lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ftrace: export kretprobe_trampoline for function tracer

Browse Source 
Follow suit from kprobe implementations on other archs and make kretprobe_trampoline non-static. Ftrace implmentation (more specifically, kernel/trace/trace.c) requires access to it (see-> http://kerneltrap.org/mailarchive/linux-kernel/2008/5/27/1955234).

Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Abhishek Sagar
2008-05-31 14:24:02 +05:30
committed by Ingo Molnar
parent ad90c0e3ce
commit e077341024
2 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/kernel/kprobes.c
View File

@@ -274,7 +274,7 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
* for kretprobe handlers which should normally be interested in r0 only * for kretprobe handlers which should normally be interested in r0 only
* anyway. * anyway.
*/ */
static void __attribute__((naked)) __kprobes kretprobe_trampoline(void) void __naked __kprobes kretprobe_trampoline(void)
{ {
__asm__ __volatile__ ( __asm__ __volatile__ (
"stmdb sp!, {r0 - r11} \n\t" "stmdb sp!, {r0 - r11} \n\t"

1
include/asm-arm/kprobes.h
View File

@@ -59,6 +59,7 @@ struct kprobe_ctlblk {
}; };
void arch_remove_kprobe(struct kprobe *); void arch_remove_kprobe(struct kprobe *);
void kretprobe_trampoline(void);
int kprobe_trap_handler(struct pt_regs *regs, unsigned int instr); int kprobe_trap_handler(struct pt_regs *regs, unsigned int instr);
int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr); int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);