Merge commit 'v2.6.37-rc7' into perf/core

Merge reason: Pick up the latest -rc.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

13 files changed, 64 insertions, 409 deletions

diff --git a/arch/sparc/include/asm/openprom.h b/arch/sparc/include/asm/openprom.h
index 81cd43432dc0..47eaafad15ce 100644
--- a/arch/sparc/include/asm/openprom.h
+++ b/arch/sparc/include/asm/openprom.h
@@ -39,7 +39,7 @@ struct linux_dev_v2_funcs {
 	int (*v2_dev_open)(char *devpath);
 	void (*v2_dev_close)(int d);
 	int (*v2_dev_read)(int d, char *buf, int nbytes);
-	int (*v2_dev_write)(int d, char *buf, int nbytes);
+	int (*v2_dev_write)(int d, const char *buf, int nbytes);
 	int (*v2_dev_seek)(int d, int hi, int lo);
 
 	/* Never issued (multistage load support) */
diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index 51296a6f5005..9e5c64084b86 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -60,25 +60,6 @@ extern char *prom_getbootargs(void);
 extern char *prom_mapio(char *virt_hint, int io_space, unsigned int phys_addr, unsigned int num_bytes);
 extern void prom_unmapio(char *virt_addr, unsigned int num_bytes);
 
-/* Device operations. */
-
-/* Open the device described by the passed string.  Note, that the format
- * of the string is different on V0 vs. V2->higher proms.  The caller must
- * know what he/she is doing!  Returns the device descriptor, an int.
- */
-extern int prom_devopen(char *device_string);
-
-/* Close a previously opened device described by the passed integer
- * descriptor.
- */
-extern int prom_devclose(int device_handle);
-
-/* Do a seek operation on the device described by the passed integer
- * descriptor.
- */
-extern void prom_seek(int device_handle, unsigned int seek_hival,
-		      unsigned int seek_lowval);
-
 /* Miscellaneous routines, don't really fit in any category per se. */
 
 /* Reboot the machine with the command line passed. */
@@ -121,19 +102,8 @@ extern int prom_getrev(void);
 /* Get the prom firmware revision. */
 extern int prom_getprev(void);
 
-/* Character operations to/from the console.... */
-
-/* Non-blocking get character from console. */
-extern int prom_nbgetchar(void);
-
-/* Non-blocking put character to console. */
-extern int prom_nbputchar(char character);
-
-/* Blocking get character from console. */
-extern char prom_getchar(void);
-
-/* Blocking put character to console. */
-extern void prom_putchar(char character);
+/* Write a buffer of characters to the console. */
+extern void prom_console_write_buf(const char *buf, int len);
 
 /* Prom's internal routines, don't use in kernel/boot code. */
 extern void prom_printf(const char *fmt, ...);
@@ -238,7 +208,6 @@ extern int prom_node_has_property(phandle node, char *property);
 extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
 			int value_size);
 
-extern phandle prom_pathtoinode(char *path);
 extern phandle prom_inst2pkg(int);
 
 /* Dorking with Bus ranges... */
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index c9cc078e3e31..8cd0df34e82b 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -67,27 +67,6 @@ extern void prom_init(void *cif_handler, void *cif_stack);
 /* Boot argument acquisition, returns the boot command line string. */
 extern char *prom_getbootargs(void);
 
-/* Device utilities. */
-
-/* Device operations. */
-
-/* Open the device described by the passed string.  Note, that the format
- * of the string is different on V0 vs. V2->higher proms.  The caller must
- * know what he/she is doing!  Returns the device descriptor, an int.
- */
-extern int prom_devopen(const char *device_string);
-
-/* Close a previously opened device described by the passed integer
- * descriptor.
- */
-extern int prom_devclose(int device_handle);
-
-/* Do a seek operation on the device described by the passed integer
- * descriptor.
- */
-extern void prom_seek(int device_handle, unsigned int seek_hival,
-		      unsigned int seek_lowval);
-
 /* Miscellaneous routines, don't really fit in any category per se. */
 
