linux-kernel - Re: [ 31/54] kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP

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Date:	Sat, 19 May 2012 15:27:33 +0200
From:	Christoph Biedl <linux-kernel.bfrz@...chmal.in-ulm.de>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Sami Liedes <sami.liedes@....fi>,
	Tejun Heo <tj@...nel.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Catalin Marinas <catalin.marinas@....com>
Subject: Re: [ 31/54] kmemleak: Fix the kmemleak tracking of the percpu
 areas with !SMP

Greg KH wrote...

> 3.0-stable review patch.  If anyone has any objections, please let me know.

> From: Catalin Marinas <catalin.marinas@....com>
> 
> commit 100d13c3b5b9410f604b86f5e0a34da64b8cf659 upstream.

> +	/* kmemleak tracks the percpu allocations separately */
> +	kmemleak_free(fc);

That one causes:

    mm/percpu.c: In function ‘setup_per_cpu_areas’:
    mm/percpu.c:1877: error: implicit declaration of function ‘kmemleak_free’
    make[1]: *** [mm/percpu.o] Error 1
    make: *** [mm] Error 2

Trivial fix, works for me: Add

    #include <linux/kmemleak.h>

to mm/percpu.c. FWIW, upstream did this in in f528f0b but I cannot
tell whether that commit is in any way of interest for 3.0.x.

Regards,

    Christoph

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