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authorJeff Dike <jdike@addtoit.com>2007-05-06 23:51:20 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 21:13:02 +0200
commit65a58ab044308ae65ca06c50fb10be5e0e080989 (patch)
tree7022dc793ce0166b4bb586b762dfcecd41df7dd4 /arch/um/sys-i386
parentuml: speed up exec (diff)
downloadlinux-65a58ab044308ae65ca06c50fb10be5e0e080989.tar.xz
linux-65a58ab044308ae65ca06c50fb10be5e0e080989.zip
uml: no locking needed in tls.c
Comment the lack of locking on a couple of globals. Also fix the formatting of __setup_host_supports_tls. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rw-r--r--arch/um/sys-i386/tls.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/um/sys-i386/tls.c b/arch/um/sys-i386/tls.c
index 643dab585727..fea8e5e15cc4 100644
--- a/arch/um/sys-i386/tls.c
+++ b/arch/um/sys-i386/tls.c
@@ -23,9 +23,13 @@
#include "skas.h"
#endif
-/* If needed we can detect when it's uninitialized. */
+/*
+ * If needed we can detect when it's uninitialized.
+ *
+ * These are initialized in an initcall and unchanged thereafter.
+ */
static int host_supports_tls = -1;
-int host_gdt_entry_tls_min = -1;
+int host_gdt_entry_tls_min;
#ifdef CONFIG_MODE_SKAS
int do_set_thread_area_skas(struct user_desc *info)
@@ -361,7 +365,8 @@ out:
/* XXX: This part is probably common to i386 and x86-64. Don't create a common
* file for now, do that when implementing x86-64 support.*/
-static int __init __setup_host_supports_tls(void) {
+static int __init __setup_host_supports_tls(void)
+{
check_host_supports_tls(&host_supports_tls, &host_gdt_entry_tls_min);
if (host_supports_tls) {
printk(KERN_INFO "Host TLS support detected\n");