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Date: Wed, 1 Nov 2017 05:53:25 +0000 From: Wang Nan <wangnan0@...wei.com> To: <linux-kernel@...r.kernel.org>, <kan.liang@...el.com>, <acme@...nel.org>, <jolsa@...hat.com>, <namhyung@...nel.org> CC: Wang Nan <wangnan0@...wei.com> Subject: [PATCH 0/2] perf record: Fix --overwrite and clarify concepts Kan reports that 'perf record --overwrite' not working as it should be. Patch 1/2 fix a bug, map backward events to readonly ring buffer so kernel can overwrite that ring buffer. Patch 2/2 clarify concepts of 'overwrite' and 'backward' in the source code by introducing the concept of 'flightrecorder' and convert many 'overwrite' to it to clarify that what we really want is a perf record flightrecorder mode, not only mapping the ring buffer overwritable. Wang Nan (2): perf mmap: Fix perf backward recording perf record: Replace 'overwrite' by 'flightrecorder' for better naming tools/perf/Documentation/perf-record.txt | 8 ++++---- tools/perf/builtin-record.c | 4 ++-- tools/perf/perf.h | 2 +- tools/perf/util/evlist.c | 8 +++++++- tools/perf/util/evsel.c | 6 +++--- tools/perf/util/evsel.h | 4 ++-- tools/perf/util/parse-events.c | 20 ++++++++++---------- tools/perf/util/parse-events.h | 4 ++-- tools/perf/util/parse-events.l | 4 ++-- 9 files changed, 33 insertions(+), 27 deletions(-) -- 2.10.1
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