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authorPaul Gortmaker <paul.gortmaker@windriver.com>2013-06-17 15:43:14 -0400
committerPaul Gortmaker <paul.gortmaker@windriver.com>2013-07-14 19:36:52 -0400
commit8bd26e3a7e49af2697449bbcb7187a39dc85d672 (patch)
tree60f8d1ac6596d4e51a6f2959ca4fe4e10989a8f1 /arch/arm/mach-mvebu
parent078a55fc824c1633b3a507e4ad48b4637c1dfc18 (diff)
downloadop-kernel-dev-8bd26e3a7e49af2697449bbcb7187a39dc85d672.zip
op-kernel-dev-8bd26e3a7e49af2697449bbcb7187a39dc85d672.tar.gz
arm: delete __cpuinit/__CPUINIT usage from all ARM users
The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) and are flagged as __cpuinit -- so if we remove the __cpuinit from the arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit related content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the ARM uses of the __cpuinit macros from C code, and all __CPUINIT from assembly code. It also had two ".previous" section statements that were paired off against __CPUINIT (aka .section ".cpuinit.text") that also get removed here. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'arch/arm/mach-mvebu')
-rw-r--r--arch/arm/mach-mvebu/coherency.c2
-rw-r--r--arch/arm/mach-mvebu/headsmp.S2
-rw-r--r--arch/arm/mach-mvebu/platsmp.c5
3 files changed, 3 insertions, 6 deletions
diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c
index be11759..4c24303 100644
--- a/arch/arm/mach-mvebu/coherency.c
+++ b/arch/arm/mach-mvebu/coherency.c
@@ -28,7 +28,7 @@
#include <asm/cacheflush.h>
#include "armada-370-xp.h"
-unsigned long __cpuinitdata coherency_phys_base;
+unsigned long coherency_phys_base;
static void __iomem *coherency_base;
static void __iomem *coherency_cpu_base;
diff --git a/arch/arm/mach-mvebu/headsmp.S b/arch/arm/mach-mvebu/headsmp.S
index 7147300..8a1b0c9 100644
--- a/arch/arm/mach-mvebu/headsmp.S
+++ b/arch/arm/mach-mvebu/headsmp.S
@@ -21,8 +21,6 @@
#include <linux/linkage.h>
#include <linux/init.h>
- __CPUINIT
-
/*
* Armada XP specific entry point for secondary CPUs.
* We add the CPU to the coherency fabric and then jump to secondary
diff --git a/arch/arm/mach-mvebu/platsmp.c b/arch/arm/mach-mvebu/platsmp.c
index 93f2f3a..ce81d30 100644
--- a/arch/arm/mach-mvebu/platsmp.c
+++ b/arch/arm/mach-mvebu/platsmp.c
@@ -71,13 +71,12 @@ void __init set_secondary_cpus_clock(void)
}
}
-static void __cpuinit armada_xp_secondary_init(unsigned int cpu)
+static void armada_xp_secondary_init(unsigned int cpu)
{
armada_xp_mpic_smp_cpu_init();
}
-static int __cpuinit armada_xp_boot_secondary(unsigned int cpu,
- struct task_struct *idle)
+static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
pr_info("Booting CPU %d\n", cpu);
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