "util/symbol.h"
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#include "util/callchain.h"
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#include "util/strlist.h"
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#include "perf.h"
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#include "util/header.h"
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#include "util/parse-options.h"
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#include "util/parse-events.h"
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#include "util/event.h"
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#include "util/session.h"
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#include "util/svghelper.h"
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#define SUPPORT_OLD_POWER_EVENTS 1
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#define PWR_EVENT_EXIT -1
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static char const *input_name = "perf.data";
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static char const *output_name = "output.svg";
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static unsigned int numcpus;
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static u64 min_freq; /* Lowest CPU frequency seen */
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static u64 max_freq; /* Highest CPU frequency seen */
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static u64 turbo_frequency;
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static u64 first_time, last_time;
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static bool power_only;
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struct per_pid;
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struct per_pidcomm;
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struct cpu_sample;
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struct power_event;
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struct wake_event;
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struct sample_wrapper;
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/*
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* Datastructure layout:
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* We keep an list of "pid"s, matching the kernels notion of a task struct.
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* Each "pid" entry, has a list of "comm"s.
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* this is because we want to track different programs different, while
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* exec will reuse the original pid (by design).
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* Each comm has a list of samples that will be used to draw
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* final graph.
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*/
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struct per_pid {
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struct per_pid *next;
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int pid;
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int ppid;
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u64 start_time;
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u64 end_time;
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u64 total_time;
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int display;
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struct per_pidcomm *all;
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struct per_pidcomm *current;
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};
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struct per_pidcomm {
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struct per_pidcomm *next;
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u64 start_time;
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u64 end_time;
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u64 total_time;
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int Y;
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int display;
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long state;
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u64 state_since;
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char *comm;
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struct cpu_sample *samples;
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};
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struct sample_wrapper {
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struct sample_wrapper *next;
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u64 timestamp;
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unsigned char data[0];
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};
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#define TYPE_NONE 0
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#define TYPE_RUNNING 1
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#define TYPE_WAITING 2
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#define TYPE_BLOCKED 3
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struct cpu_sample {
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struct cpu_sample *next;
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u64 start_time;
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u64 end_time;
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int type;
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int cpu;
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};
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static struct per_pid *all_data;
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#define CSTATE 1
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#define PSTATE 2
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struct power_event {
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struct power_event *next;
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int type;
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int state;
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u64 start_time;
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u64 end_time;
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int cpu;
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};
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struct wake_event {
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struct wake_event *next;
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int waker;
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int wakee;
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u64 time;
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};
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static struct power_event *power_events;
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static struct wake_event *wake_events;
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struct process_filter;
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struct process_filter {
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char *name;
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int pid;
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struct process_filter *next;
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};
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static struct process_filter *process_filter;
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static struct per_pid *find_create_pid(int pid)
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{
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struct per_pid *cursor = all_data;
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while (cursor) {
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if (cursor->pid == pid)
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return cursor;
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cursor = cursor->next;
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}
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cursor = malloc(sizeof(struct per_pid));
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assert(cursor != NULL);
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memset(cursor, 0, sizeof(struct per_pid));
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cursor->pid = pid;
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cursor->next = all_data;
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all_data = cursor;
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return cursor;
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}
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static void pid_set_comm(int pid, char *comm)
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{
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struct per_pid *p;
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struct per_pidcomm *c;
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p = find_create_pid(pid);
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c = p->all;
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while (c) {
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if (c->comm && strcmp(c->comm, comm) == 0) {
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p->current = c;
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return;
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}
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if (!c->comm) {
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c->comm = strdup(comm);
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p->current = c;
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return;
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}
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c = c->next;
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}
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c = malloc(sizeof(struct per_pidcomm));
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assert(c != NULL);
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memset(c, 0, sizeof(struct per_pidcomm));
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c->comm = strdup(comm);
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p->current = c;
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c->next = p->all;
