linux-kernel - [PATCH] ACPI: Add configuration item to configure ACPICA error logs out

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Date:	Fri, 13 May 2016 10:26:54 +0800
From:	Lv Zheng <lv.zheng@...el.com>
To:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>
Cc:	Lv Zheng <lv.zheng@...el.com>, Lv Zheng <zetalog@...il.com>,
	<linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org
Subject: [PATCH] ACPI: Add configuration item to configure ACPICA error logs out

Sometimes, we need to disable ACPICA error logs to leave only ACPICA
debug logs enabled for debugging purpose. This is useful when ACPICA error
logs become a flood.

Reference: https://bugzilla.kernel.org/show_bug.cgi?id=114201
Signed-off-by: Lv Zheng <lv.zheng@...el.com>
---
 drivers/acpi/Kconfig            |    7 +++++++
 include/acpi/platform/aclinux.h |    4 ++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index b7e2e77..ebb8d3b 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -321,6 +321,13 @@ config ACPI_TABLE_UPGRADE
 	  initrd, therefore it's safe to say Y.
 	  See Documentation/acpi/initrd_table_override.txt for details
 
+config ACPI_NO_ERROR_MESSAGES
+	bool "Disable error messages"
+	default n
+	help
+	  The ACPI subsystem can produce error messages. Saying Y disables
+	  this output.
+
 config ACPI_DEBUG
 	bool "Debug Statements"
 	default n
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 45c2d65..a6d9217 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -73,6 +73,10 @@
 #define ACPI_DEBUGGER
 #endif
 
+#ifdef CONFIG_ACPI_NO_ERROR_MESSAGES
+#define ACPI_NO_ERROR_MESSAGES
+#endif
+
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/ctype.h>
-- 
1.7.10