Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/util/compress.h b/tools/perf/util/compress.h
index 892e92e..0cd3369 100644
--- a/tools/perf/util/compress.h
+++ b/tools/perf/util/compress.h
@@ -2,6 +2,11 @@
#ifndef PERF_COMPRESS_H
#define PERF_COMPRESS_H
+#include <stdbool.h>
+#ifdef HAVE_ZSTD_SUPPORT
+#include <zstd.h>
+#endif
+
#ifdef HAVE_ZLIB_SUPPORT
int gzip_decompress_to_file(const char *input, int output_fd);
bool gzip_is_compressed(const char *input);
@@ -12,4 +17,52 @@
bool lzma_is_compressed(const char *input);
#endif
+struct zstd_data {
+#ifdef HAVE_ZSTD_SUPPORT
+ ZSTD_CStream *cstream;
+ ZSTD_DStream *dstream;
+#endif
+};
+
+#ifdef HAVE_ZSTD_SUPPORT
+
+int zstd_init(struct zstd_data *data, int level);
+int zstd_fini(struct zstd_data *data);
+
+size_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
+ void *src, size_t src_size, size_t max_record_size,
+ size_t process_header(void *record, size_t increment));
+
+size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size,
+ void *dst, size_t dst_size);
+#else /* !HAVE_ZSTD_SUPPORT */
+
+static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
+{
+ return 0;
+}
+
+static inline int zstd_fini(struct zstd_data *data __maybe_unused)
+{
+ return 0;
+}
+
+static inline
+size_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused,
+ void *dst __maybe_unused, size_t dst_size __maybe_unused,
+ void *src __maybe_unused, size_t src_size __maybe_unused,
+ size_t max_record_size __maybe_unused,
+ size_t process_header(void *record, size_t increment) __maybe_unused)
+{
+ return 0;
+}
+
+static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused,
+ size_t src_size __maybe_unused, void *dst __maybe_unused,
+ size_t dst_size __maybe_unused)
+{
+ return 0;
+}
+#endif
+
#endif /* PERF_COMPRESS_H */