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p->all = c;
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}
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static void pid_fork(int pid, int ppid, u64 timestamp)
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{
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struct per_pid *p, *pp;
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p = find_create_pid(pid);
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pp = find_create_pid(ppid);
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p->ppid = ppid;
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if (pp->current && pp->current->comm && !p->current)
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pid_set_comm(pid, pp->current->comm);
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p->start_time = timestamp;
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if (p->current) {
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p->current->start_time = timestamp;
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p->current->state_since = timestamp;
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}
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}
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static void pid_exit(int pid, u64 timestamp)
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{
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struct per_pid *p;
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p = find_create_pid(pid);
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p->end_time = timestamp;
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if (p->current)
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p->current->end_time = timestamp;
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}
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static void
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pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end)
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{
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struct per_pid *p;
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struct per_pidcomm *c;
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struct cpu_sample *sample;
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p = find_create_pid(pid);
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c = p->current;
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if (!c) {
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c = malloc(sizeof(struct per_pidcomm));
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assert(c != NULL);
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memset(c, 0, sizeof(struct per_pidcomm));
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p->current = c;
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c->next = p->all;
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p->all = c;
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}
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sample = malloc(sizeof(struct cpu_sample));
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assert(sample != NULL);
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memset(sample, 0, sizeof(struct cpu_sample));
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sample->start_time = start;
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sample->end_time = end;
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sample->type = type;
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sample->next = c->samples;
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sample->cpu = cpu;
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c->samples = sample;
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if (sample->type == TYPE_RUNNING && end > start && start > 0) {
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c->total_time += (end-start);
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p->total_time += (end-start);
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}
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if (c->start_time == 0 || c->start_time > start)
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c->start_time = start;
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if (p->start_time == 0 || p->start_time > start)
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p->start_time = start;
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}
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#define MAX_CPUS 4096
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static u64 cpus_cstate_start_times[MAX_CPUS];
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static int cpus_cstate_state[MAX_CPUS];
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static u64 cpus_pstate_start_times[MAX_CPUS];
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static u64 cpus_pstate_state[MAX_CPUS];
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static int process_comm_event(union perf_event *event,
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struct perf_sample *sample __used,
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struct perf_session *session __used)
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{
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pid_set_comm(event->comm.tid, event->comm.comm);
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return 0;
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}
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static int process_fork_event(union perf_event *event,
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struct perf_sample *sample __used,
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struct perf_session *session __used)
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{
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pid_fork(event->fork.pid, event->fork.ppid, event->fork.time);
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return 0;
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}
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static int process_exit_event(union perf_event *event,
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struct perf_sample *sample __used,
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struct perf_session *session __used)
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{
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pid_exit(event->fork.pid, event->fork.time);
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return 0;
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}
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struct trace_entry {
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unsigned short type;
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unsigned char flags;
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unsigned char preempt_count;
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int pid;
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int lock_depth;
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};
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#ifdef SUPPORT_OLD_POWER_EVENTS
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static int use_old_power_events;
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struct power_entry_old {
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struct trace_entry te;
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u64 type;
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u64 value;
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u64 cpu_id;
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};
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#endif
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struct power_processor_entry {
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struct trace_entry te;
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u32 state;
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u32 cpu_id;
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};
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#define TASK_COMM_LEN 16
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struct wakeup_entry {
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struct trace_entry te;
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char comm[TASK_COMM_LEN];
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int pid;
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int prio;
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int success;
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};
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/*
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* trace_flag_type is an enumeration that holds different
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* states when a trace occurs. These are:
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* IRQS_OFF - interrupts were disabled
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* IRQS_NOSUPPORT - arch does not support irqs_disabled_flags
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* NEED_RESCED - reschedule is requested
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* HARDIRQ - inside an interrupt handler
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* SOFTIRQ - inside a softirq handler
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*/
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enum trace_flag_type {
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TRACE_FLAG_IRQS_OFF = 0x01,
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TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
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TRACE_FLAG_NEED_RESCHED = 0x04,
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TRACE_FLAG_HARDIRQ = 0x08,
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TRACE_FLAG_SOFTIRQ = 0x10,
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};
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struct sched_switch {
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struct trace_entry te;
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char prev_comm[TASK_COMM_LEN];
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int prev_pid;
