---

yaml --- r: 109727 b: refs/heads/master c: 4a911b1 h: refs/heads/master i: 109725: ff1caf6 109723: 3f6a324 109719: daf533a 109711: 2302da0 109695: 3ae3622 v: v3
git-mirror · Sep 8, 2008 · e8184dd · e8184dd
1 parent df5a066
commit e8184dd
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Showing 61 changed files with 432 additions and 841 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b975dee3811ae0c58bd0e19cbd041cac8dd37ec5
+refs/heads/master: 4a911b1efe219fa3c8af697be0054c72e13bdae4
diff --git a/trunk/Documentation/filesystems/Locking b/trunk/Documentation/filesystems/Locking
@@ -144,8 +144,8 @@ prototypes:
 	void (*kill_sb) (struct super_block *);
 locking rules:
 		may block	BKL
-get_sb		yes		no
-kill_sb		yes		no
+get_sb		yes		yes
+kill_sb		yes		yes
 
 ->get_sb() returns error or 0 with locked superblock attached to the vfsmount
 (exclusive on ->s_umount).
@@ -409,12 +409,12 @@ ioctl:			yes	(see below)
 unlocked_ioctl:		no	(see below)
 compat_ioctl:		no
 mmap:			no
-open:			no
+open:			maybe	(see below)
 flush:			no
 release:		no
 fsync:			no	(see below)
 aio_fsync:		no
-fasync:			no
+fasync:			yes	(see below)
 lock:			yes
 readv:			no
 writev:			no
@@ -431,6 +431,13 @@ For many filesystems, it is probably safe to acquire the inode
 semaphore.  Note some filesystems (i.e. remote ones) provide no
 protection for i_size so you will need to use the BKL.
 
+->open() locking is in-transit: big lock partially moved into the methods.
+The only exception is ->open() in the instances of file_operations that never
+end up in ->i_fop/->proc_fops, i.e. ones that belong to character devices
+(chrdev_open() takes lock before replacing ->f_op and calling the secondary
+method. As soon as we fix the handling of module reference counters all
+instances of ->open() will be called without the BKL.
+
 Note: ext2_release() was *the* source of contention on fs-intensive
 loads and dropping BKL on ->release() helps to get rid of that (we still
 grab BKL for cases when we close a file that had been opened r/w, but that

diff --git a/trunk/MAINTAINERS b/trunk/MAINTAINERS
@@ -750,13 +750,11 @@ P:	Ville Syrjala
 M:	syrjala@sci.fi
 S:	Maintained
 
-ATLX ETHERNET DRIVERS
+ATL1 ETHERNET DRIVER
 P:	Jay Cliburn
 M:	jcliburn@gmail.com
 P:	Chris Snook
 M:	csnook@redhat.com
-P:	Jie Yang
-M:	jie.yang@atheros.com
 L:	atl1-devel@lists.sourceforge.net
 W:	http://sourceforge.net/projects/atl1
 W:	http://atl1.sourceforge.net
@@ -1595,7 +1593,7 @@ S:	Supported
 EMBEDDED LINUX
 P:	Paul Gortmaker
 M:	paul.gortmaker@windriver.com
-P:	David Woodhouse
+P	David Woodhouse
 M:	dwmw2@infradead.org
 L:	linux-embedded@vger.kernel.org
 S:	Maintained

diff --git a/trunk/arch/arm/include/asm/io.h b/trunk/arch/arm/include/asm/io.h
@@ -61,9 +61,8 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
 #define MT_DEVICE_NONSHARED	1
 #define MT_DEVICE_CACHED	2
 #define MT_DEVICE_IXP2000	3
-#define MT_DEVICE_WC		4
 /*
- * types 5 onwards can be found in asm/mach/map.h and are undefined
+ * types 4 onwards can be found in asm/mach/map.h and are undefined
  * for ioremap
  */
 
