Merge branch 'linus' into sched/urgent

Conflicts:
	kernel/sched_idletask.c

Merge reason: resolve the conflicts, pick up latest changes.

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

2 files changed, 31 insertions, 9 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 54c655ce9c04..a23da9f01803 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1079,6 +1079,28 @@ config SLOB
 
 endchoice
 
+config MMAP_ALLOW_UNINITIALIZED
+	bool "Allow mmapped anonymous memory to be uninitialized"
+	depends on EMBEDDED && !MMU
+	default n
+	help
+	  Normally, and according to the Linux spec, anonymous memory obtained
+	  from mmap() has it's contents cleared before it is passed to
+	  userspace.  Enabling this config option allows you to request that
+	  mmap() skip that if it is given an MAP_UNINITIALIZED flag, thus
+	  providing a huge performance boost.  If this option is not enabled,
+	  then the flag will be ignored.
+
+	  This is taken advantage of by uClibc's malloc(), and also by
+	  ELF-FDPIC binfmt's brk and stack allocator.
+
+	  Because of the obvious security issues, this option should only be
+	  enabled on embedded devices where you control what is run in
+	  userspace.  Since that isn't generally a problem on no-MMU systems,
+	  it is normally safe to say Y here.
+
+	  See Documentation/nommu-mmap.txt for more information.
+
 config PROFILING
 	bool "Profiling support (EXPERIMENTAL)"
 	help
diff --git a/init/main.c b/init/main.c
index 4051d75dd2d6..c3db4a98b369 100644
--- a/init/main.c
+++ b/init/main.c
@@ -691,10 +691,10 @@ asmlinkage void __init start_kernel(void)
 static void __init do_ctors(void)
 {
 #ifdef CONFIG_CONSTRUCTORS
-	ctor_fn_t *call = (ctor_fn_t *) __ctors_start;
+	ctor_fn_t *fn = (ctor_fn_t *) __ctors_start;
 
-	for (; call < (ctor_fn_t *) __ctors_end; call++)
-		(*call)();
+	for (; fn < (ctor_fn_t *) __ctors_end; fn++)
+		(*fn)();
 #endif
 }
 
@@ -755,10 +755,10 @@ extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
 
 static void __init do_initcalls(void)
 {
-	initcall_t *call;
+	initcall_t *fn;
 
-	for (call = __early_initcall_end; call < __initcall_end; call++)
-		do_one_initcall(*call);
+	for (fn = __early_initcall_end; fn < __initcall_end; fn++)
+		do_one_initcall(*fn);
 
 	/* Make sure there is no pending stuff from the initcall sequence */
 	flush_scheduled_work();
@@ -785,10 +785,10 @@ static void __init do_basic_setup(void)
 
 static void __init do_pre_smp_initcalls(void)
 {
-	initcall_t *call;
+	initcall_t *fn;
 
-	for (call = __initcall_start; call < __early_initcall_end; call++)
-		do_one_initcall(*call);
+	for (fn = __initcall_start; fn < __early_initcall_end; fn++)
+		do_one_initcall(*fn);
 }
 
 static void run_init_process(char *init_filename)