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Re: What about MIPS support?
- From: Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>
- To: Maneesh Soni <manesoni at cisco dot com>
- Cc: Victor Kamensky <kamensky at cisco dot com>, systemtap at sourceware dot org, Josh Stone <jistone at redhat dot com>, Per Hallsmark <Per dot Hallsmark at windriver dot com>, Wade Farnsworth <wade_farnsworth at mentor dot com>
- Date: Thu, 23 Aug 2012 20:03:04 +0530
- Subject: Re: What about MIPS support?
- References: <Pine.GSO.4.64.1208221222170.28511@infra-view11.cisco.com> <20120823022252.GA10067@cisco.com>
- Reply-to: ananth at in dot ibm dot com
On Thu, Aug 23, 2012 at 07:52:52AM +0530, Maneesh Soni wrote:
> On Wed, Aug 22, 2012 at 01:04:12PM -0700, Victor Kamensky wrote:
> ....
> > Wrt of MIPS kprobes, it should be there already, somewhere in latest
> > kernel. Most of support was there for a while. Maneesh and I
> > contributed patch that let probe be inserted into jump instructions
> > (that was limitation of original implementation, which we quickly
> > discovered when we used for real cases). We worked on top 2.6.32
> > kernel. As understand there is current gradual departure from
> > uprobes .. so our mips uprobes part may need rework a bit.
> ^^^^^^ I guess you meant utrace?
> >
> Actually the current (as in mainline kernel) approach for uprobes
> is not using utrace, so there could be almost a re-write effort.
... though it shouldn't be a major one; see for instance my port to
powerpc http://patchwork.ozlabs.org/patch/179260/ currently under
review/discussion.
Ananth