diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2021-09-24 18:05:48 +0300 |
|---|---|---|
| committer | Minda Chen <minda.chen@starfivetech.com> | 2023-11-06 14:24:49 +0300 |
| commit | 1bd9479c50b6cb6c590dc8ddcc469cd2b7bd3b5d (patch) | |
| tree | aeed2d307d45d22d918c11242d392df9b5ff80d5 | |
| parent | b2ca02aef571f2e348a5ca7e318e1f06b50b66d4 (diff) | |
| download | linux-1bd9479c50b6cb6c590dc8ddcc469cd2b7bd3b5d.tar.xz | |
generic/softirq: Disable softirq stacks on PREEMPT_RT
PREEMPT_RT preempts softirqs and the current implementation avoids
do_softirq_own_stack() and only uses __do_softirq().
Disable the unused softirqs stacks on PREEMPT_RT to safe some memory and
ensure that do_softirq_own_stack() is not used which is not expected.
[bigeasy: commit description.]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
| -rw-r--r-- | include/asm-generic/softirq_stack.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/softirq_stack.h b/include/asm-generic/softirq_stack.h index eceeecf6a5bd..d3e2d81656e0 100644 --- a/include/asm-generic/softirq_stack.h +++ b/include/asm-generic/softirq_stack.h @@ -2,7 +2,7 @@ #ifndef __ASM_GENERIC_SOFTIRQ_STACK_H #define __ASM_GENERIC_SOFTIRQ_STACK_H -#ifdef CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK +#if defined(CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK) && !defined(CONFIG_PREEMPT_RT) void do_softirq_own_stack(void); #else static inline void do_softirq_own_stack(void) |