On Mon, Feb 11, 2019 at 11:22:38PM +0300, Alexey Budankov wrote: > > Implement -z,--compression_level=<n> and --mmap-flush=<dump_least_size> > options as well as a special PERF_RECORD_COMPRESSED record that contains > compressed parts of kernel data buffer. > > Because compression requires auxilary memory to implement encoding of > kernel data record->opts.nr_cblocks == -1 signifies to preallocate single > AIO data buffer aio.data[0] without accompnying AIO control blocks. > > Signed-off-by: Alexey Budankov <[email protected]> > --- > Changes in v2: > - enabled allocation aio data buffers for compression > > --- > tools/perf/Documentation/perf-record.txt | 9 ++ > tools/perf/builtin-record.c | 110 +++++++++++++++++++---- > tools/perf/perf.h | 2 + > tools/perf/util/env.h | 10 +++ > tools/perf/util/event.c | 1 + > tools/perf/util/event.h | 7 ++ > tools/perf/util/evlist.c | 6 +- > tools/perf/util/evlist.h | 3 +- > tools/perf/util/header.c | 45 +++++++++- > tools/perf/util/header.h | 1 + > tools/perf/util/mmap.c | 98 ++++++++++++-------- > tools/perf/util/mmap.h | 7 +- > tools/perf/util/session.h | 2 + > 13 files changed, 240 insertions(+), 61 deletions(-)
this patch is super complicated.. please think of reviewers when writing code ;-) it needs to be split to small logical patches, where each change is explained in changelog jirka
