On Tue, Mar 12, 2019 at 08:23:42AM +0300, Alexey Budankov wrote: > > Implemented functions are based on Zstd streaming compression API. > The functions are used in runtime to compress data that come from > mmaped kernel buffer. zstd_init(), zstd_fini() are used for > initialization and finalization to allocate and deallocate internal > zstd objects. zstd_compress_stream_to_records() is used to convert > parts of mmaped kernel buffer into an array of PERF_RECORD_COMPRESSED > records. > > Signed-off-by: Alexey Budankov <[email protected]> > --- > tools/perf/util/Build | 2 + > tools/perf/util/compress.h | 18 ++++++++ > tools/perf/util/zstd.c | 95 ++++++++++++++++++++++++++++++++++++++ > 3 files changed, 115 insertions(+) > create mode 100644 tools/perf/util/zstd.c > > diff --git a/tools/perf/util/Build b/tools/perf/util/Build > index 8dd3102301ea..920ee8bebd83 100644 > --- a/tools/perf/util/Build > +++ b/tools/perf/util/Build > @@ -145,6 +145,8 @@ perf-y += scripting-engines/ > > perf-$(CONFIG_ZLIB) += zlib.o > perf-$(CONFIG_LZMA) += lzma.o > +perf-y += zstd.o
we have CONFIG_ZSTD, so we can do: perf-$(CONFIG_ZSTD) += zstd.o and skip that #ifdef HAVE_ZSTD_SUPPORT in zstd.c and put stub inlines into compress.h thanks, jirka
