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Commit e6d9bfc6 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 

Pull powerpc non-virtualized cpuidle from Ben Herrenschmidt:
 "This is the branch I mentioned in my other pull request which contains
  our improved cpuidle support for the "powernv" platform
  (non-virtualized).

  It adds support for the "fast sleep" feature of the processor which
  provides higher power savings than our usual "nap" mode but at the
  cost of losing the timers while asleep, and thus exploits the new
  timer broadcast framework to work around that limitation.

  It's based on a tip timer tree that you seem to have already merged"

* 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  cpuidle/powernv: Parse device tree to setup idle states
  cpuidle/powernv: Add "Fast-Sleep" CPU idle state
  powerpc/powernv: Add OPAL call to resync timebase on wakeup
  powerpc/powernv: Add context management for Fast Sleep
  powerpc: Split timer_interrupt() into timer handling and interrupt handling routines
  powerpc: Implement tick broadcast IPI as a fixed IPI message
  powerpc: Free up the slot of PPC_MSG_CALL_FUNC_SINGLE IPI message
parents 235c7b9f 0888839c

arch/powerpc/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -130,6 +130,8 @@ config PPC 
	select GENERIC_CMOS_UPDATE

	select GENERIC_TIME_VSYSCALL_OLD

	select GENERIC_CLOCKEVENTS

	select GENERIC_CLOCKEVENTS_BROADCAST if SMP

	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST

	select GENERIC_STRNCPY_FROM_USER

	select GENERIC_STRNLEN_USER

	select HAVE_MOD_ARCH_SPECIFIC

arch/powerpc/include/asm/opal.h

+2 −0
Original line number Diff line number Diff line
@@ -161,6 +161,7 @@ extern int opal_enter_rtas(struct rtas_args *args, 
#define OPAL_FLASH_VALIDATE			76

#define OPAL_FLASH_MANAGE			77

#define OPAL_FLASH_UPDATE			78

#define OPAL_RESYNC_TIMEBASE			79

#define OPAL_DUMP_INIT				81

#define OPAL_DUMP_INFO				82

#define OPAL_DUMP_READ				83
@@ -923,6 +924,7 @@ extern int opal_machine_check(struct pt_regs *regs); 
extern bool opal_mce_check_early_recovery(struct pt_regs *regs);



extern void opal_shutdown(void);

extern int opal_resync_timebase(void);



extern void opal_lpc_init(void);

arch/powerpc/include/asm/processor.h

+1 −0
Original line number Diff line number Diff line
@@ -450,6 +450,7 @@ enum idle_boot_override {IDLE_NO_OVERRIDE = 0, IDLE_POWERSAVE_OFF}; 


extern int powersave_nap;	/* set if nap mode can be used in idle loop */

extern void power7_nap(void);

extern void power7_sleep(void);

extern void flush_instruction_cache(void);

extern void hard_reset_now(void);

extern void poweroff_now(void);

arch/powerpc/include/asm/smp.h

+1 −1
Original line number Diff line number Diff line
@@ -120,7 +120,7 @@ extern int cpu_to_core_id(int cpu); 
 * in /proc/interrupts will be wrong!!! --Troy */

#define PPC_MSG_CALL_FUNCTION   0

#define PPC_MSG_RESCHEDULE      1

#define PPC_MSG_CALL_FUNC_SINGLE	2

#define PPC_MSG_TICK_BROADCAST	2

#define PPC_MSG_DEBUGGER_BREAK  3



/* for irq controllers that have dedicated ipis per message (4) */

arch/powerpc/include/asm/time.h

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ extern struct clock_event_device decrementer_clockevent; 
struct rtc_time;

extern void to_tm(int tim, struct rtc_time * tm);

extern void GregorianDay(struct rtc_time *tm);

extern void tick_broadcast_ipi_handler(void);



extern void generic_calibrate_decr(void);