 /* Reboot the machine with the command line passed. */
@@ -109,33 +88,14 @@ extern void prom_halt(void) __attribute__ ((noreturn));
 /* Halt and power-off the machine. */
 extern void prom_halt_power_off(void) __attribute__ ((noreturn));
 
-/* Set the PROM 'sync' callback function to the passed function pointer.
- * When the user gives the 'sync' command at the prom prompt while the
- * kernel is still active, the prom will call this routine.
- *
- */
-typedef int (*callback_func_t)(long *cmd);
-extern void prom_setcallback(callback_func_t func_ptr);
-
 /* Acquire the IDPROM of the root node in the prom device tree.  This
  * gets passed a buffer where you would like it stuffed.  The return value
  * is the format type of this idprom or 0xff on error.
  */
 extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
 
-/* Character operations to/from the console.... */
-
-/* Non-blocking get character from console. */
-extern int prom_nbgetchar(void);
-
-/* Non-blocking put character to console. */
-extern int prom_nbputchar(char character);
-
-/* Blocking get character from console. */
-extern char prom_getchar(void);
-
-/* Blocking put character to console. */
-extern void prom_putchar(char character);
+/* Write a buffer of characters to the console. */
+extern void prom_console_write_buf(const char *buf, int len);
 
 /* Prom's internal routines, don't use in kernel/boot code. */
 extern void prom_printf(const char *fmt, ...);
@@ -279,9 +239,7 @@ extern phandle prom_finddevice(const char *name);
 extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
 			int value_size);
 
-extern phandle prom_pathtoinode(const char *path);
 extern phandle prom_inst2pkg(int);
-extern int prom_service_exists(const char *service_name);
 extern void prom_sun4v_guest_soft_state(void);
 
 extern int prom_ihandle2path(int handle, char *buffer, int bufsize);
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index 2d51527d810f..f01c42661ee5 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -114,7 +114,7 @@ void __init leon_init_timers(irq_handler_t counter_fn)
 	if (leon3_gptimer_regs && leon3_irqctrl_regs) {
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].val, 0);
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].rld,
-				      (((1000000 / 100) - 1)));
+				      (((1000000 / HZ) - 1)));
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0);
 
 #ifdef CONFIG_SMP
@@ -128,7 +128,7 @@ void __init leon_init_timers(irq_handler_t counter_fn)
 		}
 
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].val, 0);
-		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/100) - 1)));
+		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/HZ) - 1)));
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, 0);
 # endif
 
diff --git a/arch/sparc/prom/Makefile b/arch/sparc/prom/Makefile
index 1b8c073adb44..816c0fa12dc0 100644
--- a/arch/sparc/prom/Makefile
+++ b/arch/sparc/prom/Makefile
@@ -6,7 +6,6 @@ ccflags := -Werror
 
 lib-y                 := bootstr_$(BITS).o
 lib-$(CONFIG_SPARC32) += devmap.o
-lib-y                 += devops_$(BITS).o
 lib-y                 += init_$(BITS).o
 lib-$(CONFIG_SPARC32) += memory.o
 lib-y                 += misc_$(BITS).o
diff --git a/arch/sparc/prom/console_32.c b/arch/sparc/prom/console_32.c
index 5340264b78f5..48863108a44c 100644
--- a/arch/sparc/prom/console_32.c
+++ b/arch/sparc/prom/console_32.c
@@ -16,63 +16,26 @@
 
 extern void restore_current(void);
 
