Merge branches 'tracing/ftrace' and 'linus' into tracing/core

Documentation/logo.txt

@@ -1,13 +1,4 @@
-This is the full-colour version of the currently unofficial Linux logo
-("currently unofficial" just means that there has been no paperwork and
-that I have not really announced it yet).  It was created by Larry Ewing,
-and is freely usable as long as you acknowledge Larry as the original
-artist. 
-
-Note that there are black-and-white versions of this available that
-scale down to smaller sizes and are better for letterheads or whatever
-you want to use it for: for the full range of logos take a look at
-Larry's web-page:
-
-	http://www.isc.tamu.edu/~lewing/linux/
+Tux is taking a three month sabbatical to work as a barber, so Tuz is
+standing in.  He's taken pains to ensure you'll hardly notice.
 
+Image by Andrew McGown and Josh Bush.  Image is licensed CC BY-SA.

MAINTAINERS

@@ -3882,6 +3882,15 @@ L:	linux-ide@vger.kernel.org
 T:	git kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git
 S:	Supported
 
+SERVER ENGINES 10Gbps NIC - BladeEngine 2 DRIVER
+P:	Sathya Perla
+M:	sathyap@serverengines.com
+P:      Subbu Seetharaman
+M:      subbus@serverengines.com
+L:      netdev@vger.kernel.org
+W:      http://www.serverengines.com
+S:      Supported
+
 SFC NETWORK DRIVER
 P:	Steve Hodgson
 P:	Ben Hutchings

arch/x86/kernel/kprobes.c

@@ -193,6 +193,9 @@ static int __kprobes can_boost(kprobe_opcode_t *opcodes)
 	kprobe_opcode_t opcode;
 	kprobe_opcode_t *orig_opcodes = opcodes;
 
+	if (search_exception_tables(opcodes))
+		return 0;	/* Page fault may occur on this address. */
+
 retry:
 	if (opcodes - orig_opcodes > MAX_INSN_SIZE - 1)
 		return 0;

arch/x86/kernel/tsc.c

@@ -273,30 +273,43 @@ static unsigned long pit_calibrate_tsc(u32 latch, unsigned long ms, int loopmin)
  * use the TSC value at the transitions to calculate a pretty
  * good value for the TSC frequencty.
  */
-static inline int pit_expect_msb(unsigned char val)
+static inline int pit_expect_msb(unsigned char val, u64 *tscp, unsigned long *deltap)
 {
-	int count = 0;
+	int count;
+	u64 tsc = 0;
 
 	for (count = 0; count < 50000; count++) {
 		/* Ignore LSB */
 		inb(0x42);
 		if (inb(0x42) != val)
 			break;
+		tsc = get_cycles();
 	}
-	return count > 50;
+	*deltap = get_cycles() - tsc;
+	*tscp = tsc;
+
+	/*
+	 * We require _some_ success, but the quality control
+	 * will be based on the error terms on the TSC values.
+	 */
+	return count > 5;
 }
 
 /*
- * How many MSB values do we want to see? We aim for a
- * 15ms calibration, which assuming a 2us counter read
- * error should give us roughly 150 ppm precision for
- * the calibration.
+ * How many MSB values do we want to see? We aim for
+ * a maximum error rate of 500ppm (in practice the
+ * real error is much smaller), but refuse to spend
+ * more than 25ms on it.
  */
-#define QUICK_PIT_MS 15
-#define QUICK_PIT_ITERATIONS (QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)
+#define MAX_QUICK_PIT_MS 25
+#define MAX_QUICK_PIT_ITERATIONS (MAX_QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)
 
 static unsigned long quick_pit_calibrate(void)
 {
+	int i;
+	u64 tsc, delta;
+	unsigned long d1, d2;
+
 	/* Set the Gate high, disable speaker */
 	outb((inb(0x61) & ~0x02) | 0x01, 0x61);
 
@@ -315,45 +328,52 @@ static unsigned long quick_pit_calibrate(void)
 	outb(0xff, 0x42);
 	outb(0xff, 0x42);
 
-	if (pit_expect_msb(0xff)) {
-		int i;
-		u64 t1, t2, delta;
-		unsigned char expect = 0xfe;
-
-		t1 = get_cycles();
-		for (i = 0; i < QUICK_PIT_ITERATIONS; i++, expect--) {
-			if (!pit_expect_msb(expect))
-				goto failed;
+	/*
+	 * The PIT starts counting at the next edge, so we
+	 * need to delay for a microsecond. The easiest way
+	 * to do that is to just read back the 16-bit counter
+	 * once from the PIT.
+	 */
+	inb(0x42);
+	inb(0x42);
+
+	if (pit_expect_msb(0xff, &tsc, &d1)) {
+		for (i = 1; i <= MAX_QUICK_PIT_ITERATIONS; i++) {
+			if (!pit_expect_msb(0xff-i, &delta, &d2))
+				break;
+
+			/*
+			 * Iterate until the error is less than 500 ppm
+			 */
+			delta -= tsc;
+			if (d1+d2 < delta >> 11)
+				goto success;
 		}
-		t2 = get_cycles();
-
-		/*
-		 * Make sure we can rely on the second TSC timestamp:
-		 */
-		if (!pit_expect_msb(expect))
-			goto failed;
-
-		/*
-		 * Ok, if we get here, then we've seen the
-		 * MSB of the PIT decrement QUICK_PIT_ITERATIONS
-		 * times, and each MSB had many hits, so we never
-		 * had any sudden jumps.
-		 *
-		 * As a result, we can depend on there not being
-		 * any odd delays anywhere, and the TSC reads are
-		 * reliable.
-		 *
-		 * kHz = ticks / time-in-seconds / 1000;
-		 * kHz = (t2 - t1) / (QPI * 256 / PIT_TICK_RATE) / 1000
-		 * kHz = ((t2 - t1) * PIT_TICK_RATE) / (QPI * 256 * 1000)
-		 */
-		delta = (t2 - t1)*PIT_TICK_RATE;
-		do_div(delta, QUICK_PIT_ITERATIONS*256*1000);
-		printk("Fast TSC calibration using PIT\n");
-		return delta;
 	}
-failed:
+	printk("Fast TSC calibration failed\n");
 	return 0;
+
+success:
+	/*
+	 * Ok, if we get here, then we've seen the
+	 * MSB of the PIT decrement 'i' times, and the
+	 * error has shrunk to less than 500 ppm.
+	 *
+	 * As a result, we can depend on there not being
+	 * any odd delays anywhere, and the TSC reads are
+	 * reliable (within the error). We also adjust the
+	 * delta to the middle of the error bars, just
+	 * because it looks nicer.
+	 *
+	 * kHz = ticks / time-in-seconds / 1000;
+	 * kHz = (t2 - t1) / (I * 256 / PIT_TICK_RATE) / 1000
+	 * kHz = ((t2 - t1) * PIT_TICK_RATE) / (I * 256 * 1000)
+	 */
+	delta += (long)(d2 - d1)/2;
+	delta *= PIT_TICK_RATE;
+	do_div(delta, i*256*1000);
+	printk("Fast TSC calibration using PIT\n");
+	return delta;
 }
 
