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Re: [RFC][PATCH -mm 0/6] kprobes: Per-probe disabling support
- From: Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>
- To: Masami Hiramatsu <mhiramat at redhat dot com>
- Cc: Andrew Morton <akpm at linux-foundation dot org>, Jim Keniston <jkenisto at us dot ibm dot com>, David Miller <davem at davemloft dot net>, LKML <linux-kernel at vger dot kernel dot org>, systemtap-ml <systemtap at sources dot redhat dot com>, Maneesh Soni <maneesh at linux dot vnet dot ibm dot com>, Srikar Dronamraju <srikar at linux dot vnet dot ibm dot com>
- Date: Tue, 13 Jan 2009 10:38:31 +0530
- Subject: Re: [RFC][PATCH -mm 0/6] kprobes: Per-probe disabling support
- References: <496BF48F.2030300@redhat.com>
- Reply-to: ananth at in dot ibm dot com
On Mon, Jan 12, 2009 at 08:55:27PM -0500, Masami Hiramatsu wrote:
> Hi,
>
> Currently, kprobes can disable all probes at once, but can't disable it
> individually (not unregister, just disable an kprobe, because unregistering
> needs to wait for scheduler synchronization).
> These patches introduce APIs for on-the-fly per-probe disabling and
> re-enabling by dis-arming/re-arming its breakpoint instruction.
>
> These patches can be applied on the latest -mm tree including my previous
> bugfix patch (http://lkml.org/lkml/2009/1/5/472).
>
> You can download a test of this feature from here:
> http://sources.redhat.com/bugzilla/attachment.cgi?id=3082&action=view
>
> Thank you,
>
> Documentation/kprobes.txt | 38 +++++-
> include/linux/kprobes.h | 51 +++++++-
> kernel/kprobes.c | 281 ++++++++++++++++++++++++++++++++--------------
> 3 files changed, 279 insertions(+), 91 deletions(-)
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
...for the patchset.
Thanks for the work Masami. We'll need to allow this set to cook in
-mm/next for a few weeks before it goes upstream.
Ananth