patch-2.3.11 linux/arch/alpha/kernel/irq.h

• Lines: 20
• Date: Mon Jul 12 07:49:36 1999
• Orig file: v2.3.10/linux/arch/alpha/kernel/irq.h
• Orig date: Wed Dec 30 15:06:22 1998

diff -u --recursive --new-file v2.3.10/linux/arch/alpha/kernel/irq.h linux/arch/alpha/kernel/irq.h
@@ -31,3 +31,19 @@
 #define TIMER_IRQ  RTC_IRQ		 /* timer is the rtc */
 #endif
 
+extern char _stext;
+static inline void alpha_do_profile (unsigned long pc)
+{
+	if (prof_buffer && current->pid) {
+		pc -= (unsigned long) &_stext;
+		pc >>= prof_shift;
+		/*
+		 * Don't 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]);
+	}
+}