aleph/lkl_linux
1
0
Fork 0
mirror of https://github.com/lkl/linux.git synced 2025-12-19 08:03:01 +09:00
Code Issues Packages Projects Releases Wiki Activity

arch/*: Disable softirq stacks on PREEMPT_RT.

Browse Source 
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 save some memory and
ensure that do_softirq_own_stack() is not used bwcause it is not expected.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Sebastian Andrzej Siewior
2022-06-14 20:18:14 +02:00
committed by Arnd Bergmann
parent b13baccc38
commit f2c5092190
7 changed files with 15 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/asm-generic/softirq_stack.h
View File

@@ -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)