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| author | Paul Gortmaker <paul.gortmaker@windriver.com> | 2013-06-17 21:43:14 +0200 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2013-07-15 01:36:52 +0200 |
| commit | 2066aadd53c563445039d6490b685783816270ec (patch) | |
| tree | 72a69dee0008e429e62a80b8fad91faf1296737b /arch/sparc/kernel/trampoline_64.S | |
| parent | arm: delete __cpuinit/__CPUINIT usage from all ARM users (diff) | |
| download | linux-2066aadd53c563445039d6490b685783816270ec.tar.xz linux-2066aadd53c563445039d6490b685783816270ec.zip | |
sparc: delete __cpuinit/__CPUINIT usage from all 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)
are flagged as __cpuinit -- so if we remove the __cpuinit from
arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
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 arch/sparc uses of the __cpuinit macros from
C files and removes __CPUINIT from assembly files. Note that even
though arch/sparc/kernel/trampoline_64.S has instances of ".previous"
in it, they are all paired off against explicit ".section" directives,
and not implicitly paired with __CPUINIT (unlike mips and arm were).
[1] https://lkml.org/lkml/2013/5/20/589
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'arch/sparc/kernel/trampoline_64.S')
| -rw-r--r-- | arch/sparc/kernel/trampoline_64.S | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S index 2e973a26fbda..e0b1e13a0736 100644 --- a/arch/sparc/kernel/trampoline_64.S +++ b/arch/sparc/kernel/trampoline_64.S @@ -32,13 +32,11 @@ itlb_load: dtlb_load: .asciz "SUNW,dtlb-load" - /* XXX __cpuinit this thing XXX */ #define TRAMP_STACK_SIZE 1024 .align 16 tramp_stack: .skip TRAMP_STACK_SIZE - __CPUINIT .align 8 .globl sparc64_cpu_startup, sparc64_cpu_startup_end sparc64_cpu_startup: |