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Subject: Re: [PATCH] time: tick-sched: use bool for tick_stopped
From:   Joe Perches <joe@perches.com>
To:     yuankuiz@codeaurora.org, Thomas Gleixner <tglx@linutronix.de>
Cc:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Linux PM <linux-pm@vger.kernel.org>,
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        Frederic Weisbecker <fweisbec@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@kernel.org>,
        Len Brown <len.brown@intel.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-pm-owner@vger.kernel.org, akpm@linux-foundation.org
Date:   Fri, 20 Apr 2018 12:24:32 -0700
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On Fri, 2018-04-20 at 14:44 +0800, yuankuiz@codeaurora.org wrote:
> On 2018-04-20 09:47 AM, yuankuiz@codeaurora.org wrote:
[]
> > [ZJ] Further prototyping has been given based on gcc for both of
> > x86_64 and armv8-a,
> >      unsigned int and bool share the same 1 bytes without the
> > addtional storage for sure.
> >      Open this and welcome if any other difference behaviour could be 
> > captured.
> 
> [ZJ] Typo.. change 4 bytes above to 1 byte actually.

Not really.

unsigned int is 4 and bool is generally 1.
Alignment padding after a bool may exist.