From 9aa0bfa370b278a539077002b3c660468d66b5e7 Mon Sep 17 00:00:00 2001 From: Song Liu Date: Thu, 17 Jan 2019 08:15:17 -0800 Subject: perf tools: Handle PERF_RECORD_KSYMBOL This patch handles PERF_RECORD_KSYMBOL in perf record/report. Specifically, map and symbol are created for ksymbol register, and removed for ksymbol unregister. This patch also sets perf_event_attr.ksymbol properly. The flag is ON by default. Committer notes: Use proper inttypes.h for u64, fixing the build in some environments like in the android NDK r15c targetting ARM 32-bit. I.e. fixing this build error: util/event.c: In function 'perf_event__fprintf_ksymbol': util/event.c:1489:10: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'u64' [-Werror=format=] event->ksymbol_event.flags, event->ksymbol_event.name); ^ cc1: all warnings being treated as errors Signed-off-by: Song Liu Reviewed-by: Arnaldo Carvalho de Melo Tested-by: Arnaldo Carvalho de Melo Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: Peter Zijlstra Cc: kernel-team@fb.com Cc: netdev@vger.kernel.org Link: http://lkml.kernel.org/r/20190117161521.1341602-6-songliubraving@fb.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools/perf/util/session.c') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index b26bc9c54200..dcfacfb036a3 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -379,6 +379,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool) tool->itrace_start = perf_event__process_itrace_start; if (tool->context_switch == NULL) tool->context_switch = perf_event__process_switch; + if (tool->ksymbol == NULL) + tool->ksymbol = perf_event__process_ksymbol; if (tool->read == NULL) tool->read = process_event_sample_stub; if (tool->throttle == NULL) @@ -1310,6 +1312,8 @@ static int machines__deliver_event(struct machines *machines, case PERF_RECORD_SWITCH: case PERF_RECORD_SWITCH_CPU_WIDE: return tool->context_switch(tool, event, sample, machine); + case PERF_RECORD_KSYMBOL: + return tool->ksymbol(tool, event, sample, machine); default: ++evlist->stats.nr_unknown_events; return -1; -- cgit v1.2.3