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From: Harvey Harrison <>
To: Masami Hiramatsu <>
Cc: Ingo Molnar <>, Thomas Gleixner <>,
	"H. Peter Anvin" <>,
	LKML <>
Subject: [PATCH] kprobes: remove sparse warnings from x86
Date: Wed, 13 Feb 2008 15:30:33 -0800	[thread overview]
Message-ID: <1202945433.18204.28.camel@brick> (raw)

arch/x86/kernel/kprobes.c:584:16: warning: symbol 'kretprobe_trampoline_holder' was not declared. Should it be static?
arch/x86/kernel/kprobes.c:676:6: warning: symbol 'trampoline_handler' was not declared. Should it be static?

Make them static and add the __used attribute, approach taken from the
arm kprobes implementation.

kretprobe_trampoline_holder uses inline assemly to define the global
symbol kretprobe_trampoline, but nothing ever calls the holder explicitly.

trampoline handler is only called from inline assembly in the same file,
mark it used and static.

Signed-off-by: Harvey Harrison <>
 arch/x86/kernel/kprobes.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
index a99e764..34a5912 100644
--- a/arch/x86/kernel/kprobes.c
+++ b/arch/x86/kernel/kprobes.c
@@ -581,7 +581,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
  * When a retprobed function returns, this code saves registers and
  * calls trampoline_handler() runs, which calls the kretprobe's handler.
-void __kprobes kretprobe_trampoline_holder(void)
+static void __used __kprobes kretprobe_trampoline_holder(void)
 	asm volatile (
 			".global kretprobe_trampoline\n"
@@ -673,7 +673,7 @@ void __kprobes kretprobe_trampoline_holder(void)
  * Called from kretprobe_trampoline
-void * __kprobes trampoline_handler(struct pt_regs *regs)
+static __used __kprobes void *trampoline_handler(struct pt_regs *regs)
 	struct kretprobe_instance *ri = NULL;
 	struct hlist_head *head, empty_rp;

             reply	other threads:[~2008-02-13 23:30 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-13 23:30 Harvey Harrison [this message]
2008-02-14 15:08 ` Masami Hiramatsu
2008-02-14 18:01   ` Harvey Harrison
2008-02-15  0:23     ` Ingo Molnar
2008-02-17 16:59     ` Ingo Molnar

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