linux-kernel - [PATCH 2/5] perf session: Add path to reader object

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Date:   Sun, 10 Mar 2019 16:30:23 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Stephane Eranian <eranian@...gle.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>
Subject: [PATCH 2/5] perf session: Add path to reader object

Adding path to reader object, so we can display file
the processing fails for (string in [] brackets).

  $ perf report --stdio
  0x5e0 [perf.data/data.3] [0xa200]: failed to process type: -1577027574

Link: http://lkml.kernel.org/n/tip-4bjnoy4sln7adqtd3505q29q@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/session.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index b0c29a19f189..942067d7d853 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1858,6 +1858,7 @@ struct reader {
 	u64		 data_size;
 	u64		 data_offset;
 	reader_cb_t	 process;
+	char		*path;
 };
 
 static int
@@ -1872,6 +1873,8 @@ reader__process_events(struct reader *rd, struct perf_session *session,
 	union perf_event *event;
 	s64 skip;
 
+	pr_debug("reader processing %s\n", rd->path);
+
 	page_offset = page_size * (rd->data_offset / page_size);
 	file_offset = page_offset;
 	head = rd->data_offset - page_offset;
@@ -1927,8 +1930,8 @@ reader__process_events(struct reader *rd, struct perf_session *session,
 
 	if (size < sizeof(struct perf_event_header) ||
 	    (skip = rd->process(session, event, file_pos)) < 0) {
-		pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
-		       file_offset + head, event->header.size,
+		pr_err("%#" PRIx64 " [%s] [%#x]: failed to process type: %d\n",
+		       file_offset + head, rd->path, event->header.size,
 		       event->header.type);
 		err = -EINVAL;
 		goto out;
@@ -1966,6 +1969,7 @@ static int __perf_session__process_events(struct perf_session *session)
 		.data_size	= session->header.data_size,
 		.data_offset	= session->header.data_offset,
 		.process	= process_simple,
+		.path		= session->data->file.path,
 	};
 	struct ordered_events *oe = &session->ordered_events;
 	struct perf_tool *tool = session->tool;
@@ -2045,6 +2049,7 @@ static int __perf_session__process_dir_events(struct perf_session *session)
 		.data_size	= session->header.data_size,
 		.data_offset	= session->header.data_offset,
 		.process	= process_simple,
+		.path		= session->data->file.path,
 	};
 	int i, ret = 0;
 	struct ui_progress prog;
@@ -2081,6 +2086,7 @@ static int __perf_session__process_dir_events(struct perf_session *session)
 			.data_size	= file->size,
 			.data_offset	= 0,
 			.process	= process_index,
+			.path		= file->path,
 		};
 
 		ret = reader__process_events(&rd, session, &prog);
-- 
2.17.2