Merge commit 'origin/master' into next

Manual merge of:
	arch/powerpc/include/asm/elf.h
	drivers/i2c/busses/i2c-mpc.c

lib/Kconfig

@@ -97,6 +97,20 @@ config LZO_COMPRESS
 config LZO_DECOMPRESS
 	tristate
 
+#
+# These all provide a common interface (hence the apparent duplication with
+# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
+#
+config DECOMPRESS_GZIP
+	select ZLIB_INFLATE
+	tristate
+
+config DECOMPRESS_BZIP2
+	tristate
+
+config DECOMPRESS_LZMA
+	tristate
+
 #
 # Generic allocator support is selected if needed
 #
@@ -136,12 +150,6 @@ config TEXTSEARCH_BM
 config TEXTSEARCH_FSM
 	tristate
 
-#
-# plist support is select#ed if needed
-#
-config PLIST
-	boolean
-
 config HAS_IOMEM
 	boolean
 	depends on !NO_IOMEM
@@ -174,4 +182,10 @@ config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
        bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
        depends on EXPERIMENTAL && BROKEN
 
+#
+# Netlink attribute parsing support is select'ed if needed
+#
+config NLATTR
+	bool
+
 endmenu

lib/Kconfig.debug

@@ -402,7 +402,7 @@ config LOCKDEP
 	bool
 	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
 	select STACKTRACE
-	select FRAME_POINTER if !X86 && !MIPS && !PPC
+	select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND
 	select KALLSYMS
 	select KALLSYMS_ALL
 
@@ -847,60 +847,70 @@ config BUILD_DOCSRC
 
 	  Say N if you are unsure.
 
-config DYNAMIC_PRINTK_DEBUG
-	bool "Enable dynamic printk() call support"
+config DYNAMIC_DEBUG
+	bool "Enable dynamic printk() support"
 	default n
 	depends on PRINTK
+	depends on DEBUG_FS
 	select PRINTK_DEBUG
 	help
 
 	  Compiles debug level messages into the kernel, which would not
 	  otherwise be available at runtime. These messages can then be
-	  enabled/disabled on a per module basis. This mechanism implicitly
-	  enables all pr_debug() and dev_dbg() calls. The impact of this
-	  compile option is a larger kernel text size of about 2%.
+	  enabled/disabled based on various levels of scope - per source file,
+	  function, module, format string, and line number. This mechanism
+	  implicitly enables all pr_debug() and dev_dbg() calls. The impact of
+	  this compile option is a larger kernel text size of about 2%.
 
 	  Usage:
 
-	  Dynamic debugging is controlled by the debugfs file,
-	  dynamic_printk/modules. This file contains a list of the modules that
-	  can be enabled. The format of the file is the module name, followed
-	  by a set of flags that can be enabled. The first flag is always the
-	  'enabled' flag. For example:
+	  Dynamic debugging is controlled via the 'dynamic_debug/ddebug' file,
+	  which is contained in the 'debugfs' filesystem. Thus, the debugfs
+	  filesystem must first be mounted before making use of this feature.
+	  We refer the control file as: <debugfs>/dynamic_debug/ddebug. This
+	  file contains a list of the debug statements that can be enabled. The
+	  format for each line of the file is:
 
-		<module_name> <enabled=0/1>
-				.
-				.
-				.
+		filename:lineno [module]function flags format
 
-	  <module_name> : Name of the module in which the debug call resides
-	  <enabled=0/1> : whether the messages are enabled or not
+	  filename : source file of the debug statement
+	  lineno : line number of the debug statement
+	  module : module that contains the debug statement
+	  function : function that contains the debug statement
+          flags : 'p' means the line is turned 'on' for printing
+          format : the format used for the debug statement
 
 	  From a live system:
 
-		snd_hda_intel enabled=0
-		fixup enabled=0
-		driver enabled=0
+		nullarbor:~ # cat <debugfs>/dynamic_debug/ddebug
+		# filename:lineno [module]function flags format
+		fs/aio.c:222 [aio]__put_ioctx - "__put_ioctx:\040freeing\040%p\012"
+		fs/aio.c:248 [aio]ioctx_alloc - "ENOMEM:\040nr_events\040too\040high\012"
+		fs/aio.c:1770 [aio]sys_io_cancel - "calling\040cancel\012"
 
-	  Enable a module:
+	  Example usage:
 
