[LTP] [PATCH] msgget03: Set custom queue limit

[xuyang2018.jy@fujitsu.com]

Hi Martin

I don't have objection for this patch.

But I think using system custom max value is more meaningful. How about
setting timeout to 5min, I think it is enough.

Also shmget03 uses same logic, so I guess we need to modify it too.

Best Regards
Yang Xu
> The runtime limit patchset has reduced default test timeout to 30 seconds
> which is not enough for msgget03 on some archs. Set custom queue count
> limit to make the test faster.
>
> Signed-off-by: Martin Doucha<mdoucha@suse.cz>
> ---
>   testcases/kernel/syscalls/ipc/msgget/msgget03.c | 9 +++++++--
>   1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/ipc/msgget/msgget03.c b/testcases/kernel/syscalls/ipc/msgget/msgget03.c
> index 711886e17..2257ae0f9 100644
> --- a/testcases/kernel/syscalls/ipc/msgget/msgget03.c
> +++ b/testcases/kernel/syscalls/ipc/msgget/msgget03.c
> @@ -41,7 +41,8 @@ static void setup(void)
>   	tst_res(TINFO, "Current environment %d message queues are already in use",
>   		used_cnt);
>
> -	SAFE_FILE_SCANF("/proc/sys/kernel/msgmni", "%i",&maxmsgs);
> +	maxmsgs = used_cnt + 32;
> +	SAFE_FILE_PRINTF("/proc/sys/kernel/msgmni", "%i", maxmsgs);
>
>   	queues = SAFE_MALLOC((maxmsgs - used_cnt) * sizeof(int));
>
> @@ -73,5 +74,9 @@ static struct tst_test test = {
>   	.needs_tmpdir = 1,
>   	.setup = setup,
>   	.cleanup = cleanup,
> -	.test_all = verify_msgget
> +	.test_all = verify_msgget,
> +	.save_restore = (const struct tst_path_val[]){
> +		{"/proc/sys/kernel/msgmni", NULL},
> +		{}
> +	}
>   };