X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=iolog.c;h=4ecf39abe914f4afdfda4b181452a9ba775edf5a;hp=71afe86c29a1e50847128591be9bb10adbcea70b;hb=90d2d53f67f45d7501bc5473518a07bf43beba84;hpb=b5b603f474a069eb63839af05db1571a9c122b56

diff --git a/iolog.c b/iolog.c
index 71afe86c..4ecf39ab 100644
--- a/iolog.c
+++ b/iolog.c
@@ -20,6 +20,8 @@
 #include "filelock.h"
 #include "smalloc.h"
 
+static int iolog_flush(struct io_log *log);
+
 static const char iolog_ver2[] = "fio version 2 iolog";
 
 void queue_io_piece(struct thread_data *td, struct io_piece *ipo)
@@ -575,8 +577,8 @@ void setup_log(struct io_log **log, struct log_params *p,
 {
 	struct io_log *l;
 
-	l = smalloc(sizeof(*l));
-	l->nr_samples = 0;
+	l = scalloc(1, sizeof(*l));
+	INIT_FLIST_HEAD(&l->io_logs);
 	l->log_type = p->log_type;
 	l->log_offset = p->log_offset;
 	l->log_gz = p->log_gz;
@@ -585,6 +587,15 @@ void setup_log(struct io_log **log, struct log_params *p,
 	l->filename = strdup(filename);
 	l->td = p->td;
 
+	if (l->td && l->td->o.io_submit_mode != IO_MODE_OFFLOAD) {
+		struct io_logs *p;
+
+		p = calloc(1, sizeof(*l->pending));
+		p->max_samples = DEF_LOG_ENTRIES;
+		p->log = calloc(p->max_samples, log_entry_sz(l));
+		l->pending = p;
+	}
+
 	if (l->log_offset)
 		l->log_ddir_mask = LOG_OFFSET_SAMPLE_BIT;
 
@@ -593,7 +604,7 @@ void setup_log(struct io_log **log, struct log_params *p,
 	if (l->log_gz && !p->td)
 		l->log_gz = 0;
 	else if (l->log_gz || l->log_gz_store) {
-		pthread_mutex_init(&l->chunk_lock, NULL);
+		mutex_init_pshared(&l->chunk_lock);
 		p->td->flags |= TD_F_COMPRESS_LOG;
 	}
 
@@ -628,7 +639,21 @@ static void clear_file_buffer(void *buf)
 
 void free_log(struct io_log *log)
 {
-	free(log->log);
+	while (!flist_empty(&log->io_logs)) {
+		struct io_logs *cur_log;
+
+		cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
+		flist_del_init(&cur_log->list);
+		free(cur_log->log);
+	}
+
+	if (log->pending) {
+		free(log->pending->log);
+		free(log->pending);
+		log->pending = NULL;
+	}
+
+	free(log->pending);
 	free(log->filename);
 	sfree(log);
 }
@@ -673,7 +698,8 @@ struct iolog_flush_data {
 	struct workqueue_work work;
 	struct io_log *log;
 	void *samples;
-	uint64_t nr_samples;
+	uint32_t nr_samples;
+	bool free;
 };
 
 #define GZ_CHUNK	131072
@@ -700,6 +726,7 @@ static int z_stream_init(z_stream *stream, int gz_hdr)
 {
 	int wbits = 15;
 
+	memset(stream, 0, sizeof(*stream));
 	stream->zalloc = Z_NULL;
 	stream->zfree = Z_NULL;
 	stream->opaque = Z_NULL;
@@ -734,7 +761,8 @@ static void finish_chunk(z_stream *stream, FILE *f,
 
 	ret = inflateEnd(stream);
 	if (ret != Z_OK)
-		log_err("fio: failed to end log inflation (%d)\n", ret);
+		log_err("fio: failed to end log inflation seq %d (%d)\n",
+				iter->seq, ret);
 
 	flush_samples(f, iter->buf, iter->buf_used);
 	free(iter->buf);
@@ -751,7 +779,7 @@ static size_t inflate_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f,
 {
 	size_t ret;
 
