Based on previous discussion, perf needs to support only two types of ringbuffer: read-write + forward, readonly + backward. This patchset completly removes the concept of 'overwrite' from code level, controls mapping permission using write_backward instead.
Wang Nan (7): perf mmap: Fix perf backward recording perf tests: Set evlist of test__backward_ring_buffer() to !overwrite perf tests: Set evlist of test__sw_clock_freq() to !overwrite perf tests: Set evlist of test__basic_mmap() to !overwrite perf tests: Set evlist of test__task_exit() to !overwrite perf tools: Remove 'overwrite' concept from code level perf tools: Remove prot field in mmap param tools/perf/arch/x86/tests/perf-time-to-tsc.c | 2 +- tools/perf/builtin-kvm.c | 2 +- tools/perf/builtin-record.c | 4 ++-- tools/perf/builtin-top.c | 2 +- tools/perf/builtin-trace.c | 2 +- tools/perf/tests/backward-ring-buffer.c | 2 +- tools/perf/tests/bpf.c | 2 +- tools/perf/tests/code-reading.c | 2 +- tools/perf/tests/keep-tracking.c | 2 +- tools/perf/tests/mmap-basic.c | 2 +- tools/perf/tests/openat-syscall-tp-fields.c | 2 +- tools/perf/tests/perf-record.c | 2 +- tools/perf/tests/sw-clock.c | 2 +- tools/perf/tests/switch-tracking.c | 2 +- tools/perf/tests/task-exit.c | 2 +- tools/perf/util/evlist.c | 21 ++++++++++----------- tools/perf/util/evlist.h | 6 ++---- tools/perf/util/mmap.c | 10 +++++----- tools/perf/util/mmap.h | 6 +++--- tools/perf/util/python.c | 10 +++++----- 20 files changed, 41 insertions(+), 44 deletions(-) -- 2.10.1
