From 5f98ecdbcef1920323d8777c0ba55dbd4335d3cf Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Sun, 5 Jun 2011 11:47:29 +0900 Subject: swiotlb: Export swioltb_nr_tbl and utilize it as appropiate. By default the io_tlb_nslabs is set to zero, and gets set to whatever value is passed in via swiotlb_init_with_tbl function. The default value passed in is 64MB. However, if the user provides the 'swiotlb=' the default value is ignored and the value provided by the user is used... Except when the SWIOTLB is used under Xen - there the default value of 64MB is used and the Xen-SWIOTLB has no mechanism to get the 'io_tlb_nslabs' filled out by setup_io_tlb_npages functions. This patch provides a function for the Xen-SWIOTLB to call to see if the io_tlb_nslabs is set and if so use that value. Signed-off-by: FUJITA Tomonori Signed-off-by: Konrad Rzeszutek Wilk --- lib/swiotlb.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'lib') diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 93ca08b8a451..99093b396145 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -110,6 +110,11 @@ setup_io_tlb_npages(char *str) __setup("swiotlb=", setup_io_tlb_npages); /* make io_tlb_overflow tunable too? */ +unsigned long swioltb_nr_tbl(void) +{ + return io_tlb_nslabs; +} + /* Note that this doesn't work with highmem page */ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev, volatile void *address) -- cgit From 29cf519ee086686e5f0fc91cbb2d601dd1190f9c Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 9 Jun 2011 11:23:37 -0700 Subject: vsprintf: Update %pI6c to not compress a single 0 RFC 5952 (http://tools.ietf.org/html/rfc5952) mandates that 2 or more consecutive 0's are required before using :: compression. Update ip6_compressed_string to match the RFC and update the http reference as well. Signed-off-by: Joe Perches Signed-off-by: Linus Torvalds --- lib/vsprintf.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/vsprintf.c b/lib/vsprintf.c index c11205688fb4..4365df31a1d5 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -666,6 +666,8 @@ char *ip6_compressed_string(char *p, const char *addr) colonpos = i; } } + if (longest == 1) /* don't compress a single 0 */ + colonpos = -1; /* emit address */ for (i = 0; i < range; i++) { @@ -826,7 +828,7 @@ int kptr_restrict __read_mostly; * IPv4 uses dot-separated decimal with leading 0's (010.123.045.006) * - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order * - 'I6c' for IPv6 addresses printed as specified by - * http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00 + * http://tools.ietf.org/html/rfc5952 * - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form * "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" * Options for %pU are: -- cgit From a685e08987d1edf1995b76511d4c98ea0e905377 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 8 Jun 2011 21:13:01 -0400 Subject: Delay struct net freeing while there's a sysfs instance refering to it * new refcount in struct net, controlling actual freeing of the memory * new method in kobj_ns_type_operations (->drop_ns()) * ->current_ns() semantics change - it's supposed to be followed by corresponding ->drop_ns(). For struct net in case of CONFIG_NET_NS it bumps the new refcount; net_drop_ns() decrements it and calls net_free() if the last reference has been dropped. Method renamed to ->grab_current_ns(). * old net_free() callers call net_drop_ns() instead. * sysfs_exit_ns() is gone, along with a large part of callchain leading to it; now that the references stored in ->ns[...] stay valid we do not need to hunt them down and replace them with NULL. That fixes problems in sysfs_lookup() and sysfs_readdir(), along with getting rid of sb->s_instances abuse. Note that struct net *shutdown* logics has not changed - net_cleanup() is called exactly when it used to be called. The only thing postponed by having a sysfs instance refering to that struct net is actual freeing of memory occupied by struct net. Signed-off-by: Al Viro --- lib/kobject.c | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-) (limited to 'lib') diff --git a/lib/kobject.c b/lib/kobject.c index 82dc34c095c2..640bd98a4c8a 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -948,14 +948,14 @@ const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj) } -const void *kobj_ns_current(enum kobj_ns_type type) +void *kobj_ns_grab_current(enum kobj_ns_type type) { - const void *ns = NULL; + void *ns = NULL; spin_lock(&kobj_ns_type_lock); if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) && kobj_ns_ops_tbl[type]) - ns = kobj_ns_ops_tbl[type]->current_ns(); + ns = kobj_ns_ops_tbl[type]->grab_current_ns(); spin_unlock(&kobj_ns_type_lock); return ns; @@ -987,23 +987,15 @@ const void *kobj_ns_initial(enum kobj_ns_type type) return ns; } -/* - * kobj_ns_exit - invalidate a namespace tag - * - * @type: the namespace type (i.e. KOBJ_NS_TYPE_NET) - * @ns: the actual namespace being invalidated - * - * This is called when a tag is no longer valid. For instance, - * when a network namespace exits, it uses this helper to - * make sure no sb's sysfs_info points to the now-invalidated - * netns. - */ -void kobj_ns_exit(enum kobj_ns_type type, const void *ns) +void kobj_ns_drop(enum kobj_ns_type type, void *ns) { - sysfs_exit_ns(type, ns); + spin_lock(&kobj_ns_type_lock); + if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) && + kobj_ns_ops_tbl[type] && kobj_ns_ops_tbl[type]->drop_ns) + kobj_ns_ops_tbl[type]->drop_ns(ns); + spin_unlock(&kobj_ns_type_lock); } - EXPORT_SYMBOL(kobject_get); EXPORT_SYMBOL(kobject_put); EXPORT_SYMBOL(kobject_del); -- cgit From b0825ee3a8c570df4873ee397fa453e67fdad5d7 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Wed, 15 Jun 2011 15:08:10 -0700 Subject: lib/bitmap.c: fix kernel-doc notation Fix new kernel-doc warnings in lib/bitmap.c: Warning(lib/bitmap.c:596): No description found for parameter 'buf' Warning(lib/bitmap.c:596): Excess function parameter 'bp' description in '__bitmap_parselist' Signed-off-by: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/bitmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/bitmap.c b/lib/bitmap.c index 41baf02924e6..3f3b68199d74 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -572,7 +572,7 @@ EXPORT_SYMBOL(bitmap_scnlistprintf); /** * __bitmap_parselist - convert list format ASCII string to bitmap - * @bp: read nul-terminated user string from this buffer + * @buf: read nul-terminated user string from this buffer * @buflen: buffer size in bytes. If string is smaller than this * then it must be terminated with a \0. * @is_user: location of buffer, 0 indicates kernel space -- cgit