Messages in this thread | | | Date | Fri, 25 Jun 2010 10:13:56 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 2/3] perf: Remove dead code in buildin-record.c |
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Em Fri, Jun 25, 2010 at 10:16:59AM +0800, Gui Jianfeng escreveu: > group_fd related code is dead here, remove them.
I agree it is dead at the moment, but I think Peter (or was it Ingo at the time?) had a reason for it to live, Peter, care to take a look?
- Arnaldo
> Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> > --- > tools/perf/builtin-record.c | 12 +----------- > 1 files changed, 1 insertions(+), 11 deletions(-) > > diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c > index abaf0f8..84d58b7 100644 > --- a/tools/perf/builtin-record.c > +++ b/tools/perf/builtin-record.c > @@ -45,7 +45,6 @@ static int freq = 1000; > static int output; > static int pipe_output = 0; > static const char *output_name = "perf.data"; > -static int group = 0; > static int realtime_prio = 0; > static bool raw_samples = false; > static bool system_wide = false; > @@ -203,8 +202,6 @@ static void sig_atexit(void) > kill(getpid(), signr); > } > > -static int group_fd; > - > static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int nr) > { > struct perf_header_attr *h_attr; > @@ -291,7 +288,7 @@ static void create_counter(int counter, int cpu) > for (thread_index = 0; thread_index < thread_num; thread_index++) { > try_again: > fd[nr_cpu][counter][thread_index] = sys_perf_event_open(attr, > - all_tids[thread_index], cpu, group_fd, 0); > + all_tids[thread_index], cpu, -1, 0); > > if (fd[nr_cpu][counter][thread_index] < 0) { > int err = errno; > @@ -359,12 +356,6 @@ try_again: > assert(fd[nr_cpu][counter][thread_index] >= 0); > fcntl(fd[nr_cpu][counter][thread_index], F_SETFL, O_NONBLOCK); > > - /* > - * First counter acts as the group leader: > - */ > - if (group && group_fd == -1) > - group_fd = fd[nr_cpu][counter][thread_index]; > - > if (counter || thread_index) { > ret = ioctl(fd[nr_cpu][counter][thread_index], > PERF_EVENT_IOC_SET_OUTPUT, > @@ -406,7 +397,6 @@ static void open_counters(int cpu) > { > int counter; > > - group_fd = -1; > for (counter = 0; counter < nr_counters; counter++) > create_counter(counter, cpu); > > -- 1.6.5.2
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