From 872aaa65a6ef30edef05a89977f7021f9840b215 Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Mon, 10 Jul 2006 04:45:08 -0700 Subject: [PATCH] uml: timer handler tidying Get rid of a user of timer_irq_inited (and first_tick) by observing that prev_ticks can be used to decide if this is the first call. Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/time_kern.c | 20 ++++---------------- 1 file changed, 4 insertions(+), 16 deletions(-) (limited to 'arch/um') diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c index 8e56c58320b..552ca1cb984 100644 --- a/arch/um/kernel/time_kern.c +++ b/arch/um/kernel/time_kern.c @@ -38,7 +38,6 @@ unsigned long long sched_clock(void) /* Changed at early boot */ int timer_irq_inited = 0; -static int first_tick; static unsigned long long prev_nsecs; #ifdef CONFIG_UML_REAL_TIME_CLOCK static long long delta; /* Deviation per interval */ @@ -48,15 +47,8 @@ void timer_irq(union uml_pt_regs *regs) { unsigned long long ticks = 0; - if(!timer_irq_inited){ - /* This is to ensure that ticks don't pile up when - * the timer handler is suspended */ - first_tick = 0; - return; - } - - if(first_tick){ #ifdef CONFIG_UML_REAL_TIME_CLOCK + if(prev_nsecs){ /* We've had 1 tick */ unsigned long long nsecs = os_nsecs(); @@ -69,15 +61,11 @@ void timer_irq(union uml_pt_regs *regs) ticks += (delta * HZ) / BILLION; delta -= (ticks * BILLION) / HZ; + } + else prev_nsecs = os_nsecs(); #else - ticks = 1; + ticks = 1; #endif - } - else { - prev_nsecs = os_nsecs(); - first_tick = 1; - } - while(ticks > 0){ do_IRQ(TIMER_IRQ, regs); ticks--; -- cgit v1.2.3