[tip: x86/entry] x86/irq: Use generic irq_regs implementation

[tip-bot2 for Thomas Gleixner]

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

Commit-ID:     359763a015a4bc3ac9899bf8a3ea97dae91c8e2a
Gitweb:        https://git.kernel.org/tip/359763a015a4bc3ac9899bf8a3ea97dae91c8e2a
Author:        Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate:    Thu, 21 May 2020 22:05:33 +02:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Tue, 26 May 2020 19:06:28 +02:00

x86/irq: Use generic irq_regs implementation

The only difference is the name of the per-CPU variable: irq_regs
vs. __irq_regs, but the accessor functions are identical.

Remove the pointless copy and use the generic variant.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Andy Lutomirski <luto@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200521202118.704169051@xxxxxxxxxxxxx
---
 arch/x86/include/asm/irq_regs.h | 32 +--------------------------------
 arch/x86/kernel/irq.c           |  3 +---
 2 files changed, 35 deletions(-)
 delete mode 100644 arch/x86/include/asm/irq_regs.h

diff --git a/arch/x86/include/asm/irq_regs.h b/arch/x86/include/asm/irq_regs.h
deleted file mode 100644
index 187ce59..0000000
--- a/arch/x86/include/asm/irq_regs.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Per-cpu current frame pointer - the location of the last exception frame on
- * the stack, stored in the per-cpu area.
- *
- * Jeremy Fitzhardinge <jeremy@xxxxxxxx>
- */
-#ifndef _ASM_X86_IRQ_REGS_H
-#define _ASM_X86_IRQ_REGS_H
-
-#include <asm/percpu.h>
-
-#define ARCH_HAS_OWN_IRQ_REGS
-
-DECLARE_PER_CPU(struct pt_regs *, irq_regs);
-
-static inline struct pt_regs *get_irq_regs(void)
-{
-	return __this_cpu_read(irq_regs);
-}
-
-static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
-{
-	struct pt_regs *old_regs;
-
-	old_regs = get_irq_regs();
-	__this_cpu_write(irq_regs, new_regs);
-
-	return old_regs;
-}
-
-#endif /* _ASM_X86_IRQ_REGS_32_H */
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index c7965ff..252065d 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -26,9 +26,6 @@
 DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
 EXPORT_PER_CPU_SYMBOL(irq_stat);
 
-DEFINE_PER_CPU(struct pt_regs *, irq_regs);
-EXPORT_PER_CPU_SYMBOL(irq_regs);
-
 atomic_t irq_err_count;
 
 /*