-	  	$echo "set enabled=1 <module_name>" > dynamic_printk/modules
+		// enable the message at line 1603 of file svcsock.c
+		nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
+						<debugfs>/dynamic_debug/ddebug
 
-	  Disable a module:
+		// enable all the messages in file svcsock.c
+		nullarbor:~ # echo -n 'file svcsock.c +p' >
+						<debugfs>/dynamic_debug/ddebug
 
-	  	$echo "set enabled=0 <module_name>" > dynamic_printk/modules
+		// enable all the messages in the NFS server module
+		nullarbor:~ # echo -n 'module nfsd +p' >
+						<debugfs>/dynamic_debug/ddebug
 
-	  Enable all modules:
+		// enable all 12 messages in the function svc_process()
+		nullarbor:~ # echo -n 'func svc_process +p' >
+						<debugfs>/dynamic_debug/ddebug
 
-		$echo "set enabled=1 all" > dynamic_printk/modules
+		// disable all 12 messages in the function svc_process()
+		nullarbor:~ # echo -n 'func svc_process -p' >
+						<debugfs>/dynamic_debug/ddebug
 
-	  Disable all modules:
-
-		$echo "set enabled=0 all" > dynamic_printk/modules
-
-	  Finally, passing "dynamic_printk" at the command line enables
-	  debugging for all modules. This mode can be turned off via the above
-	  disable command.
+	  See Documentation/dynamic-debug-howto.txt for additional information.
 
 source "samples/Kconfig"
 

lib/Makefile

@@ -11,7 +11,8 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \
 	 rbtree.o radix-tree.o dump_stack.o \
 	 idr.o int_sqrt.o extable.o prio_tree.o \
 	 sha1.o irq_regs.o reciprocal_div.o argv_split.o \
-	 proportions.o prio_heap.o ratelimit.o show_mem.o is_single_threaded.o
+	 proportions.o prio_heap.o ratelimit.o show_mem.o \
+	 is_single_threaded.o plist.o decompress.o
 
 lib-$(CONFIG_MMU) += ioremap.o
 lib-$(CONFIG_SMP) += cpumask.o
@@ -40,7 +41,6 @@ lib-$(CONFIG_GENERIC_FIND_NEXT_BIT) += find_next_bit.o
 lib-$(CONFIG_GENERIC_FIND_LAST_BIT) += find_last_bit.o
 obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
 obj-$(CONFIG_LOCK_KERNEL) += kernel_lock.o
-obj-$(CONFIG_PLIST) += plist.o
 obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
 obj-$(CONFIG_DEBUG_LIST) += list_debug.o
 obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
@@ -65,6 +65,10 @@ obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
 obj-$(CONFIG_LZO_COMPRESS) += lzo/
 obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
 
+lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
+lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
+lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o
+
 obj-$(CONFIG_TEXTSEARCH) += textsearch.o
 obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
 obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
@@ -82,7 +86,9 @@ obj-$(CONFIG_HAVE_LMB) += lmb.o
 
 obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o
 
-obj-$(CONFIG_DYNAMIC_PRINTK_DEBUG) += dynamic_printk.o
+obj-$(CONFIG_DYNAMIC_DEBUG) += dynamic_debug.o
+
+obj-$(CONFIG_NLATTR) += nlattr.o
 
 hostprogs-y	:= gen_crc32table
 clean-files	:= crc32table.h

lib/decompress.c

@@ -0,0 +1,54 @@
+/*
+ * decompress.c
+ *
+ * Detect the decompression method based on magic number
+ */
+
+#include <linux/decompress/generic.h>
+
+#include <linux/decompress/bunzip2.h>
+#include <linux/decompress/unlzma.h>
+#include <linux/decompress/inflate.h>
+
+#include <linux/types.h>
+#include <linux/string.h>
+
+#ifndef CONFIG_DECOMPRESS_GZIP
+# define gunzip NULL
+#endif
+#ifndef CONFIG_DECOMPRESS_BZIP2
+# define bunzip2 NULL
+#endif
+#ifndef CONFIG_DECOMPRESS_LZMA
+# define unlzma NULL
+#endif
+
+static const struct compress_format {
+	unsigned char magic[2];
+	const char *name;
+	decompress_fn decompressor;
+} compressed_formats[] = {
+	{ {037, 0213}, "gzip", gunzip },
+	{ {037, 0236}, "gzip", gunzip },
+	{ {0x42, 0x5a}, "bzip2", bunzip2 },
+	{ {0x5d, 0x00}, "lzma", unlzma },
+	{ {0, 0}, NULL, NULL }
+};
+
+decompress_fn decompress_method(const unsigned char *inbuf, int len,
+				const char **name)
+{
+	const struct compress_format *cf;
+
+	if (len < 2)
+		return NULL;	/* Need at least this much... */
+
+	for (cf = compressed_formats; cf->name; cf++) {
+		if (!memcmp(inbuf, cf->magic, 2))
+			break;
+
+	}
+	if (name)
+		*name = cf->name;
+	return cf->decompressor;
+}