-	dprint(FD_COMPRESS, "inflate chunk size=%lu, seq=%u",
+	dprint(FD_COMPRESS, "inflate chunk size=%lu, seq=%u\n",
 				(unsigned long) ic->len, ic->seq);
 
 	if (ic->seq != iter->seq) {
@@ -798,7 +826,7 @@ static size_t inflate_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f,
 
 	ret = (void *) stream->next_in - ic->buf;
 
-	dprint(FD_COMPRESS, "inflated to size=%lu\n", (unsigned long) ret);
+	dprint(FD_COMPRESS, "inflated to size=%lu\n", (unsigned long) iter->buf_size);
 
 	return ret;
 }
@@ -954,7 +982,14 @@ void flush_log(struct io_log *log, int do_append)
 
 	inflate_gz_chunks(log, f);
 
-	flush_samples(f, log->log, log->nr_samples * log_entry_sz(log));
+	while (!flist_empty(&log->io_logs)) {
+		struct io_logs *cur_log;
+
+		cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
+		flist_del_init(&cur_log->list);
+		flush_samples(f, cur_log->log, cur_log->nr_samples * log_entry_sz(log));
+		sfree(cur_log);
+	}
 
 	fclose(f);
 	clear_file_buffer(buf);
@@ -963,7 +998,7 @@ void flush_log(struct io_log *log, int do_append)
 static int finish_log(struct thread_data *td, struct io_log *log, int trylock)
 {
 	if (td->flags & TD_F_COMPRESS_LOG)
-		iolog_flush(log, 1);
+		iolog_flush(log);
 
 	if (trylock) {
 		if (fio_trylock_file(log->filename))
@@ -1005,7 +1040,7 @@ size_t log_chunk_sizes(struct io_log *log)
 
 static int gz_work(struct iolog_flush_data *data)
 {
-	struct iolog_compress *c;
+	struct iolog_compress *c = NULL;
 	struct flist_head list;
 	unsigned int seq;
 	z_stream stream;
@@ -1014,6 +1049,7 @@ static int gz_work(struct iolog_flush_data *data)
 
 	INIT_FLIST_HEAD(&list);
 
+	memset(&stream, 0, sizeof(stream));
 	stream.zalloc = Z_NULL;
 	stream.zfree = Z_NULL;
 	stream.opaque = Z_NULL;
@@ -1029,9 +1065,12 @@ static int gz_work(struct iolog_flush_data *data)
 	stream.next_in = (void *) data->samples;
 	stream.avail_in = data->nr_samples * log_entry_sz(data->log);
 
-	dprint(FD_COMPRESS, "deflate input size=%lu, seq=%u\n",
-				(unsigned long) stream.avail_in, seq);
+	dprint(FD_COMPRESS, "deflate input size=%lu, seq=%u, log=%s\n",
+				(unsigned long) stream.avail_in, seq,
+				data->log->filename);
 	do {
+		if (c)
+			dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
 		c = get_new_chunk(seq);
 		stream.avail_out = GZ_CHUNK;
 		stream.next_out = c->buf;
@@ -1051,9 +1090,26 @@ static int gz_work(struct iolog_flush_data *data)
 	stream.avail_out = GZ_CHUNK - c->len;
 
 	ret = deflate(&stream, Z_FINISH);
-	if (ret == Z_STREAM_END)
-		c->len = GZ_CHUNK - stream.avail_out;
-	else {
+	if (ret < 0) {
+		/*
+		 * Z_BUF_ERROR is special, it just means we need more
+		 * output space. We'll handle that below. Treat any other
+		 * error as fatal.
+		 */
+		if (ret != Z_BUF_ERROR) {
+			log_err("fio: deflate log (%d)\n", ret);
+			flist_del(&c->list);
+			free_chunk(c);
+			goto err;
+		}
+	}
+
+	total -= c->len;
+	c->len = GZ_CHUNK - stream.avail_out;
+	total += c->len;
+	dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
+
+	if (ret != Z_STREAM_END) {
 		do {
 			c = get_new_chunk(seq);
 			stream.avail_out = GZ_CHUNK;
@@ -1062,6 +1118,7 @@ static int gz_work(struct iolog_flush_data *data)
 			c->len = GZ_CHUNK - stream.avail_out;
 			total += c->len;
 			flist_add_tail(&c->list, &list);
+			dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
 		} while (ret != Z_STREAM_END);
 	}
 
