5a0e3ad6af
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
177 lines
4.6 KiB
C
177 lines
4.6 KiB
C
/*
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* arch/arm/mach-ixp4xx/gtwx5715-setup.c
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*
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* Gemtek GTWX5715 (Linksys WRV54G) board setup
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*
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* Copyright (C) 2004 George T. Joseph
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* Derived from Coyote
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/serial.h>
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#include <linux/tty.h>
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#include <linux/serial_8250.h>
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#include <asm/types.h>
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#include <asm/setup.h>
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#include <asm/memory.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch
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and operate as an SPI type interface. The details of the interface
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are available on Kendin/Micrel's web site. */
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#define GTWX5715_KSSPI_SELECT 5
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#define GTWX5715_KSSPI_TXD 6
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#define GTWX5715_KSSPI_CLOCK 7
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#define GTWX5715_KSSPI_RXD 12
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/* The "reset" button is wired to GPIO 3.
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The GPIO is brought "low" when the button is pushed. */
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#define GTWX5715_BUTTON_GPIO 3
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/* Board Label Front Label
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LED1 Power
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LED2 Wireless-G
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LED3 not populated but could be
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LED4 Internet
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LED5 - LED8 Controlled by KS8995M Switch
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LED9 DMZ */
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#define GTWX5715_LED1_GPIO 2
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#define GTWX5715_LED2_GPIO 9
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#define GTWX5715_LED3_GPIO 8
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#define GTWX5715_LED4_GPIO 1
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#define GTWX5715_LED9_GPIO 4
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/*
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* Xscale UART registers are 32 bits wide with only the least
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* significant 8 bits having any meaning. From a configuration
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* perspective, this means 2 things...
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*
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* Setting .regshift = 2 so that the standard 16550 registers
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* line up on every 4th byte.
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*
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* Shifting the register start virtual address +3 bytes when
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* compiled big-endian. Since register writes are done on a
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* single byte basis, if the shift isn't done the driver will
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* write the value into the most significant byte of the register,
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* which is ignored, instead of the least significant.
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*/
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#ifdef __ARMEB__
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#define REG_OFFSET 3
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#else
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#define REG_OFFSET 0
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#endif
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/*
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* Only the second or "console" uart is connected on the gtwx5715.
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*/
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static struct resource gtwx5715_uart_resources[] = {
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{
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.start = IXP4XX_UART2_BASE_PHYS,
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.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = IRQ_IXP4XX_UART2,
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.end = IRQ_IXP4XX_UART2,
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.flags = IORESOURCE_IRQ,
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},
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{ },
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};
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static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
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{
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.mapbase = IXP4XX_UART2_BASE_PHYS,
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.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
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.irq = IRQ_IXP4XX_UART2,
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
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.iotype = UPIO_MEM,
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.regshift = 2,
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.uartclk = IXP4XX_UART_XTAL,
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},
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{ },
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};
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static struct platform_device gtwx5715_uart_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = gtwx5715_uart_platform_data,
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},
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.num_resources = 2,
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.resource = gtwx5715_uart_resources,
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};
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static struct flash_platform_data gtwx5715_flash_data = {
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.map_name = "cfi_probe",
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.width = 2,
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};
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static struct resource gtwx5715_flash_resource = {
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device gtwx5715_flash = {
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.name = "IXP4XX-Flash",
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.id = 0,
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.dev = {
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.platform_data = >wx5715_flash_data,
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},
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.num_resources = 1,
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.resource = >wx5715_flash_resource,
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};
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static struct platform_device *gtwx5715_devices[] __initdata = {
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>wx5715_uart_device,
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>wx5715_flash,
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};
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static void __init gtwx5715_init(void)
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{
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ixp4xx_sys_init();
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gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
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gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;
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platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
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}
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MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
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/* Maintainer: George Joseph */
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.phys_io = IXP4XX_UART2_BASE_PHYS,
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.io_pg_offst = ((IXP4XX_UART2_BASE_VIRT) >> 18) & 0xfffc,
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.map_io = ixp4xx_map_io,
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.init_irq = ixp4xx_init_irq,
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.timer = &ixp4xx_timer,
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.boot_params = 0x0100,
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.init_machine = gtwx5715_init,
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MACHINE_END
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