lib/decompress_inflate.c

@@ -0,0 +1,167 @@
+#ifdef STATIC
+/* Pre-boot environment: included */
+
+/* prevent inclusion of _LINUX_KERNEL_H in pre-boot environment: lots
+ * errors about console_printk etc... on ARM */
+#define _LINUX_KERNEL_H
+
+#include "zlib_inflate/inftrees.c"
+#include "zlib_inflate/inffast.c"
+#include "zlib_inflate/inflate.c"
+
+#else /* STATIC */
+/* initramfs et al: linked */
+
+#include <linux/zutil.h>
+
+#include "zlib_inflate/inftrees.h"
+#include "zlib_inflate/inffast.h"
+#include "zlib_inflate/inflate.h"
+
+#include "zlib_inflate/infutil.h"
+
+#endif /* STATIC */
+
+#include <linux/decompress/mm.h>
+
+#define INBUF_LEN (16*1024)
+
+/* Included from initramfs et al code */
+STATIC int INIT gunzip(unsigned char *buf, int len,
+		       int(*fill)(void*, unsigned int),
+		       int(*flush)(void*, unsigned int),
+		       unsigned char *out_buf,
+		       int *pos,
+		       void(*error_fn)(char *x)) {
+	u8 *zbuf;
+	struct z_stream_s *strm;
+	int rc;
+	size_t out_len;
+
+	set_error_fn(error_fn);
+	rc = -1;
+	if (flush) {
+		out_len = 0x8000; /* 32 K */
+		out_buf = malloc(out_len);
+	} else {
+		out_len = 0x7fffffff; /* no limit */
+	}
+	if (!out_buf) {
+		error("Out of memory while allocating output buffer");
+		goto gunzip_nomem1;
+	}
+
+	if (buf)
+		zbuf = buf;
+	else {
+		zbuf = malloc(INBUF_LEN);
+		len = 0;
+	}
+	if (!zbuf) {
+		error("Out of memory while allocating input buffer");
+		goto gunzip_nomem2;
+	}
+
+	strm = malloc(sizeof(*strm));
+	if (strm == NULL) {
+		error("Out of memory while allocating z_stream");
+		goto gunzip_nomem3;
+	}
+
+	strm->workspace = malloc(flush ? zlib_inflate_workspacesize() :
+				 sizeof(struct inflate_state));
+	if (strm->workspace == NULL) {
+		error("Out of memory while allocating workspace");
+		goto gunzip_nomem4;
+	}
+
+	if (len == 0)
+		len = fill(zbuf, INBUF_LEN);
+
+	/* verify the gzip header */
+	if (len < 10 ||
+	   zbuf[0] != 0x1f || zbuf[1] != 0x8b || zbuf[2] != 0x08) {
+		if (pos)
+			*pos = 0;
+		error("Not a gzip file");
+		goto gunzip_5;
+	}
+
+	/* skip over gzip header (1f,8b,08... 10 bytes total +
+	 * possible asciz filename)
+	 */
+	strm->next_in = zbuf + 10;
+	/* skip over asciz filename */
+	if (zbuf[3] & 0x8) {
+		while (strm->next_in[0])
+			strm->next_in++;
+		strm->next_in++;
+	}
+	strm->avail_in = len - (strm->next_in - zbuf);
+
+	strm->next_out = out_buf;
+	strm->avail_out = out_len;
+
+	rc = zlib_inflateInit2(strm, -MAX_WBITS);
+
+	if (!flush) {
+		WS(strm)->inflate_state.wsize = 0;
+		WS(strm)->inflate_state.window = NULL;
+	}
+
+	while (rc == Z_OK) {
+		if (strm->avail_in == 0) {
+			/* TODO: handle case where both pos and fill are set */
+			len = fill(zbuf, INBUF_LEN);
+			if (len < 0) {
+				rc = -1;
+				error("read error");
+				break;
+			}
+			strm->next_in = zbuf;
+			strm->avail_in = len;
+		}
+		rc = zlib_inflate(strm, 0);
+
+		/* Write any data generated */
+		if (flush && strm->next_out > out_buf) {
+			int l = strm->next_out - out_buf;
+			if (l != flush(out_buf, l)) {
+				rc = -1;
+				error("write error");
+				break;
+			}
+			strm->next_out = out_buf;
+			strm->avail_out = out_len;
+		}
+
+		/* after Z_FINISH, only Z_STREAM_END is "we unpacked it all" */
+		if (rc == Z_STREAM_END) {
+			rc = 0;
+			break;
+		} else if (rc != Z_OK) {
+			error("uncompression error");
+			rc = -1;
+		}
+	}
+
+	zlib_inflateEnd(strm);
+	if (pos)
+		/* add + 8 to skip over trailer */
+		*pos = strm->next_in - zbuf+8;
+
+gunzip_5:
+	free(strm->workspace);
+gunzip_nomem4:
+	free(strm);
+gunzip_nomem3:
+	if (!buf)
+		free(zbuf);
+gunzip_nomem2:
+	if (flush)
+		free(out_buf);
+gunzip_nomem1:
+	return rc; /* returns Z_OK (0) if successful */
+}
+
+#define decompress gunzip