@@ -216,13 +215,11 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
 #define ioremap(cookie,size)		__arm_ioremap(cookie, size, MT_DEVICE)
 #define ioremap_nocache(cookie,size)	__arm_ioremap(cookie, size, MT_DEVICE)
 #define ioremap_cached(cookie,size)	__arm_ioremap(cookie, size, MT_DEVICE_CACHED)
-#define ioremap_wc(cookie,size)		__arm_ioremap(cookie, size, MT_DEVICE_WC)
 #define iounmap(cookie)			__iounmap(cookie)
 #else
 #define ioremap(cookie,size)		__arch_ioremap((cookie), (size), MT_DEVICE)
 #define ioremap_nocache(cookie,size)	__arch_ioremap((cookie), (size), MT_DEVICE)
 #define ioremap_cached(cookie,size)	__arch_ioremap((cookie), (size), MT_DEVICE_CACHED)
-#define ioremap_wc(cookie,size)		__arch_ioremap((cookie), (size), MT_DEVICE_WC)
 #define iounmap(cookie)			__arch_iounmap(cookie)
 #endif
 

diff --git a/trunk/arch/arm/include/asm/mach/map.h b/trunk/arch/arm/include/asm/mach/map.h
@@ -18,13 +18,13 @@ struct map_desc {
 	unsigned int type;
 };
 
-/* types 0-4 are defined in asm/io.h */
-#define MT_CACHECLEAN		5
-#define MT_MINICLEAN		6
-#define MT_LOW_VECTORS		7
-#define MT_HIGH_VECTORS		8
-#define MT_MEMORY		9
-#define MT_ROM			10
+/* types 0-3 are defined in asm/io.h */
+#define MT_CACHECLEAN		4
+#define MT_MINICLEAN		5
+#define MT_LOW_VECTORS		6
+#define MT_HIGH_VECTORS		7
+#define MT_MEMORY		8
+#define MT_ROM			9
 
 #define MT_NONSHARED_DEVICE	MT_DEVICE_NONSHARED
 #define MT_IXP2000_DEVICE	MT_DEVICE_IXP2000

diff --git a/trunk/arch/arm/mach-omap1/mcbsp.c b/trunk/arch/arm/mach-omap1/mcbsp.c
@@ -159,7 +159,6 @@ static struct omap_mcbsp_ops omap1_mcbsp_ops = {
 #ifdef CONFIG_ARCH_OMAP730
 static struct omap_mcbsp_platform_data omap730_mcbsp_pdata[] = {
 	{
-		.phys_base	= OMAP730_MCBSP1_BASE,
 		.virt_base	= io_p2v(OMAP730_MCBSP1_BASE),
 		.dma_rx_sync	= OMAP_DMA_MCBSP1_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP1_TX,
@@ -168,7 +167,6 @@ static struct omap_mcbsp_platform_data omap730_mcbsp_pdata[] = {
 		.ops		= &omap1_mcbsp_ops,
 	},
 	{
-		.phys_base	= OMAP730_MCBSP2_BASE,
 		.virt_base	= io_p2v(OMAP730_MCBSP2_BASE),
 		.dma_rx_sync	= OMAP_DMA_MCBSP3_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP3_TX,
@@ -186,7 +184,6 @@ static struct omap_mcbsp_platform_data omap730_mcbsp_pdata[] = {
 #ifdef CONFIG_ARCH_OMAP15XX
 static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
 	{
-		.phys_base	= OMAP1510_MCBSP1_BASE,
 		.virt_base	= OMAP1510_MCBSP1_BASE,
 		.dma_rx_sync	= OMAP_DMA_MCBSP1_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP1_TX,
@@ -196,7 +193,6 @@ static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
 		.clk_name	= "mcbsp_clk",
 		},
 	{
-		.phys_base	= OMAP1510_MCBSP2_BASE,
 		.virt_base	= io_p2v(OMAP1510_MCBSP2_BASE),
 		.dma_rx_sync	= OMAP_DMA_MCBSP2_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP2_TX,
@@ -205,7 +201,6 @@ static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
 		.ops		= &omap1_mcbsp_ops,
 	},
 	{
-		.phys_base	= OMAP1510_MCBSP3_BASE,
 		.virt_base	= OMAP1510_MCBSP3_BASE,
 		.dma_rx_sync	= OMAP_DMA_MCBSP3_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP3_TX,
@@ -224,7 +219,6 @@ static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
 #ifdef CONFIG_ARCH_OMAP16XX
 static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
 	{
-		.phys_base	= OMAP1610_MCBSP1_BASE,
 		.virt_base	= OMAP1610_MCBSP1_BASE,
 		.dma_rx_sync	= OMAP_DMA_MCBSP1_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP1_TX,
@@ -234,7 +228,6 @@ static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
 		.clk_name	= "mcbsp_clk",
 	},
 	{
-		.phys_base	= OMAP1610_MCBSP2_BASE,
 		.virt_base	= io_p2v(OMAP1610_MCBSP2_BASE),
 		.dma_rx_sync	= OMAP_DMA_MCBSP2_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP2_TX,
@@ -243,7 +236,6 @@ static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
 		.ops		= &omap1_mcbsp_ops,
 	},
 	{
-		.phys_base	= OMAP1610_MCBSP3_BASE,
 		.virt_base	= OMAP1610_MCBSP3_BASE,
 		.dma_rx_sync	= OMAP_DMA_MCBSP3_RX,
 		.dma_tx_sync	= OMAP_DMA_MCBSP3_TX,

