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| author | Masami Hiramatsu | 2010-02-25 14:34:15 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2010-02-25 17:49:25 +0100 |
| commit | b2be84df99ebc93599c69e931a3c4a5105abfabc (patch) | |
| tree | 35f720b12bed1cc98c7d261dc3a6af96916faa44 /kernel/sysctl.c | |
| parent | kprobes: Introduce kprobes jump optimization (diff) | |
| download | kernel-qcow2-linux-b2be84df99ebc93599c69e931a3c4a5105abfabc.tar.gz kernel-qcow2-linux-b2be84df99ebc93599c69e931a3c4a5105abfabc.tar.xz kernel-qcow2-linux-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 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 8a68b2448468..40d791d616b5 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -50,6 +50,7 @@ #include <linux/ftrace.h> #include <linux/slow-work.h> #include <linux/perf_event.h> +#include <linux/kprobes.h> #include <asm/uaccess.h> #include <asm/processor.h> @@ -1450,6 +1451,17 @@ static struct ctl_table debug_table[] = { .proc_handler = proc_dointvec }, #endif +#if defined(CONFIG_OPTPROBES) + { + .procname = "kprobes-optimization", + .data = &sysctl_kprobes_optimization, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_kprobes_optimization_handler, + .extra1 = &zero, + .extra2 = &one, + }, +#endif { } }; |