X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=filesetup.c;h=9fb325bd18b392f1c1419a01a6518b34da6d90fb;hb=1cad7121e8e6c59440ae43545be05fa302e4110d;hp=9679c88d28245f287d64f13092a72631f7121fca;hpb=eebd2f2d8a022a248acac5685f73665aa0c6ee99;p=fio.git

diff --git a/filesetup.c b/filesetup.c
index 9679c88d..9fb325bd 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -12,6 +12,8 @@
 #include "smalloc.h"
 #include "filehash.h"
 #include "os/os.h"
+#include "hash.h"
+#include "lib/axmap.h"
 
 #ifdef FIO_HAVE_LINUX_FALLOCATE
 #include <linux/falloc.h>
@@ -862,28 +864,68 @@ int pre_read_files(struct thread_data *td)
 	return 1;
 }
 
+static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
+{
+	unsigned int range_size, seed;
+	unsigned long nranges;
+
+	range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
+
+	nranges = (f->real_file_size + range_size - 1) / range_size;
+
+	seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
+	if (!td->o.rand_repeatable)
+		seed = td->rand_seeds[4];
+
+	if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
+		zipf_init(&f->zipf, nranges, td->o.zipf_theta, seed);
+	else
+		pareto_init(&f->zipf, nranges, td->o.pareto_h, seed);
+
+	return 1;
+}
+
+static int init_rand_distribution(struct thread_data *td)
+{
+	struct fio_file *f;
+	unsigned int i;
+	int state;
+
+	if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
+		return 0;
+
+	state = td->runstate;
+	td_set_runstate(td, TD_SETTING_UP);
+	for_each_file(td, f, i)
+		__init_rand_distribution(td, f);
+	td_set_runstate(td, state);
+
+	return 1;
+}
+
 int init_random_map(struct thread_data *td)
 {
-	unsigned long long blocks, num_maps;
+	unsigned long long blocks;
 	struct fio_file *f;
 	unsigned int i;
 
-	if (td->o.norandommap || !td_random(td))
+	if (init_rand_distribution(td))
+		return 0;
+	if (!td_random(td))
 		return 0;
 
 	for_each_file(td, f, i) {
 		blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
 				(unsigned long long) td->o.rw_min_bs;
-		num_maps = (blocks + BLOCKS_PER_MAP - 1) /
-				(unsigned long long) BLOCKS_PER_MAP;
-		if (num_maps == (unsigned long) num_maps) {
-			f->file_map = smalloc(num_maps * sizeof(unsigned long));
-			if (f->file_map) {
-				f->num_maps = num_maps;
+		if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
+			if (!lfsr_init(&f->lfsr, blocks))
 				continue;
-			}
-		} else
-			f->file_map = NULL;
+		} else if (!td->o.norandommap) {
+			f->io_axmap = axmap_new(blocks);
+			if (f->io_axmap)
+				continue;
+		} else if (td->o.norandommap)
+			continue;
 
 		if (!td->o.softrandommap) {
 			log_err("fio: failed allocating random map. If running"
@@ -895,7 +937,6 @@ int init_random_map(struct thread_data *td)
 
 		log_info("fio: file %s failed allocating random map. Running "
 			 "job without.\n", f->file_name);
-		f->num_maps = 0;
 	}
 
 	return 0;
@@ -932,8 +973,8 @@ void close_and_free_files(struct thread_data *td)
 
 		sfree(f->file_name);
 		f->file_name = NULL;
-		sfree(f->file_map);
-		f->file_map = NULL;
+		axmap_free(f->io_axmap);
+		f->io_axmap = NULL;
 		sfree(f);
 	}