diff --git a/trunk/arch/arm/mach-omap2/mcbsp.c b/trunk/arch/arm/mach-omap2/mcbsp.c
@@ -134,7 +134,6 @@ static struct omap_mcbsp_ops omap2_mcbsp_ops = {
 #ifdef CONFIG_ARCH_OMAP24XX
 static struct omap_mcbsp_platform_data omap24xx_mcbsp_pdata[] = {
 	{
-		.phys_base	= OMAP24XX_MCBSP1_BASE,
 		.virt_base	= IO_ADDRESS(OMAP24XX_MCBSP1_BASE),
 		.dma_rx_sync	= OMAP24XX_DMA_MCBSP1_RX,
 		.dma_tx_sync	= OMAP24XX_DMA_MCBSP1_TX,
@@ -144,7 +143,6 @@ static struct omap_mcbsp_platform_data omap24xx_mcbsp_pdata[] = {
 		.clk_name	= "mcbsp_clk",
 	},
 	{
-		.phys_base	= OMAP24XX_MCBSP2_BASE,
 		.virt_base	= IO_ADDRESS(OMAP24XX_MCBSP2_BASE),
 		.dma_rx_sync	= OMAP24XX_DMA_MCBSP2_RX,
 		.dma_tx_sync	= OMAP24XX_DMA_MCBSP2_TX,
@@ -163,7 +161,6 @@ static struct omap_mcbsp_platform_data omap24xx_mcbsp_pdata[] = {
 #ifdef CONFIG_ARCH_OMAP34XX
 static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
 	{
-		.phys_base	= OMAP34XX_MCBSP1_BASE,
 		.virt_base	= IO_ADDRESS(OMAP34XX_MCBSP1_BASE),
 		.dma_rx_sync	= OMAP24XX_DMA_MCBSP1_RX,
 		.dma_tx_sync	= OMAP24XX_DMA_MCBSP1_TX,
@@ -173,7 +170,6 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
 		.clk_name	= "mcbsp_clk",
 	},
 	{
-		.phys_base	= OMAP34XX_MCBSP2_BASE,
 		.virt_base	= IO_ADDRESS(OMAP34XX_MCBSP2_BASE),
 		.dma_rx_sync	= OMAP24XX_DMA_MCBSP2_RX,
 		.dma_tx_sync	= OMAP24XX_DMA_MCBSP2_TX,

diff --git a/trunk/arch/arm/mm/mmu.c b/trunk/arch/arm/mm/mmu.c
@@ -211,12 +211,6 @@ static struct mem_type mem_types[] = {
 				  PMD_SECT_TEX(1),
 		.domain		= DOMAIN_IO,
 	},
-	[MT_DEVICE_WC] = {	/* ioremap_wc */
-		.prot_pte	= PROT_PTE_DEVICE,
-		.prot_l1	= PMD_TYPE_TABLE,
-		.prot_sect	= PROT_SECT_DEVICE,
-		.domain		= DOMAIN_IO,
-	},
 	[MT_CACHECLEAN] = {
 		.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
 		.domain    = DOMAIN_KERNEL,
@@ -278,20 +272,6 @@ static void __init build_mem_type_table(void)
 		ecc_mask = 0;
 	}
 
