diff --git a/arch/alpha/include/asm/processor.h b/arch/alpha/include/asm/processor.h
index 0556fda7bc6df97d4c52cab31cb90bf8bd429675..31e8dbeef10bfe4b14d80d4ca0bda898ff0161b0 100644
--- a/arch/alpha/include/asm/processor.h
+++ b/arch/alpha/include/asm/processor.h
@@ -59,7 +59,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 #define ARCH_HAS_PREFETCH
 #define ARCH_HAS_PREFETCHW
diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h
index 6c158d576355b3bb06321e26c8c53603cc68a916..d102a49ad8c5c2bdc7b0f6c49bb3cb6274a8c90e 100644
--- a/arch/arc/include/asm/processor.h
+++ b/arch/arc/include/asm/processor.h
@@ -61,7 +61,6 @@ struct task_struct;
 
 #define cpu_relax()		barrier()
 #define cpu_relax_yield()	cpu_relax()
-#define cpu_relax_lowlatency()	cpu_relax()
 
 #else
 
@@ -69,7 +68,6 @@ struct task_struct;
 	__asm__ __volatile__ (".word %0" : : "i"(CTOP_INST_SCHD_RW) : "memory")
 
 #define cpu_relax_yield()	cpu_relax()
-#define cpu_relax_lowlatency()	barrier()
 
 #endif
 
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index db660e0b4bd3ba6e7aa764f1fb89598c8e6c22c5..9e71c58bfa6fb3d543f5fcd6199317d90869ce5b 100644
--- a/arch/arm/include/asm/processor.h
+++ b/arch/arm/include/asm/processor.h
@@ -83,7 +83,6 @@ unsigned long get_wchan(struct task_struct *p);
 #endif
 
 #define cpu_relax_yield()  	              cpu_relax()
-#define cpu_relax_lowlatency()                cpu_relax()
 
 #define task_pt_regs(p) \
 	((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index 3f9b0e54dae3fc4d6f92ac74a117d0b8fa98d2d7..6132f64af68dde433772299e3b564bdbb2953794 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -150,7 +150,6 @@ static inline void cpu_relax(void)
 }
 
 #define cpu_relax_yield()                     cpu_relax()
-#define cpu_relax_lowlatency()                cpu_relax()
 
 /* Thread switching */
 extern struct task_struct *cpu_switch_to(struct task_struct *prev,
diff --git a/arch/avr32/include/asm/processor.h b/arch/avr32/include/asm/processor.h
index e412e8b68a7daf40b8fa6f1e3e2fe970b08e1ad5..ee62365ad0da3fcef387d1ebeffe30ca79b1cab9 100644
--- a/arch/avr32/include/asm/processor.h
+++ b/arch/avr32/include/asm/processor.h
@@ -93,7 +93,6 @@ extern struct avr32_cpuinfo boot_cpu_data;
 
 #define cpu_relax()		barrier()
 #define cpu_relax_yield()	cpu_relax()
-#define cpu_relax_lowlatency()        cpu_relax()
 #define cpu_sync_pipeline()	asm volatile("sub pc, -2" : : : "memory")
 
 struct cpu_context {
diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h
index 8b8704a44b7798e89bb9e0649678e2c24f27ecc5..57acfb1acfe5d48538c938dd9feff46da1518925 100644
--- a/arch/blackfin/include/asm/processor.h
+++ b/arch/blackfin/include/asm/processor.h
@@ -93,7 +93,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()    	smp_mb()
 #define cpu_relax_yield()      cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /* Get the Silicon Revision of the chip */
 static inline uint32_t __pure bfin_revid(void)
diff --git a/arch/c6x/include/asm/processor.h b/arch/c6x/include/asm/processor.h
index 914d7308bdb439e767a9cdc6f749c9b23dad70bd..1fd22e727e44f3dd065e832fab63a81c50a128f7 100644
--- a/arch/c6x/include/asm/processor.h
+++ b/arch/c6x/include/asm/processor.h
@@ -122,7 +122,6 @@ extern unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()		do { } while (0)
 #define cpu_relax_yield()             cpu_relax()
-#define cpu_relax_lowlatency()        cpu_relax()
 
 extern const struct seq_operations cpuinfo_op;
 
diff --git a/arch/cris/include/asm/processor.h b/arch/cris/include/asm/processor.h
index 01dd52ecac84805478a41ad698eb407d7212e08f..1a578417397ff76ed357ad2293036e87614fcff4 100644
--- a/arch/cris/include/asm/processor.h
+++ b/arch/cris/include/asm/processor.h
@@ -64,7 +64,6 @@ static inline void release_thread(struct task_struct *dead_task)
 
 #define cpu_relax()     barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 void default_idle(void);
 
diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h
index 4d00d65f5e5ed1b13dd7a79eddcade302ac2e6c0..c1e5f2a0ca318431eac8628adfde6a9a8ea3430a 100644
--- a/arch/frv/include/asm/processor.h
+++ b/arch/frv/include/asm/processor.h
@@ -108,7 +108,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax() barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /* data cache prefetch */
 #define ARCH_HAS_PREFETCH
diff --git a/arch/h8300/include/asm/processor.h b/arch/h8300/include/asm/processor.h
index 683a061c3cb5a299c37c7588c427c34adfd0f504..42d6053692174cf0d1e30e83f5c432c75221e804 100644
--- a/arch/h8300/include/asm/processor.h
+++ b/arch/h8300/include/asm/processor.h
@@ -128,7 +128,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()    barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency()	cpu_relax()
 
