---

yaml
---
r: 143293
b: "refs/heads/rpi-3.2.27+kamal-st7735fb"
c: 8897c18
h: "refs/heads/rpi-3.2.27+kamal-st7735fb"
i:
  143291: e71cba8
v: v3

Author: lenb

[refs]

@@ -1,2 +1,2 @@
 ---
-"refs/heads/rpi-3.2.27+kamal-st7735fb": db954b5898dd3ef3ef93f4144158ea8f97deb058
+"refs/heads/rpi-3.2.27+kamal-st7735fb": 8897c1859521cf33077256725b2377164b130c75

trunk/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c

@@ -68,6 +68,7 @@ struct acpi_cpufreq_data {
 	unsigned int max_freq;
 	unsigned int resume;
 	unsigned int cpu_feature;
+	u64 saved_aperf, saved_mperf;
 };
 
 static DEFINE_PER_CPU(struct acpi_cpufreq_data *, drv_data);
@@ -241,26 +242,23 @@ static u32 get_cur_val(const struct cpumask *mask)
 	return cmd.val;
 }
 
-struct perf_cur {
+struct perf_pair {
 	union {
 		struct {
 			u32 lo;
 			u32 hi;
 		} split;
 		u64 whole;
-	} aperf_cur, mperf_cur;
+	} aperf, mperf;
 };
 
 
 static long read_measured_perf_ctrs(void *_cur)
 {
-	struct perf_cur *cur = _cur;
+	struct perf_pair *cur = _cur;
 
-	rdmsr(MSR_IA32_APERF, cur->aperf_cur.split.lo, cur->aperf_cur.split.hi);
-	rdmsr(MSR_IA32_MPERF, cur->mperf_cur.split.lo, cur->mperf_cur.split.hi);
-
-	wrmsr(MSR_IA32_APERF, 0, 0);
-	wrmsr(MSR_IA32_MPERF, 0, 0);
+	rdmsr(MSR_IA32_APERF, cur->aperf.split.lo, cur->aperf.split.hi);
+	rdmsr(MSR_IA32_MPERF, cur->mperf.split.lo, cur->mperf.split.hi);
 
 	return 0;
 }
@@ -281,52 +279,57 @@ static long read_measured_perf_ctrs(void *_cur)
 static unsigned int get_measured_perf(struct cpufreq_policy *policy,
 				      unsigned int cpu)
 {
-	struct perf_cur cur;
+	struct perf_pair readin, cur;
 	unsigned int perf_percent;
 	unsigned int retval;
 
-	if (!work_on_cpu(cpu, read_measured_perf_ctrs, &cur))
+	if (!work_on_cpu(cpu, read_measured_perf_ctrs, &readin))
 		return 0;
 
+	cur.aperf.whole = readin.aperf.whole -
+				per_cpu(drv_data, cpu)->saved_aperf;
+	cur.mperf.whole = readin.mperf.whole -
+				per_cpu(drv_data, cpu)->saved_mperf;
+	per_cpu(drv_data, cpu)->saved_aperf = readin.aperf.whole;
+	per_cpu(drv_data, cpu)->saved_mperf = readin.mperf.whole;
+
 #ifdef __i386__
 	/*
 	 * We dont want to do 64 bit divide with 32 bit kernel
 	 * Get an approximate value. Return failure in case we cannot get
 	 * an approximate value.
 	 */
-	if (unlikely(cur.aperf_cur.split.hi || cur.mperf_cur.split.hi)) {
+	if (unlikely(cur.aperf.split.hi || cur.mperf.split.hi)) {
 		int shift_count;
 		u32 h;
 
-		h = max_t(u32, cur.aperf_cur.split.hi, cur.mperf_cur.split.hi);
+		h = max_t(u32, cur.aperf.split.hi, cur.mperf.split.hi);
 		shift_count = fls(h);
 
-		cur.aperf_cur.whole >>= shift_count;
-		cur.mperf_cur.whole >>= shift_count;
+		cur.aperf.whole >>= shift_count;
+		cur.mperf.whole >>= shift_count;
 	}
 
-	if (((unsigned long)(-1) / 100) < cur.aperf_cur.split.lo) {
+	if (((unsigned long)(-1) / 100) < cur.aperf.split.lo) {
 		int shift_count = 7;
-		cur.aperf_cur.split.lo >>= shift_count;
-		cur.mperf_cur.split.lo >>= shift_count;
+		cur.aperf.split.lo >>= shift_count;
+		cur.mperf.split.lo >>= shift_count;
 	}
 
-	if (cur.aperf_cur.split.lo && cur.mperf_cur.split.lo)
-		perf_percent = (cur.aperf_cur.split.lo * 100) /
-				cur.mperf_cur.split.lo;
+	if (cur.aperf.split.lo && cur.mperf.split.lo)
+		perf_percent = (cur.aperf.split.lo * 100) / cur.mperf.split.lo;
 	else
 		perf_percent = 0;
 
 #else
-	if (unlikely(((unsigned long)(-1) / 100) < cur.aperf_cur.whole)) {
+	if (unlikely(((unsigned long)(-1) / 100) < cur.aperf.whole)) {
 		int shift_count = 7;
-		cur.aperf_cur.whole >>= shift_count;
-		cur.mperf_cur.whole >>= shift_count;
+		cur.aperf.whole >>= shift_count;
+		cur.mperf.whole >>= shift_count;
 	}
 
