linux-kernel - Re: [patch 02/10] Linux Kernel Markers, architecture independent code.

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Message-ID: <20070510051043.GA6640@martell.zuzino.mipt.ru>
Date:	Thu, 10 May 2007 09:10:43 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	hch@...radead.org, Adrian Bunk <bunk@...sta.de>
Subject: Re: [patch 02/10] Linux Kernel Markers, architecture independent code.

On Wed, May 09, 2007 at 09:55:57PM -0400, Mathieu Desnoyers wrote:
> --- /dev/null
> +++ linux-2.6-lttng/include/linux/marker.h
> @@ -0,0 +1,124 @@

> +#ifdef __KERNEL__

Just don't add this file to include/linux/Kbuild and remove __KERNEL__
ifdef.

> --- linux-2.6-lttng.orig/include/linux/module.h
> +++ linux-2.6-lttng/include/linux/module.h
> @@ -356,6 +356,9 @@
>  	/* The command line arguments (may be mangled).  People like
>  	   keeping pointers to this stuff */
>  	char *args;
> +
> +	const struct __mark_marker *markers;
> +	unsigned int num_markers;

#ifdef CONFIG_MARKERS, please.

> --- linux-2.6-lttng.orig/kernel/module.c
> +++ linux-2.6-lttng/kernel/module.c

> @@ -1659,6 +1884,9 @@
>  	unsigned int unusedcrcindex;
>  	unsigned int unusedgplindex;
>  	unsigned int unusedgplcrcindex;
> +	unsigned int markersindex;
> +	unsigned int markersdataindex;
> +	unsigned int markersstringsindex;

Bunch of underscores wouldn't hurt.

> +void list_modules(void)
> +{
> +	/* Enumerate loaded modules */
> +	struct list_head	*i;
> +	struct module		*mod;
> +	unsigned long refcount = 0;
> +
> +	mutex_lock(&module_mutex);
> +	list_for_each(i, &modules) {
> +		mod = list_entry(i, struct module, list);
> +#ifdef CONFIG_MODULE_UNLOAD
> +		refcount = local_read(&mod->ref[0].count);
						^
Buy second CPU, already. ;-)

> +#endif //CONFIG_MODULE_UNLOAD
> +		trace_mark(list_module, "%s %d %lu",
> +				mod->name, mod->state, refcount);
> +	}
> +	mutex_unlock(&module_mutex);
> +}

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