linux-kernel - Re: [PATCH v3 1/2] config: Adding the new config parameter CONFIG_PROVE_LOCKING

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Message-ID: <20160928205140.GA1750@ravnborg.org>
Date:   Wed, 28 Sep 2016 22:51:40 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     Babu Moger <babu.moger@...cle.com>
Cc:     peterz@...radead.org, mingo@...hat.com, akpm@...ux-foundation.org,
        keescook@...omium.org, dan.j.williams@...el.com,
        aryabinin@...tuozzo.com, tj@...nel.org,
        linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH v3 1/2] config: Adding the new config parameter
 CONFIG_PROVE_LOCKING_SMALL for sparc

On Tue, Sep 27, 2016 at 12:33:27PM -0700, Babu Moger wrote:
> This new config parameter limits the space used for "Lock debugging:
> prove locking correctness" by about 4MB. The current sparc systems have
> the limitation of 32MB size for kernel size including .text, .data and
> .bss sections. With PROVE_LOCKING feature, the kernel size could grow
> beyond this limit and causing system boot-up issues. With this option,
> kernel limits the size of the entries of lock_chains, stack_trace etc.,
> so that kernel fits in required size limit. This is not visible to user
> and only used for sparc.
> 
> Signed-off-by: Babu Moger <babu.moger@...cle.com>
Acked-by: Sam Ravnborg <sam@...nborg.org>