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-4bjnoy4sln7adqtd3505q...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.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 b55f4281b1da..33f363caaa7c 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;
@@ -2040,6 +2044,7 @@ 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;
@@ -2066,6 +2071,7 @@ 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

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