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-rw-r--r--tools/perf/util/zstd.c63
1 files changed, 33 insertions, 30 deletions
diff --git a/tools/perf/util/zstd.c b/tools/perf/util/zstd.c
index 48dd2b018c..57027e0ac7 100644
--- a/tools/perf/util/zstd.c
+++ b/tools/perf/util/zstd.c
@@ -7,35 +7,9 @@
int zstd_init(struct zstd_data *data, int level)
{
- size_t ret;
-
- data->dstream = ZSTD_createDStream();
- if (data->dstream == NULL) {
- pr_err("Couldn't create decompression stream.\n");
- return -1;
- }
-
- ret = ZSTD_initDStream(data->dstream);
- if (ZSTD_isError(ret)) {
- pr_err("Failed to initialize decompression stream: %s\n", ZSTD_getErrorName(ret));
- return -1;
- }
-
- if (!level)
- return 0;
-
- data->cstream = ZSTD_createCStream();
- if (data->cstream == NULL) {
- pr_err("Couldn't create compression stream.\n");
- return -1;
- }
-
- ret = ZSTD_initCStream(data->cstream, level);
- if (ZSTD_isError(ret)) {
- pr_err("Failed to initialize compression stream: %s\n", ZSTD_getErrorName(ret));
- return -1;
- }
-
+ data->comp_level = level;
+ data->dstream = NULL;
+ data->cstream = NULL;
return 0;
}
@@ -54,7 +28,7 @@ int zstd_fini(struct zstd_data *data)
return 0;
}
-size_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
+ssize_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))
{
@@ -63,6 +37,21 @@ size_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t
ZSTD_outBuffer output;
void *record;
+ if (!data->cstream) {
+ data->cstream = ZSTD_createCStream();
+ if (data->cstream == NULL) {
+ pr_err("Couldn't create compression stream.\n");
+ return -1;
+ }
+
+ ret = ZSTD_initCStream(data->cstream, data->comp_level);
+ if (ZSTD_isError(ret)) {
+ pr_err("Failed to initialize compression stream: %s\n",
+ ZSTD_getErrorName(ret));
+ return -1;
+ }
+ }
+
while (input.pos < input.size) {
record = dst;
size = process_header(record, 0);
@@ -96,6 +85,20 @@ size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size
ZSTD_inBuffer input = { src, src_size, 0 };
ZSTD_outBuffer output = { dst, dst_size, 0 };
+ if (!data->dstream) {
+ data->dstream = ZSTD_createDStream();
+ if (data->dstream == NULL) {
+ pr_err("Couldn't create decompression stream.\n");
+ return 0;
+ }
+
+ ret = ZSTD_initDStream(data->dstream);
+ if (ZSTD_isError(ret)) {
+ pr_err("Failed to initialize decompression stream: %s\n",
+ ZSTD_getErrorName(ret));
+ return 0;
+ }
+ }
while (input.pos < input.size) {
ret = ZSTD_decompressStream(data->dstream, &output, &input);
if (ZSTD_isError(ret)) {