linux-kernel - [patch 12/12] x86/softirq/64: Inline do_softirq_own

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Date:   Thu, 04 Feb 2021 21:49:15 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Josh Poimboeuf <jpoimboe@...hat.com>,
        Kees Cook <keescook@...omium.org>
Subject: [patch 12/12] x86/softirq/64: Inline do_softirq_own_stack()

There is no reason to have this as a seperate function for a single caller.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/include/asm/irq.h       |    3 +++
 arch/x86/include/asm/irq_stack.h |    3 +--
 arch/x86/kernel/irq_64.c         |    5 -----
 3 files changed, 4 insertions(+), 7 deletions(-)

--- a/arch/x86/include/asm/irq.h
+++ b/arch/x86/include/asm/irq.h
@@ -26,6 +26,9 @@ static inline int irq_canonicalize(int i
 extern int irq_init_percpu_irqstack(unsigned int cpu);
 
 #define __ARCH_HAS_DO_SOFTIRQ
+#ifdef CONFIG_X86_64
+#define __ARCH_HAS_DO_SOFTIRQ_INLINE
+#endif
 
 struct irq_desc;
 
--- a/arch/x86/include/asm/irq_stack.h
+++ b/arch/x86/include/asm/irq_stack.h
@@ -200,7 +200,7 @@
  * interrupts are pending to be processed. The interrupt stack cannot be in
  * use here.
  */
-#define run_softirq_on_irqstack()					\
+#define do_softirq_own_stack()						\
 {									\
 	__this_cpu_write(hardirq_stack_inuse, true);			\
 	__call_on_irqstack(__do_softirq, ASM_CALL_SOFTIRQ);		\
@@ -208,7 +208,6 @@
 }
 
 #else /* CONFIG_X86_64 */
-
 /* System vector handlers always run on the stack they interrupted. */
 #define run_sysvec_on_irqstack_cond(func, regs)				\
 {									\
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -73,8 +73,3 @@ int irq_init_percpu_irqstack(unsigned in
 		return 0;
 	return map_irq_stack(cpu);
 }
-
-void do_softirq_own_stack(void)
-{
-	run_softirq_on_irqstack();
-}