@@ -1081,7 +1138,8 @@ static int gz_work(struct iolog_flush_data *data)
 
 	ret = 0;
 done:
-	free(data);
+	if (data->free)
+		free(data);
 	return ret;
 err:
 	while (!flist_empty(&list)) {
@@ -1145,39 +1203,69 @@ void iolog_compress_exit(struct thread_data *td)
  * Queue work item to compress the existing log entries. We reset the
  * current log to a small size, and reference the existing log in the
  * data that we queue for compression. Once compression has been done,
- * this old log is freed. If called with wait == 1, will not return until
- * the log compression has completed.
+ * this old log is freed. If called with finish == true, will not return
+ * until the log compression has completed, and will flush all previous
+ * logs too
  */
-int iolog_flush(struct io_log *log, int wait)
+static int iolog_flush(struct io_log *log)
 {
 	struct iolog_flush_data *data;
 
-	io_u_quiesce(log->td);
-
 	data = malloc(sizeof(*data));
 	if (!data)
 		return 1;
 
 	data->log = log;
+	data->free = false;
 
-	data->samples = log->log;
-	data->nr_samples = log->nr_samples;
+	while (!flist_empty(&log->io_logs)) {
+		struct io_logs *cur_log;
 
-	log->nr_samples = 0;
-	log->max_samples = DEF_LOG_ENTRIES;
-	log->log = malloc(log->max_samples * log_entry_sz(log));
+		cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
+		flist_del_init(&cur_log->list);
+
+		data->samples = cur_log->log;
+		data->nr_samples = cur_log->nr_samples;
+
+		cur_log->nr_samples = 0;
+		cur_log->max_samples = 0;
+		cur_log->log = NULL;
 
-	if (!wait)
-		workqueue_enqueue(&log->td->log_compress_wq, &data->work);
-	else
 		gz_work(data);
+	}
 
+	free(data);
 	return 0;
 }
 
+int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log)
+{
+	struct iolog_flush_data *data;
+
+	data = malloc(sizeof(*data));
+	if (!data)
+		return 1;
+
+	data->log = log;
+
+	data->samples = cur_log->log;
+	data->nr_samples = cur_log->nr_samples;
+	data->free = true;
+
+	cur_log->nr_samples = cur_log->max_samples = 0;
+	cur_log->log = NULL;
+
+	workqueue_enqueue(&log->td->log_compress_wq, &data->work);
+	return 0;
+}
 #else
 
-int iolog_flush(struct io_log *log, int wait)
+static int iolog_flush(struct io_log *log)
+{
+	return 1;
+}
+
+int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log)
 {
 	return 1;
 }
@@ -1193,6 +1281,29 @@ void iolog_compress_exit(struct thread_data *td)
 
 #endif
 
+struct io_logs *iolog_cur_log(struct io_log *log)
+{
+	if (flist_empty(&log->io_logs))
+		return NULL;
+
+	return flist_last_entry(&log->io_logs, struct io_logs, list);
+}
+
+uint64_t iolog_nr_samples(struct io_log *iolog)
+{
+	struct flist_head *entry;
+	uint64_t ret = 0;
+
+	flist_for_each(entry, &iolog->io_logs) {
+		struct io_logs *cur_log;
+
+		cur_log = flist_entry(entry, struct io_logs, list);
+		ret += cur_log->nr_samples;
+	}
+
+	return ret;
+}
+
 static int __write_log(struct thread_data *td, struct io_log *log, int try)
 {
 	if (log)