diff options
author | Arjan van de Ven <arjan@linux.intel.com> | 2008-10-17 09:20:26 -0700 |
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committer | Arjan van de Ven <arjan@linux.intel.com> | 2008-10-17 09:20:26 -0700 |
commit | 651dab4264e4ba0e563f5ff56f748127246e9065 (patch) | |
tree | 016630974bdcb00fe529b673f96d389e0fd6dc94 /arch/mips/kernel/cpu-probe.c | |
parent | 40b8606253552109815786e5d4b0de98782d31f5 (diff) | |
parent | 2e532d68a2b3e2aa6b19731501222069735c741c (diff) |
Merge commit 'linus/master' into merge-linus
Conflicts:
arch/x86/kvm/i8254.c
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
-rw-r--r-- | arch/mips/kernel/cpu-probe.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 335a6ae3d59..0cf15457eca 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -21,6 +21,7 @@ #include <asm/fpu.h> #include <asm/mipsregs.h> #include <asm/system.h> +#include <asm/watch.h> /* * Not all of the MIPS CPUs have the "wait" instruction available. Moreover, @@ -45,18 +46,7 @@ static void r39xx_wait(void) local_irq_enable(); } -/* - * There is a race when WAIT instruction executed with interrupt - * enabled. - * But it is implementation-dependent wheter the pipelie restarts when - * a non-enabled interrupt is requested. - */ -static void r4k_wait(void) -{ - __asm__(" .set mips3 \n" - " wait \n" - " .set mips0 \n"); -} +extern void r4k_wait(void); /* * This variant is preferable as it allows testing need_resched and going to @@ -65,14 +55,18 @@ static void r4k_wait(void) * interrupt is requested" restriction in the MIPS32/MIPS64 architecture makes * using this version a gamble. */ -static void r4k_wait_irqoff(void) +void r4k_wait_irqoff(void) { local_irq_disable(); if (!need_resched()) - __asm__(" .set mips3 \n" + __asm__(" .set push \n" + " .set mips3 \n" " wait \n" - " .set mips0 \n"); + " .set pop \n"); local_irq_enable(); + __asm__(" .globl __pastwait \n" + "__pastwait: \n"); + return; } /* @@ -128,7 +122,7 @@ static int __init wait_disable(char *s) __setup("nowait", wait_disable); -static inline void check_wait(void) +void __init check_wait(void) { struct cpuinfo_mips *c = ¤t_cpu_data; @@ -242,7 +236,6 @@ static inline void check_errata(void) void __init check_bugs32(void) { - check_wait(); check_errata(); } @@ -685,6 +678,7 @@ static inline void spram_config(void) {} static inline void cpu_probe_mips(struct cpuinfo_mips *c) { decode_configs(c); + mips_probe_watch_registers(c); switch (c->processor_id & 0xff00) { case PRID_IMP_4KC: c->cputype = CPU_4KC; |