From c3fc5cd5c5a5f4738776a965a020a32c1a37c8fd Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 29 May 2013 01:07:19 +0200 Subject: MIPS: Implement HAVE_CONTEXT_TRACKING. This enables support for CONFIG_NO_HZ_FULL. Signed-off-by: Ralf Baechle --- arch/mips/kernel/cpu-bugs64.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/mips/kernel/cpu-bugs64.c') diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c index de3c25ffd9f9..0c61df281ce6 100644 --- a/arch/mips/kernel/cpu-bugs64.c +++ b/arch/mips/kernel/cpu-bugs64.c @@ -6,6 +6,7 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ +#include #include #include #include @@ -171,8 +172,12 @@ static volatile int daddi_ov __cpuinitdata; asmlinkage void __init do_daddi_ov(struct pt_regs *regs) { + enum ctx_state prev_state; + + prev_state = exception_enter(); daddi_ov = 1; regs->cp0_epc += 4; + exception_exit(prev_state); } static inline void check_daddi(void) -- cgit v1.2.3 From 078a55fc824c1633b3a507e4ad48b4637c1dfc18 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Tue, 18 Jun 2013 13:38:59 +0000 Subject: MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code commit 3747069b25e419f6b51395f48127e9812abc3596 upstream. 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. Here, we remove all the MIPS __cpuinit from C code and __CPUINIT from asm files. MIPS is interesting in this respect, because there are also uasm users hiding behind their own renamed versions of the __cpuinit macros. [1] https://lkml.org/lkml/2013/5/20/589 [ralf@linux-mips.org: Folded in Paul's followup fix.] Signed-off-by: Paul Gortmaker Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5494/ Patchwork: https://patchwork.linux-mips.org/patch/5495/ Patchwork: https://patchwork.linux-mips.org/patch/5509/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/cpu-bugs64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/mips/kernel/cpu-bugs64.c') diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c index 0c61df281ce6..2d80b5f1aeae 100644 --- a/arch/mips/kernel/cpu-bugs64.c +++ b/arch/mips/kernel/cpu-bugs64.c @@ -168,7 +168,7 @@ static inline void check_mult_sh(void) panic(bug64hit, !R4000_WAR ? r4kwar : nowar); } -static volatile int daddi_ov __cpuinitdata; +static volatile int daddi_ov; asmlinkage void __init do_daddi_ov(struct pt_regs *regs) { -- cgit v1.2.3