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int prev_prio;
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long prev_state; /* Arjan weeps. */
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char next_comm[TASK_COMM_LEN];
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int next_pid;
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int next_prio;
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};
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static void c_state_start(int cpu, u64 timestamp, int state)
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{
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cpus_cstate_start_times[cpu] = timestamp;
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cpus_cstate_state[cpu] = state;
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}
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static void c_state_end(int cpu, u64 timestamp)
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{
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struct power_event *pwr;
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pwr = malloc(sizeof(struct power_event));
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if (!pwr)
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return;
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memset(pwr, 0, sizeof(struct power_event));
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pwr->state = cpus_cstate_state[cpu];
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pwr->start_time = cpus_cstate_start_times[cpu];
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pwr->end_time = timestamp;
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pwr->cpu = cpu;
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pwr->type = CSTATE;
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pwr->next = power_events;
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power_events = pwr;
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}
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static void p_state_change(int cpu, u64 timestamp, u64 new_freq)
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{
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struct power_event *pwr;
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pwr = malloc(sizeof(struct power_event));
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if (new_freq > 8000000) /* detect invalid data */
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return;
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if (!pwr)
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return;
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memset(pwr, 0, sizeof(struct power_event));
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pwr->state = cpus_pstate_state[cpu];
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pwr->start_time = cpus_pstate_start_times[cpu];
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pwr->end_time = timestamp;
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pwr->cpu = cpu;
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pwr->type = PSTATE;
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pwr->next = power_events;
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if (!pwr->start_time)
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pwr->start_time = first_time;
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power_events = pwr;
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cpus_pstate_state[cpu] = new_freq;
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cpus_pstate_start_times[cpu] = timestamp;
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if ((u64)new_freq > max_freq)
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max_freq = new_freq;
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if (new_freq < min_freq || min_freq == 0)
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min_freq = new_freq;
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if (new_freq == max_freq - 1000)
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turbo_frequency = max_freq;
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}
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static void
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sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
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{
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struct wake_event *we;
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struct per_pid *p;
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struct wakeup_entry *wake = (void *)te;
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we = malloc(sizeof(struct wake_event));
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if (!we)
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return;
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memset(we, 0, sizeof(struct wake_event));
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we->time = timestamp;
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we->waker = pid;
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if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
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we->waker = -1;
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we->wakee = wake->pid;
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we->next = wake_events;
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wake_events = we;
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p = find_create_pid(we->wakee);
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if (p && p->current && p->current->state == TYPE_NONE) {
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p->current->state_since = timestamp;
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p->current->state = TYPE_WAITING;
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}
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if (p && p->current && p->current->state == TYPE_BLOCKED) {
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pid_put_sample(p->pid, p->current->state, cpu, p->current->state_since, timestamp);
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p->current->state_since = timestamp;
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p->current->state = TYPE_WAITING;
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}
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}
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static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
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{
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struct per_pid *p = NULL, *prev_p;
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struct sched_switch *sw = (void *)te;
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prev_p = find_create_pid(sw->prev_pid);
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p = find_create_pid(sw->next_pid);
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if (prev_p->current && prev_p->current->state != TYPE_NONE)
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pid_put_sample(sw->prev_pid, TYPE_RUNNING, cpu, prev_p->current->state_since, timestamp);
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if (p && p->current) {
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if (p->current->state != TYPE_NONE)
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pid_put_sample(sw->next_pid, p->current->state, cpu, p->current->state_since, timestamp);
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p->current->state_since = timestamp;
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p->current->state = TYPE_RUNNING;
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}
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if (prev_p->current) {
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prev_p->current->state = TYPE_NONE;
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prev_p->current->state_since = timestamp;
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if (sw->prev_state & 2)
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prev_p->current->state = TYPE_BLOCKED;
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if (sw->prev_state == 0)
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prev_p->current->state = TYPE_WAITING;
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}
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}
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static int process_sample_event(union perf_event *event __used,
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struct perf_sample *sample,
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struct perf_evsel *evsel __used,
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struct perf_session *session)
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{
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struct trace_entry *te;
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if (session->sample_type & PERF_SAMPLE_TIME) {
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if (!first_time || first_time > sample->time)
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first_time = sample->time;
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if (last_time < sample->time)
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last_time = sample->time;
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}
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te = (void *)sample->raw_data;
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if (session->sample_type & PERF_SAMPLE_RAW && sample->raw_size > 0) {
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char *event_str;
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#ifdef SUPPORT_OLD_POWER_EVENTS
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struct power_entry_old *peo;
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peo = (void *)te;
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#endif
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/*
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* FIXME: use evsel, its already mapped from id to perf_evsel,
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* remove perf_header__find_event infrastructure bits.