lib/dynamic_printk.c

@@ -1,414 +0,0 @@
-/*
- * lib/dynamic_printk.c
- *
- * make pr_debug()/dev_dbg() calls runtime configurable based upon their
- * their source module.
- *
- * Copyright (C) 2008 Red Hat, Inc., Jason Baron <jbaron@redhat.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/uaccess.h>
-#include <linux/seq_file.h>
-#include <linux/debugfs.h>
-#include <linux/fs.h>
-
-extern struct mod_debug __start___verbose[];
-extern struct mod_debug __stop___verbose[];
-
-struct debug_name {
-	struct hlist_node hlist;
-	struct hlist_node hlist2;
-	int hash1;
-	int hash2;
-	char *name;
-	int enable;
-	int type;
-};
-
-static int nr_entries;
-static int num_enabled;
-int dynamic_enabled = DYNAMIC_ENABLED_NONE;
-static struct hlist_head module_table[DEBUG_HASH_TABLE_SIZE] =
-	{ [0 ... DEBUG_HASH_TABLE_SIZE-1] = HLIST_HEAD_INIT };
-static struct hlist_head module_table2[DEBUG_HASH_TABLE_SIZE] =
-	{ [0 ... DEBUG_HASH_TABLE_SIZE-1] = HLIST_HEAD_INIT };
-static DECLARE_MUTEX(debug_list_mutex);
-
-/* dynamic_printk_enabled, and dynamic_printk_enabled2 are bitmasks in which
- * bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They
- * use independent hash functions, to reduce the chance of false positives.
- */
-long long dynamic_printk_enabled;
-EXPORT_SYMBOL_GPL(dynamic_printk_enabled);
-long long dynamic_printk_enabled2;
-EXPORT_SYMBOL_GPL(dynamic_printk_enabled2);
-
-/* returns the debug module pointer. */
-static struct debug_name *find_debug_module(char *module_name)
-{
-	int i;
-	struct hlist_head *head;
-	struct hlist_node *node;
-	struct debug_name *element;
-
-	element = NULL;
-	for (i = 0; i < DEBUG_HASH_TABLE_SIZE; i++) {
-		head = &module_table[i];
-		hlist_for_each_entry_rcu(element, node, head, hlist)
-			if (!strcmp(element->name, module_name))
-				return element;
-	}
-	return NULL;
-}
-
-/* returns the debug module pointer. */
-static struct debug_name *find_debug_module_hash(char *module_name, int hash)
-{
-	struct hlist_head *head;
-	struct hlist_node *node;
-	struct debug_name *element;
-
-	element = NULL;
-	head = &module_table[hash];
-	hlist_for_each_entry_rcu(element, node, head, hlist)
-		if (!strcmp(element->name, module_name))
-			return element;
-	return NULL;
-}
-
-/* caller must hold mutex*/
-static int __add_debug_module(char *mod_name, int hash, int hash2)
-{
-	struct debug_name *new;
-	char *module_name;
-	int ret = 0;
-
-	if (find_debug_module(mod_name)) {
-		ret = -EINVAL;
-		goto out;
-	}
-	module_name = kmalloc(strlen(mod_name) + 1, GFP_KERNEL);
-	if (!module_name) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	module_name = strcpy(module_name, mod_name);
-	module_name[strlen(mod_name)] = '\0';
-	new = kzalloc(sizeof(struct debug_name), GFP_KERNEL);
-	if (!new) {
-		kfree(module_name);
-		ret = -ENOMEM;
-		goto out;
-	}
-	INIT_HLIST_NODE(&new->hlist);
-	INIT_HLIST_NODE(&new->hlist2);
-	new->name = module_name;
-	new->hash1 = hash;
-	new->hash2 = hash2;
-	hlist_add_head_rcu(&new->hlist, &module_table[hash]);
-	hlist_add_head_rcu(&new->hlist2, &module_table2[hash2]);
-	nr_entries++;
-out:
-	return ret;
-}
-
-int unregister_dynamic_debug_module(char *mod_name)
-{
-	struct debug_name *element;
-	int ret = 0;
-
-	down(&debug_list_mutex);
-	element = find_debug_module(mod_name);
-	if (!element) {
-		ret = -EINVAL;
-		goto out;
-	}
-	hlist_del_rcu(&element->hlist);
-	hlist_del_rcu(&element->hlist2);
