X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fio.h;h=15ab308488c23b1f6608e1f682d70a4696adc506;hp=139b9383f9fbd3ebaf1598b77ecbce244926465a;hb=e25839d4cb5fefcb5ffce76128a4faedb177e7af;hpb=155015351132ad00e2e21cb63f52fee91e56e92a

diff --git a/fio.h b/fio.h
index 139b9383..15ab3084 100644
--- a/fio.h
+++ b/fio.h
@@ -39,6 +39,7 @@ struct thread_data;
 #include "server.h"
 #include "stat.h"
 #include "flow.h"
+#include "lib/zipf.h"
 
 #ifdef FIO_HAVE_GUASI
 #include <guasi.h>
@@ -177,6 +178,9 @@ struct thread_options {
 	unsigned int bs_unaligned;
 	unsigned int fsync_on_close;
 
+	unsigned int random_distribution;
+	double zipf_theta;
+
 	unsigned int hugepage_size;
 	unsigned int rw_min_bs;
 	unsigned int thinktime;
@@ -452,6 +456,11 @@ struct thread_data {
 		struct frand_state __random_state;
 	};
 
+	/*
+	 * Used for zipf random distribution
+	 */
+	struct zipf_state zipf;
+
 	struct timeval start;	/* start of this loop */
 	struct timeval epoch;	/* time job was started */
 	struct timeval last_issue;
@@ -815,4 +824,9 @@ enum {
 	FIO_OUTPUT_NORMAL,
 };
 
+enum {
+	FIO_RAND_DIST_RANDOM	= 0,
+	FIO_RAND_DIST_ZIPF,
+};
+
 #endif