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| author | Masami Hiramatsu <mhiramat@redhat.com> | 2010-02-25 08:34:15 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-02-25 17:49:25 +0100 |
| commit | b2be84df99ebc93599c69e931a3c4a5105abfabc (patch) | |
| tree | 35f720b12bed1cc98c7d261dc3a6af96916faa44 /include/linux/kprobes.h | |
| parent | afd66255b9a48f5851326ddae50e2203fbf71dc9 (diff) | |
| download | lwn-b2be84df99ebc93599c69e931a3c4a5105abfabc.tar.gz lwn-b2be84df99ebc93599c69e931a3c4a5105abfabc.zip | |
kprobes: Jump optimization sysctl interface
Add /proc/sys/debug/kprobes-optimization sysctl which enables
and disables kprobes jump optimization on the fly for debugging.
Changes in v7:
- Remove ctl_name = CTL_UNNUMBERED for upstream compatibility.
Changes in v6:
- Update comments and coding style.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Anders Kaseorg <andersk@ksplice.com>
Cc: Tim Abbott <tabbott@ksplice.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Mathieu Desnoyers <compudj@krystal.dyndns.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
LKML-Reference: <20100225133415.6725.8274.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/kprobes.h')
| -rw-r--r-- | include/linux/kprobes.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index aed1f95c582f..e7d1b2e0070d 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -283,6 +283,14 @@ extern int arch_within_optimized_kprobe(struct optimized_kprobe *op, unsigned long addr); extern void opt_pre_handler(struct kprobe *p, struct pt_regs *regs); + +#ifdef CONFIG_SYSCTL +extern int sysctl_kprobes_optimization; +extern int proc_kprobes_optimization_handler(struct ctl_table *table, + int write, void __user *buffer, + size_t *length, loff_t *ppos); +#endif + #endif /* CONFIG_OPTPROBES */ /* Get the kprobe at this addr (if any) - called with preemption disabled */ |