diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-10-15 21:18:04 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-12-08 14:37:35 +0100 |
| commit | fa686453053b70a8a01b7517df8cfc5872f63196 (patch) | |
| tree | 8ed6aae9b52e4366f0eb78f9e4e528002dd0fb5d /arch/s390 | |
| parent | 29ff64929e6caf3a6df8e719aa5b9dc36e8e407a (diff) | |
sched/rt, s390: Use CONFIG_PREEMPTION
CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by CONFIG_PREEMPT_RT.
Both PREEMPT and PREEMPT_RT require the same functionality which today
depends on CONFIG_PREEMPT.
Switch the preemption and entry code over to use CONFIG_PREEMPTION. Add
PREEMPT_RT output to die().
[bigeasy: +Kconfig, dumpstack.c]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Link: https://lore.kernel.org/r/20191015191821.11479-18-bigeasy@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/preempt.h | 4 | ||||
| -rw-r--r-- | arch/s390/kernel/dumpstack.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/entry.S | 2 |
4 files changed, 6 insertions, 4 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index d4051e88e625..62b10a301bd6 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -30,7 +30,7 @@ config GENERIC_BUG_RELATIVE_POINTERS def_bool y config GENERIC_LOCKBREAK - def_bool y if PREEMPT + def_bool y if PREEMPTTION config PGSTE def_bool y if KVM diff --git a/arch/s390/include/asm/preempt.h b/arch/s390/include/asm/preempt.h index b5ea9e14c017..6ede29907fbf 100644 --- a/arch/s390/include/asm/preempt.h +++ b/arch/s390/include/asm/preempt.h @@ -130,11 +130,11 @@ static inline bool should_resched(int preempt_offset) #endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */ -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION extern asmlinkage void preempt_schedule(void); #define __preempt_schedule() preempt_schedule() extern asmlinkage void preempt_schedule_notrace(void); #define __preempt_schedule_notrace() preempt_schedule_notrace() -#endif /* CONFIG_PREEMPT */ +#endif /* CONFIG_PREEMPTION */ #endif /* __ASM_PREEMPT_H */ diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index d306fe04489a..2c122d8bab93 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -195,6 +195,8 @@ void die(struct pt_regs *regs, const char *str) regs->int_code >> 17, ++die_counter); #ifdef CONFIG_PREEMPT pr_cont("PREEMPT "); +#elif defined(CONFIG_PREEMPT_RT) + pr_cont("PREEMPT_RT "); #endif pr_cont("SMP "); if (debug_pagealloc_enabled()) diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 270d1d145761..9205add8481d 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -790,7 +790,7 @@ ENTRY(io_int_handler) .Lio_work: tm __PT_PSW+1(%r11),0x01 # returning to user ? jo .Lio_work_user # yes -> do resched & signal -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION # check for preemptive scheduling icm %r0,15,__LC_PREEMPT_COUNT jnz .Lio_restore # preemption is disabled |