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kprobes: support kretprobe and jprobe per-probe disabling

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Add disable/enable_kretprobe() and disable/enable_jprobe().

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Masami Hiramatsu 2009-04-06 19:01:02 -07:00 committed by Linus Torvalds
parent de5bd88d5a
commit 8f9b15286a
2 changed files with 27 additions and 6 deletions
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16
Documentation/kprobes.txt
View file

@ -365,21 +365,25 @@ probes) in the specified array, they clear the addr field of those
incorrect probes. However, other probes in the array are
unregistered correctly.
4.7 disable_kprobe
4.7 disable_*probe
#include <linux/kprobes.h>
int disable_kprobe(struct kprobe *kp);
int disable_kretprobe(struct kretprobe *rp);
int disable_jprobe(struct jprobe *jp);
Temporarily disables the specified kprobe. You can enable it again by using
enable_kprobe(). You must specify the kprobe which has been registered.
Temporarily disables the specified *probe. You can enable it again by using
enable_*probe(). You must specify the probe which has been registered.
4.8 enable_kprobe
4.8 enable_*probe
#include <linux/kprobes.h>
int enable_kprobe(struct kprobe *kp);
int enable_kretprobe(struct kretprobe *rp);
int enable_jprobe(struct jprobe *jp);
Enables kprobe which has been disabled by disable_kprobe(). You must specify
the kprobe which has been registered.
Enables *probe which has been disabled by disable_*probe(). You must specify
the probe which has been registered.
5. Kprobes Features and Limitations

17
include/linux/kprobes.h
View file

@ -371,4 +371,21 @@ static inline int enable_kprobe(struct kprobe *kp)
return -ENOSYS;
}
#endif /* CONFIG_KPROBES */
static inline int disable_kretprobe(struct kretprobe *rp)
{
return disable_kprobe(&rp->kp);
}
static inline int enable_kretprobe(struct kretprobe *rp)
{
return enable_kprobe(&rp->kp);
}
static inline int disable_jprobe(struct jprobe *jp)
{
return disable_kprobe(&jp->kp);
}
static inline int enable_jprobe(struct jprobe *jp)
{
return enable_kprobe(&jp->kp);
}
#endif /* _LINUX_KPROBES_H */