lkml.org 
[lkml]   [2008]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
SubjectRe: [PATCH] kprobes: remove sparse warnings from x86
From
Date
On Thu, 2008-02-14 at 10:08 -0500, Masami Hiramatsu wrote:
> Harvey Harrison :
> > 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 <harvey.harrison@gmail.com>
>
> It looks good to me.
>
> Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
>
> Thank you,
>

Ingo, could you take this in x86.git?

Harvey


From: Harvey Harrison <harvey.harrison@gmail.com>
Subject: [PATCH] kprobes: remove sparse warnings from x86

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.

Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
---
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;
--
1.5.4.1.1278.gc75be




\
 
 \ /
  Last update: 2008-02-14 19:03    [from the cache]
©2003-2011 Jasper Spaans