-	synchronize_rcu();
-	kfree(element->name);
-	if (element->enable)
-		num_enabled--;
-	kfree(element);
-	nr_entries--;
-out:
-	up(&debug_list_mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(unregister_dynamic_debug_module);
-
-int register_dynamic_debug_module(char *mod_name, int type, char *share_name,
-					char *flags, int hash, int hash2)
-{
-	struct debug_name *elem;
-	int ret = 0;
-
-	down(&debug_list_mutex);
-	elem = find_debug_module(mod_name);
-	if (!elem) {
-		if (__add_debug_module(mod_name, hash, hash2))
-			goto out;
-		elem = find_debug_module(mod_name);
-		if (dynamic_enabled == DYNAMIC_ENABLED_ALL &&
-				!strcmp(mod_name, share_name)) {
-			elem->enable = true;
-			num_enabled++;
-		}
-	}
-	elem->type |= type;
-out:
-	up(&debug_list_mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(register_dynamic_debug_module);
-
-int __dynamic_dbg_enabled_helper(char *mod_name, int type, int value, int hash)
-{
-	struct debug_name *elem;
-	int ret = 0;
-
-	if (dynamic_enabled == DYNAMIC_ENABLED_ALL)
-		return 1;
-	rcu_read_lock();
-	elem = find_debug_module_hash(mod_name, hash);
-	if (elem && elem->enable)
-		ret = 1;
-	rcu_read_unlock();
-	return ret;
-}
-EXPORT_SYMBOL_GPL(__dynamic_dbg_enabled_helper);
-
-static void set_all(bool enable)
-{
-	struct debug_name *e;
-	struct hlist_node *node;
-	int i;
-	long long enable_mask;
-
-	for (i = 0; i < DEBUG_HASH_TABLE_SIZE; i++) {
-		if (module_table[i].first != NULL) {
-			hlist_for_each_entry(e, node, &module_table[i], hlist) {
-				e->enable = enable;
-			}
-		}
-	}
-	if (enable)
-		enable_mask = ULLONG_MAX;
-	else
-		enable_mask = 0;
-	dynamic_printk_enabled = enable_mask;
-	dynamic_printk_enabled2 = enable_mask;
-}
-
-static int disabled_hash(int i, bool first_table)
-{
-	struct debug_name *e;
-	struct hlist_node *node;
-
-	if (first_table) {
-		hlist_for_each_entry(e, node, &module_table[i], hlist) {
-			if (e->enable)
-				return 0;
-		}
-	} else {
-		hlist_for_each_entry(e, node, &module_table2[i], hlist2) {
-			if (e->enable)
-				return 0;
-		}
-	}
-	return 1;
-}
-
-static ssize_t pr_debug_write(struct file *file, const char __user *buf,
-				size_t length, loff_t *ppos)
-{
-	char *buffer, *s, *value_str, *setting_str;
-	int err, value;
-	struct debug_name *elem = NULL;
-	int all = 0;
-
-	if (length > PAGE_SIZE || length < 0)
-		return -EINVAL;
-
-	buffer = (char *)__get_free_page(GFP_KERNEL);
-	if (!buffer)
-		return -ENOMEM;
-
-	err = -EFAULT;
-	if (copy_from_user(buffer, buf, length))
-		goto out;
-
-	err = -EINVAL;
-	if (length < PAGE_SIZE)
-		buffer[length] = '\0';
-	else if (buffer[PAGE_SIZE-1])
-		goto out;
-
-	err = -EINVAL;
-	down(&debug_list_mutex);
-
-	if (strncmp("set", buffer, 3))
-		goto out_up;
-	s = buffer + 3;
-	setting_str = strsep(&s, "=");
-	if (s == NULL)
-		goto out_up;
-	setting_str = strstrip(setting_str);
-	value_str = strsep(&s, " ");
-	if (s == NULL)
-		goto out_up;
-	s = strstrip(s);
-	if (!strncmp(s, "all", 3))
-		all = 1;
-	else
-		elem = find_debug_module(s);
-	if (!strncmp(setting_str, "enable", 6)) {
-		value = !!simple_strtol(value_str, NULL, 10);
-		if (all) {
-			if (value) {
-				set_all(true);
-				num_enabled = nr_entries;
-				dynamic_enabled = DYNAMIC_ENABLED_ALL;
-			} else {
-				set_all(false);
-				num_enabled = 0;
-				dynamic_enabled = DYNAMIC_ENABLED_NONE;
-			}
-			err = 0;
-		} else if (elem) {
