flashbench: allow passing an erase block size
This is currently unused, but will be used to simplify
running the programmed tests.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/flashbench.c b/flashbench.c
index b7c64dd..48136e8 100644
--- a/flashbench.c
+++ b/flashbench.c
@@ -634,9 +634,12 @@
printf("-o, --out=FILE write output to FILE instead of stdout\n");
printf("-s, --scatter run scatter read test\n");
printf(" --scatter-order=N scatter across 2^N blocks\n");
+ printf(" --scatter-span=N span each write across N blocks\n");
printf("-r, --rcache determine read cache size\n");
printf("-v, --verbose increase verbosity of output\n");
- printf("-c, --count=N run each test N times (default: 8\n");
+ printf("-c, --count=N run each test N times (default: 8\n");
+ printf("-b, --blocksize=N use a blocksize of N (default:16K)\n");
+ printf("-e, --erasesize=N use a eraseblocksize of N (default:4M)\n");
}
struct arguments {
@@ -645,6 +648,7 @@
bool scatter, rcache, align, interval, program;
int count;
int blocksize;
+ int erasesize;
int scatter_order;
int scatter_span;
int interval_order;
@@ -664,14 +668,16 @@
{ "verbose", 0, NULL, 'v' },
{ "count", 1, NULL, 'c' },
{ "blocksize", 1, NULL, 'b' },
+ { "erasesize", 1, NULL, 'e' },
{ NULL, 0, NULL, 0 },
};
memset(args, 0, sizeof(*args));
args->count = 8;
- args->scatter_order = 12;
- args->scatter_span = 8;
- args->blocksize = 8192;
+ args->scatter_order = 9;
+ args->scatter_span = 1;
+ args->blocksize = 16384;
+ args->erasesize = 4 * 1024 * 1024;
while (1) {
int c;
@@ -730,6 +736,10 @@
args->blocksize = atoi(optarg);
break;
+ case 'e':
+ args->erasesize = atoi(optarg);
+ break;
+
case '?':
print_help(argv[0]);
return -EINVAL;