-/* Non blocking get character from console input device, returns -1
- * if no input was taken.  This can be used for polling.
- */
-int
-prom_nbgetchar(void)
-{
-	static char inc;
-	int i = -1;
-	unsigned long flags;
-
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		i = (*(romvec->pv_nbgetchar))();
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		if( (*(romvec->pv_v2devops).v2_dev_read)(*romvec->pv_v2bootargs.fd_stdin , &inc, 0x1) == 1) {
-			i = inc;
-		} else {
-			i = -1;
-		}
-		break;
-	default:
-		i = -1;
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-	return i; /* Ugh, we could spin forever on unsupported proms ;( */
-}
-
 /* Non blocking put character to console device, returns -1 if
  * unsuccessful.
  */
-int
-prom_nbputchar(char c)
+static int prom_nbputchar(const char *buf)
 {
-	static char outc;
 	unsigned long flags;
 	int i = -1;
 
 	spin_lock_irqsave(&prom_lock, flags);
 	switch(prom_vers) {
 	case PROM_V0:
-		i = (*(romvec->pv_nbputchar))(c);
+		i = (*(romvec->pv_nbputchar))(*buf);
 		break;
 	case PROM_V2:
 	case PROM_V3:
-		outc = c;
-		if( (*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout, &outc, 0x1) == 1)
+		if ((*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout,
+							  buf, 0x1) == 1)
 			i = 0;
-		else
-			i = -1;
 		break;
 	default:
-		i = -1;
 		break;
 	};
 	restore_current();
@@ -80,18 +43,14 @@ prom_nbputchar(char c)
 	return i; /* Ugh, we could spin forever on unsupported proms ;( */
 }
 
-/* Blocking version of get character routine above. */
-char
-prom_getchar(void)
+void prom_console_write_buf(const char *buf, int len)
 {
-	int character;
-	while((character = prom_nbgetchar()) == -1) ;
-	return (char) character;
+	while (len) {
+		int n = prom_nbputchar(buf);
+		if (n)
+			continue;
+		len--;
+		buf++;
+	}
 }
 
-/* Blocking version of put character routine above. */
-void
-prom_putchar(char c)
-{
-	while(prom_nbputchar(c) == -1) ;
-}
diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c
index 10322dc2f557..ed39e75828bd 100644
--- a/arch/sparc/prom/console_64.c
+++ b/arch/sparc/prom/console_64.c
@@ -15,85 +15,34 @@
 
 extern int prom_stdin, prom_stdout;
 
-/* Non blocking get character from console input device, returns -1
- * if no input was taken.  This can be used for polling.
- */
-inline int
-prom_nbgetchar(void)
-{
-	unsigned long args[7];
-	char inc;
-
-	args[0] = (unsigned long) "read";
-	args[1] = 3;
-	args[2] = 1;
-	args[3] = (unsigned int) prom_stdin;
-	args[4] = (unsigned long) &inc;
-	args[5] = 1;
-	args[6] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
-
-	if (args[6] == 1)
-		return inc;
-	return -1;
-}
-
-/* Non blocking put character to console device, returns -1 if
- * unsuccessful.
- */
-inline int
-prom_nbputchar(char c)
+static int __prom_console_write_buf(const char *buf, int len)
 {
 	unsigned long args[7];
-	char outc;
-	
-	outc = c;
+	int ret;
 
 	args[0] = (unsigned long) "write";
 	args[1] = 3;
 	args[2] = 1;
 	args[3] = (unsigned int) prom_stdout;
-	args[4] = (unsigned long) &outc;
-	args[5] = 1;
+	args[4] = (unsigned long) buf;
+	args[5] = (unsigned int) len;
 	args[6] = (unsigned long) -1;
 
 	p1275_cmd_direct(args);
 
-	if (args[6] == 1)
-		return 0;
-	else
+	ret = (int) args[6];
+	if (ret < 0)
 		return -1;
+	return ret;
 }
 
