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>
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@ -1951,6 +1951,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
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strcmp(token, "*") == 0 ||
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strcmp(token, "^") == 0 ||
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strcmp(token, "/") == 0 ||
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strcmp(token, "%") == 0 ||
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strcmp(token, "<") == 0 ||
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strcmp(token, ">") == 0 ||
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strcmp(token, "<=") == 0 ||
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@ -3689,6 +3690,9 @@ eval_num_arg(void *data, int size, struct event_format *event, struct print_arg
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case '/':
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val = left / right;
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break;
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case '%':
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val = left % right;
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break;
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case '*':
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val = left * right;
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break;
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