From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
Corey Ashford <cjashfor@linux.vnet.ibm.com>,
David Ahern <dsahern@gmail.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Namhyung Kim <namhyung@kernel.org>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Steven Rostedt <rostedt@goodmis.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 13/16] perf evsel: Fix ftrace:function event recording
Date: Wed, 19 Nov 2014 13:03:33 -0300 [thread overview]
Message-ID: <1416413016-19110-14-git-send-email-acme@kernel.org> (raw)
In-Reply-To: <1416413016-19110-1-git-send-email-acme@kernel.org>
From: Jiri Olsa <jolsa@kernel.org>
Following patch fails (-EINVAL) ftrace:function with enabled user
space callchains:
cfa77bc4af2c perf: Disallow user-space callchains for function trace events
We need to follow in perf tool itself and explicitly set the
perf_event_attr::exclude_callchain_user flag for ftrace:function
event.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1415899263-24820-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/evsel.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 34344ffa79ca..f2dc91fb87fa 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -658,6 +658,14 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
attr->mmap_data = track;
}
+ /*
+ * We don't allow user space callchains for function trace
+ * event, due to issues with page faults while tracing page
+ * fault handler and its overall trickiness nature.
+ */
+ if (perf_evsel__is_function_event(evsel))
+ evsel->attr.exclude_callchain_user = 1;
+
if (callchain_param.enabled && !evsel->no_aux_samples)
perf_evsel__config_callgraph(evsel);
--
1.9.3
next prev parent reply other threads:[~2014-11-19 16:04 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-19 16:03 [GIT PULL 00/16] perf/core improvements and fixes Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 01/16] perf build-id: Move disable_buildid_cache() to util/build-id.c Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 02/16] perf tools: Clean up libelf feature support code Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 03/16] perf symbols: Fallback to kallsyms when using the minimal 'ELF' loader Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 04/16] perf test: fix typo in python test Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 05/16] perf tools: Fix annotation with kcore Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 06/16] perf callchain: Factor out adding new call chain entries Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 07/16] perf callchain: Use al.addr to set up call chain Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 08/16] perf callchain: Use a common function to resolve symbol or name Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 09/16] perf tools: Only print base source file for srcline Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 10/16] perf annotate: Support source line numbers in annotate Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 11/16] perf hists: Fix up srcline histogram key formatting Arnaldo Carvalho de Melo
2014-11-19 16:16 ` Andi Kleen
2014-11-19 16:03 ` [PATCH 12/16] perf diff: Add missing handler for PERF_RECORD_MMAP2 events Arnaldo Carvalho de Melo
2014-11-19 16:03 ` Arnaldo Carvalho de Melo [this message]
2014-11-19 16:03 ` [PATCH 14/16] perf evlist: Do not poll events that use the system_wide flag Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 15/16] perf tools: Add perf-read-vdso32 and perf-read-vdsox32 to .gitignore Arnaldo Carvalho de Melo
2014-11-19 16:03 ` [PATCH 16/16] perf tools: Only override the default :tid comm entry Arnaldo Carvalho de Melo
2014-11-20 7:33 ` [GIT PULL 00/16] perf/core improvements and fixes Ingo Molnar
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