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Date: Thu, 12 Mar 2009 09:07:19 +1030
From: Rusty Russell <rusty@...tcorp.com.au>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: "yakui_zhao" <yakui.zhao@...el.com>,
"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 Wednesday 11 March 2009 14:21:24 Stephen Rothwell wrote:
> Hi Rusty,
>
> On Wed, 11 Mar 2009 09:27:12 +1030 Rusty Russell <rusty@...tcorp.com.au> wrote:
> >
> > This version is bigger, but simpler, and doesn't change link order. It just
> > moves everything into the acpi module.
>
> So we end up with one big acpi.ko module instead of separate modules
> (like battery.ko, dock.ko) some of which we may not have needed to
> load? Just clarifying.
Oops. Good point.
The built-in only parts of ACPI should all be one "module". The rest should
still be separate modules.
Third time for sure!
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. Those parts of ACPI which can
be modular are not built into the acpi "module".
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
---
drivers/acpi/Makefile | 68 ++++++++++++++++++++++++++------------------------
drivers/acpi/debug.c | 5 ---
drivers/acpi/power.c | 4 --
drivers/acpi/system.c | 4 --
4 files changed, 36 insertions(+), 45 deletions(-)
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -14,48 +14,52 @@ obj-$(CONFIG_X86) += blacklist.o
#
# ACPI Core Subsystem (Interpreter)
#
-obj-y += osl.o utils.o reboot.o\
+obj-y += acpi.o \
acpica/
+# All the builtin files are in the "acpi." module_param namespace.
+acpi-y += osl.o utils.o reboot.o
+
# sleep related files
-obj-y += wakeup.o
-obj-y += sleep.o
-obj-$(CONFIG_ACPI_SLEEP) += proc.o
+acpi-y += wakeup.o
+acpi-y += sleep.o
+acpi-$(CONFIG_ACPI_SLEEP) += proc.o
#
# ACPI Bus and Device Drivers
#
+acpi-y += bus.o glue.o
+acpi-y += scan.o
+# Keep EC driver first. Initialization of others depend on it.
+acpi-y += ec.o
+acpi-$(CONFIG_ACPI_DOCK) += dock.o
+acpi-y += pci_root.o pci_link.o pci_irq.o pci_bind.o
+acpi-y += power.o
+acpi-y += system.o event.o
+acpi-$(CONFIG_ACPI_DEBUG) += debug.o
+acpi-$(CONFIG_ACPI_NUMA) += numa.o
+acpi-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o
+ifdef CONFIG_ACPI_VIDEO
+acpi-y += video_detect.o
+endif
+
+# These are (potentially) separate modules
+obj-$(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_VIDEO) += video.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-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o
+obj-$(CONFIG_ACPI_SBS) += sbshc.o
+obj-$(CONFIG_ACPI_SBS) += sbs.o
+
processor-objs += processor_core.o processor_throttling.o \
processor_idle.o processor_thermal.o
ifdef CONFIG_CPU_FREQ
processor-objs += processor_perflib.o
endif
-
-obj-y += bus.o glue.o
-obj-y += scan.o
-# Keep EC driver first. Initialization of others depend on it.
-obj-y += ec.o
-obj-$(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-$(CONFIG_ACPI_VIDEO) += video.o
-ifdef CONFIG_ACPI_VIDEO
-obj-y += video_detect.o
-endif
-
-obj-y += pci_root.o pci_link.o pci_irq.o pci_bind.o
-obj-$(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
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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