diff options
| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2016-11-21 22:36:41 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-11-23 22:56:25 +1100 |
| commit | 6cc89bad60a673a24386f1ada83de8a068a78909 (patch) | |
| tree | 5b116e7cce37b33103cc12d054ff8f382ca05fd0 /arch/powerpc/include/asm/kprobes.h | |
| parent | 82de5797a26087c651a06de327e6aa9ea69d5d7f (diff) | |
powerpc/kprobes: Invoke handlers directly
Invoke the kprobe handlers directly rather than through notify_die(), to
reduce path taken for handling kprobes. Similar to commit 6f6343f53d13
("kprobes/x86: Call exception handlers directly from do_int3/do_debug").
While at it, rename post_kprobe_handler() to kprobe_post_handler() for
more uniform naming.
Reported-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/kprobes.h')
| -rw-r--r-- | arch/powerpc/include/asm/kprobes.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kprobes.h b/arch/powerpc/include/asm/kprobes.h index 2c9759bdb63b..97b8c1f83453 100644 --- a/arch/powerpc/include/asm/kprobes.h +++ b/arch/powerpc/include/asm/kprobes.h @@ -32,6 +32,7 @@ #include <asm/probes.h> #include <asm/code-patching.h> +#ifdef CONFIG_KPROBES #define __ARCH_WANT_KPROBES_INSN_SLOT struct pt_regs; @@ -127,5 +128,11 @@ struct kprobe_ctlblk { extern int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *data); extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); +extern int kprobe_handler(struct pt_regs *regs); +extern int kprobe_post_handler(struct pt_regs *regs); +#else +static inline int kprobe_handler(struct pt_regs *regs) { return 0; } +static inline int kprobe_post_handler(struct pt_regs *regs) { return 0; } +#endif /* CONFIG_KPROBES */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_KPROBES_H */ |