-	/*
-	 * On non-Xscale3 ARMv5-and-older systems, use CB=01
-	 * (Uncached/Buffered) for ioremap_wc() mappings.  On XScale3
-	 * and ARMv6+, use TEXCB=00100 mappings (Inner/Outer Uncacheable
-	 * in xsc3 parlance, Uncached Normal in ARMv6 parlance).
-	 */
-	if (cpu_is_xsc3() || cpu_arch >= CPU_ARCH_ARMv6) {
-		mem_types[MT_DEVICE_WC].prot_pte_ext |= PTE_EXT_TEX(1);
-		mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_TEX(1);
-	} else {
-		mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_BUFFERABLE;
-		mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_BUFFERABLE;
-	}
-
 	/*
 	 * ARMv5 and lower, bit 4 must be set for page tables.
 	 * (was: cache "update-able on write" bit on ARM610)

diff --git a/trunk/arch/arm/plat-mxc/clock.c b/trunk/arch/arm/plat-mxc/clock.c
@@ -37,6 +37,7 @@
 #include <linux/proc_fs.h>
 #include <linux/semaphore.h>
 #include <linux/string.h>
+#include <linux/version.h>
 
 #include <mach/clock.h>
 

diff --git a/trunk/arch/arm/plat-omap/gpio.c b/trunk/arch/arm/plat-omap/gpio.c
@@ -1488,7 +1488,7 @@ static int __init _omap_gpio_init(void)
 		bank->chip.set = gpio_set;
 		if (bank_is_mpuio(bank)) {
 			bank->chip.label = "mpuio";
-#ifdef CONFIG_ARCH_OMAP16XX
+#ifdef CONFIG_ARCH_OMAP1
 			bank->chip.dev = &omap_mpuio_device.dev;
 #endif
 			bank->chip.base = OMAP_MPUIO(0);

diff --git a/trunk/arch/arm/plat-omap/include/mach/mcbsp.h b/trunk/arch/arm/plat-omap/include/mach/mcbsp.h
@@ -315,7 +315,6 @@ struct omap_mcbsp_ops {
 };
 
 struct omap_mcbsp_platform_data {
-	unsigned long phys_base;
 	u32 virt_base;
 	u8 dma_rx_sync, dma_tx_sync;
 	u16 rx_irq, tx_irq;
@@ -325,7 +324,6 @@ struct omap_mcbsp_platform_data {
 
 struct omap_mcbsp {
 	struct device *dev;
-	unsigned long phys_base;
 	u32 io_base;
 	u8 id;
 	u8 free;

diff --git a/trunk/arch/arm/plat-omap/mcbsp.c b/trunk/arch/arm/plat-omap/mcbsp.c
@@ -651,7 +651,7 @@ int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer,
 	omap_set_dma_dest_params(mcbsp[id].dma_tx_lch,
 				 src_port,
 				 OMAP_DMA_AMODE_CONSTANT,
-				 mcbsp[id].phys_base + OMAP_MCBSP_REG_DXR1,
+				 mcbsp[id].io_base + OMAP_MCBSP_REG_DXR1,
 				 0, 0);
 
 	omap_set_dma_src_params(mcbsp[id].dma_tx_lch,
@@ -712,7 +712,7 @@ int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer,
 	omap_set_dma_src_params(mcbsp[id].dma_rx_lch,
 				src_port,
 				OMAP_DMA_AMODE_CONSTANT,
-				mcbsp[id].phys_base + OMAP_MCBSP_REG_DRR1,
+				mcbsp[id].io_base + OMAP_MCBSP_REG_DRR1,
 				0, 0);
 
 	omap_set_dma_dest_params(mcbsp[id].dma_rx_lch,
@@ -830,7 +830,6 @@ static int __init omap_mcbsp_probe(struct platform_device *pdev)
 	mcbsp[id].dma_tx_lch = -1;
 	mcbsp[id].dma_rx_lch = -1;
 
-	mcbsp[id].phys_base = pdata->phys_base;
 	mcbsp[id].io_base = pdata->virt_base;
 	/* Default I/O is IRQ based */
 	mcbsp[id].io_type = OMAP_MCBSP_IRQ_IO;

diff --git a/trunk/arch/avr32/kernel/asm-offsets.c b/trunk/arch/avr32/kernel/asm-offsets.c
@@ -4,8 +4,6 @@
  * to extract and format the required data.
  */
 
