From: Steven Rostedt (Google) Date: Tue, 6 Sep 2022 22:53:14 +0000 (-0400) Subject: tracing: Add numeric delta time to the trace event benchmark X-Git-Tag: v6.6.17~6369^2~44 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b7b037eb5f548cc947e743d456d66eb110316f1e;p=platform%2Fkernel%2Flinux-rpi.git tracing: Add numeric delta time to the trace event benchmark In order to testing filtering and histograms via the trace event benchmark, record the delta time of the last event as a numeric value (currently, it just saves it within the string) so that filters and histograms can use it. Link: https://lkml.kernel.org/r/20220906225529.213677569@goodmis.org Cc: Ingo Molnar Cc: Andrew Morton Cc: Masami Hiramatsu Cc: Tom Zanussi Signed-off-by: Steven Rostedt (Google) --- diff --git a/kernel/trace/trace_benchmark.c b/kernel/trace/trace_benchmark.c index 801c2a7..54d5fa3 100644 --- a/kernel/trace/trace_benchmark.c +++ b/kernel/trace/trace_benchmark.c @@ -51,7 +51,7 @@ static void trace_do_benchmark(void) local_irq_disable(); start = trace_clock_local(); - trace_benchmark_event(bm_str); + trace_benchmark_event(bm_str, bm_last); stop = trace_clock_local(); local_irq_enable(); diff --git a/kernel/trace/trace_benchmark.h b/kernel/trace/trace_benchmark.h index 79e6fbe..c3e9106 100644 --- a/kernel/trace/trace_benchmark.h +++ b/kernel/trace/trace_benchmark.h @@ -14,19 +14,21 @@ extern void trace_benchmark_unreg(void); TRACE_EVENT_FN(benchmark_event, - TP_PROTO(const char *str), + TP_PROTO(const char *str, u64 delta), - TP_ARGS(str), + TP_ARGS(str, delta), TP_STRUCT__entry( __array( char, str, BENCHMARK_EVENT_STRLEN ) + __field( u64, delta) ), TP_fast_assign( memcpy(__entry->str, str, BENCHMARK_EVENT_STRLEN); + __entry->delta = delta; ), - TP_printk("%s", __entry->str), + TP_printk("%s delta=%llu", __entry->str, __entry->delta), trace_benchmark_reg, trace_benchmark_unreg );