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Update usage(..)

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- Document missing options
- Sync options with ioatcontrol(8).
- Make it clear that the first 2 parameters are always required.

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
This commit is contained in:
Enji Cooper 2016-05-27 21:12:25 +00:00
parent 09210a281c
commit 1874b317e1
1 changed files with 11 additions and 6 deletions
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17
tools/tools/ioat/ioatcontrol.c
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@ -49,14 +49,19 @@ static void
usage(void)
{
printf("Usage: %s [-E|-f|-m] OPTIONS <channel #> <txns> [<bufsize> "
printf("Usage: %s [-c period] [-EfmVz] channel-number num-txns [<bufsize> "
"[<chain-len> [duration]]]\n", getprogname());
printf(" %s -r [-v] OPTIONS <channel #> <addr> [<bufsize>]\n\n",
printf(" %s -r [-c period] [-vVwz] channel-number address [<bufsize>]\n\n",
getprogname());
printf(" OPTIONS:\n");
printf(" -c <period> - Enable interrupt coalescing (us)\n");
printf(" -V - Enable verification\n");
printf(" -z - Zero device stats before test\n");
printf(" -c period - Enable interrupt coalescing (us) (default: 0)\n");
printf(" -E - Test non-contiguous 8k copy.\n");
printf(" -f - Test block fill (default: DMA copy).\n");
printf(" -m - Test memcpy instead of DMA.\n");
printf(" -r - Issue DMA to or from a specific address.\n");
printf(" -V - Enable verification\n");
printf(" -v - <address> is a kernel virtual address\n");
printf(" -w - Write to the specified address\n");
printf(" -z - Zero device stats before test\n");
exit(EX_USAGE);
}