-	if (cur.aperf_cur.whole && cur.mperf_cur.whole)
-		perf_percent = (cur.aperf_cur.whole * 100) /
-				cur.mperf_cur.whole;
+	if (cur.aperf.whole && cur.mperf.whole)
+		perf_percent = (cur.aperf.whole * 100) / cur.mperf.whole;
 	else
 		perf_percent = 0;
 

trunk/arch/x86/kernel/cpu/cpufreq/longhaul.c

@@ -33,7 +33,6 @@
 #include <linux/timex.h>
 #include <linux/io.h>
 #include <linux/acpi.h>
-#include <linux/kernel.h>
 
 #include <asm/msr.h>
 #include <acpi/processor.h>

trunk/drivers/acpi/acpica/hwvalid.c

@@ -90,7 +90,6 @@ static const struct acpi_port_info acpi_protected_ports[] = {
 	{"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP},
 	{"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP},
 	{"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP},
-	{"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP},
 	{"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP},
 	{"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP},
 	{"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP},

trunk/drivers/acpi/battery.c

@@ -903,7 +903,7 @@ static struct acpi_driver acpi_battery_driver = {
 		},
 };
 
-static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie)
+static void acpi_battery_init_async(void *unused, async_cookie_t cookie)
 {
 	if (acpi_disabled)
 		return;

trunk/drivers/acpi/proc.c

@@ -343,25 +343,21 @@ acpi_system_write_alarm(struct file *file,
 }
 #endif				/* HAVE_ACPI_LEGACY_ALARM */
 
-extern struct list_head acpi_wakeup_device_list;
-extern spinlock_t acpi_device_lock;
-
 static int
 acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
 {
 	struct list_head *node, *next;
 
 	seq_printf(seq, "Device\tS-state\t  Status   Sysfs node\n");
 
-	spin_lock(&acpi_device_lock);
+	mutex_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev =
 		    container_of(node, struct acpi_device, wakeup_list);
 		struct device *ldev;
 
 		if (!dev->wakeup.flags.valid)
 			continue;
-		spin_unlock(&acpi_device_lock);
 
 		ldev = acpi_get_physical_device(dev->handle);
 		seq_printf(seq, "%s\t  S%d\t%c%-8s  ",
@@ -376,9 +372,8 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
 		seq_printf(seq, "\n");
 		put_device(ldev);
 
-		spin_lock(&acpi_device_lock);
 	}
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 	return 0;
 }
 
@@ -409,7 +404,7 @@ acpi_system_write_wakeup_device(struct file *file,
 	strbuf[len] = '\0';
 	sscanf(strbuf, "%s", str);
 
-	spin_lock(&acpi_device_lock);
+	mutex_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev =
 		    container_of(node, struct acpi_device, wakeup_list);
@@ -446,7 +441,7 @@ acpi_system_write_wakeup_device(struct file *file,
 			}
 		}
 	}
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 	return count;
 }
 

trunk/drivers/acpi/scan.c

@@ -24,7 +24,7 @@ extern struct acpi_device *acpi_root;
 
 static LIST_HEAD(acpi_device_list);
 static LIST_HEAD(acpi_bus_id_list);
-DEFINE_SPINLOCK(acpi_device_lock);
+DEFINE_MUTEX(acpi_device_lock);
 LIST_HEAD(acpi_wakeup_device_list);
 
 struct acpi_device_bus_id{
@@ -491,7 +491,6 @@ static int acpi_device_register(struct acpi_device *device,
 	 */
 	INIT_LIST_HEAD(&device->children);
 	INIT_LIST_HEAD(&device->node);
-	INIT_LIST_HEAD(&device->g_list);
 	INIT_LIST_HEAD(&device->wakeup_list);
 
 	new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
@@ -500,7 +499,7 @@ static int acpi_device_register(struct acpi_device *device,
 		return -ENOMEM;
 	}
 
-	spin_lock(&acpi_device_lock);
+	mutex_lock(&acpi_device_lock);
 	/*
 	 * Find suitable bus_id and instance number in acpi_bus_id_list
 	 * If failed, create one and link it into acpi_bus_id_list
@@ -521,14 +520,12 @@ static int acpi_device_register(struct acpi_device *device,
 	}
 	dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
 
-	if (device->parent) {
+	if (device->parent)
 		list_add_tail(&device->node, &device->parent->children);
-		list_add_tail(&device->g_list, &device->parent->g_list);
-	} else
-		list_add_tail(&device->g_list, &acpi_device_list);
+
 	if (device->wakeup.flags.valid)
 		list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 
 	if (device->parent)
 		device->dev.parent = &parent->dev;
@@ -549,28 +546,22 @@ static int acpi_device_register(struct acpi_device *device,
 	device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
 	return 0;
   end:
-	spin_lock(&acpi_device_lock);
-	if (device->parent) {
+	mutex_lock(&acpi_device_lock);
+	if (device->parent)
 		list_del(&device->node);
-		list_del(&device->g_list);
-	} else
-		list_del(&device->g_list);
 	list_del(&device->wakeup_list);
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 	return result;
 }
 
 static void acpi_device_unregister(struct acpi_device *device, int type)
 {
-	spin_lock(&acpi_device_lock);
-	if (device->parent) {
+	mutex_lock(&acpi_device_lock);
+	if (device->parent)
 		list_del(&device->node);
-		list_del(&device->g_list);
-	} else
-		list_del(&device->g_list);
 
 	list_del(&device->wakeup_list);
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 
 	acpi_detach_data(device->handle, acpi_bus_data_handler);
 

trunk/drivers/acpi/sleep.h

@@ -5,3 +5,6 @@ extern int acpi_suspend (u32 state);
 extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
 extern void acpi_enable_wakeup_device(u8 sleep_state);
 extern void acpi_disable_wakeup_device(u8 sleep_state);
+
+extern struct list_head acpi_wakeup_device_list;
+extern struct mutex acpi_device_lock;