diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-10-15 21:17:48 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-12-08 14:37:32 +0100 |
| commit | e7289c6de81c8e8991148e46c9ab43e2d23940f3 (patch) | |
| tree | a9368c6fa360c1ebc06b5431fa66581c86446803 /arch/arm/mm/cache-v7.S | |
| parent | 4f797f56c3786e2c6bc542b3f80e9a599b073976 (diff) | |
| download | linux-e7289c6de81c8e8991148e46c9ab43e2d23940f3.tar.bz2 | |
sched/rt, ARM: 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 entry code, cache over to use CONFIG_PREEMPTION and add output
in show_stack() for PREEMPT_RT.
[bigeasy: +traps.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: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20191015191821.11479-2-bigeasy@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/mm/cache-v7.S')
| -rw-r--r-- | arch/arm/mm/cache-v7.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 0ee8fc4b4672..dc8f152f3556 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -135,13 +135,13 @@ flush_levels: and r1, r1, #7 @ mask of the bits for current cache only cmp r1, #2 @ see what cache we have at this level blt skip @ skip if no cache, or just i-cache -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION save_and_disable_irqs_notrace r9 @ make cssr&csidr read atomic #endif mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr isb @ isb to sych the new cssr&csidr mrc p15, 1, r1, c0, c0, 0 @ read the new csidr -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION restore_irqs_notrace r9 #endif and r2, r1, #7 @ extract the length of the cache lines |