From: Christian Borntraeger <borntraeger@de•ibm.com>
To: Sven Schnelle <svens@linux•ibm.com>,
Stephen Rothwell <sfr@canb•auug.org.au>
Cc: Linux Next Mailing List <linux-next@vger•kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger•kernel.org>,
Heiko Carstens <hca@linux•ibm.com>,
Vasily Gorbik <gor@linux•ibm.com>,
Thomas Gleixner <tglx@linutronix•de>,
Frederic Weisbecker <frederic@kernel•org>,
"Paul E. McKenney" <paulmck@kernel•org>
Subject: Re: [PATCH] s390: allow reschedule on syscall restart
Date: Tue, 26 Jan 2021 07:59:51 +0100 [thread overview]
Message-ID: <a522c1ac-703a-ba99-c44c-3dd09e4cc4be@de.ibm.com> (raw)
In-Reply-To: <20210121143926.21440-2-svens@linux.ibm.com>
On 21.01.21 15:39, Sven Schnelle wrote:
> Commit 845f44e8ef28 ("sched: Report local wake up on resched blind zone
> within idle loop") from next-20210121 causes a warning because s390
> doesn't call sched_resched_local_allow() when restarting a syscall.
>
> Signed-off-by: Sven Schnelle <svens@linux•ibm.com>
> ---
> arch/s390/kernel/syscall.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/s390/kernel/syscall.c b/arch/s390/kernel/syscall.c
> index bc8e650e377d..2b39ac40f970 100644
> --- a/arch/s390/kernel/syscall.c
> +++ b/arch/s390/kernel/syscall.c
> @@ -162,6 +162,7 @@ void noinstr __do_syscall(struct pt_regs *regs, int per_trap)
> do_syscall(regs);
> if (!test_pt_regs_flag(regs, PIF_SYSCALL_RESTART))
> break;
> + sched_resched_local_allow();
> local_irq_enable();
> }
> exit_to_user_mode();
Yesterdays next now fails with
arch/s390/kernel/syscall.c: In function '__do_syscall':
arch/s390/kernel/syscall.c:165:3: error: implicit declaration of function 'sched_resched_local_allow' [-Werror=implicit-function-declaration]
165 | sched_resched_local_allow();
| ^~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:288: arch/s390/kernel/syscall.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [scripts/Makefile.build:530: arch/s390/kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
next prev parent reply other threads:[~2021-01-26 7:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-21 14:39 Warning with next-20210121 on s390 Sven Schnelle
2021-01-21 14:39 ` [PATCH] s390: allow reschedule on syscall restart Sven Schnelle
2021-01-21 21:32 ` Stephen Rothwell
2021-01-21 21:43 ` Paul E. McKenney
2021-01-21 22:31 ` Stephen Rothwell
2021-01-26 6:59 ` Christian Borntraeger [this message]
2021-01-26 9:39 ` Sven Schnelle
2021-01-26 10:25 ` Stephen Rothwell
2021-01-26 15:12 ` Paul E. McKenney
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