-/* Blocking version of get character routine above. */
-char
-prom_getchar(void)
-{
-	int character;
-	while((character = prom_nbgetchar()) == -1) ;
-	return (char) character;
-}
-
-/* Blocking version of put character routine above. */
-void
-prom_putchar(char c)
+void prom_console_write_buf(const char *buf, int len)
 {
-	prom_nbputchar(c);
-}
-
-void
-prom_puts(const char *s, int len)
-{
-	unsigned long args[7];
-
-	args[0] = (unsigned long) "write";
-	args[1] = 3;
-	args[2] = 1;
-	args[3] = (unsigned int) prom_stdout;
-	args[4] = (unsigned long) s;
-	args[5] = len;
-	args[6] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
+	while (len) {
+		int n = __prom_console_write_buf(buf, len);
+		if (n < 0)
+			continue;
+		len -= n;
+		buf += len;
+	}
 }
diff --git a/arch/sparc/prom/devops_32.c b/arch/sparc/prom/devops_32.c
deleted file mode 100644
index 9c5d4687242a..000000000000
--- a/arch/sparc/prom/devops_32.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * devops.c:  Device operations using the PROM.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-
-extern void restore_current(void);
-
-/* Open the device described by the string 'dstr'.  Returns the handle
- * to that device used for subsequent operations on that device.
- * Returns -1 on failure.
- */
-int
-prom_devopen(char *dstr)
-{
-	int handle;
-	unsigned long flags;
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		handle = (*(romvec->pv_v0devops.v0_devopen))(dstr);
-		if(handle == 0) handle = -1;
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr);
-		break;
-	default:
-		handle = -1;
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-
-	return handle;
-}
-
-/* Close the device described by device handle 'dhandle'. */
-int
-prom_devclose(int dhandle)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		(*(romvec->pv_v0devops.v0_devclose))(dhandle);
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		(*(romvec->pv_v2devops.v2_dev_close))(dhandle);
-		break;
-	default:
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-	return 0;
-}
-
-/* Seek to specified location described by 'seekhi' and 'seeklo'
- * for device 'dhandle'.
- */
-void
-prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		(*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo);
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		(*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo);
-		break;
-	default:
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-}
diff --git a/arch/sparc/prom/devops_64.c b/arch/sparc/prom/devops_64.c
deleted file mode 100644
index a017119e7ef1..000000000000
--- a/arch/sparc/prom/devops_64.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * devops.c:  Device operations using the PROM.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-
-/* Open the device described by the string 'dstr'.  Returns the handle
- * to that device used for subsequent operations on that device.
- * Returns 0 on failure.
- */
-int
-prom_devopen(const char *dstr)
-{
-	unsigned long args[5];
-
-	args[0] = (unsigned long) "open";
-	args[1] = 1;
-	args[2] = 1;
-	args[3] = (unsigned long) dstr;
-	args[4] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
-
-	return (int) args[4];
-}
-
-/* Close the device described by device handle 'dhandle'. */
-int
-prom_devclose(int dhandle)
-{
-	unsigned long args[4];
-
-	args[0] = (unsigned long) "close";
-	args[1] = 1;
-	args[2] = 0;
-	args[3] = (unsigned int) dhandle;
-
-	p1275_cmd_direct(args);
-
-	return 0;
-}
-
-/* Seek to specified location described by 'seekhi' and 'seeklo'
- * for device 'dhandle'.
- */
-void
-prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
-{
-	unsigned long args[7];
-
-	args[0] = (unsigned long) "seek";
-	args[1] = 3;
-	args[2] = 1;
-	args[3] = (unsigned int) dhandle;
-	args[4] = seekhi;
-	args[5] = seeklo;
-	args[6] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
-}
diff --git a/arch/sparc/prom/misc_64.c b/arch/sparc/prom/misc_64.c
index d24bc44e361e..e4f31d4d3715 100644
--- a/arch/sparc/prom/misc_64.c
+++ b/arch/sparc/prom/misc_64.c
@@ -18,7 +18,7 @@
 #include <asm/system.h>
 #include <asm/ldc.h>
 
-int prom_service_exists(const char *service_name)
+static int prom_service_exists(const char *service_name)
 {
 	unsigned long args[5];
 
