diff options
Diffstat (limited to 'arch/sparc/kernel/time.c')
| -rw-r--r-- | arch/sparc/kernel/time.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c index 5a03e646b..68105c421 100644 --- a/arch/sparc/kernel/time.c +++ b/arch/sparc/kernel/time.c @@ -1,4 +1,4 @@ -/* $Id: time.c,v 1.53 2000/02/09 21:11:04 davem Exp $ +/* $Id: time.c,v 1.54 2000/04/13 08:14:30 anton Exp $ * linux/arch/sparc/kernel/time.c * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) @@ -70,6 +70,37 @@ struct intersil *intersil_clock; #endif +static spinlock_t ticker_lock = SPIN_LOCK_UNLOCKED; + +/* 32-bit Sparc specific profiling function. */ +void sparc_do_profile(unsigned long pc, unsigned long o7) +{ + if(prof_buffer && current->pid) { + extern int _stext; + extern int __copy_user_begin, __copy_user_end; + extern int __atomic_begin, __atomic_end; + extern int __bitops_begin, __bitops_end; + + if ((pc >= (unsigned long) &__copy_user_begin && + pc < (unsigned long) &__copy_user_end) || + (pc >= (unsigned long) &__atomic_begin && + pc < (unsigned long) &__atomic_end) || + (pc >= (unsigned long) &__bitops_begin && + pc < (unsigned long) &__bitops_end)) + pc = o7; + + pc -= (unsigned long) &_stext; + pc >>= prof_shift; + + spin_lock(&ticker_lock); + if(pc < prof_len) + prof_buffer[pc]++; + else + prof_buffer[prof_len - 1]++; + spin_unlock(&ticker_lock); + } +} + __volatile__ unsigned int *master_l10_counter; __volatile__ unsigned int *master_l10_limit; @@ -82,6 +113,11 @@ void timer_interrupt(int irq, void *dev_id, struct pt_regs * regs) /* last time the cmos clock got updated */ static long last_rtc_update=0; +#ifndef __SMP__ + if(!user_mode(regs)) + sparc_do_profile(regs->pc, regs->u_regs[UREG_RETPC]); +#endif + #ifdef CONFIG_SUN4 if((idprom->id_machtype == (SM_SUN4 | SM_4_260)) || (idprom->id_machtype == (SM_SUN4 | SM_4_110))) { |