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x86/asm/ftrace: Mark function_hook as function

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Relabel function_hook to be marked really as a function. It is called
from C and has the same expectations towards the stack etc.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: linux-arch@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20191011115108.12392-22-jslaby@suse.cz
This commit is contained in:
Jiri Slaby 2019-10-11 13:51:01 +02:00 committed by Borislav Petkov
parent ef1e03152c
commit f13ad88a98
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kernel/ftrace_32.S
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@ -21,9 +21,9 @@ EXPORT_SYMBOL(__fentry__)
# define MCOUNT_FRAME 0 /* using frame = false */
#endif
ENTRY(function_hook)
SYM_FUNC_START(function_hook)
ret
END(function_hook)
SYM_FUNC_END(function_hook)
ENTRY(ftrace_caller)