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Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6

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* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:
  cpuidle/x86/perf: fix power:cpu_idle double end events and throw cpu_idle events from the cpuidle layer
  intel_idle: open broadcast clock event
  cpuidle: CPUIDLE_FLAG_CHECK_BM is omap3_idle specific
  cpuidle: CPUIDLE_FLAG_TLB_FLUSHED is specific to intel_idle
  cpuidle: delete unused CPUIDLE_FLAG_SHALLOW, BALANCED, DEEP definitions
  SH, cpuidle: delete use of NOP CPUIDLE_FLAGS_SHALLOW
  cpuidle: delete NOP CPUIDLE_FLAG_POLL
  ACPI: processor_idle: delete use of NOP CPUIDLE_FLAGs
  cpuidle: Rename X86 specific idle poll state[0] from C0 to POLL
  ACPI, intel_idle: Cleanup idle= internal variables
  cpuidle: Make cpuidle_enable_device() call poll_idle_init()
  intel_idle: update Sandy Bridge core C-state residency targets
This commit is contained in:
Linus Torvalds
2011-01-13 20:15:18 -08:00
parent 2c79c69adc 43952886f0
commit dc8e7e3ec6
13 changed files with 145 additions and 113 deletions
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2
arch/arm/mach-omap2/cpuidle34xx.c
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@@ -47,6 +47,8 @@
#define OMAP3_STATE_MAX OMAP3_STATE_C7
#define CPUIDLE_FLAG_CHECK_BM 0x10000 /* use omap3_enter_idle_bm() */
struct omap3_processor_cx {
u8 valid;
u8 type;

5
arch/ia64/include/asm/processor.h
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@@ -717,8 +717,9 @@ prefetchw (const void *x)
#define spin_lock_prefetch(x) prefetchw(x)
extern unsigned long boot_option_idle_override;
extern unsigned long idle_halt;
extern unsigned long idle_nomwait;
enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT,
IDLE_NOMWAIT, IDLE_POLL};
#endif /* !__ASSEMBLY__ */

6
arch/ia64/kernel/process.c
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@@ -53,12 +53,8 @@
void (*ia64_mark_idle)(int);
unsigned long boot_option_idle_override = 0;
unsigned long boot_option_idle_override = IDLE_NO_OVERRIDE;
EXPORT_SYMBOL(boot_option_idle_override);
unsigned long idle_halt;
EXPORT_SYMBOL(idle_halt);
unsigned long idle_nomwait;
EXPORT_SYMBOL(idle_nomwait);
void (*pm_idle) (void);
EXPORT_SYMBOL(pm_idle);
void (*pm_power_off) (void);

1
arch/sh/kernel/cpu/shmobile/cpuidle.c
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@@ -81,7 +81,6 @@ void sh_mobile_setup_cpuidle(void)
state->target_residency = 1 * 2;
state->power_usage = 3;
state->flags = 0;
state->flags |= CPUIDLE_FLAG_SHALLOW;
state->flags |= CPUIDLE_FLAG_TIME_VALID;
state->enter = cpuidle_sleep_enter;

5
arch/x86/include/asm/processor.h
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@@ -761,10 +761,11 @@ extern void select_idle_routine(const struct cpuinfo_x86 *c);
extern void init_c1e_mask(void);
extern unsigned long boot_option_idle_override;
extern unsigned long idle_halt;
extern unsigned long idle_nomwait;
extern bool c1e_detected;
enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_NOMWAIT,
IDLE_POLL, IDLE_FORCE_MWAIT};
extern void enable_sep_cpu(void);
extern int sysenter_setup(void);

