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@xxxxxxxxxxxxx>
> ---
> 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....
