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authorDavid S. Miller <davem@davemloft.net>2008-10-11 12:39:35 -0700
committerDavid S. Miller <davem@davemloft.net>2008-10-11 12:39:35 -0700
commit56c5d900dbb8e042bfad035d18433476931d8f93 (patch)
tree00b793965beeef10db03e0ff021d2d965c410759 /arch/mips/kernel/cpu-probe.c
parent4dd95b63ae25c5cad6986829b5e8788e9faa0330 (diff)
parentead9d23d803ea3a73766c3cb27bf7563ac8d7266 (diff)
downloadop-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.zip
op-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.tar.gz
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: sound/core/memalloc.c
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
-rw-r--r--arch/mips/kernel/cpu-probe.c28
1 files changed, 11 insertions, 17 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 335a6ae..0cf1545 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 = &current_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;
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