30
arch/x86/kernel/process.c
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@@ -22,11 +22,6 @@
#include <asm/i387.h>
#include <asm/debugreg.h>
unsigned long idle_halt;
EXPORT_SYMBOL(idle_halt);
unsigned long idle_nomwait;
EXPORT_SYMBOL(idle_nomwait);
struct kmem_cache *task_xstate_cachep;
EXPORT_SYMBOL_GPL(task_xstate_cachep);
@@ -327,7 +322,7 @@ long sys_execve(const char __user *name,
/*
* Idle related variables and functions
*/
unsigned long boot_option_idle_override = 0;
unsigned long boot_option_idle_override = IDLE_NO_OVERRIDE;
EXPORT_SYMBOL(boot_option_idle_override);
/*
@@ -386,6 +381,8 @@ void default_idle(void)
else
local_irq_enable();
current_thread_info()->status |= TS_POLLING;
trace_power_end(smp_processor_id());
trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id());
} else {
local_irq_enable();
/* loop is done by the caller */
@@ -443,8 +440,6 @@ EXPORT_SYMBOL_GPL(cpu_idle_wait);
*/
void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
{
trace_power_start(POWER_CSTATE, (ax>>4)+1, smp_processor_id());
trace_cpu_idle((ax>>4)+1, smp_processor_id());
if (!need_resched()) {
if (cpu_has(__this_cpu_ptr(&cpu_info), X86_FEATURE_CLFLUSH_MONITOR))
clflush((void *)&current_thread_info()->flags);
@@ -471,6 +466,8 @@ static void mwait_idle(void)
__sti_mwait(0, 0);
else
local_irq_enable();
trace_power_end(smp_processor_id());
trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id());
} else
local_irq_enable();
}
@@ -503,7 +500,6 @@ static void poll_idle(void)
*
* idle=mwait overrides this decision and forces the usage of mwait.
*/
static int __cpuinitdata force_mwait;
#define MWAIT_INFO 0x05
#define MWAIT_ECX_EXTENDED_INFO 0x01
@@ -513,7 +509,7 @@ static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
{
u32 eax, ebx, ecx, edx;
if (force_mwait)
if (boot_option_idle_override == IDLE_FORCE_MWAIT)
return 1;
if (c->cpuid_level < MWAIT_INFO)
@@ -633,9 +629,10 @@ static int __init idle_setup(char *str)
if (!strcmp(str, "poll")) {
printk("using polling idle threads.\n");
pm_idle = poll_idle;
} else if (!strcmp(str, "mwait"))
force_mwait = 1;
else if (!strcmp(str, "halt")) {
boot_option_idle_override = IDLE_POLL;
} else if (!strcmp(str, "mwait")) {
boot_option_idle_override = IDLE_FORCE_MWAIT;
} else if (!strcmp(str, "halt")) {
/*
* When the boot option of idle=halt is added, halt is
* forced to be used for CPU idle. In such case CPU C2/C3
@@ -644,8 +641,7 @@ static int __init idle_setup(char *str)
* the boot_option_idle_override.
*/
pm_idle = default_idle;
idle_halt = 1;
return 0;
boot_option_idle_override = IDLE_HALT;
} else if (!strcmp(str, "nomwait")) {
/*
* If the boot option of "idle=nomwait" is added,
@@ -653,12 +649,10 @@ static int __init idle_setup(char *str)
* states. In such case it won't touch the variable
* of boot_option_idle_override.
*/
idle_nomwait = 1;
return 0;
boot_option_idle_override = IDLE_NOMWAIT;
} else
return -1;
boot_option_idle_override = 1;
return 0;
}
early_param("idle", idle_setup);

4
arch/x86/kernel/process_32.c
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@@ -57,8 +57,6 @@
#include <asm/syscalls.h>
#include <asm/debugreg.h>
#include <trace/events/power.h>
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
/*
@@ -113,8 +111,6 @@ void cpu_idle(void)
stop_critical_timings();
pm_idle();
start_critical_timings();
trace_power_end(smp_processor_id());
trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id());
}
tick_nohz_restart_sched_tick();
preempt_enable_no_resched();

6
arch/x86/kernel/process_64.c
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@@ -51,8 +51,6 @@
#include <asm/syscalls.h>
#include <asm/debugreg.h>
#include <trace/events/power.h>
asmlinkage extern void ret_from_fork(void);
DEFINE_PER_CPU(unsigned long, old_rsp);
@@ -141,10 +139,6 @@ void cpu_idle(void)
pm_idle();
start_critical_timings();
trace_power_end(smp_processor_id());
trace_cpu_idle(PWR_EVENT_EXIT,
smp_processor_id());
/* In many cases the interrupt that ended idle
has already called exit_idle. But some idle
loops can be woken up without interrupt. */