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Message-ID: <ZuAAOmjTGYEFQJPC@smile.fi.intel.com>
Date: Tue, 10 Sep 2024 11:15:54 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Waiman Long <longman@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Will Deacon <will.deacon@....com>,
Boqun Feng <boqun.feng@...il.com>, linux-kernel@...r.kernel.org,
llvm@...ts.linux.dev, Nathan Chancellor <nathan@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Bill Wendling <morbo@...gle.com>,
Justin Stitt <justinstitt@...gle.com>
Subject: Re: [PATCH] locking/rwsem: Move is_rwsem_reader_owned() and
rwsem_owner() under CONFIG_DEBUG_RWSEMS
On Mon, Sep 09, 2024 at 02:29:05PM -0400, Waiman Long wrote:
> Both is_rwsem_reader_owned() and rwsem_owner() are currently only used when
> CONFIG_DEBUG_RWSEMS is defined. This causes a compilation error with clang
> when `make W=1` and CONFIG_WERROR=y:
>
> kernel/locking/rwsem.c:187:20: error: unused function 'is_rwsem_reader_owned' [-Werror,-Wunused-function]
> 187 | static inline bool is_rwsem_reader_owned(struct rw_semaphore *sem)
> | ^~~~~~~~~~~~~~~~~~~~~
> kernel/locking/rwsem.c:271:35: error: unused function 'rwsem_owner' [-Werror,-Wunused-function]
> 271 | static inline struct task_struct *rwsem_owner(struct rw_semaphore *sem)
> | ^~~~~~~~~~~
>
> Fix this by moving these two functions under the CONFIG_DEBUG_RWSEMS define.
At least this solves my issue,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Thanks!
--
With Best Regards,
Andy Shevchenko
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