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authorDaniel Bristot de Oliveira <bristot@redhat.com>2016-02-22 14:08:22 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-02-23 11:40:51 -0300
commit0e47b38dcd24c78d0699b42f28d5986154d2aa11 (patch)
tree41f30f6939d14fb0185936dc8b554f8456e2d40c /tools/lib
parent03e0a7df3efd959e40cd7ff40b1fabddc234ec5a (diff)
tools lib traceevent: Implement '%' operation
The operation '%' is not implemented on event-parse.c, causing an error when parsing events with '%' the operation in its printk format. For example, # perf record -e sched:sched_deadline_yield ~/yield-test Warning: [sched:sched_deadline_yield] unknown op '%' .... # perf script Warning: [sched:sched_deadline_yield] unknown op '%' test 1641 [006] 3364.109319: sched:sched_deadline_yield: \ [FAILED TO PARSE] now=3364109314595 \ deadline=3364139295135 runtime=19975597 This patch implements the '%' operation. With this patch, we see the correct output: # perf record -e sched:sched_deadline_yield ~/yield-test No Warning # perf script yield-test 4005 [001] 4623.650978: sched:sched_deadline_yield: \ now=4623.650974050 \ deadline=4623.680957364 remaining_runtime=19979611 Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: Juri Lelli <juri.lelli@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-rt-users <linux-rt-users@vger.kernel.org> Link: http://lkml.kernel.org/r/5c96a395c56cea6d3d13d949051bdece86cc26e0.1456157869.git.bristot@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
-rw-r--r--tools/lib/traceevent/event-parse.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index c3bd294a63d1..575e75174087 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -1951,6 +1951,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
strcmp(token, "*") == 0 ||
strcmp(token, "^") == 0 ||
strcmp(token, "/") == 0 ||
+ strcmp(token, "%") == 0 ||
strcmp(token, "<") == 0 ||
strcmp(token, ">") == 0 ||
strcmp(token, "<=") == 0 ||
@@ -3689,6 +3690,9 @@ eval_num_arg(void *data, int size, struct event_format *event, struct print_arg
case '/':
val = left / right;
break;
+ case '%':
+ val = left % right;
+ break;
case '*':
val = left * right;
break;