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* Mapping all these "power:cpu_idle" strings to the tracepoint
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* ID and then just comparing against evsel->attr.config.
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*
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* e.g.:
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*
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* if (evsel->attr.config == power_cpu_idle_id)
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*/
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event_str = perf_header__find_event(te->type);
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if (!event_str)
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return 0;
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if (sample->cpu > numcpus)
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numcpus = sample->cpu;
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if (strcmp(event_str, "power:cpu_idle") == 0) {
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struct power_processor_entry *ppe = (void *)te;
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if (ppe->state == (u32)PWR_EVENT_EXIT)
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c_state_end(ppe->cpu_id, sample->time);
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else
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c_state_start(ppe->cpu_id, sample->time,
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ppe->state);
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}
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else if (strcmp(event_str, "power:cpu_frequency") == 0) {
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struct power_processor_entry *ppe = (void *)te;
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p_state_change(ppe->cpu_id, sample->time, ppe->state);
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}
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else if (strcmp(event_str, "sched:sched_wakeup") == 0)
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sched_wakeup(sample->cpu, sample->time, sample->pid, te);
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else if (strcmp(event_str, "sched:sched_switch") == 0)
|
|
sched_switch(sample->cpu, sample->time, te);
|
|
|
|
#ifdef SUPPORT_OLD_POWER_EVENTS
|
|
if (use_old_power_events) {
|
|
if (strcmp(event_str, "power:power_start") == 0)
|
|
c_state_start(peo->cpu_id, sample->time,
|
|
peo->value);
|
|
|
|
else if (strcmp(event_str, "power:power_end") == 0)
|
|
c_state_end(sample->cpu, sample->time);
|
|
|
|
else if (strcmp(event_str,
|
|
"power:power_frequency") == 0)
|
|
p_state_change(peo->cpu_id, sample->time,
|
|
peo->value);
|
|
}
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* After the last sample we need to wrap up the current C/P state
|
|
* and close out each CPU for these.
