The patch titled
Subject: mm,x86,um: move CMPXCHG_DOUBLE config option
has been added to the -mm tree. Its filename is
mmx86um-move-cmpxchg_double-config-option.patch
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See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Subject: mm,x86,um: move CMPXCHG_DOUBLE config option
Move CMPXCHG_DOUBLE and rename it to HAVE_CMPXCHG_DOUBLE so architectures
can simply select the option if it is supported.
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/Kconfig | 3 +++
arch/x86/Kconfig | 1 +
arch/x86/Kconfig.cpu | 3 ---
arch/x86/um/Kconfig | 4 ----
mm/slub.c | 9 ++++++---
5 files changed, 10 insertions(+), 10 deletions(-)
diff -puN arch/Kconfig~mmx86um-move-cmpxchg_double-config-option arch/Kconfig
--- a/arch/Kconfig~mmx86um-move-cmpxchg_double-config-option
+++ a/arch/Kconfig
@@ -196,4 +196,7 @@ config HAVE_ALIGNED_STRUCT_PAGE
config HAVE_CMPXCHG_LOCAL
bool
+config HAVE_CMPXCHG_DOUBLE
+ bool
+
source "kernel/gcov/Kconfig"
diff -puN arch/x86/Kconfig~mmx86um-move-cmpxchg_double-config-option arch/x86/Kconfig
--- a/arch/x86/Kconfig~mmx86um-move-cmpxchg_double-config-option
+++ a/arch/x86/Kconfig
@@ -78,6 +78,7 @@ config X86
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select HAVE_ALIGNED_STRUCT_PAGE if SLUB && !M386
select HAVE_CMPXCHG_LOCAL if !M386
+ select HAVE_CMPXCHG_DOUBLE
config INSTRUCTION_DECODER
def_bool (KPROBES || PERF_EVENTS)
diff -puN arch/x86/Kconfig.cpu~mmx86um-move-cmpxchg_double-config-option arch/x86/Kconfig.cpu
--- a/arch/x86/Kconfig.cpu~mmx86um-move-cmpxchg_double-config-option
+++ a/arch/x86/Kconfig.cpu
@@ -309,9 +309,6 @@ config X86_INTERNODE_CACHE_SHIFT
config X86_CMPXCHG
def_bool X86_64 || (X86_32 && !M386)
-config CMPXCHG_DOUBLE
- def_bool y
-
config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || MPSC
diff -puN arch/x86/um/Kconfig~mmx86um-move-cmpxchg_double-config-option arch/x86/um/Kconfig
--- a/arch/x86/um/Kconfig~mmx86um-move-cmpxchg_double-config-option
+++ a/arch/x86/um/Kconfig
@@ -6,10 +6,6 @@ menu "UML-specific options"
menu "Host processor type and features"
-config CMPXCHG_DOUBLE
- bool
- default n
-
source "arch/x86/Kconfig.cpu"
endmenu
diff -puN mm/slub.c~mmx86um-move-cmpxchg_double-config-option mm/slub.c
--- a/mm/slub.c~mmx86um-move-cmpxchg_double-config-option
+++ a/mm/slub.c
@@ -366,7 +366,8 @@ static inline bool __cmpxchg_double_slab
const char *n)
{
VM_BUG_ON(!irqs_disabled());
-#if defined(CONFIG_CMPXCHG_DOUBLE) && defined(CONFIG_HAVE_ALIGNED_STRUCT_PAGE)
+#if defined(CONFIG_HAVE_CMPXCHG_DOUBLE) && \
+ defined(CONFIG_HAVE_ALIGNED_STRUCT_PAGE)
if (s->flags & __CMPXCHG_DOUBLE) {
if (cmpxchg_double(&page->freelist,
freelist_old, counters_old,
@@ -400,7 +401,8 @@ static inline bool cmpxchg_double_slab(s
void *freelist_new, unsigned long counters_new,
const char *n)
{
-#if defined(CONFIG_CMPXCHG_DOUBLE) && defined(CONFIG_HAVE_ALIGNED_STRUCT_PAGE)
+#if defined(CONFIG_HAVE_CMPXCHG_DOUBLE) && \
+ defined(CONFIG_HAVE_ALIGNED_STRUCT_PAGE)
if (s->flags & __CMPXCHG_DOUBLE) {
if (cmpxchg_double(&page->freelist,
freelist_old, counters_old,
@@ -2990,7 +2992,8 @@ static int kmem_cache_open(struct kmem_c
}
}
-#if defined(CONFIG_CMPXCHG_DOUBLE) && defined(CONFIG_HAVE_ALIGNED_STRUCT_PAGE)
+#if defined(CONFIG_HAVE_CMPXCHG_DOUBLE) && \
+ defined(CONFIG_HAVE_ALIGNED_STRUCT_PAGE)
if (system_has_cmpxchg_double() && (s->flags & SLAB_DEBUG_FLAGS) == 0)
/* Enable fast mode */
s->flags |= __CMPXCHG_DOUBLE;
_
Subject: Subject: mm,x86,um: move CMPXCHG_DOUBLE config option
Patches currently in -mm which might be from heiko.carstens@xxxxxxxxxx are
linux-next.patch
consolidate-config_debug_strict_user_copy_checks.patch
treewide-remove-useless-noret_type-macro-and-uses.patch
treewide-convert-uses-of-attrib_noreturn-to-__noreturn.patch
mmslubx86-decouple-size-of-struct-page-from-config_cmpxchg_local.patch
mmx86um-move-cmpxchg_local-config-option.patch
mmx86um-move-cmpxchg_double-config-option.patch
kdump-fix-crash_kexec-smp_send_stop-race-in-panic.patch
kdump-add-udev-events-for-memory-online-offline.patch
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