Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 111 insertions, 5 deletions

diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 75ab79b3bde..d7deb7fc7eb 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -1,5 +1,111 @@
-#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
-#include "time_mm.c"
-#else
-#include "time_no.c"
-#endif
+/*
+ *  linux/arch/m68k/kernel/time.c
+ *
+ *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
+ *
+ * This file contains the m68k-specific time handling details.
+ * Most of the stuff is located in the machine specific files.
+ *
+ * 1997-09-10	Updated NTP code according to technical memorandum Jan '96
+ *		"A Kernel Model for Precision Timekeeping" by Dave Mills
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/irq_regs.h>
+
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/profile.h>
+
+/*
+ * timer_interrupt() needs to keep up the real-time clock,
+ * as well as call the "xtime_update()" routine every clocktick
+ */
+static irqreturn_t timer_interrupt(int irq, void *dummy)
+{
+	xtime_update(1);
+	update_process_times(user_mode(get_irq_regs()));
+	profile_tick(CPU_PROFILING);
+
+#ifdef CONFIG_HEARTBEAT
+	/* use power LED as a heartbeat instead -- much more useful
+	   for debugging -- based on the version for PReP by Cort */
+	/* acts like an actual heart beat -- ie thump-thump-pause... */
+	if (mach_heartbeat) {
+	    static unsigned cnt = 0, period = 0, dist = 0;
+
+	    if (cnt == 0 || cnt == dist)
+		mach_heartbeat( 1 );
+	    else if (cnt == 7 || cnt == dist+7)
+		mach_heartbeat( 0 );
+
+	    if (++cnt > period) {
+		cnt = 0;
+		/* The hyperbolic function below modifies the heartbeat period
+		 * length in dependency of the current (5min) load. It goes
+		 * through the points f(0)=126, f(1)=86, f(5)=51,
+		 * f(inf)->30. */
+		period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
+		dist = period / 4;
+	    }
+	}
+#endif /* CONFIG_HEARTBEAT */
+	return IRQ_HANDLED;
+}
+
+void read_persistent_clock(struct timespec *ts)
+{
+	struct rtc_time time;
+	ts->tv_sec = 0;
+	ts->tv_nsec = 0;
+
+	if (mach_hwclk) {
+		mach_hwclk(0, &time);
+
+		if ((time.tm_year += 1900) < 1970)
+			time.tm_year += 100;
+		ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday,
+				      time.tm_hour, time.tm_min, time.tm_sec);
+	}
+}
+
+void __init time_init(void)
+{
+	mach_sched_init(timer_interrupt);
+}
+
+#ifdef CONFIG_M68KCLASSIC
+
+u32 arch_gettimeoffset(void)
+{
+	return mach_gettimeoffset() * 1000;
+}
+
+static int __init rtc_init(void)
+{
+	struct platform_device *pdev;
+
+	if (!mach_hwclk)
+		return -ENODEV;
+
+	pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
+	if (IS_ERR(pdev))
+		return PTR_ERR(pdev);
+
+	return 0;
+}
+
+module_init(rtc_init);
+
+#endif /* CONFIG_M68KCLASSIC */