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perf tools: Introduce per user view

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The new --uid command line option will show only the tasks for a given
user, using the proc interface to figure out the existing tasks.

Kernel work is needed to close races at startup, but this should already
be useful in many use cases.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-bdnspm000gw2l984a2t53o8z@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2012-01-19 14:08:15 -02:00
parent 9ae7d3351a
commit 0d37aa34f8
18 changed files with 200 additions and 22 deletions
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6
tools/perf/util/evlist.c
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@@ -594,14 +594,14 @@ int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
}
int perf_evlist__create_maps(struct perf_evlist *evlist, pid_t target_pid,
pid_t target_tid, const char *cpu_list)
pid_t target_tid, uid_t uid, const char *cpu_list)
{
evlist->threads = thread_map__new(target_pid, target_tid);
evlist->threads = thread_map__new(target_pid, target_tid, uid);
if (evlist->threads == NULL)
return -1;
if (cpu_list == NULL && target_tid != -1)
if (uid != UINT_MAX || (cpu_list == NULL && target_tid != -1))
evlist->cpus = cpu_map__dummy_new();
else
evlist->cpus = cpu_map__new(cpu_list);