# HG changeset patch
# User Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
# Node ID ec7a1ffd0ade064c8ed79ec3fb2df9d5907866c1
# Parent ddaaf7ca1c34fadf3741433c33bb676a0376adeb
[POWERPC][XEN] move idle_loop and add a "power save" hook
Signed-off-by: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
---
xen/arch/powerpc/domain.c | 32 +++++++++++++++++++++++++++++---
xen/arch/powerpc/setup.c | 18 ++----------------
2 files changed, 31 insertions(+), 19 deletions(-)
diff -r ddaaf7ca1c34 -r ec7a1ffd0ade xen/arch/powerpc/domain.c
--- a/xen/arch/powerpc/domain.c Fri Sep 01 12:19:41 2006 -0400
+++ b/xen/arch/powerpc/domain.c Fri Sep 01 12:31:56 2006 -0400
@@ -29,11 +29,10 @@
#include <xen/shutdown.h>
#include <xen/shadow.h>
#include <xen/mm.h>
+#include <xen/softirq.h>
#include <asm/htab.h>
#include <asm/current.h>
#include <asm/hcalls.h>
-
-extern void idle_loop(void);
#define next_arg(fmt, args) ({ \
unsigned long __arg; \
@@ -47,6 +46,7 @@ extern void idle_loop(void);
} \
__arg; \
})
+extern void idle_loop(void);
unsigned long hypercall_create_continuation(unsigned int op,
const char *format, ...)
@@ -179,7 +179,6 @@ void dump_pageframe_info(struct domain *
}
}
-
void context_switch(struct vcpu *prev, struct vcpu *next)
{
struct cpu_user_regs *stack_regs = guest_cpu_user_regs();
@@ -253,3 +252,30 @@ void arch_dump_domain_info(struct domain
void arch_dump_domain_info(struct domain *d)
{
}
+
+extern void sleep(void);
+static void safe_halt(void)
+{
+ int cpu = smp_processor_id();
+
+ while (!softirq_pending(cpu))
+ sleep();
+}
+
+static void default_idle(void)
+{
+ local_irq_disable();
+ if ( !softirq_pending(smp_processor_id()) )
+ safe_halt();
+ else
+ local_irq_enable();
+}
+
+void idle_loop(void)
+{
+ for ( ; ; ) {
+ page_scrub_schedule_work();
+ default_idle();
+ do_softirq();
+ }
+}
diff -r ddaaf7ca1c34 -r ec7a1ffd0ade xen/arch/powerpc/setup.c
--- a/xen/arch/powerpc/setup.c Fri Sep 01 12:19:41 2006 -0400
+++ b/xen/arch/powerpc/setup.c Fri Sep 01 12:31:56 2006 -0400
@@ -81,7 +81,6 @@ struct ns16550_defaults ns16550;
struct ns16550_defaults ns16550;
extern char __per_cpu_start[], __per_cpu_data_end[], __per_cpu_end[];
-extern void idle_loop(void);
/* move us to a header file */
extern void initialize_keytable(void);
@@ -99,21 +98,6 @@ unsigned long kernel_text_end(void)
unsigned long kernel_text_end(void)
{
return (unsigned long) &_etext;
-}
-
-void idle_loop(void)
-{
- int cpu = smp_processor_id();
-
- for ( ; ; )
- {
- while (!softirq_pending(cpu)) {
- void sleep(void);
- page_scrub_schedule_work();
- sleep();
- }
- do_softirq();
- }
}
static void __init do_initcalls(void)
@@ -208,6 +192,8 @@ static void __init start_of_day(void)
do_initcalls();
schedulers_start();
}
+
+extern void idle_loop(void);
void startup_cpu_idle_loop(void)
{
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