 /**

drivers/acpi/bus.c

@@ -758,8 +758,7 @@ static int __init acpi_bus_init(void)
 	acpi_status status = AE_OK;
 	extern acpi_status acpi_os_initialize1(void);
 
-
-	status = acpi_os_initialize1();
+	acpi_os_initialize1();
 
 	status =
 	    acpi_enable_subsystem(ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE);
@@ -769,12 +768,6 @@ static int __init acpi_bus_init(void)
 		goto error1;
 	}
 
-	if (ACPI_FAILURE(status)) {
-		printk(KERN_ERR PREFIX
-		       "Unable to initialize ACPI OS objects\n");
-		goto error1;
-	}
-
 	/*
 	 * ACPI 2.0 requires the EC driver to be loaded and work before
 	 * the EC device is found in the namespace (i.e. before acpi_initialize_objects()

drivers/acpi/numa.c

@@ -277,7 +277,7 @@ int acpi_get_node(acpi_handle *handle)
 	int pxm, node = -1;
 
 	pxm = acpi_get_pxm(handle);
-	if (pxm >= 0)
+	if (pxm >= 0 && pxm < MAX_PXM_DOMAINS)
 		node = acpi_map_pxm_to_node(pxm);
 
 	return node;

drivers/acpi/osl.c

@@ -1324,54 +1324,6 @@ acpi_os_validate_interface (char *interface)
 	return AE_SUPPORT;
 }
 
-#ifdef	CONFIG_X86
-
-struct aml_port_desc {
-	uint	start;
-	uint	end;
-	char*   name;
-	char	warned;
-};
-
-static struct aml_port_desc aml_invalid_port_list[] = {
-	{0x20, 0x21, "PIC0", 0},
-	{0xA0, 0xA1, "PIC1", 0},
-	{0x4D0, 0x4D1, "ELCR", 0}
-};
-
-/*
- * valid_aml_io_address()
- *
- * if valid, return true
- * else invalid, warn once, return false
- */
-static bool valid_aml_io_address(uint address, uint length)
-{
-	int i;
-	int entries = sizeof(aml_invalid_port_list) / sizeof(struct aml_port_desc);
-
-	for (i = 0; i < entries; ++i) {
-		if ((address >= aml_invalid_port_list[i].start &&
-			address <= aml_invalid_port_list[i].end) ||
-			(address + length >= aml_invalid_port_list[i].start &&
-			address  + length <= aml_invalid_port_list[i].end))
-		{
-			if (!aml_invalid_port_list[i].warned)
-			{
-				printk(KERN_ERR "ACPI: Denied BIOS AML access"
-					" to invalid port 0x%x+0x%x (%s)\n",
-					address, length,
-					aml_invalid_port_list[i].name);
-				aml_invalid_port_list[i].warned = 1;
-			}
-			return false;	/* invalid */
-		}
-	}
-	return true;	/* valid */
-}
-#else
-static inline bool valid_aml_io_address(uint address, uint length) { return true; }
-#endif
 /******************************************************************************
  *
  * FUNCTION:    acpi_os_validate_address
@@ -1401,8 +1353,6 @@ acpi_os_validate_address (
 
 	switch (space_id) {
 	case ACPI_ADR_SPACE_SYSTEM_IO:
-		if (!valid_aml_io_address(address, length))
-			return AE_AML_ILLEGAL_ADDRESS;
 	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
 		/* Only interference checks against SystemIO and SytemMemory
 		   are needed */

drivers/acpi/sleep.c

@@ -378,6 +378,22 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"),
 		},
 	},
+	{
+	.callback = init_old_suspend_ordering,
+	.ident = "Asus Pundit P1-AH2 (M2N8L motherboard)",
+	.matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTek Computer INC."),
+		DMI_MATCH(DMI_BOARD_NAME, "M2N8L"),
+		},
+	},
+	{
+	.callback = init_set_sci_en_on_resume,
+	.ident = "Toshiba Satellite L300",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Satellite L300"),
+		},
+	},
 	{},
 };
 #endif /* CONFIG_SUSPEND */