perfmon: collect data on selected thread(s)
Add missing pre-input node runtime fork and refork code.
unix-epoll-input runs on all threads; each instance needs its own
runtime stats.
Change-Id: I16b02e42d0c95f863161176c4bb9f9917bef809d
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/src/plugins/perfmon/perfmon.c b/src/plugins/perfmon/perfmon.c
index 3595557..7f621a1 100644
--- a/src/plugins/perfmon/perfmon.c
+++ b/src/plugins/perfmon/perfmon.c
@@ -301,11 +301,15 @@
unformat_input_t * input, vlib_cli_command_t * cmd)
{
perfmon_main_t *pm = &perfmon_main;
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ int num_threads = 1 + vtm->n_threads;
unformat_input_t _line_input, *line_input = &_line_input;
perfmon_event_config_t ec;
f64 delay;
u32 timeout_seconds;
u32 deadman;
+ int last_set;
+ clib_error_t *error;
vec_reset_length (pm->single_events_to_collect);
vec_reset_length (pm->paired_events_to_collect);
@@ -315,6 +319,8 @@
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, "counter names required...");
+ clib_bitmap_zero (pm->thread_bitmap);
+
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "timeout %u", &timeout_seconds))
@@ -343,6 +349,12 @@
ec.pe_config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
vec_add1 (pm->paired_events_to_collect, ec);
}
+ else if (unformat (line_input, "threads %U",
+ unformat_bitmap_list, &pm->thread_bitmap))
+ ;
+ else if (unformat (line_input, "thread %U",
+ unformat_bitmap_list, &pm->thread_bitmap))
+ ;
else if (unformat (line_input, "%U", unformat_processor_event, pm, &ec))
{
vec_add1 (pm->single_events_to_collect, ec);
@@ -358,10 +370,20 @@
foreach_perfmon_event
#undef _
else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ unformat_free (line_input);
+ return error;
+ }
}
+ unformat_free (line_input);
+
+ last_set = clib_bitmap_last_set (pm->thread_bitmap);
+ if (last_set != ~0 && last_set >= num_threads)
+ return clib_error_return (0, "thread %d does not exist", last_set);
+
/* Stick paired events at the front of the (unified) list */
if (vec_len (pm->paired_events_to_collect) > 0)
{
@@ -410,7 +432,7 @@
VLIB_CLI_COMMAND (set_pmc_command, static) =
{
.path = "set pmc",
- .short_help = "set pmc c1 [..., use \"show pmc events\"]",
+ .short_help = "set pmc [threads n,n1-n2] c1... [see \"show pmc events\"]",
.function = set_pmc_command_fn,
.is_mp_safe = 1,
};