@@ -150,20 +150,6 @@ void prom_halt_power_off(void)
 	prom_halt();
 }
 
-/* Set prom sync handler to call function 'funcp'. */
-void prom_setcallback(callback_func_t funcp)
-{
-	unsigned long args[5];
-	if (!funcp)
-		return;
-	args[0] = (unsigned long) "set-callback";
-	args[1] = 1;
-	args[2] = 1;
-	args[3] = (unsigned long) funcp;
-	args[4] = (unsigned long) -1;
-	p1275_cmd_direct(args);
-}
-
 /* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
  * format type.  'num_bytes' is the number of bytes that your idbuf
  * has space for.  Returns 0xff on error.
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
index ca869266b9f3..d9682f06b3b0 100644
--- a/arch/sparc/prom/printf.c
+++ b/arch/sparc/prom/printf.c
@@ -15,22 +15,45 @@
 
 #include <linux/kernel.h>
 #include <linux/compiler.h>
+#include <linux/spinlock.h>
 
 #include <asm/openprom.h>
 #include <asm/oplib.h>
 
+#define CONSOLE_WRITE_BUF_SIZE	1024
+
 static char ppbuf[1024];
+static char console_write_buf[CONSOLE_WRITE_BUF_SIZE];
+static DEFINE_RAW_SPINLOCK(console_write_lock);
 
 void notrace prom_write(const char *buf, unsigned int n)
 {
-	char ch;
+	unsigned int dest_len;
+	unsigned long flags;
+	char *dest;
+
+	dest = console_write_buf;
+	raw_spin_lock_irqsave(&console_write_lock, flags);
 
-	while (n != 0) {
-		--n;
-		if ((ch = *buf++) == '\n')
-			prom_putchar('\r');
-		prom_putchar(ch);
+	dest_len = 0;
+	while (n-- != 0) {
+		char ch = *buf++;
+		if (ch == '\n') {
+			*dest++ = '\r';
+			dest_len++;
+		}
+		*dest++ = ch;
+		dest_len++;
+		if (dest_len >= CONSOLE_WRITE_BUF_SIZE - 1) {
+			prom_console_write_buf(console_write_buf, dest_len);
+			dest = console_write_buf;
+			dest_len = 0;
+		}
 	}
+	if (dest_len)
+		prom_console_write_buf(console_write_buf, dest_len);
+
+	raw_spin_unlock_irqrestore(&console_write_lock, flags);
 }
 
 void notrace prom_printf(const char *fmt, ...)
diff --git a/arch/sparc/prom/tree_32.c b/arch/sparc/prom/tree_32.c
index 63e08e149774..535e2e69ac1d 100644
--- a/arch/sparc/prom/tree_32.c
+++ b/arch/sparc/prom/tree_32.c
@@ -342,19 +342,3 @@ phandle prom_inst2pkg(int inst)
 	if (node == -1) return 0;
 	return node;
 }
-
-/* Return 'node' assigned to a particular prom 'path'
- * FIXME: Should work for v0 as well
- */
-phandle prom_pathtoinode(char *path)
-{
-	phandle node;
-	int inst;
-	
-	inst = prom_devopen (path);
-	if (inst == -1) return 0;
-	node = prom_inst2pkg (inst);
-	prom_devclose (inst);
-	if (node == -1) return 0;
-	return node;
-}
diff --git a/arch/sparc/prom/tree_64.c b/arch/sparc/prom/tree_64.c
index 691be68932f8..d93660048376 100644
--- a/arch/sparc/prom/tree_64.c
+++ b/arch/sparc/prom/tree_64.c
@@ -374,24 +374,6 @@ inline phandle prom_inst2pkg(int inst)
 	return node;
 }
 
-/* Return 'node' assigned to a particular prom 'path'
- * FIXME: Should work for v0 as well
- */
-phandle prom_pathtoinode(const char *path)
-{
-	phandle node;
-	int inst;
-
-	inst = prom_devopen (path);
-	if (inst == 0)
-		return 0;
-	node = prom_inst2pkg(inst);
-	prom_devclose(inst);
-	if (node == -1)
-		return 0;
-	return node;
-}
-
 int prom_ihandle2path(int handle, char *buffer, int bufsize)
 {
 	unsigned long args[7];