From: Peter Zijlstra <peterz@infradead.org>
To: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Cc: linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
oe-kbuild-all@lists.linux.dev,
amadeuszx.slawinski@linux.intel.com,
Tony Nguyen <anthony.l.nguyen@intel.com>,
nex.sw.ncis.osdt.itp.upstreaming@intel.com,
netdev@vger.kernel.org, Markus Elfring <Markus.Elfring@web.de>,
Kees Cook <keescook@chromium.org>,
David Lechner <dlechner@baylibre.com>,
Dan Carpenter <error27@gmail.com>,
Andy Shevchenko <andriy.shevchenko@intel.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH v3] cleanup: adjust scoped_guard() macros to avoid potential warning
Date: Wed, 23 Oct 2024 16:32:04 +0200 [thread overview]
Message-ID: <20241023143204.GB9767@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <a7eec76f-1fbc-4fef-9b6d-15b588eacecb@intel.com>
On Wed, Oct 23, 2024 at 03:43:22PM +0200, Przemek Kitszel wrote:
> On 10/18/24 12:50, Peter Zijlstra wrote:
> > On Sun, Oct 13, 2024 at 12:01:24PM +0800, kernel test robot wrote:
> > --- a/include/linux/cleanup.h
> > +++ b/include/linux/cleanup.h
> > @@ -323,7 +323,7 @@ static __maybe_unused const bool class_#
> > */
> > #define __scoped_guard(_name, _fail, _label, args...) \
> > for (CLASS(_name, scope)(args); true; ({ goto _label; })) \
> > - if (!__guard_ptr(_name)(&scope) && __is_cond_ptr(_name)) { \
> > + if (__is_cond_ptr(_name) && !__guard_ptr(_name)(&scope)) { \
>
> but this will purge the attempt to call __guard_ptr(), and thus newer
> lock ;) good that there is at least some comment above
No, __guard_ptr() will only return a pointer, it has no action. The lock
callback is in CLASS(_name, scope)(args).
next prev parent reply other threads:[~2024-10-23 14:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-11 12:15 [PATCH v3] cleanup: adjust scoped_guard() macros to avoid potential warning Przemek Kitszel
2024-10-13 4:01 ` kernel test robot
2024-10-18 10:50 ` Peter Zijlstra
2024-10-23 13:43 ` Przemek Kitszel
2024-10-23 14:32 ` Peter Zijlstra [this message]
2024-10-23 14:44 ` Przemek Kitszel
2024-10-13 5:16 ` kernel test robot
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