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Commit 8f9b1528 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Linus Torvalds
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kprobes: support kretprobe and jprobe per-probe disabling 



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

Signed-off-by: default avatarMasami Hiramatsu <mhiramat@redhat.com>
Acked-by: default avatarAnanth 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent de5bd88d

Documentation/kprobes.txt

+10 −6
Original line number Diff line number Diff line
@@ -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

include/linux/kprobes.h

+17 −0
Original line number Diff line number Diff line
@@ -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 */