linux-kernel - [PATCH v2 1/7] ARM: v7: allow setting different cache functions

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Date:   Fri, 23 Jun 2017 10:52:21 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Brian Norris <computersforpeace@...il.com>,
        Gregory Fong <gregory.0xf0@...il.com>,
        bcm-kernel-feedback-list@...adcom.com (maintainer:BROADCOM BCM7XXX ARM
        ARCHITECTURE), Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Vladimir Murzin <vladimir.murzin@....com>,
        Jonathan Austin <jonathan.austin@....com>,
        Kees Cook <keescook@...omium.org>,
        Laura Abbott <labbott@...hat.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Mark Rutland <mark.rutland@....com>,
        Pawel Moll <pawel.moll@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Douglas Anderson <dianders@...omium.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Christoffer Dall <cdall@...aro.org>,
        Doug Anderson <armlinux@...isordat.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Anna-Maria Gleixner <anna-maria@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Richard Cochran <rcochran@...utronix.de>,
        linux-kernel@...r.kernel.org (open list), opendmb@...il.com
Subject: [PATCH v2 1/7] ARM: v7: allow setting different cache functions

In preparation for adding support for the Broadcom Brahma-B15 read-ahead
cache which requires a different set of cache functions, allow the
__v7_proc macro to override the cache_fns settings, and default to
v7_cache_fns unless specified otherwise.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 arch/arm/mm/proc-v7.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 01d64c0b2563..812ac861cd23 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -567,7 +567,7 @@ __v7_setup_stack:
 	/*
 	 * Standard v7 proc info content
 	 */
-.macro __v7_proc name, initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0, proc_fns = v7_processor_functions
+.macro __v7_proc name, initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0, proc_fns = v7_processor_functions, cache_fns = v7_cache_fns
 	ALT_SMP(.long	PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
 			PMD_SECT_AF | PMD_FLAGS_SMP | \mm_mmuflags)
 	ALT_UP(.long	PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
@@ -583,7 +583,7 @@ __v7_setup_stack:
 	.long	\proc_fns
 	.long	v7wbi_tlb_fns
 	.long	v6_user_fns
-	.long	v7_cache_fns
+	.long	\cache_fns
 .endm
 
 #ifndef CONFIG_ARM_LPAE
-- 
2.9.3