Added in -L option - output periodic latency information

[blktrace.git] / btt / args.c

diff --git a/btt/args.c b/btt/args.c
index 2cbbf543cf62839a0816c6e444ed1eb17efb4791..db4186eea088cbc7f5fc522c0f249dd6e4a53d37 100644 (file)
--- a/btt/args.c
+++ b/btt/args.c
@@ -29,7 +29,7 @@
 
 #define SETBUFFER_SIZE (64 * 1024)
 
-#define S_OPTS "aAB:d:D:e:hi:I:l:m:M:o:p:q:Q:s:S:t:T:u:VvX"
+#define S_OPTS "aAB:d:D:e:hi:I:l:L:m:M:o:p:q:Q:s:S:t:T:u:VvX"
 static struct option l_opts[] = {
        {
                .name = "seek-absolute",
@@ -91,6 +91,12 @@ static struct option l_opts[] = {
                .flag = NULL,
                .val = 'l'
        },
+       {
+               .name = "periodic-latencies",
+               .has_arg = required_argument,
+               .flag = NULL,
+               .val = 'L'
+       },
        {
                .name = "seeks-per-second",
                .has_arg = required_argument,
@@ -191,6 +197,7 @@ static char usage_str[] = \
        "[ -i <input name>  | --input-file=<input name> ]\n" \
        "[ -I <output name> | --iostat=<output name> ]\n" \
        "[ -l <output name> | --d2c-latencies=<output name> ]\n" \
+       "[ -L <freq>        | --periodic-latencies=<freq> ]\n" \
        "[ -m <output name> | --seeks-per-second=<output name> ]\n" \
        "[ -M <dev map>     | --dev-maps=<dev map>\n" \
        "[ -o <output name> | --output-file=<output name> ]\n" \
@@ -275,6 +282,9 @@ void handle_args(int argc, char *argv[])
                case 'l':
                        d2c_name = strdup(optarg);
                        break;
+               case 'L':
+                       plat_freq = atof(optarg);
+                       break;
                case 'I':
                        iostat_name = strdup(optarg);
                        break;