[PATCH 4/8] SGI x86_64 UV: Limit the number of ACPI messages

[Mike Travis]

Limit number of ACPI messages of the form:

[    0.000000] ACPI: LSAPIC (acpi_id[0x00] lsapic_id[0x00] lsapic_eid[0x00] enabled)

[   99.638655] processor ACPI0007:00: registered as cooling_device0

Cc: Zhang Rui <rui.zhang@xxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
Cc: Thomas Renninger <trenn@xxxxxxx>
Cc: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Myron Stowe <myron.stowe@xxxxxx>
Cc: Feng Tang <feng.tang@xxxxxxxxx>
Cc: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
Cc: Yinghai Lu <yhlu.kernel@xxxxxxxxx>
Cc: linux-acpi@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Mike Travis <travis@xxxxxxx>
---
 drivers/acpi/fan.c            |    7 ++++++-
 drivers/acpi/processor_core.c |    8 ++++++--
 drivers/acpi/tables.c         |   15 ++++++++++-----
 3 files changed, 22 insertions(+), 8 deletions(-)

--- linux.orig/drivers/acpi/fan.c
+++ linux/drivers/acpi/fan.c
@@ -243,6 +243,7 @@
 	int result = 0;
 	int state = 0;
 	struct thermal_cooling_device *cdev;
+	static int msgcnt;
 
 	if (!device)
 		return -EINVAL;
@@ -267,7 +268,11 @@
 		goto end;
 	}
 
-	dev_info(&device->dev, "registered as cooling_device%d\n", cdev->id);
+	if (msgcnt < 4 || !limit_console_output(false)) {
+		dev_info(&device->dev,
+			"registered as cooling_device%d\n", cdev->id);
+		msgcnt++;
+	}
 
 	device->driver_data = cdev;
 	result = sysfs_create_link(&device->dev.kobj,
--- linux.orig/drivers/acpi/processor_core.c
+++ linux/drivers/acpi/processor_core.c
@@ -775,6 +775,7 @@
 	struct acpi_processor *pr = NULL;
 	int result = 0;
 	struct sys_device *sysdev;
+	static int msgcnt;
 
 	pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
 	if (!pr)
@@ -845,8 +846,11 @@
 		goto err_power_exit;
 	}
 
-	dev_info(&device->dev, "registered as cooling_device%d\n",
-		 pr->cdev->id);
+	if (msgcnt < 4 || !limit_console_output(false)) {
+		dev_info(&device->dev, "registered as cooling_device%d\n",
+			 pr->cdev->id);
+		msgcnt++;
+	}
 
 	result = sysfs_create_link(&device->dev.kobj,
 				   &pr->cdev->device.kobj,
--- linux.orig/drivers/acpi/tables.c
+++ linux/drivers/acpi/tables.c
@@ -170,11 +170,16 @@
 	case ACPI_MADT_TYPE_LOCAL_SAPIC:
 		{
 			struct acpi_madt_local_sapic *p =
-			    (struct acpi_madt_local_sapic *)header;
-			printk(KERN_INFO PREFIX
-			       "LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n",
-			       p->processor_id, p->id, p->eid,
-			       (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
+				(struct acpi_madt_local_sapic *)header;
+
+			if (p->eid < 8 || !limit_console_output(false))
+				printk(KERN_INFO PREFIX
+					"LSAPIC (acpi_id[0x%02x] "
+						"lsapic_id[0x%02x] "
+						"lsapic_eid[0x%02x] %s)\n",
+					p->processor_id, p->id, p->eid,
+					(p->lapic_flags & ACPI_MADT_ENABLED) ?
+						"enabled" : "disabled");
 		}
 		break;
 

-- 
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