diff options
Diffstat (limited to 'arch/sparc64/kernel/time.c')
| -rw-r--r-- | arch/sparc64/kernel/time.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c index e599b48cb..a955e75df 100644 --- a/arch/sparc64/kernel/time.c +++ b/arch/sparc64/kernel/time.c @@ -1,4 +1,4 @@ -/* $Id: time.c,v 1.24 2000/03/02 02:00:25 davem Exp $ +/* $Id: time.c,v 1.25 2000/04/13 05:29:44 davem Exp $ * time.c: UltraSparc timer and TOD clock support. * * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) @@ -67,6 +67,34 @@ static __inline__ void timer_check_rtc(void) } } +void sparc64_do_profile(unsigned long pc, unsigned long o7) +{ + if (prof_buffer && current->pid) { + extern int _stext; + extern int rwlock_impl_begin, rwlock_impl_end; + extern int atomic_impl_begin, atomic_impl_end; + extern int __memcpy_begin, __memcpy_end; + extern int __bitops_begin, __bitops_end; + + if ((pc >= (unsigned long) &atomic_impl_begin && + pc < (unsigned long) &atomic_impl_end) || + (pc >= (unsigned long) &rwlock_impl_begin && + pc < (unsigned long) &rwlock_impl_end) || + (pc >= (unsigned long) &__memcpy_begin && + pc < (unsigned long) &__memcpy_end) || + (pc >= (unsigned long) &__bitops_begin && + pc < (unsigned long) &__bitops_end)) + pc = o7; + + pc -= (unsigned long) &_stext; + pc >>= prof_shift; + + if(pc >= prof_len) + pc = prof_len - 1; + atomic_inc((atomic_t *)&prof_buffer[pc]); + } +} + static void timer_interrupt(int irq, void *dev_id, struct pt_regs * regs) { unsigned long ticks, pstate; @@ -74,6 +102,10 @@ static void timer_interrupt(int irq, void *dev_id, struct pt_regs * regs) write_lock(&xtime_lock); do { +#ifndef __SMP__ + if ((regs->tstate & TSTATE_PRIV) != 0) + sparc64_do_profile(regs->tpc, regs->u_regs[UREG_RETPC]); +#endif do_timer(regs); /* Guarentee that the following sequences execute |