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x86/entry: Merge thunk_64.S and thunk_32.S into thunk.S

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The code in thunk_64.S and thunk_32.S are exactly the same except for
the comments. Merge them in to thunk.S.

And since thunk_32.S was originated from thunk_64.S, the new merged
thunk.S is actually renamed from thunk_64.S.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240407090558.3395-9-jiangshanlai@gmail.com
This commit is contained in:
Lai Jiangshan 2024-04-07 17:05:55 +08:00 committed by Ingo Molnar
parent fec50db703
commit b767fe5de0
3 changed files with 1 additions and 19 deletions
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2
arch/x86/entry/Makefile
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@ -17,7 +17,7 @@ obj-y += common.o
obj-y += vdso/
obj-y += vsyscall/
obj-$(CONFIG_PREEMPTION) += thunk_$(BITS).o
obj-$(CONFIG_PREEMPTION) += thunk.o
CFLAGS_entry_fred.o += -fno-stack-protector
CFLAGS_REMOVE_entry_fred.o += -pg $(CC_FLAGS_FTRACE)
obj-$(CONFIG_X86_FRED) += entry_64_fred.o entry_fred.o

0
arch/x86/entry/thunk_64.S → arch/x86/entry/thunk.S
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18
arch/x86/entry/thunk_32.S
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@ -1,18 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash)
* Copyright 2008 by Steven Rostedt, Red Hat, Inc
* (inspired by Andi Kleen's thunk_64.S)
*/
#include <linux/export.h>
#include <linux/linkage.h>
#include <asm/asm.h>
#include "calling.h"
THUNK preempt_schedule_thunk, preempt_schedule
THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace
EXPORT_SYMBOL(preempt_schedule_thunk)
EXPORT_SYMBOL(preempt_schedule_notrace_thunk)