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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-24 14:53:42 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-24 14:53:42 -0400
commit5129df03d0c44b2d5a5f9d7d52f3b079706b9a8f (patch)
tree799e309a7db032cb7abe9f0fa910c2989c3fdab5 /arch/x86
parent4d429480352c63db2228489f0db9fd381cdc3c9c (diff)
parent6988f20fe04e9ef3aea488cb8ab57fbeb78e12f0 (diff)
Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: Unify input section names percpu: Avoid extra NOP in percpu_cmpxchg16b_double percpu: Cast away printk format warning percpu: Always align percpu output section to PAGE_SIZE Fix up fairly trivial conflict in arch/x86/include/asm/percpu.h as per Tejun
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/percpu.h7
-rw-r--r--arch/x86/kernel/vmlinux.lds.S2
2 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 53278b0dfdf6..a0a9779084d1 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -509,6 +509,11 @@ do { \
509 * it in software. The address used in the cmpxchg16 instruction must be 509 * it in software. The address used in the cmpxchg16 instruction must be
510 * aligned to a 16 byte boundary. 510 * aligned to a 16 byte boundary.
511 */ 511 */
512#ifdef CONFIG_SMP
513#define CMPXCHG16B_EMU_CALL "call this_cpu_cmpxchg16b_emu\n\t" ASM_NOP3
514#else
515#define CMPXCHG16B_EMU_CALL "call this_cpu_cmpxchg16b_emu\n\t" ASM_NOP2
516#endif
512#define percpu_cmpxchg16b_double(pcp1, o1, o2, n1, n2) \ 517#define percpu_cmpxchg16b_double(pcp1, o1, o2, n1, n2) \
513({ \ 518({ \
514 char __ret; \ 519 char __ret; \
@@ -517,7 +522,7 @@ do { \
517 typeof(o2) __o2 = o2; \ 522 typeof(o2) __o2 = o2; \
518 typeof(o2) __n2 = n2; \ 523 typeof(o2) __n2 = n2; \
519 typeof(o2) __dummy; \ 524 typeof(o2) __dummy; \
520 alternative_io("call this_cpu_cmpxchg16b_emu\n\t" ASM_NOP4, \ 525 alternative_io(CMPXCHG16B_EMU_CALL, \
521 "cmpxchg16b " __percpu_prefix "(%%rsi)\n\tsetz %0\n\t", \ 526 "cmpxchg16b " __percpu_prefix "(%%rsi)\n\tsetz %0\n\t", \
522 X86_FEATURE_CX16, \ 527 X86_FEATURE_CX16, \
523 ASM_OUTPUT2("=a"(__ret), "=d"(__dummy)), \ 528 ASM_OUTPUT2("=a"(__ret), "=d"(__dummy)), \
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 49927a863cc1..61682f0ac264 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -326,7 +326,7 @@ SECTIONS
326 } 326 }
327 327
328#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP) 328#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
329 PERCPU(INTERNODE_CACHE_BYTES, PAGE_SIZE) 329 PERCPU_SECTION(INTERNODE_CACHE_BYTES)
330#endif 330#endif
331 331
332 . = ALIGN(PAGE_SIZE); 332 . = ALIGN(PAGE_SIZE);