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perf tools: Refactor all_tids to hold nr and the map

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So that later, we can pass the thread_map instance instead of
(thread_num, thread_map) for things like perf_evsel__open and friends,
just like was done with cpu_map.

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>
This commit is contained in:
Arnaldo Carvalho de Melo
2011-01-03 17:53:33 -02:00
parent 60d567e2d9
commit 5c98d466e4
5 changed files with 88 additions and 85 deletions
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35
tools/perf/builtin-top.c
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@ -68,8 +68,7 @@ static int print_entries;
static int target_pid = -1;
static int target_tid = -1;
static pid_t *all_tids = NULL;
static int thread_num = 0;
static struct thread_map *threads;
static bool inherit = false;
static struct cpu_map *cpus;
static int realtime_prio = 0;
@ -1200,7 +1199,7 @@ static void perf_session__mmap_read(struct perf_session *self)
for (i = 0; i < cpus->nr; i++) {
list_for_each_entry(counter, &evsel_list, node) {
for (thread_index = 0;
thread_index < thread_num;
thread_index < threads->nr;
thread_index++) {
perf_session__mmap_read_counter(self,
counter, i, thread_index);
@ -1236,10 +1235,10 @@ static void start_counter(int i, struct perf_evsel *evsel)
attr->inherit = (cpu < 0) && inherit;
attr->mmap = 1;
for (thread_index = 0; thread_index < thread_num; thread_index++) {
for (thread_index = 0; thread_index < threads->nr; thread_index++) {
try_again:
FD(evsel, i, thread_index) = sys_perf_event_open(attr,
all_tids[thread_index], cpu, group_fd, 0);
threads->map[thread_index], cpu, group_fd, 0);
if (FD(evsel, i, thread_index) < 0) {
int err = errno;
@ -1410,25 +1409,17 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
if (argc)
usage_with_options(top_usage, options);
if (target_pid != -1) {
if (target_pid != -1)
target_tid = target_pid;
thread_num = find_all_tid(target_pid, &all_tids);
if (thread_num <= 0) {
fprintf(stderr, "Can't find all threads of pid %d\n",
target_pid);
usage_with_options(top_usage, options);
}
} else {
all_tids=malloc(sizeof(pid_t));
if (!all_tids)
return -ENOMEM;
all_tids[0] = target_tid;
thread_num = 1;
threads = thread_map__new(target_pid, target_tid);
if (threads == NULL) {
pr_err("Problems finding threads of monitor\n");
usage_with_options(top_usage, options);
}
event_array = malloc(
sizeof(struct pollfd)*MAX_NR_CPUS*MAX_COUNTERS*thread_num);
event_array = malloc((sizeof(struct pollfd) *
MAX_NR_CPUS * MAX_COUNTERS * threads->nr));
if (!event_array)
return -ENOMEM;
@ -1468,8 +1459,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
usage_with_options(top_usage, options);
list_for_each_entry(pos, &evsel_list, node) {
if (perf_evsel__alloc_mmap_per_thread(pos, cpus->nr, thread_num) < 0 ||
perf_evsel__alloc_fd(pos, cpus->nr, thread_num) < 0)
if (perf_evsel__alloc_mmap_per_thread(pos, cpus->nr, threads->nr) < 0 ||
perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
goto out_free_fd;
/*
* Fill in the ones not specifically initialized via -c: