lkml.org 
[lkml]   [2006]   [Sep]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] Linux Kernel Markers 0.2 for Linux 2.6.17
From
Date

Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> writes:

> Following some very interesting ideas from Martin that shows that
> even static function calls and inlined functions can be used in
> interesting ways with markers to deploy dynamic tracers with easy
> access to local function variables [...]

While that has been an interesting idea, its implementation would need
to be sketched out far beyond the speculative, in order to override
what I perceive as the rough consensus reached during earlier in the
thread.

> [...] These last emails convince me even more that a markup
> mechanism must interface with every kind of instrumentation hooking
> we can think about, both dynamic and static. [...]

If you don't allow yourself to presume on-the-fly function
recompilation, then these markers would need to be made run-time
rather than compile-time configurable. That is, not like this:

> +/* Menu configured markers */
> +#ifndef CONFIG_MARK
> +#define MARK MARK_INACTIVE
> +#elif defined(CONFIG_MARK_PRINT)
> +#define MARK MARK_PRINT
> +#elif defined(CONFIG_MARK_FPROBE)
> +#define MARK MARK_FPROBE
> +#elif defined(CONFIG_MARK_KPROBE)
> +#define MARK MARK_KPROBE
> +#elif defined(CONFIG_MARK_JPROBE)
> +#define MARK MARK_JPROBE
> +#endif

- FChE
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-09-19 21:27    [W:0.112 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site