From: Anton Blanchard <anton@samba.org>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Scott Wood <oss@buserror.net>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc: inline current_stack_pointer()
Date: Tue, 31 May 2016 20:05:19 +1000 [thread overview]
Message-ID: <20160531200519.25fdf12c@kryten> (raw)
In-Reply-To: <20160523084602.53F771A239A@localhost.localdomain>
Hi,
> current_stack_pointeur() is a single instruction function. it
> It is not worth breaking the execution flow with a bl/blr for a
> single instruction
Check out bfe9a2cfe91a ("powerpc: Reimplement __get_SP() as a function
not a define") to see why we made it a function.
Anton
prev parent reply other threads:[~2016-05-31 10:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-23 8:46 [PATCH] powerpc: inline current_stack_pointer() Christophe Leroy
2016-05-23 17:17 ` Gabriel Paubert
2016-05-24 22:21 ` Paul Mackerras
2016-05-23 20:22 ` Segher Boessenkool
2016-05-24 5:39 ` Christophe Leroy
2016-05-24 6:08 ` Segher Boessenkool
2016-05-31 10:05 ` Anton Blanchard [this message]
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