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arm64: frace: use asm EXPORT_SYMBOL() 

For a while now it's been possible to use EXPORT_SYMBOL() in assembly
files, which allows us to place exports immediately after assembly
functions, as we do for C functions.

As a step towards removing arm64ksyms.c, let's move the ftrace exports
to the assembly files the functions are defined in.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Mark Rutland 2018-12-07 18:08:22 +00:00 committed by Will Deacon
parent ac0e8c72b0
commit dbd3196299
2 changed files with 4 additions and 5 deletions
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5
arch/arm64/kernel/arm64ksyms.c
View File

@ -28,8 +28,3 @@
#include <asm/checksum.h>
#ifdef CONFIG_FUNCTION_TRACER
EXPORT_SYMBOL(_mcount);
NOKPROBE_SYMBOL(_mcount);
#endif

4
arch/arm64/kernel/entry-ftrace.S
View File

@ -120,6 +120,8 @@ skip_ftrace_call: // }
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
mcount_exit
ENDPROC(_mcount)
EXPORT_SYMBOL(_mcount)
NOKPROBE(_mcount)
#else /* CONFIG_DYNAMIC_FTRACE */
/*
@ -131,6 +133,8 @@ ENDPROC(_mcount)
ENTRY(_mcount)
ret
ENDPROC(_mcount)
EXPORT_SYMBOL(_mcount)
NOKPROBE(_mcount)
/*
* void ftrace_caller(unsigned long return_address)