diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-07-18 13:59:17 +0200 |
|---|---|---|
| committer | Anders Roxell <anders.roxell@linaro.org> | 2015-08-17 08:59:14 +0200 |
| commit | c19e96c658b12b553658a86309a97eca9f70a689 (patch) | |
| tree | 737ab38297f7f66e620e66b597f61534ea520b06 /arch/x86 | |
| parent | b4bcc32adcbca10ac63f9364c33952313d19a20c (diff) | |
softirq: Disable softirq stacks for RT
Disable extra stacks for softirqs. We want to preempt softirqs and
having them on special IRQ-stack does not make this easier.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/entry_64.S | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/irq_32.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 02c2eff7478d..486de7d220fd 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -1120,6 +1120,7 @@ bad_gs: jmp 2b .previous +#ifndef CONFIG_PREEMPT_RT_FULL /* Call softirq on interrupt stack. Interrupts are off. */ ENTRY(do_softirq_own_stack) CFI_STARTPROC @@ -1139,6 +1140,7 @@ ENTRY(do_softirq_own_stack) ret CFI_ENDPROC END(do_softirq_own_stack) +#endif #ifdef CONFIG_XEN idtentry xen_hypervisor_callback xen_do_hypervisor_callback has_error_code=0 diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c index f9fd86a7fcc7..521ef3cc8066 100644 --- a/arch/x86/kernel/irq_32.c +++ b/arch/x86/kernel/irq_32.c @@ -135,6 +135,7 @@ void irq_ctx_init(int cpu) cpu, per_cpu(hardirq_stack, cpu), per_cpu(softirq_stack, cpu)); } +#ifndef CONFIG_PREEMPT_RT_FULL void do_softirq_own_stack(void) { struct thread_info *curstk; @@ -153,6 +154,7 @@ void do_softirq_own_stack(void) call_on_stack(__do_softirq, isp); } +#endif bool handle_irq(unsigned irq, struct pt_regs *regs) { |