Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/urgent

5 files changed, 32 insertions, 7 deletions

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index b5a550a39a70..59d3ef100eb9 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -16,6 +16,11 @@ struct trace_print_flags {
         const char              *name;
 };
 
+struct trace_print_flags_u64 {
+        unsigned long long      mask;
+        const char              *name;
+};
+
 const char *ftrace_print_flags_seq(struct trace_seq *p, const char *delim,
                                    unsigned long flags,
                                    const struct trace_print_flags *flag_array);
@@ -23,6 +28,13 @@ const char *ftrace_print_flags_seq(struct trace_seq *p, const char *delim,
 const char *ftrace_print_symbols_seq(struct trace_seq *p, unsigned long val,
                                      const struct trace_print_flags *symbol_array);
 
+#if BITS_PER_LONG == 32
+const char *ftrace_print_symbols_seq_u64(struct trace_seq *p,
+                                         unsigned long long val,
+                                         const struct trace_print_flags_u64
+                                                                 *symbol_array);
+#endif
+
 const char *ftrace_print_hex_seq(struct trace_seq *p,
                                  const unsigned char *buf, int len);
 
diff --git a/include/linux/sched.h b/include/linux/sched.h
index f18300eddfcb..106bd8a45998 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1535,7 +1535,7 @@ struct task_struct {
 #ifdef CONFIG_TRACING
         /* state flags for use by tracers */
         unsigned long trace;
-        /* bitmask of trace recursion */
+        /* bitmask and counter of trace recursion */
         unsigned long trace_recursion;
 #endif /* CONFIG_TRACING */
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR /* memcg uses this to do batch job */
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index d512d98dfb7d..5ca0951e1855 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -93,8 +93,8 @@ static inline unsigned long __copy_from_user_nocache(void *to,
  * Safely read from address @src to the buffer at @dst.  If a kernel fault
  * happens, handle that and return -EFAULT.
  */
-extern long probe_kernel_read(void *dst, void *src, size_t size);
-extern long __probe_kernel_read(void *dst, void *src, size_t size);
+extern long probe_kernel_read(void *dst, const void *src, size_t size);
+extern long __probe_kernel_read(void *dst, const void *src, size_t size);
 
 /*
  * probe_kernel_write(): safely attempt to write to a location
@@ -105,7 +105,7 @@ extern long __probe_kernel_read(void *dst, void *src, size_t size);
  * Safely write to address @dst from the buffer at @src.  If a kernel fault
  * happens, handle that and return -EFAULT.
  */
-extern long notrace probe_kernel_write(void *dst, void *src, size_t size);
-extern long notrace __probe_kernel_write(void *dst, void *src, size_t size);
+extern long notrace probe_kernel_write(void *dst, const void *src, size_t size);
+extern long notrace __probe_kernel_write(void *dst, const void *src, size_t size);
 
 #endif          /* __LINUX_UACCESS_H__ */
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index f445cff66ab7..4114129f0794 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -28,7 +28,7 @@ struct extent_buffer;
                 { BTRFS_SHARED_DATA_REF_KEY,    "SHARED_DATA_REF" })
 
 #define __show_root_type(obj)                                           \
-        __print_symbolic(obj,                                           \
+        __print_symbolic_u64(obj,                                       \
                 { BTRFS_ROOT_TREE_OBJECTID,     "ROOT_TREE"     },      \
                 { BTRFS_EXTENT_TREE_OBJECTID,   "EXTENT_TREE"   },      \
                 { BTRFS_CHUNK_TREE_OBJECTID,    "CHUNK_TREE"    },      \
@@ -125,7 +125,7 @@ DEFINE_EVENT(btrfs__inode, btrfs_inode_evict,
 );
 
 #define __show_map_type(type)                                           \
-        __print_symbolic(type,                                          \
+        __print_symbolic_u64(type,                                      \
                 { EXTENT_MAP_LAST_BYTE, "LAST_BYTE"     },              \
                 { EXTENT_MAP_HOLE,      "HOLE"          },              \
                 { EXTENT_MAP_INLINE,    "INLINE"        },              \
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 3e68366d485a..533c49f48047 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -205,6 +205,19 @@
                 ftrace_print_symbols_seq(p, value, symbols);            \
         })
 
+#undef __print_symbolic_u64
+#if BITS_PER_LONG == 32
+#define __print_symbolic_u64(value, symbol_array...)                    \
+        ({                                                              \
+                static const struct trace_print_flags_u64 symbols[] =   \
+                        { symbol_array, { -1, NULL } };                 \
+                ftrace_print_symbols_seq_u64(p, value, symbols);        \
+        })
+#else
+#define __print_symbolic_u64(value, symbol_array...)                    \
+                        __print_symbolic(value, symbol_array)
+#endif
+
 #undef __print_hex
 #define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len)