Re: [PATCH v3 2/9] liblockdep: Wrap kernel/lockdep.c to allow usagefrom userspace

From: Ingo Molnar
Date: Fri May 10 2013 - 05:38:57 EST



* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Thu, May 09, 2013 at 11:58:02AM -0400, Sasha Levin wrote:
> > kernel/lockdep.c deals with validating locking scenarios for
> > various architectures supported by the kernel. There isn't
> > anything kernel specific going on in lockdep, and when we
> > compare userspace to other architectures that don't have to deal
> > with irqs such as s390, they become all too similar.
> >
> > We wrap kernel/lockdep.c and include/linux/lockdep.h with
> > several headers which allow us to build and use lockdep from
> > userspace. We don't touch the kernel code itself which means
> > that any work done on lockdep in the kernel will automatically
> > benefit userspace lockdep as well!
> >
> > Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
> > ---
>
> OK, this patch is a complete fail with anything not git. Please fix it so I can
> use quilt.

The way I work that around is by making empty files a single-line empty
file, with a single \n in them.

Thanks,

Ingo
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