|
|
*/
|
|
static void end_sample_processing(void)
|
|
{
|
|
u64 cpu;
|
|
struct power_event *pwr;
|
|
|
|
for (cpu = 0; cpu <= numcpus; cpu++) {
|
|
pwr = malloc(sizeof(struct power_event));
|
|
if (!pwr)
|
|
return;
|
|
memset(pwr, 0, sizeof(struct power_event));
|
|
|
|
/* C state */
|
|
#if 0
|
|
pwr->state = cpus_cstate_state[cpu];
|
|
pwr->start_time = cpus_cstate_start_times[cpu];
|
|
pwr->end_time = last_time;
|
|
pwr->cpu = cpu;
|
|
pwr->type = CSTATE;
|
|
pwr->next = power_events;
|
|
|
|
power_events = pwr;
|
|
#endif
|
|
/* P state */
|
|
|
|
pwr = malloc(sizeof(struct power_event));
|
|
if (!pwr)
|
|
return;
|
|
memset(pwr, 0, sizeof(struct power_event));
|
|
|
|
pwr->state = cpus_pstate_state[cpu];
|
|
pwr->start_time = cpus_pstate_start_times[cpu];
|
|
pwr->end_time = last_time;
|
|
pwr->cpu = cpu;
|
|
pwr->type = PSTATE;
|
|
pwr->next = power_events;
|
|
|
|
if (!pwr->start_time)
|
|
pwr->start_time = first_time;
|
|
if (!pwr->state)
|
|
pwr->state = min_freq;
|
|
power_events = pwr;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Sort the pid datastructure
|
|
*/
|
|
static void sort_pids(void)
|
|
{
|
|
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;
|
|
p->next = NULL;
|
|
|
|
if (new_list == NULL) {
|
|
new_list = p;
|
|
p->next = NULL;
|
|
continue;
|
|
}
|
|
prev = NULL;
|
|
cursor = new_list;
|
|
while (cursor) {
|
|
if (cursor->ppid > p->ppid ||
|
|
(cursor->ppid == p->ppid && cursor->pid > p->pid)) {
|
|
/* must insert before */
|
|
if (prev) {
|
|
p->next = prev->next;
|
|
prev->next = p;
|
|
cursor = NULL;
|
|
continue;
|
|
} else {
|
|
p->next = new_list;
|
|
new_list = p;
|
|
cursor = NULL;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
prev = cursor;
|
|
cursor = cursor->next;
|
|
if (!cursor)
|
|
prev->next = p;
|
|
}
|
|
}
|
|
all_data = new_list;
|
|
}
|
|
|
|
|
|
static void draw_c_p_states(void)
|
|
{
|
|
struct power_event *pwr;
|
|
pwr = power_events;
|
|
|
|
/*
|
|
* two pass drawing so that the P state bars are on top of the C state blocks
|
|
*/
|
|
while (pwr) {
|
|
if (pwr->type == CSTATE)
|
|
svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
|
|
pwr = pwr->next;
|
|
}
|
|
|
|
pwr = power_events;
|
|
while (pwr) {
|
|
if (pwr->type == PSTATE) {
|
|
if (!pwr->state)
|
|
pwr->state = min_freq;
|
|
svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
|
|
}
|
|
pwr = pwr->next;
|
|
}
|
|
}
|
|
|
|
static void draw_wakeups(void)
|
|
{
|
|
struct wake_event *we;
|
|
struct per_pid *p;
|
|
struct per_pidcomm *c;
|
|
|
|
we = wake_events;
|
|
while (we) {
|
|
int from = 0, to = 0;
|
|
char *task_from = NULL, *task_to = NULL;
|
|
|
|
/* locate the column of the waker and wakee */
|
|
p = all_data;
|
|
while (p) {
|
|
if (p->pid == we->waker || p->pid == we->wakee) {
|
|
c = p->all;
|
|
while (c) {
|
|
if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
|
|
if (p->pid == we->waker && !from) {
|
|
from = c->Y;
|
|
task_from = strdup(c->comm);
|
|
}
|
|
if (p->pid == we->wakee && !to) {
|
|
to = c->Y;
|
|
task_to = strdup(c->comm);
|
