From: Cyril Hrubis <chrubis@suse.cz>
To: tangchen <tangchen@cn.fujitsu.com>
Cc: "ltp-list@lists.sourceforge.net" <ltp-list@lists.sourceforge.net>
Subject: Re: [LTP] [POSIX] [PATCH] sched_setscheduler/17-5.c: Add the missing scheduling policies.
Date: Thu, 18 Aug 2011 13:28:47 +0200 [thread overview]
Message-ID: <20110818112847.GB19491@saboteur.suse.cz> (raw)
In-Reply-To: <4E151B53.4050207@cn.fujitsu.com>
Hi!
> On linux, I found the scheduling policies are defined as follow:
>
> in /usr/include/bits/sched.h
>
> /* Scheduling algorithms. */
> #define SCHED_OTHER 0
> #define SCHED_FIFO 1
> #define SCHED_RR 2
> #ifdef __USE_GNU
> # define SCHED_BATCH 3
> # define SCHED_IDLE 5
>
> # define SCHED_RESET_ON_FORK 0x40000000
> #endif
>
> So besides SCHED_OTHER, SCHED_FIFO and SCHED_RR, there are another
> two policies, SCHED_BATCH and SCHED_IDLE. And 3 is a valid value
> for the scheduling policy, which causes the test returns UNSOLVED
> on linux system.
>
> Here is the patch, please comment!
> Thanks.:)
>
>
> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
> ---
> .../interfaces/sched_setscheduler/17-5.c | 11 ++++++++++-
> 1 files changed, 10 insertions(+), 1 deletions(-)
>
> diff --git a/testcases/open_posix_testsuite/conformance/interfaces/sched_setscheduler/17-5.c b/testcases/open_posix_testsuite/conformance/interfaces/sched_setscheduler/17-5.c
> index b4f90b3..652db27 100644
> --- a/testcases/open_posix_testsuite/conformance/interfaces/sched_setscheduler/17-5.c
> +++ b/testcases/open_posix_testsuite/conformance/interfaces/sched_setscheduler/17-5.c
> @@ -17,6 +17,11 @@
> * 2. Call sched_setscheduler with invalid args.
> * 3. Check that the policy and priority have not changed.
> */
> +
> +#ifdef __linux__
> +#define _GNU_SOURCE
> +#endif
> +
> #include <sched.h>
> #include <stdio.h>
> #include <errno.h>
> @@ -31,6 +36,10 @@ int main() {
> invalid_policy = 0;
> /* Linux does not treat minus value as invalid for policy */
> while (invalid_policy == SCHED_OTHER ||
> +#ifdef _GNU_SOURCE
> + invalid_policy == SCHED_BATCH ||
> + invalid_policy == SCHED_IDLE ||
> +#endif
> invalid_policy == SCHED_FIFO ||
> invalid_policy == SCHED_RR)
> invalid_policy++;
> @@ -78,4 +87,4 @@ int main() {
> printf("The policy has changed\n");
> }
> return PTS_FAIL;
> -}
> \ No newline at end of file
> +}
Meanwhile we changed the invalid policy to INT_MAX, which seems to work
fine. Thanks anyway.
--
Cyril Hrubis
chrubis@suse.cz
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parent reply other threads:[~2011-08-18 11:24 UTC|newest]
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