-			if (value && (elem->enable == 0)) {
-				dynamic_printk_enabled |= (1LL << elem->hash1);
-				dynamic_printk_enabled2 |= (1LL << elem->hash2);
-				elem->enable = 1;
-				num_enabled++;
-				dynamic_enabled = DYNAMIC_ENABLED_SOME;
-				err = 0;
-				printk(KERN_DEBUG
-					"debugging enabled for module %s\n",
-					elem->name);
-			} else if (!value && (elem->enable == 1)) {
-				elem->enable = 0;
-				num_enabled--;
-				if (disabled_hash(elem->hash1, true))
-					dynamic_printk_enabled &=
-							~(1LL << elem->hash1);
-				if (disabled_hash(elem->hash2, false))
-					dynamic_printk_enabled2 &=
-							~(1LL << elem->hash2);
-				if (num_enabled)
-					dynamic_enabled = DYNAMIC_ENABLED_SOME;
-				else
-					dynamic_enabled = DYNAMIC_ENABLED_NONE;
-				err = 0;
-				printk(KERN_DEBUG
-					"debugging disabled for module %s\n",
-					elem->name);
-			}
-		}
-	}
-	if (!err)
-		err = length;
-out_up:
-	up(&debug_list_mutex);
-out:
-	free_page((unsigned long)buffer);
-	return err;
-}
-
-static void *pr_debug_seq_start(struct seq_file *f, loff_t *pos)
-{
-	return (*pos < DEBUG_HASH_TABLE_SIZE) ? pos : NULL;
-}
-
-static void *pr_debug_seq_next(struct seq_file *s, void *v, loff_t *pos)
-{
-	(*pos)++;
-	if (*pos >= DEBUG_HASH_TABLE_SIZE)
-		return NULL;
-	return pos;
-}
-
-static void pr_debug_seq_stop(struct seq_file *s, void *v)
-{
-	/* Nothing to do */
-}
-
-static int pr_debug_seq_show(struct seq_file *s, void *v)
-{
-	struct hlist_head *head;
-	struct hlist_node *node;
-	struct debug_name *elem;
-	unsigned int i = *(loff_t *) v;
-
-	rcu_read_lock();
-	head = &module_table[i];
-	hlist_for_each_entry_rcu(elem, node, head, hlist) {
-		seq_printf(s, "%s enabled=%d", elem->name, elem->enable);
-		seq_printf(s, "\n");
-	}
-	rcu_read_unlock();
-	return 0;
-}
-
-static struct seq_operations pr_debug_seq_ops = {
-	.start = pr_debug_seq_start,
-	.next  = pr_debug_seq_next,
-	.stop  = pr_debug_seq_stop,
-	.show  = pr_debug_seq_show
-};
-
-static int pr_debug_open(struct inode *inode, struct file *filp)
-{
-	return seq_open(filp, &pr_debug_seq_ops);
-}
-
-static const struct file_operations pr_debug_operations = {
-	.open		= pr_debug_open,
-	.read		= seq_read,
-	.write		= pr_debug_write,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
-
-static int __init dynamic_printk_init(void)
-{
-	struct dentry *dir, *file;
-	struct mod_debug *iter;
-	unsigned long value;
-
-	dir = debugfs_create_dir("dynamic_printk", NULL);
-	if (!dir)
-		return -ENOMEM;
-	file = debugfs_create_file("modules", 0644, dir, NULL,
-					&pr_debug_operations);
-	if (!file) {
-		debugfs_remove(dir);
-		return -ENOMEM;
-	}
-	for (value = (unsigned long)__start___verbose;
-		value < (unsigned long)__stop___verbose;
-		value += sizeof(struct mod_debug)) {
-			iter = (struct mod_debug *)value;
-			register_dynamic_debug_module(iter->modname,
-				iter->type,
-				iter->logical_modname,
-				iter->flag_names, iter->hash, iter->hash2);
-	}
-	if (dynamic_enabled == DYNAMIC_ENABLED_ALL)
-		set_all(true);
-	return 0;
-}
-module_init(dynamic_printk_init);
-/* may want to move this earlier so we can get traces as early as possible */
-
-static int __init dynamic_printk_setup(char *str)
-{
-	if (str)
-		return -ENOENT;
-	dynamic_enabled = DYNAMIC_ENABLED_ALL;
-	return 0;
-}
-/* Use early_param(), so we can get debug output as early as possible */
-early_param("dynamic_printk", dynamic_printk_setup);