|
}
|
|
}
|
|
c = c->next;
|
|
}
|
|
c = p->all;
|
|
while (c) {
|
|
if (p->pid == we->waker && !from) {
|
|
from = c->Y;
|
|
task_from = strdup(c->comm);
|
|
}
|
|
if (p->pid == we->wakee && !to) {
|
|
to = c->Y;
|
|
task_to = strdup(c->comm);
|
|
}
|
|
c = c->next;
|
|
}
|
|
}
|
|
p = p->next;
|
|
}
|
|
|
|
if (!task_from) {
|
|
task_from = malloc(40);
|
|
sprintf(task_from, "[%i]", we->waker);
|
|
}
|
|
if (!task_to) {
|
|
task_to = malloc(40);
|
|
sprintf(task_to, "[%i]", we->wakee);
|
|
}
|
|
|
|
if (we->waker == -1)
|
|
svg_interrupt(we->time, to);
|
|
else if (from && to && abs(from - to) == 1)
|
|
svg_wakeline(we->time, from, to);
|
|
else
|
|
svg_partial_wakeline(we->time, from, task_from, to, task_to);
|
|
we = we->next;
|
|
|
|
free(task_from);
|
|
free(task_to);
|
|
}
|
|
}
|
|
|
|
static void draw_cpu_usage(void)
|
|
{
|
|
struct per_pid *p;
|
|
struct per_pidcomm *c;
|
|
struct cpu_sample *sample;
|
|
p = all_data;
|
|
while (p) {
|
|
c = p->all;
|
|
while (c) {
|
|
sample = c->samples;
|
|
while (sample) {
|
|
if (sample->type == TYPE_RUNNING)
|
|
svg_process(sample->cpu, sample->start_time, sample->end_time, "sample", c->comm);
|
|
|
|
sample = sample->next;
|
|
}
|
|
c = c->next;
|
|
}
|
|
p = p->next;
|
|
}
|
|
}
|
|
|
|
static void draw_process_bars(void)
|
|
{
|
|
struct per_pid *p;
|
|
struct per_pidcomm *c;
|
|
struct cpu_sample *sample;
|
|
int Y = 0;
|
|
|
|
Y = 2 * numcpus + 2;
|
|
|
|
p = all_data;
|
|
while (p) {
|
|
c = p->all;
|
|
while (c) {
|
|
if (!c->display) {
|
|
c->Y = 0;
|
|
c = c->next;
|
|
continue;
|
|
}
|
|
|
|
svg_box(Y, c->start_time, c->end_time, "process");
|
|
sample = c->samples;
|
|
while (sample) {
|
|
if (sample->type == TYPE_RUNNING)
|
|
svg_sample(Y, sample->cpu, sample->start_time, sample->end_time);
|
|
if (sample->type == TYPE_BLOCKED)
|
|
svg_box(Y, sample->start_time, sample->end_time, "blocked");
|
|
if (sample->type == TYPE_WAITING)
|
|
svg_waiting(Y, sample->start_time, sample->end_time);
|
|
sample = sample->next;
|
|
}
|
|
|
|
if (c->comm) {
|
|
char comm[256];
|
|
if (c->total_time > 5000000000) /* 5 seconds */
|
|
sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / 1000000000.0);
|
|
else
|
|
sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / 1000000.0);
|
|
|
|
svg_text(Y, c->start_time, comm);
|
|
}
|
|
c->Y = Y;
|
|
Y++;
|
|
c = c->next;
|
|
}
|
|
p = p->next;
|
|
}
|
|
}
|
|
|
|
static void add_process_filter(const char *string)
|
|
{
|
|
struct process_filter *filt;
|
|
int pid;
|
|
|
|
pid = strtoull(string, NULL, 10);
|
|
filt = malloc(sizeof(struct process_filter));
|
|
if (!filt)
|
|
return;
|
|
|
|
filt->name = strdup(string);
|
|
filt->pid = pid;
|
|
filt->next = process_filter;
|
|
|
|
process_filter = filt;
|
|
}
|
|
|
|
static int passes_filter(struct per_pid *p, struct per_pidcomm *c)
|
|
{
|
|
struct process_filter *filt;
|
|
if (!process_filter)
|
|
return 1;
|
|
|
|
filt = process_filter;
|
|
while (filt) {
|
|
if (filt->pid && p->pid == filt->pid)
|
|
return 1;
|
|
if (strcmp(filt->name, c->comm) == 0)
