On Tue, Dec 06, 2016 at 09:52:09PM -0500, Robert Foss wrote:
> Add igt_require_sw_sync to provide tests to skip if sw_sync support isn't
> available on the host machine.
> 
> Signed-off-by: Robert Foss <[email protected]>
> Reviewed-by: Tomeu Vizoso <[email protected]>
> ---
>  lib/sw_sync.c | 22 ++++++++++++++++++++++
>  lib/sw_sync.h |  1 +
>  2 files changed, 23 insertions(+)
> 
> diff --git a/lib/sw_sync.c b/lib/sw_sync.c
> index a2168f78..d4ecc898 100644
> --- a/lib/sw_sync.c
> +++ b/lib/sw_sync.c
> @@ -194,3 +194,25 @@ int sync_fence_count_status(int fd, int status)
>       igt_assert_f(count >= 0, "No fences with supplied status found");
>       return count;
>  }
> +
> +static bool kernel_has_sw_sync(void)
> +{
> +     bool err;
> +
> +     igt_ignore_warn(system("/sbin/modprobe -s r sw_sync"));
> +
> +     err = false;
> +     if (access(DEVFS_SW_SYNC, R_OK | W_OK) < 0) {
> +             char buf[128];
> +
> +             snprintf(buf, sizeof(buf), "%s/sw_sync", igt_debugfs_mount());
> +             err = access(DEBUGFS_SW_SYNC, R_OK | W_OK) < 0;
> +     }


Did you mean access(buf, R_OK | W_OK) here?


--
Petri Latvala
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