diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2018-05-05 03:19:31 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-06-03 20:40:27 +1000 |
| commit | 3f984620f9a4fe089c0a3c951b75a460211394bb (patch) | |
| tree | df13a8c219ca5d8cdafb8ac51b92769ec4ba18f4 /arch/powerpc/include/asm | |
| parent | 3d3a6021ddcbe9c31520e4e7b65e5ce5dc58274d (diff) | |
| download | op-kernel-dev-3f984620f9a4fe089c0a3c951b75a460211394bb.zip op-kernel-dev-3f984620f9a4fe089c0a3c951b75a460211394bb.tar.gz | |
powerpc: generic clockevents broadcast receiver call tick_receive_broadcast
The broadcast tick recipient can call tick_receive_broadcast rather
than re-running the full timer interrupt.
It does not have to check for the next event time, because the sender
already determined the timer has expired. It does not have to test
irq_work_pending, because that's a direct decrementer interrupt and
does not go through the clock events subsystem. And it does not have
to read PURR because that was removed with the previous patch.
This results in no code size change, but both the decrementer and
broadcast path lengths are reduced.
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/hw_irq.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/time.h | 1 |
2 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index 3be87664..9aec723 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -55,6 +55,7 @@ extern void replay_system_reset(void); extern void __replay_interrupt(unsigned int vector); extern void timer_interrupt(struct pt_regs *); +extern void timer_broadcast_interrupt(void); extern void performance_monitor_exception(struct pt_regs *regs); extern void WatchdogException(struct pt_regs *regs); extern void unknown_exception(struct pt_regs *regs); diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h index c965c79..69b89f9 100644 --- a/arch/powerpc/include/asm/time.h +++ b/arch/powerpc/include/asm/time.h @@ -28,7 +28,6 @@ extern struct clock_event_device decrementer_clockevent; struct rtc_time; extern void to_tm(int tim, struct rtc_time * tm); -extern void tick_broadcast_ipi_handler(void); extern void generic_calibrate_decr(void); extern void hdec_interrupt(struct pt_regs *regs); |