|
|
return 1;
|
|
filt = filt->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int determine_display_tasks_filtered(void)
|
|
{
|
|
struct per_pid *p;
|
|
struct per_pidcomm *c;
|
|
int count = 0;
|
|
|
|
p = all_data;
|
|
while (p) {
|
|
p->display = 0;
|
|
if (p->start_time == 1)
|
|
p->start_time = first_time;
|
|
|
|
/* no exit marker, task kept running to the end */
|
|
if (p->end_time == 0)
|
|
p->end_time = last_time;
|
|
|
|
c = p->all;
|
|
|
|
while (c) {
|
|
c->display = 0;
|
|
|
|
if (c->start_time == 1)
|
|
c->start_time = first_time;
|
|
|
|
if (passes_filter(p, c)) {
|
|
c->display = 1;
|
|
p->display = 1;
|
|
count++;
|
|
}
|
|
|
|
if (c->end_time == 0)
|
|
c->end_time = last_time;
|
|
|
|
c = c->next;
|
|
}
|
|
p = p->next;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static int determine_display_tasks(u64 threshold)
|
|
{
|
|
struct per_pid *p;
|
|
struct per_pidcomm *c;
|
|
int count = 0;
|
|
|
|
if (process_filter)
|
|
return determine_display_tasks_filtered();
|
|
|
|
p = all_data;
|
|
while (p) {
|
|
p->display = 0;
|
|
if (p->start_time == 1)
|
|
p->start_time = first_time;
|
|
|
|
/* no exit marker, task kept running to the end */
|
|
if (p->end_time == 0)
|
|
p->end_time = last_time;
|
|
if (p->total_time >= threshold && !power_only)
|
|
p->display = 1;
|
|
|
|
c = p->all;
|
|
|
|
while (c) {
|
|
c->display = 0;
|
|
|
|
if (c->start_time == 1)
|
|
c->start_time = first_time;
|
|
|
|
if (c->total_time >= threshold && !power_only) {
|
|
c->display = 1;
|
|
count++;
|
|
}
|
|
|
|
if (c->end_time == 0)
|
|
c->end_time = last_time;
|
|
|
|
c = c->next;
|
|
}
|
|
p = p->next;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
|
|
|
|
#define TIME_THRESH 10000000
|
|
|
|
static void write_svg_file(const char *filename)
|
|
{
|
|
u64 i;
|
|
int count;
|
|
|
|
numcpus++;
|
|
|
|
|
|
count = determine_display_tasks(TIME_THRESH);
|
|
|
|
/* We'd like to show at least 15 tasks; be less picky if we have fewer */
|
|
if (count < 15)
|
|
count = determine_display_tasks(TIME_THRESH / 10);
|
|
|
|
open_svg(filename, numcpus, count, first_time, last_time);
|
|
|
|
svg_time_grid();
|
|
svg_legenda();
|
|
|
|
for (i = 0; i < numcpus; i++)
|
|
svg_cpu_box(i, max_freq, turbo_frequency);
|
|
|
|
draw_cpu_usage();
|
|
draw_process_bars();
|
|
draw_c_p_states();
|
|
draw_wakeups();
|
|
|
|
svg_close();
|
|
}
|
|
|
|
static struct perf_event_ops event_ops = {
|
|
.comm = process_comm_event,
|
|
.fork = process_fork_event,
|
|
.exit = process_exit_event,
|
|
.sample = process_sample_event,
|
|
.ordered_samples = true,
|
|
};
|
|
|
|
static int __cmd_timechart(void)
|
|
{
|
|
struct perf_session *session = perf_session__new(input_name, O_RDONLY,
|
|
0, false, &event_ops);
|
|
int ret = -EINVAL;
|
|
|
|
if (session == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (!perf_session__has_traces(session, "timechart record"))
|
|
goto out_delete;
|
|
|
|
ret = perf_session__process_events(session, &event_ops);
|
|
if (ret)
|
|
goto out_delete;
|
|
|
|
end_sample_processing();
|
|
|
|
