diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2020-05-21 22:05:24 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:15:07 +0200 |
| commit | eb6555c83933ce8e094d5429d57970aaa9f0591e (patch) | |
| tree | 6c146349fa462fb0a6a51a1920dfd87fe314c21e | |
| parent | x86/entry: Provide helpers for executing on the irqstack (diff) | |
| download | wireguard-linux-eb6555c83933ce8e094d5429d57970aaa9f0591e.tar.xz wireguard-linux-eb6555c83933ce8e094d5429d57970aaa9f0591e.zip | |
x86/entry/64: Move do_softirq_own_stack() to C
The first step to get rid of the ENTER/LEAVE_IRQ_STACK ASM macro maze. Use
the new C code helpers to move do_softirq_own_stack() out of ASM code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20200521202117.870911120@linutronix.de
| -rw-r--r-- | arch/x86/entry/entry_64.S | 13 | ||||
| -rw-r--r-- | arch/x86/kernel/irq_64.c | 6 |
2 files changed, 6 insertions, 13 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index 159737062611..6b518be4da0a 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -1145,19 +1145,6 @@ SYM_FUNC_START(asm_call_on_stack) ret SYM_FUNC_END(asm_call_on_stack) -/* Call softirq on interrupt stack. Interrupts are off. */ -.pushsection .text, "ax" -SYM_FUNC_START(do_softirq_own_stack) - pushq %rbp - mov %rsp, %rbp - ENTER_IRQ_STACK regs=0 old_rsp=%r11 - call __do_softirq - LEAVE_IRQ_STACK regs=0 - leaveq - ret -SYM_FUNC_END(do_softirq_own_stack) -.popsection - #ifdef CONFIG_XEN_PV /* * A note on the "critical region" in our callback handler. diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c index 6b32ab009c19..1b4fe93a86c5 100644 --- a/arch/x86/kernel/irq_64.c +++ b/arch/x86/kernel/irq_64.c @@ -20,6 +20,7 @@ #include <linux/sched/task_stack.h> #include <asm/cpu_entry_area.h> +#include <asm/irq_stack.h> #include <asm/io_apic.h> #include <asm/apic.h> @@ -70,3 +71,8 @@ int irq_init_percpu_irqstack(unsigned int cpu) return 0; return map_irq_stack(cpu); } + +void do_softirq_own_stack(void) +{ + run_on_irqstack_cond(__do_softirq, NULL, NULL); +} |