From 3c1ee244e6bf987a10bdcb6224757a8b651c88fb Mon Sep 17 00:00:00 2001
From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Date: Fri, 28 Aug 1998 23:29:33 +0000
Subject: added profiling again.

---
 arch/mips/kernel/time.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

(limited to 'arch')

diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 9c51d1eb7..bf056a122 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -6,7 +6,7 @@
  * This file contains the time handling details for PC-style clocks as
  * found in some MIPS systems.
  *
- * $Id: time.c,v 1.5 1998/06/06 12:41:48 tsbogend Exp $
+ * $Id: time.c,v 1.6 1998/08/25 09:14:43 ralf Exp $
  */
 #include <linux/errno.h>
 #include <linux/init.h>
@@ -329,6 +329,25 @@ static long last_rtc_update = 0;
 static void inline
 timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 {
+#ifdef CONFIG_PROFILE
+	if(!user_mode(regs)) {
+		if (prof_buffer && current->pid) {
+			extern int _stext;
+			unsigned long pc = regs->cp0_epc;
+
+			pc -= (unsigned long) &_stext;
+			pc >>= prof_shift;
+			/*
+			 * Dont ignore out-of-bounds pc values silently,
+			 * put them into the last histogram slot, so if
+			 * present, they will show up as a sharp peak.
+			 */
+			if (pc > prof_len-1)
+				pc = prof_len-1;
+			atomic_inc((atomic_t *)&prof_buffer[pc]);
+		}
+	}
+#endif
 	do_timer(regs);
 
 	/*
-- 
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