sort_pids();
|
|
|
|
write_svg_file(output_name);
|
|
|
|
pr_info("Written %2.1f seconds of trace to %s.\n",
|
|
(last_time - first_time) / 1000000000.0, output_name);
|
|
out_delete:
|
|
perf_session__delete(session);
|
|
return ret;
|
|
}
|
|
|
|
static const char * const timechart_usage[] = {
|
|
"perf timechart [<options>] {record}",
|
|
NULL
|
|
};
|
|
|
|
#ifdef SUPPORT_OLD_POWER_EVENTS
|
|
static const char * const record_old_args[] = {
|
|
"record",
|
|
"-a",
|
|
"-R",
|
|
"-f",
|
|
"-c", "1",
|
|
"-e", "power:power_start",
|
|
"-e", "power:power_end",
|
|
"-e", "power:power_frequency",
|
|
"-e", "sched:sched_wakeup",
|
|
"-e", "sched:sched_switch",
|
|
};
|
|
#endif
|
|
|
|
static const char * const record_new_args[] = {
|
|
"record",
|
|
"-a",
|
|
"-R",
|
|
"-f",
|
|
"-c", "1",
|
|
"-e", "power:cpu_frequency",
|
|
"-e", "power:cpu_idle",
|
|
"-e", "sched:sched_wakeup",
|
|
"-e", "sched:sched_switch",
|
|
};
|
|
|
|
static int __cmd_record(int argc, const char **argv)
|
|
{
|
|
unsigned int rec_argc, i, j;
|
|
const char **rec_argv;
|
|
const char * const *record_args = record_new_args;
|
|
unsigned int record_elems = ARRAY_SIZE(record_new_args);
|
|
|
|
#ifdef SUPPORT_OLD_POWER_EVENTS
|
|
if (!is_valid_tracepoint("power:cpu_idle") &&
|
|
is_valid_tracepoint("power:power_start")) {
|
|
use_old_power_events = 1;
|
|
record_args = record_old_args;
|
|
record_elems = ARRAY_SIZE(record_old_args);
|
|
}
|
|
#endif
|
|
|
|
rec_argc = record_elems + argc - 1;
|
|
rec_argv = calloc(rec_argc + 1, sizeof(char *));
|
|
|
|
if (rec_argv == NULL)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < record_elems; i++)
|
|
rec_argv[i] = strdup(record_args[i]);
|
|
|
|
for (j = 1; j < (unsigned int)argc; j++, i++)
|
|
rec_argv[i] = argv[j];
|
|
|
|
return cmd_record(i, rec_argv, NULL);
|
|
}
|
|
|
|
static int
|
|
parse_process(const struct option *opt __used, const char *arg, int __used unset)
|
|
{
|
|
if (arg)
|
|
add_process_filter(arg);
|
|
return 0;
|
|
}
|
|
|
|
static const struct option options[] = {
|
|
OPT_STRING('i', "input", &input_name, "file",
|
|
"input file name"),
|
|
OPT_STRING('o', "output", &output_name, "file",
|
|
"output file name"),
|
|
OPT_INTEGER('w', "width", &svg_page_width,
|
|
"page width"),
|
|
OPT_BOOLEAN('P', "power-only", &power_only,
|
|
"output power data only"),
|
|
OPT_CALLBACK('p', "process", NULL, "process",
|
|
"process selector. Pass a pid or process name.",
|
|
parse_process),
|
|
OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
|
|
"Look for files with symbols relative to this directory"),
|
|
OPT_END()
|
|
};
|
|
|
|
|
|
int cmd_timechart(int argc, const char **argv, const char *prefix __used)
|
|
{
|
|
argc = parse_options(argc, argv, options, timechart_usage,
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
|
|
symbol__init();
|
|
|
|
if (argc && !strncmp(argv[0], "rec", 3))
|
|
return __cmd_record(argc, argv);
|
|
else if (argc)
|
|
usage_with_options(timechart_usage, options);
|
|
|
|
setup_pager();
|
|
|
|
return __cmd_timechart();
|
|
}
|