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-rw-r--r--tools/perf/builtin-record.c51
-rw-r--r--tools/perf/util/session.h2
2 files changed, 51 insertions, 2 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index ca6d7488e34b..de9632c69852 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -133,6 +133,9 @@ static int record__write(struct record *rec, struct perf_mmap *map __maybe_unuse
return 0;
}
+static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size,
+ void *src, size_t src_size);
+
#ifdef HAVE_AIO_SUPPORT
static int record__aio_write(struct aiocb *cblock, int trace_fd,
void *buf, size_t size, off_t off)
@@ -392,6 +395,11 @@ static int record__pushfn(struct perf_mmap *map, void *to, void *bf, size_t size
{
struct record *rec = to;
+ if (record__comp_enabled(rec)) {
+ size = zstd_compress(rec->session, map->data, perf_mmap__mmap_len(map), bf, size);
+ bf = map->data;
+ }
+
rec->samples++;
return record__write(rec, map, bf, size);
}
@@ -778,6 +786,37 @@ static void record__adjust_affinity(struct record *rec, struct perf_mmap *map)
}
}
+static size_t process_comp_header(void *record, size_t increment)
+{
+ struct compressed_event *event = record;
+ size_t size = sizeof(*event);
+
+ if (increment) {
+ event->header.size += increment;
+ return increment;
+ }
+
+ event->header.type = PERF_RECORD_COMPRESSED;
+ event->header.size = size;
+
+ return size;
+}
+
+static size_t zstd_compress(struct perf_session *session, void *dst, size_t dst_size,
+ void *src, size_t src_size)
+{
+ size_t compressed;
+ size_t max_record_size = PERF_SAMPLE_MAX_SIZE - sizeof(struct compressed_event) - 1;
+
+ compressed = zstd_compress_stream_to_records(&session->zstd_data, dst, dst_size, src, src_size,
+ max_record_size, process_comp_header);
+
+ session->bytes_transferred += src_size;
+ session->bytes_compressed += compressed;
+
+ return compressed;
+}
+
static int record__mmap_read_evlist(struct record *rec, struct perf_evlist *evlist,
bool overwrite, bool synch)
{
@@ -1225,6 +1264,14 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
fd = perf_data__fd(data);
rec->session = session;
+ if (zstd_init(&session->zstd_data, rec->opts.comp_level) < 0) {
+ pr_err("Compression initialization failed.\n");
+ return -1;
+ }
+
+ session->header.env.comp_type = PERF_COMP_ZSTD;
+ session->header.env.comp_level = rec->opts.comp_level;
+
record__init_features(rec);
if (rec->opts.use_clockid && rec->opts.clockid_res_ns)
@@ -1565,6 +1612,7 @@ out_child:
}
out_delete_session:
+ zstd_fini(&session->zstd_data);
perf_session__delete(session);
if (!opts->no_bpf_event)
@@ -2294,8 +2342,7 @@ int cmd_record(int argc, const char **argv)
if (rec->opts.nr_cblocks > nr_cblocks_max)
rec->opts.nr_cblocks = nr_cblocks_max;
- if (verbose > 0)
- pr_info("nr_cblocks: %d\n", rec->opts.nr_cblocks);
+ pr_debug("nr_cblocks: %d\n", rec->opts.nr_cblocks);
pr_debug("affinity: %s\n", affinity_tags[rec->opts.affinity]);
pr_debug("mmap flush: %d\n", rec->opts.mmap_flush);
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 0e14884f28b2..6c984c895924 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -8,6 +8,7 @@
#include "machine.h"
#include "data.h"
#include "ordered-events.h"
+#include "util/compress.h"
#include <linux/kernel.h>
#include <linux/rbtree.h>
#include <linux/perf_event.h>
@@ -37,6 +38,7 @@ struct perf_session {
struct perf_tool *tool;
u64 bytes_transferred;
u64 bytes_compressed;
+ struct zstd_data zstd_data;
};
struct perf_tool;