linux-kernel - [PATCH v3 8/8] perf session: Introduce reader EOF function

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Date:   Thu,  7 Oct 2021 13:25:43 +0300
From:   Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexander Antonov <alexander.antonov@...ux.intel.com>,
        Alexei Budankov <abudankov@...wei.com>,
        Riccardo Mancini <rickyman7@...il.com>
Subject: [PATCH v3 8/8] perf session: Introduce reader EOF function

Introducing a function to check end-of-file status.

Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>
---
 tools/perf/util/session.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 7d88c651ffd7..f74e153231fa 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -2311,6 +2311,12 @@ reader__read_event(struct reader *rd, struct perf_session *session,
 	return err;
 }
 
+static inline bool
+reader__eof(struct reader *rd)
+{
+	return (rd->file_pos >= rd->data_size + rd->data_offset);
+}
+
 static int
 reader__process_events(struct reader *rd, struct perf_session *session,
 		       struct ui_progress *prog)
@@ -2336,7 +2342,7 @@ reader__process_events(struct reader *rd, struct perf_session *session,
 	if (session_done())
 		goto out;
 
-	if (rd->file_pos < rd->data_size + rd->data_offset)
+	if (!reader__eof(rd))
 		goto more;
 
 out:
-- 
2.19.0