On Tue, 4 Sep 2018, Marcelo Tosatti wrote:
> Add -h (help) option to queuelat, which lists all
> options.
>
> Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
>
> ---
> src/queuelat/README | 1 +
> src/queuelat/queuelat.c | 17 ++++++++++++++++-
> 2 files changed, 17 insertions(+), 1 deletion(-)
>
> Index: rt-tests/src/queuelat/README
> ===================================================================
> --- rt-tests.orig/src/queuelat/README 2018-09-03 16:31:38.578945651 -0300
> +++ rt-tests/src/queuelat/README 2018-09-03 16:31:56.083000015 -0300
> @@ -51,6 +51,7 @@
> mpps(million-packet-per-sec): million packets per second (float).
> tsc_freq_mhz: TSC frequency in MHz, as measured by TSC PIT calibration
> (search for "Detected XXX MHz processor" in dmesg, and use the integer part).
> +timeout: timeout (in seconds).
>
> How it works
> ============
> Index: rt-tests/src/queuelat/queuelat.c
> ===================================================================
> --- rt-tests.orig/src/queuelat/queuelat.c 2018-09-03 16:31:38.578945651 -0300
> +++ rt-tests/src/queuelat/queuelat.c 2018-09-03 16:31:56.084000018 -0300
> @@ -532,6 +532,18 @@
> return nr_packets_drain_per_block;
> }
>
> +
> +void print_help(void)
> +{
> + printf("usage: queuelat [options]\n");
> + printf("-h show this help menu\n");
> + printf("-m max-queue-len (maximum latency allowed, in nanoseconds) (int)\n");
> + printf("-c cycles-per-packet (number of cycles to process one packet (int)\n");
> + printf("-p million-packet-per-sec (million packets per second) (float)\n");
> + printf("-f tsc-freq-mhz (TSC frequency in MHz) (float)\n");
> + printf("-t timeout (timeout, in seconds) (int)\n");
> +}
> +
> int main(int argc, char **argv)
> {
> double tsc_freq_mhz;
> @@ -549,7 +561,7 @@
>
> opterr = 0;
>
> - while ((c = getopt (argc, argv, "m:c:p:f:t:q:")) != -1)
> + while ((c = getopt (argc, argv, "m:c:p:f:t:q:h")) != -1)
> switch (c)
> {
> case 'm':
> @@ -570,6 +582,9 @@
> case 'q':
> qvalue = optarg;
> break;
> + case 'h':
> + print_help();
> + return 0;
> case '?':
> if (optopt == 'm' || optopt == 'c' || optopt == 'p' ||
> optopt == 'f' || optopt == 't' || optopt == 'q')
>
>
>
Signed-off-by: John Kacur <jkacur@xxxxxxxxxx
