[tip: x86/entry] x86/softirq/64: Inline do_softirq_own_stack()

[tip-bot2 for Thomas Gleixner]

The following commit has been merged into the x86/entry branch of tip:

Commit-ID:     72f40a2823d6e16229ab58b898c6f22044e5222f
Gitweb:        https://git.kernel.org/tip/72f40a2823d6e16229ab58b898c6f22044e5222f
Author:        Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate:    Wed, 10 Feb 2021 00:40:54 +01:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Wed, 10 Feb 2021 23:34:17 +01:00

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@xxxxxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210210002513.382806685@xxxxxxxxxxxxx

---
 arch/x86/include/asm/irq_stack.h     |  3 +--
 arch/x86/include/asm/softirq_stack.h | 11 +++++++++++
 arch/x86/kernel/irq_64.c             |  5 -----
 3 files changed, 12 insertions(+), 7 deletions(-)
 create mode 100644 arch/x86/include/asm/softirq_stack.h

diff --git a/arch/x86/include/asm/irq_stack.h b/arch/x86/include/asm/irq_stack.h
index 1b82f92..9b2a0ff 100644
--- a/arch/x86/include/asm/irq_stack.h
+++ b/arch/x86/include/asm/irq_stack.h
@@ -194,7 +194,7 @@
  * 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);		\
@@ -202,7 +202,6 @@
 }
 
 #else /* CONFIG_X86_64 */
-
 /* System vector handlers always run on the stack they interrupted. */
 #define run_sysvec_on_irqstack_cond(func, regs)				\
 {									\
diff --git a/arch/x86/include/asm/softirq_stack.h b/arch/x86/include/asm/softirq_stack.h
new file mode 100644
index 0000000..889d53d
--- /dev/null
+++ b/arch/x86/include/asm/softirq_stack.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_SOFTIRQ_STACK_H
+#define _ASM_X86_SOFTIRQ_STACK_H
+
+#ifdef CONFIG_X86_64
+# include <asm/irq_stack.h>
+#else
+# include <asm-generic/softirq_stack.h>
+#endif
+
+#endif
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index f335c39..1c0fb96 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -74,8 +74,3 @@ int irq_init_percpu_irqstack(unsigned int cpu)
 		return 0;
 	return map_irq_stack(cpu);
 }
-
-void do_softirq_own_stack(void)
-{
-	run_softirq_on_irqstack();
-}