Merge branch 'perf/urgent' into perf/core

Merge reason: We are going to queue up a dependent patch.

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

9 files changed, 46 insertions, 56 deletions

diff --git a/include/linux/amba/serial.h b/include/linux/amba/serial.h
index 514ed45c462e..d117b29d1062 100644
--- a/include/linux/amba/serial.h
+++ b/include/linux/amba/serial.h
@@ -23,6 +23,8 @@
 #ifndef ASM_ARM_HARDWARE_SERIAL_AMBA_H
 #define ASM_ARM_HARDWARE_SERIAL_AMBA_H
 
+#include <linux/types.h>
+
 /* -------------------------------------------------------------------------------
  *  From AMBA UART (PL010) Block Specification
  * -------------------------------------------------------------------------------
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index d64a55b23afd..ff5f5256d175 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -47,27 +47,6 @@ struct dentry_stat_t {
 };
 extern struct dentry_stat_t dentry_stat;
 
-/*
- * Compare 2 name strings, return 0 if they match, otherwise non-zero.
- * The strings are both count bytes long, and count is non-zero.
- */
-static inline int dentry_cmp(const unsigned char *cs, size_t scount,
-                                const unsigned char *ct, size_t tcount)
-{
-        int ret;
-        if (scount != tcount)
-                return 1;
-        do {
-                ret = (*cs != *ct);
-                if (ret)
-                        break;
-                cs++;
-                ct++;
-                tcount--;
-        } while (tcount);
-        return ret;
-}
-
 /* Name hashing routines. Initial hash value */
 /* Hash courtesy of the R5 hash in reiserfs modulo sign bits */
 #define init_name_hash()                0
@@ -89,14 +68,7 @@ static inline unsigned long end_name_hash(unsigned long hash)
 }
 
 /* Compute the hash for a name string. */
-static inline unsigned int
-full_name_hash(const unsigned char *name, unsigned int len)
-{
-        unsigned long hash = init_name_hash();
-        while (len--)
-                hash = partial_name_hash(*name++, hash);
-        return end_name_hash(hash);
-}
+extern unsigned int full_name_hash(const unsigned char *, unsigned int);
 
 /*
  * Try to keep struct dentry aligned on 64 byte cachelines (this will
@@ -309,7 +281,8 @@ extern struct dentry *d_ancestor(struct dentry *, struct dentry *);
 extern struct dentry *d_lookup(struct dentry *, struct qstr *);
 extern struct dentry *d_hash_and_lookup(struct dentry *, struct qstr *);
 extern struct dentry *__d_lookup(struct dentry *, struct qstr *);
-extern struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name,
+extern struct dentry *__d_lookup_rcu(const struct dentry *parent,
+                                const struct qstr *name,
                                 unsigned *seq, struct inode **inode);
 
 /**
diff --git a/include/linux/kmsg_dump.h b/include/linux/kmsg_dump.h
index fee66317e071..35f7237ec972 100644
--- a/include/linux/kmsg_dump.h
+++ b/include/linux/kmsg_dump.h
@@ -15,13 +15,18 @@
 #include <linux/errno.h>
 #include <linux/list.h>
 
+/*
+ * Keep this list arranged in rough order of priority. Anything listed after
+ * KMSG_DUMP_OOPS will not be logged by default unless printk.always_kmsg_dump
+ * is passed to the kernel.
+ */
 enum kmsg_dump_reason {
-        KMSG_DUMP_OOPS,
         KMSG_DUMP_PANIC,
+        KMSG_DUMP_OOPS,
+        KMSG_DUMP_EMERG,
         KMSG_DUMP_RESTART,
         KMSG_DUMP_HALT,
         KMSG_DUMP_POWEROFF,
-        KMSG_DUMP_EMERG,
 };
 
 /**
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 4d34356fe644..b80de520670b 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -129,7 +129,6 @@ extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
 extern void mem_cgroup_replace_page_cache(struct page *oldpage,
                                         struct page *newpage);
 
-extern void mem_cgroup_reset_owner(struct page *page);
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
 extern int do_swap_account;
 #endif
@@ -392,10 +391,6 @@ static inline void mem_cgroup_replace_page_cache(struct page *oldpage,
                                 struct page *newpage)
 {
 }
-
-static inline void mem_cgroup_reset_owner(struct page *page)
-{
-}
 #endif /* CONFIG_CGROUP_MEM_CONT */
 
 #if !defined(CONFIG_CGROUP_MEM_RES_CTLR) || !defined(CONFIG_DEBUG_VM)
diff --git a/include/linux/of.h b/include/linux/of.h
index a75a831e2057..92cf6ad35e0e 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -281,6 +281,14 @@ static inline struct property *of_find_property(const struct device_node *np,
         return NULL;
 }
 
+static inline struct device_node *of_find_compatible_node(
+                                                struct device_node *from,
+                                                const char *type,
+                                                const char *compat)
+{
+        return NULL;
+}
+
 static inline int of_property_read_u32_array(const struct device_node *np,
                                              const char *propname,
                                              u32 *out_values, size_t sz)
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 32cd1f67462e..21638ae14e07 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -348,9 +348,9 @@ do {									\
 #define _this_cpu_generic_to_op(pcp, val, op)                           \
 do {                                                                    \
         unsigned long flags;                                            \
-        local_irq_save(flags);                                          \
+        raw_local_irq_save(flags);                                      \
         *__this_cpu_ptr(&(pcp)) op val;                                 \
-        local_irq_restore(flags);                                       \
+        raw_local_irq_restore(flags);                                   \
 } while (0)
 