-#include <linux/mm.h>
-#include <linux/sched.h>
 #include <linux/thread_info.h>
 #include <linux/kbuild.h>
 
@@ -19,8 +17,4 @@ void foo(void)
 	OFFSET(TI_rar_saved, thread_info, rar_saved);
 	OFFSET(TI_rsr_saved, thread_info, rsr_saved);
 	OFFSET(TI_restart_block, thread_info, restart_block);
-	BLANK();
-	OFFSET(TSK_active_mm, task_struct, active_mm);
-	BLANK();
-	OFFSET(MM_pgd, mm_struct, pgd);
 }
diff --git a/trunk/arch/avr32/kernel/entry-avr32b.S b/trunk/arch/avr32/kernel/entry-avr32b.S
@@ -334,64 +334,9 @@ save_full_context_ex:
 
 	/* Low-level exception handlers */
 handle_critical:
-	/*
-	 * AT32AP700x errata:
-	 *
-	 * After a Java stack overflow or underflow trap, any CPU
-	 * memory access may cause erratic behavior. This will happen
-	 * when the four least significant bits of the JOSP system
-	 * register contains any value between 9 and 15 (inclusive).
-	 *
-	 * Possible workarounds:
-	 *   - Don't use the Java Extension Module
-	 *   - Ensure that the stack overflow and underflow trap
-	 *     handlers do not do any memory access or trigger any
-	 *     exceptions before the overflow/underflow condition is
-	 *     cleared (by incrementing or decrementing the JOSP)
-	 *   - Make sure that JOSP does not contain any problematic
-	 *     value before doing any exception or interrupt
-	 *     processing.
-	 *   - Set up a critical exception handler which writes a
-	 *     known-to-be-safe value, e.g. 4, to JOSP before doing
-	 *     any further processing.
-	 *
-	 * We'll use the last workaround for now since we cannot
-	 * guarantee that user space processes don't use Java mode.
-	 * Non-well-behaving userland will be terminated with extreme
-	 * prejudice.
-	 */
-#ifdef CONFIG_CPU_AT32AP700X
-	/*
-	 * There's a chance we can't touch memory, so temporarily
-	 * borrow PTBR to save the stack pointer while we fix things
-	 * up...
-	 */
-	mtsr	SYSREG_PTBR, sp
-	mov	sp, 4
-	mtsr	SYSREG_JOSP, sp
-	mfsr	sp, SYSREG_PTBR
-	sub	pc, -2
-
-	/* Push most of pt_regs on stack. We'll do the rest later */
 	sub	sp, 4
-	pushm	r0-r12
-
-	/* PTBR mirrors current_thread_info()->task->active_mm->pgd */
-	get_thread_info r0
-	ld.w	r1, r0[TI_task]
-	ld.w	r2, r1[TSK_active_mm]
-	ld.w	r3, r2[MM_pgd]
-	mtsr	SYSREG_PTBR, r3
-#else
-	sub	sp, 4
-	pushm	r0-r12
-#endif
-	sub	r0, sp, -(14 * 4)
-	mov	r1, lr
-	mfsr	r2, SYSREG_RAR_EX
-	mfsr	r3, SYSREG_RSR_EX
-	pushm	r0-r3
-
+	stmts	--sp, r0-lr
+	rcall	save_full_context_ex
 	mfsr	r12, SYSREG_ECR
 	mov	r11, sp
 	rcall	do_critical_exception

diff --git a/trunk/arch/avr32/mach-at32ap/pm-at32ap700x.S b/trunk/arch/avr32/mach-at32ap/pm-at32ap700x.S
@@ -134,7 +134,7 @@ pm_standby:
 	mov	r11, SDRAMC_LPR_LPCB_SELF_RFR
 	bfins	r10, r11, 0, 2		/* LPCB <- self Refresh */
 	sync	0			/* flush write buffer */
-	st.w	r12[SDRAMC_LPR], r10	/* put SDRAM in self-refresh mode */
+	st.w	r12[SDRAMC_LPR], r11	/* put SDRAM in self-refresh mode */
 	ld.w	r11, r12[SDRAMC_LPR]
 	unmask_interrupts
 	sleep	CPU_SLEEP_FROZEN