lib/kernel_lock.c

@@ -39,7 +39,7 @@ static  __cacheline_aligned_in_smp DEFINE_SPINLOCK(kernel_flag);
 int __lockfunc __reacquire_kernel_lock(void)
 {
 	while (!_raw_spin_trylock(&kernel_flag)) {
-		if (test_thread_flag(TIF_NEED_RESCHED))
+		if (need_resched())
 			return -EAGAIN;
 		cpu_relax();
 	}

lib/kobject.c

@@ -212,7 +212,7 @@ static int kobject_add_internal(struct kobject *kobj)
  * @fmt: format string used to build the name
  * @vargs: vargs to format the string.
  */
-static int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
+int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
 				  va_list vargs)
 {
 	const char *old_name = kobj->name;

lib/kobject_uevent.c

@@ -118,6 +118,13 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 	kset = top_kobj->kset;
 	uevent_ops = kset->uevent_ops;
 
+	/* skip the event, if uevent_suppress is set*/
+	if (kobj->uevent_suppress) {
+		pr_debug("kobject: '%s' (%p): %s: uevent_suppress "
+				 "caused the event to drop!\n",
+				 kobject_name(kobj), kobj, __func__);
+		return 0;
+	}
 	/* skip the event, if the filter returns zero. */
 	if (uevent_ops && uevent_ops->filter)
 		if (!uevent_ops->filter(kset, kobj)) {
@@ -227,6 +234,9 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 			NETLINK_CB(skb).dst_group = 1;
 			retval = netlink_broadcast(uevent_sock, skb, 0, 1,
 						   GFP_KERNEL);
+			/* ENOBUFS should be handled in userspace */
+			if (retval == -ENOBUFS)
+				retval = 0;
 		} else
 			retval = -ENOMEM;
 	}
@@ -248,7 +258,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 			goto exit;
 
 		retval = call_usermodehelper(argv[0], argv,
-					     env->envp, UMH_WAIT_EXEC);
+					     env->envp, UMH_NO_WAIT);
 	}
 
 exit:

lib/zlib_inflate/inflate.h

@@ -1,3 +1,6 @@
+#ifndef INFLATE_H
+#define INFLATE_H
+
 /* inflate.h -- internal inflate state definition
  * Copyright (C) 1995-2004 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
@@ -105,3 +108,4 @@ struct inflate_state {
     unsigned short work[288];   /* work area for code table building */
     code codes[ENOUGH];         /* space for code tables */
 };
+#endif

lib/zlib_inflate/inftrees.h

@@ -1,3 +1,6 @@
+#ifndef INFTREES_H
+#define INFTREES_H
+
 /* inftrees.h -- header to use inftrees.c
  * Copyright (C) 1995-2005 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
@@ -53,3 +56,4 @@ typedef enum {
 extern int zlib_inflate_table (codetype type, unsigned short *lens,
                              unsigned codes, code **table,
                              unsigned *bits, unsigned short *work);
+#endif