X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=file.h;h=0cf622fcbb213a7922ecb96a8e7b7f88bd76b2f2;hb=d454a205f81e1b122020cb4fb469c5a0c9d3195f;hp=a631766488fca12fbe40934def5d258f835d8f21;hpb=a3f001f5f679ae4efc5f34f682b16a2673ec2bac;p=fio.git

diff --git a/file.h b/file.h
index a6317664..0cf622fc 100644
--- a/file.h
+++ b/file.h
@@ -39,13 +39,20 @@ enum file_lock_mode {
 };
 
 /*
- * roundrobin available files, or choose one at random, or do each one
- * serially.
+ * How fio chooses what file to service next. Choice of uniformly random, or
+ * some skewed random variants, or just sequentially go through them or
+ * roundrobing.
  */
 enum {
-	FIO_FSERVICE_RANDOM	= 1,
-	FIO_FSERVICE_RR		= 2,
-	FIO_FSERVICE_SEQ	= 3,
+	FIO_FSERVICE_RANDOM		= 1,
+	FIO_FSERVICE_RR			= 2,
+	FIO_FSERVICE_SEQ		= 3,
+	__FIO_FSERVICE_NONUNIFORM	= 0x100,
+	FIO_FSERVICE_ZIPF		= __FIO_FSERVICE_NONUNIFORM | 4,
+	FIO_FSERVICE_PARETO		= __FIO_FSERVICE_NONUNIFORM | 5,
+	FIO_FSERVICE_GAUSS		= __FIO_FSERVICE_NONUNIFORM | 6,
+
+	FIO_FSERVICE_SHIFT		= 10,
 };
 
 /*
@@ -97,6 +104,13 @@ struct fio_file {
 	uint64_t first_write;
 	uint64_t last_write;
 
+	/*
+	 * Tracks the last iodepth number of completed writes, if data
+	 * verification is enabled
+	 */
+	uint64_t *last_write_comp;
+	unsigned int last_write_idx;
+
 	/*
 	 * For use by the io engine
 	 */