linux-kernel - Re: linux-next: build warning after merge of the akpm tree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20140519124850.7d4470e179c237552f363658@linux-foundation.org>
Date:	Mon, 19 May 2014 12:48:50 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Davidlohr Bueso <davidlohr@...com>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Tim Chen <tim.c.chen@...ux.intel.com>
Subject: Re: linux-next: build warning after merge of the akpm tree

On Mon, 19 May 2014 08:13:16 -0700 Davidlohr Bueso <davidlohr@...com> wrote:

> > Presumably a result of commit fe2038c57c03 ("rwsem: Support optimistic
> > spinning").
> 
> If CONFIG_SMP, we add two new fields to the rwsem structure
> (include/linux/rwsem.h) and likewise we update the
> __RWSEM_INITIALIZER(name) macro. Afaict the only way to trigger
> something like that is to be using the spinlock variant
> (rwsem-spinlock.h).
> 
> The fix for that would be:
> 
> diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
> index 3e108f1..091d993 100644
> --- a/include/linux/rwsem.h
> +++ b/include/linux/rwsem.h
> @@ -64,7 +64,7 @@ static inline int rwsem_is_locked(struct rw_semaphore *sem)
>  # define __RWSEM_DEP_MAP_INIT(lockname)
>  #endif
>  
> -#ifdef CONFIG_SMP
> +#if defined(CONFIG_SMP) && defined(CONFIG_RWSEM_XCHGADD_ALGORITHM)
>  #define __RWSEM_INITIALIZER(name)                      \
>         { RWSEM_UNLOCKED_VALUE,                         \
>           __RAW_SPIN_LOCK_UNLOCKED(name.wait_lock),     \

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