 #ifndef this_cpu_write
@@ -449,10 +449,10 @@ do {									\
 ({                                                                      \
         typeof(pcp) ret__;                                              \
         unsigned long flags;                                            \
-        local_irq_save(flags);                                          \
+        raw_local_irq_save(flags);                                      \
         __this_cpu_add(pcp, val);                                       \
         ret__ = __this_cpu_read(pcp);                                   \
-        local_irq_restore(flags);                                       \
+        raw_local_irq_restore(flags);                                   \
         ret__;                                                          \
 })
 
@@ -479,10 +479,10 @@ do {									\
 #define _this_cpu_generic_xchg(pcp, nval)                               \
 ({      typeof(pcp) ret__;                                              \
         unsigned long flags;                                            \
-        local_irq_save(flags);                                          \
+        raw_local_irq_save(flags);                                      \
         ret__ = __this_cpu_read(pcp);                                   \
         __this_cpu_write(pcp, nval);                                    \
-        local_irq_restore(flags);                                       \
+        raw_local_irq_restore(flags);                                   \
         ret__;                                                          \
 })
 
@@ -507,11 +507,11 @@ do {									\
 ({                                                                      \
         typeof(pcp) ret__;                                              \
         unsigned long flags;                                            \
-        local_irq_save(flags);                                          \
+        raw_local_irq_save(flags);                                      \
         ret__ = __this_cpu_read(pcp);                                   \
         if (ret__ == (oval))                                            \
                 __this_cpu_write(pcp, nval);                            \
-        local_irq_restore(flags);                                       \
+        raw_local_irq_restore(flags);                                   \
         ret__;                                                          \
 })
 
@@ -544,10 +544,10 @@ do {									\
 ({                                                                      \
         int ret__;                                                      \
         unsigned long flags;                                            \
-        local_irq_save(flags);                                          \
+        raw_local_irq_save(flags);                                      \
         ret__ = __this_cpu_generic_cmpxchg_double(pcp1, pcp2,           \
                         oval1, oval2, nval1, nval2);                    \
-        local_irq_restore(flags);                                       \
+        raw_local_irq_restore(flags);                                   \
         ret__;                                                          \
 })
 
@@ -718,12 +718,13 @@ do {									\
 # ifndef __this_cpu_add_return_8
 #  define __this_cpu_add_return_8(pcp, val)     __this_cpu_generic_add_return(pcp, val)
 # endif
-# define __this_cpu_add_return(pcp, val)        __pcpu_size_call_return2(this_cpu_add_return_, pcp, val)
+# define __this_cpu_add_return(pcp, val)        \
+        __pcpu_size_call_return2(__this_cpu_add_return_, pcp, val)
 #endif
 
-#define __this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val))
-#define __this_cpu_inc_return(pcp)      this_cpu_add_return(pcp, 1)
-#define __this_cpu_dec_return(pcp)      this_cpu_add_return(pcp, -1)
+#define __this_cpu_sub_return(pcp, val) __this_cpu_add_return(pcp, -(val))
+#define __this_cpu_inc_return(pcp)      __this_cpu_add_return(pcp, 1)
+#define __this_cpu_dec_return(pcp)      __this_cpu_add_return(pcp, -1)
 
 #define __this_cpu_generic_xchg(pcp, nval)                              \
 ({      typeof(pcp) ret__;                                              \
diff --git a/include/linux/regset.h b/include/linux/regset.h
index 8abee6556223..686f37327a49 100644
--- a/include/linux/regset.h
+++ b/include/linux/regset.h
@@ -335,8 +335,11 @@ static inline int copy_regset_to_user(struct task_struct *target,
 {
         const struct user_regset *regset = &view->regsets[setno];
 
+        if (!regset->get)
+                return -EOPNOTSUPP;
+
         if (!access_ok(VERIFY_WRITE, data, size))
-                return -EIO;
+                return -EFAULT;
 
         return regset->get(target, regset, offset, size, NULL, data);
 }
@@ -358,8 +361,11 @@ static inline int copy_regset_from_user(struct task_struct *target,
 {
         const struct user_regset *regset = &view->regsets[setno];
 
+        if (!regset->set)
+                return -EOPNOTSUPP;
+
         if (!access_ok(VERIFY_READ, data, size))
-                return -EIO;
+                return -EFAULT;
 
         return regset->set(target, regset, offset, size, NULL, data);
 }
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 7d379a6bfd88..0657368bd78f 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1777,7 +1777,6 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *
 /*
  * Per process flags
  */
-#define PF_STARTING     0x00000002      /* being created */
 #define PF_EXITING      0x00000004      /* getting shut down */
 #define PF_EXITPIDONE   0x00000008      /* pi exit done on shut down */
 #define PF_VCPU         0x00000010      /* I'm a virtual CPU */
@@ -2371,7 +2370,7 @@ static inline int thread_group_empty(struct task_struct *p)
  * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
  * subscriptions and synchronises with wait4().  Also used in procfs.  Also
  * pins the final release of task.io_context.  Also protects ->cpuset and
- * ->cgroup.subsys[].
+ * ->cgroup.subsys[]. And ->vfork_done.
  *
  * Nests both inside and outside of read_lock(&tasklist_lock).
  * It must not be nested with write_lock_irq(&tasklist_lock),
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 46a85c9e1f25..3c7ffdb40dc6 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -412,7 +412,8 @@ struct tcp_sock {
 
         struct tcp_sack_block recv_sack_cache[4];
 
-        struct sk_buff *highest_sack;   /* highest skb with SACK received
+        struct sk_buff *highest_sack;   /* skb just after the highest
+                                         * skb with SACKed bit set
                                          * (validity guaranteed only if
                                          * sacked_out > 0)
                                          */