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Re: [PATCH] Linux Kernel Markers
- From: "Frank Ch. Eigler" <fche at redhat dot com>
- To: Karim Yaghmour <karim at opersys dot com>
- Cc: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>, Martin Bligh <mbligh at google dot com>, prasanna at in dot ibm dot com, Andrew Morton <akpm at osdl dot org>, "Frank Ch. Eigler" <fche at redhat dot com>, Ingo Molnar <mingo at elte dot hu>, Mathieu Desnoyers <mathieu dot desnoyers at polymtl dot ca>, Paul Mundt <lethal at linux-sh dot org>, linux-kernel <linux-kernel at vger dot kernel dot org>, Jes Sorensen <jes at sgi dot com>, Tom Zanussi <zanussi at us dot ibm dot com>, Richard J Moore <richardj_moore at uk dot ibm dot com>, Michel Dagenais <michel dot dagenais at polymtl dot ca>, Christoph Hellwig <hch at infradead dot org>, Greg Kroah-Hartman <gregkh at suse dot de>, Thomas Gleixner <tglx at linutronix dot de>, William Cohen <wcohen at redhat dot com>, ltt-dev at shafik dot org, systemtap at sources dot redhat dot com, Alan Cox <alan at lxorguk dot ukuu dot org dot uk>
- Date: Wed, 20 Sep 2006 14:08:08 -0400
- Subject: Re: [PATCH] Linux Kernel Markers
- References: <4510151B.5070304@google.com> <20060919093935.4ddcefc3.akpm@osdl.org> <45101DBA.7000901@google.com> <20060919063821.GB23836@in.ibm.com> <45102641.7000101@google.com> <20060919070516.GD23836@in.ibm.com> <451030A6.6040801@google.com> <45105B5E.9080107@opersys.com> <451141B1.40803@hitachi.com> <451178B0.9030205@opersys.com>
Hi -
On Wed, Sep 20, 2006 at 01:21:52PM -0400, Karim Yaghmour wrote:
> [...] IOW, we should be able to do what Martin suggests fairly
> easily (if we agree on a 5-byte "null" jump at the entry of
> functions of interest). Right? [...]
My interpretation of Martin's Monday proposal is that, if implemented,
we wouldn't need any of this nop/int3 stuff. If function being
instrumented were recompiled on-the-fly, then it could sport plain &
direct C-level calls to the instrumentation handlers.
- FChE
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