diff options
| author |   Damjan Marion <damarion@cisco.com> | 2019-01-24 20:24:33 +0100 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2019-01-24 22:43:20 +0000 |
| commit | 69a1d6452f8c1130ff6d6153f6d0cde843491c08 (patch) | |
| tree | 033057f6d6a05ea974e42454e5b463efc4a36983 | |
| parent | 5f45e01f5c3ce239eccd9546e2d04fa3141ca5cb (diff) | |
perfmon: enable pmc event before reading rdpmc index
Change-Id: I9b0a101e5d78c10257e3c5d8f5573c3eb29bfdef
Signed-off-by: Damjan Marion <damarion@cisco.com>
| -rw-r--r-- | src/plugins/perfmon/perfmon_periodic.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/plugins/perfmon/perfmon_periodic.c b/src/plugins/perfmon/perfmon_periodic.c index ae20ac4c62f..ccf3e9eed81 100644 --- a/src/plugins/perfmon/perfmon_periodic.c +++ b/src/plugins/perfmon/perfmon_periodic.c @@ -161,6 +161,12 @@ enable_current_events (perfmon_main_t * pm) else p = 0; + if (ioctl (fd, PERF_EVENT_IOC_RESET, 0) < 0) + clib_unix_warning ("reset ioctl"); + + if (ioctl (fd, PERF_EVENT_IOC_ENABLE, 0) < 0) + clib_unix_warning ("enable ioctl"); + /* * Software event counters - and others not capable of being * read via the "rdpmc" instruction - will be read @@ -171,12 +177,6 @@ enable_current_events (perfmon_main_t * pm) else index = p->index - 1; - if (ioctl (fd, PERF_EVENT_IOC_RESET, 0) < 0) - clib_unix_warning ("reset ioctl"); - - if (ioctl (fd, PERF_EVENT_IOC_ENABLE, 0) < 0) - clib_unix_warning ("enable ioctl"); - pm->rdpmc_indices[i][my_thread_index] = index; pm->perf_event_pages[i][my_thread_index] = (void *) p; pm->pm_fds[i][my_thread_index] = fd; |