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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-18 08:19:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-18 08:19:03 -0700
commit4d7b4ac22fbec1a03206c6cde353f2fd6942f828 (patch)
tree2d96a9e9c28cf6fa628a278decc00ad55a8b043b /kernel/kprobes.c
parent3aaf51ace5975050ab43c7d4d7e439e0ae7d13d7 (diff)
parent94f3ca95787ada3d64339a4ecb2754236ab563f6 (diff)
downloadlinux-4d7b4ac22fbec1a03206c6cde353f2fd6942f828.tar.bz2
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (311 commits) perf tools: Add mode to build without newt support perf symbols: symbol inconsistency message should be done only at verbose=1 perf tui: Add explicit -lslang option perf options: Type check all the remaining OPT_ variants perf options: Type check OPT_BOOLEAN and fix the offenders perf options: Check v type in OPT_U?INTEGER perf options: Introduce OPT_UINTEGER perf tui: Add workaround for slang < 2.1.4 perf record: Fix bug mismatch with -c option definition perf options: Introduce OPT_U64 perf tui: Add help window to show key associations perf tui: Make <- exit menus too perf newt: Add single key shortcuts for zoom into DSO and threads perf newt: Exit browser unconditionally when CTRL+C, q or Q is pressed perf newt: Fix the 'A'/'a' shortcut for annotate perf newt: Make <- exit the ui_browser x86, perf: P4 PMU - fix counters management logic perf newt: Make <- zoom out filters perf report: Report number of events, not samples perf hist: Clarify events_stats fields usage ... Fix up trivial conflicts in kernel/fork.c and tools/perf/builtin-record.c
Diffstat (limited to 'kernel/kprobes.c')
-rw-r--r--kernel/kprobes.c132
1 files changed, 66 insertions, 66 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 0ed46f3e51e9..282035f3ae96 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1588,6 +1588,72 @@ static void __kprobes kill_kprobe(struct kprobe *p)
arch_remove_kprobe(p);
}
+/* Disable one kprobe */
+int __kprobes disable_kprobe(struct kprobe *kp)
+{
+ int ret = 0;
+ struct kprobe *p;
+
+ mutex_lock(&kprobe_mutex);
+
+ /* Check whether specified probe is valid. */
+ p = __get_valid_kprobe(kp);
+ if (unlikely(p == NULL)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* If the probe is already disabled (or gone), just return */
+ if (kprobe_disabled(kp))
+ goto out;
+
+ kp->flags |= KPROBE_FLAG_DISABLED;
+ if (p != kp)
+ /* When kp != p, p is always enabled. */
+ try_to_disable_aggr_kprobe(p);
+
+ if (!kprobes_all_disarmed && kprobe_disabled(p))
+ disarm_kprobe(p);
+out:
+ mutex_unlock(&kprobe_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(disable_kprobe);
+
+/* Enable one kprobe */
+int __kprobes enable_kprobe(struct kprobe *kp)
+{
+ int ret = 0;
+ struct kprobe *p;
+
+ mutex_lock(&kprobe_mutex);
+
+ /* Check whether specified probe is valid. */
+ p = __get_valid_kprobe(kp);
+ if (unlikely(p == NULL)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (kprobe_gone(kp)) {
+ /* This kprobe has gone, we couldn't enable it. */
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (p != kp)
+ kp->flags &= ~KPROBE_FLAG_DISABLED;
+
+ if (!kprobes_all_disarmed && kprobe_disabled(p)) {
+ p->flags &= ~KPROBE_FLAG_DISABLED;
+ arm_kprobe(p);
+ }
+out:
+ mutex_unlock(&kprobe_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(enable_kprobe);
+
void __kprobes dump_kprobe(struct kprobe *kp)
{
printk(KERN_WARNING "Dumping kprobe:\n");
@@ -1805,72 +1871,6 @@ static const struct file_operations debugfs_kprobes_operations = {
.release = seq_release,
};
-/* Disable one kprobe */
-int __kprobes disable_kprobe(struct kprobe *kp)
-{
- int ret = 0;
- struct kprobe *p;
-
- mutex_lock(&kprobe_mutex);
-
- /* Check whether specified probe is valid. */
- p = __get_valid_kprobe(kp);
- if (unlikely(p == NULL)) {
- ret = -EINVAL;
- goto out;
- }
-
- /* If the probe is already disabled (or gone), just return */
- if (kprobe_disabled(kp))
- goto out;
-
- kp->flags |= KPROBE_FLAG_DISABLED;
- if (p != kp)
- /* When kp != p, p is always enabled. */
- try_to_disable_aggr_kprobe(p);
-
- if (!kprobes_all_disarmed && kprobe_disabled(p))
- disarm_kprobe(p);
-out:
- mutex_unlock(&kprobe_mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(disable_kprobe);
-
-/* Enable one kprobe */
-int __kprobes enable_kprobe(struct kprobe *kp)
-{
- int ret = 0;
- struct kprobe *p;
-
- mutex_lock(&kprobe_mutex);
-
- /* Check whether specified probe is valid. */
- p = __get_valid_kprobe(kp);
- if (unlikely(p == NULL)) {
- ret = -EINVAL;
- goto out;
- }
-
- if (kprobe_gone(kp)) {
- /* This kprobe has gone, we couldn't enable it. */
- ret = -EINVAL;
- goto out;
- }
-
- if (p != kp)
- kp->flags &= ~KPROBE_FLAG_DISABLED;
-
- if (!kprobes_all_disarmed && kprobe_disabled(p)) {
- p->flags &= ~KPROBE_FLAG_DISABLED;
- arm_kprobe(p);
- }
-out:
- mutex_unlock(&kprobe_mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(enable_kprobe);
-
static void __kprobes arm_all_kprobes(void)
{
struct hlist_head *head;