linux-kernel - Re: [PATCH] acpi: simplify module

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Message-Id: <200903110927.12792.rusty@rustcorp.com.au>
Date:	Wed, 11 Mar 2009 09:27:12 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	"yakui_zhao" <yakui.zhao@...el.com>
Cc:	"lenb@...nel.org" <lenb@...nel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] acpi: simplify module_param namespace

On Monday 09 March 2009 12:50:44 yakui_zhao wrote:
> On Sat, 2009-03-07 at 10:58 +0800, Rusty Russell wrote:
> > -obj-y				+= osl.o utils.o reboot.o\
> > +obj-y				+= acpi.o \
> >  					acpica/
> 
> If so, it can't be guaranteed that the EC driver is initialized before
> the power resource driver.

Ah, thankyou, I had not read that comment.

This version is bigger, but simpler, and doesn't change link order.  It just
moves everything into the acpi module.

Subject: acpi: simplify module_param namespace

Impact: cleanup

Rather than overriding MODULE_PARAM_PREFIX, build via acpi.o so
KBUILD_MODNAME is set to "acpi".

This is the logical way to do it, even though acpi cannot be a module
due to these config options being bool.

Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
---
 drivers/acpi/Makefile |   57 ++++++++++++++++++++++++++------------------------
 drivers/acpi/debug.c  |    5 ----
 drivers/acpi/power.c  |    4 ---
 drivers/acpi/system.c |    4 ---
 4 files changed, 30 insertions(+), 40 deletions(-)

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -14,13 +14,16 @@ obj-$(CONFIG_X86)		+= blacklist.o
 #
 # ACPI Core Subsystem (Interpreter)
 #
-obj-y				+= osl.o utils.o reboot.o\
+obj-y				+= acpi.o \
 					acpica/
 
+# Everything below is in the "acpi." module_param namespace.
+acpi-y				+= osl.o utils.o reboot.o
+
 # sleep related files
-obj-y				+= wakeup.o
-obj-y				+= sleep.o
-obj-$(CONFIG_ACPI_SLEEP)	+= proc.o
+acpi-y				+= wakeup.o
+acpi-y				+= sleep.o
+acpi-$(CONFIG_ACPI_SLEEP)	+= proc.o
 
 
 #
@@ -32,30 +35,30 @@ processor-objs	+= processor_perflib.o
 processor-objs	+= processor_perflib.o
 endif
 
-obj-y				+= bus.o glue.o
-obj-y				+= scan.o
+acpi-y				+= bus.o glue.o
+acpi-y				+= scan.o
 # Keep EC driver first. Initialization of others depend on it.
-obj-y				+= ec.o
-obj-$(CONFIG_ACPI_AC) 		+= ac.o
-obj-$(CONFIG_ACPI_BATTERY)	+= battery.o
-obj-$(CONFIG_ACPI_BUTTON)	+= button.o
-obj-$(CONFIG_ACPI_FAN)		+= fan.o
-obj-$(CONFIG_ACPI_DOCK)		+= dock.o
-obj-$(CONFIG_ACPI_VIDEO)	+= video.o
+acpi-y				+= ec.o
+acpi-$(CONFIG_ACPI_AC) 		+= ac.o
+acpi-$(CONFIG_ACPI_BATTERY)	+= battery.o
+acpi-$(CONFIG_ACPI_BUTTON)	+= button.o
+acpi-$(CONFIG_ACPI_FAN)		+= fan.o
+acpi-$(CONFIG_ACPI_DOCK)	+= dock.o
+acpi-$(CONFIG_ACPI_VIDEO)	+= video.o
 ifdef CONFIG_ACPI_VIDEO
-obj-y				+= video_detect.o
+acpi-y				+= video_detect.o
 endif
 
-obj-y				+= pci_root.o pci_link.o pci_irq.o pci_bind.o
-obj-$(CONFIG_ACPI_PCI_SLOT)	+= pci_slot.o
-obj-$(CONFIG_ACPI_PROCESSOR)	+= processor.o
-obj-$(CONFIG_ACPI_CONTAINER)	+= container.o
-obj-$(CONFIG_ACPI_THERMAL)	+= thermal.o
-obj-y				+= power.o
-obj-y				+= system.o event.o
-obj-$(CONFIG_ACPI_DEBUG)	+= debug.o
-obj-$(CONFIG_ACPI_NUMA)		+= numa.o
-obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)	+= acpi_memhotplug.o
-obj-$(CONFIG_ACPI_PROCFS_POWER)	+= cm_sbs.o
-obj-$(CONFIG_ACPI_SBS)		+= sbshc.o
-obj-$(CONFIG_ACPI_SBS)		+= sbs.o
+acpi-y				+= pci_root.o pci_link.o pci_irq.o pci_bind.o
+acpi-$(CONFIG_ACPI_PCI_SLOT)	+= pci_slot.o
+acpi-$(CONFIG_ACPI_PROCESSOR)	+= processor.o
+acpi-$(CONFIG_ACPI_CONTAINER)	+= container.o
+acpi-$(CONFIG_ACPI_THERMAL)	+= thermal.o
+acpi-y				+= power.o
+acpi-y				+= system.o event.o
+acpi-$(CONFIG_ACPI_DEBUG)	+= debug.o
+acpi-$(CONFIG_ACPI_NUMA)	+= numa.o
+acpi-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o
+acpi-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o
+acpi-$(CONFIG_ACPI_SBS)		+= sbshc.o
+acpi-$(CONFIG_ACPI_SBS)		+= sbs.o
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -12,11 +12,6 @@
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("debug");
-
-#ifdef MODULE_PARAM_PREFIX
-#undef MODULE_PARAM_PREFIX
-#endif
-#define MODULE_PARAM_PREFIX "acpi."
 
 struct acpi_dlayer {
 	const char *name;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -54,10 +54,6 @@ ACPI_MODULE_NAME("power");
 #define ACPI_POWER_RESOURCE_STATE_ON	0x01
 #define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF
 
-#ifdef MODULE_PARAM_PREFIX
-#undef MODULE_PARAM_PREFIX
-#endif
-#define MODULE_PARAM_PREFIX "acpi."
 int acpi_power_nocheck;
 module_param_named(power_nocheck, acpi_power_nocheck, bool, 000);
 
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -33,10 +33,6 @@
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("system");
-#ifdef MODULE_PARAM_PREFIX
-#undef MODULE_PARAM_PREFIX
-#endif
-#define MODULE_PARAM_PREFIX "acpi."
 
 #define ACPI_SYSTEM_CLASS		"system"
 #define ACPI_SYSTEM_DEVICE_NAME		"System"
--
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