 #define HARD_RESET_NOW() ({		\
 	local_irq_disable();		\
diff --git a/arch/hexagon/include/asm/processor.h b/arch/hexagon/include/asm/processor.h
index 1558ddb9e5d7eadb401a04c44176b13b2a59a89d..5d694cccc85a84d3307ea89fe8f23ccdbe1ce579 100644
--- a/arch/hexagon/include/asm/processor.h
+++ b/arch/hexagon/include/asm/processor.h
@@ -57,7 +57,6 @@ struct thread_struct {
 
 #define cpu_relax() __vmyield()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /*
  * Decides where the kernel will search for a free chunk of vm space during
diff --git a/arch/ia64/include/asm/processor.h b/arch/ia64/include/asm/processor.h
index 4654b71dc8db3b68095922d1973e182c68164d1a..0c2c3b256f6c0f1328d7ddc3094442e16c5ce0e1 100644
--- a/arch/ia64/include/asm/processor.h
+++ b/arch/ia64/include/asm/processor.h
@@ -548,7 +548,6 @@ ia64_eoi (void)
 
 #define cpu_relax()	ia64_hint(ia64_hint_pause)
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 static inline int
 ia64_get_irr(unsigned int vector)
diff --git a/arch/m32r/include/asm/processor.h b/arch/m32r/include/asm/processor.h
index b2620370320d296d7c7bbd5f8db19740f24fc5cb..9b83a13290fc3bf37e8044f7c448231f30879dfa 100644
--- a/arch/m32r/include/asm/processor.h
+++ b/arch/m32r/include/asm/processor.h
@@ -134,6 +134,5 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 #endif /* _ASM_M32R_PROCESSOR_H */
diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h
index 13e07ae6786d5a48ce01549e78bc198095210238..b0d044224ce5129f22a7788abd7f3815ca9db590 100644
--- a/arch/m68k/include/asm/processor.h
+++ b/arch/m68k/include/asm/processor.h
@@ -157,6 +157,5 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 #endif
diff --git a/arch/metag/include/asm/processor.h b/arch/metag/include/asm/processor.h
index 61d6e2722893ea41fc8de58d847daa6775e45059..ee302a637f24d95b6213ff5e0859ba88f20d3af2 100644
--- a/arch/metag/include/asm/processor.h
+++ b/arch/metag/include/asm/processor.h
@@ -153,7 +153,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()     barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency()  cpu_relax()
 
 extern void setup_priv(void);
 
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index fd7dd11c730af294c867a51a28abfdd1c3ed746e..08ec1f725b7fad7b35eb23a032cd0074f515004b 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -23,7 +23,6 @@ extern const struct seq_operations cpuinfo_op;
 
 # define cpu_relax()		barrier()
 # define cpu_relax_yield() cpu_relax()
-# define cpu_relax_lowlatency()	cpu_relax()
 
 #define task_pt_regs(tsk) \
 		(((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 9a656f6afc7cc74b62c2358630cb34eb5840ad70..8ea95e77ec9d7981595d0b0b66bc15991a784d89 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -390,7 +390,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /*
  * Return_address is a replacement for __builtin_return_address(count)
diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h
index 89f63d1720ee9ebf345fab5026f540ce2bb8f2d1..d11397bc9429587ff5fb28644d7c4d7d7d76d817 100644
--- a/arch/mn10300/include/asm/processor.h
+++ b/arch/mn10300/include/asm/processor.h
@@ -70,7 +70,6 @@ extern void dodgy_tsc(void);
 
 #define cpu_relax() barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /*
  * User space process size: 1.75GB (default).
diff --git a/arch/nios2/include/asm/processor.h b/arch/nios2/include/asm/processor.h
index 303e5932a733c5236bdb5fc0146ceaa9663b36ef..d32c17669123a7e9c24a85ab4141b2595d36de5e 100644
--- a/arch/nios2/include/asm/processor.h
+++ b/arch/nios2/include/asm/processor.h
@@ -89,7 +89,6 @@ extern unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency()  cpu_relax()
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/arch/openrisc/include/asm/processor.h b/arch/openrisc/include/asm/processor.h
index 6ecfc2ab28e410a538ab58727fcd75d980818aa7..7f47fc7b7eaed7cbedd14bd9f0fb0dd4ac3713ae 100644
--- a/arch/openrisc/include/asm/processor.h
+++ b/arch/openrisc/include/asm/processor.h
@@ -93,7 +93,6 @@ extern unsigned long thread_saved_pc(struct task_struct *t);
 
 #define cpu_relax()     barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_OPENRISC_PROCESSOR_H */
diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h
index ea2ff9febffd971961aa5bb9f9fc423b2a56d15e..a4a07f4f7c20ab7727193836e42217b8e6c01e50 100644
--- a/arch/parisc/include/asm/processor.h
+++ b/arch/parisc/include/asm/processor.h
@@ -310,7 +310,6 @@ extern unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /*
  * parisc_requires_coherency() is used to identify the combined VIPT/PIPT
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 908fa7cb3fb3f76790a353a70c4053e981e55c49..5684e68724737546cc5acd28d46556848ae35d57 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -405,7 +405,6 @@ static inline unsigned long __pack_fe01(unsigned int fpmode)
 #endif
 
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /* Check that a certain kernel stack pointer is valid in task_struct p */
 int validate_sp(unsigned long sp, struct task_struct *p,
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 79343e37b4558a50b1bffb15ab0f52b263444675..9e32f25bdea335b1c57f5e87530d19f210b17196 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -237,7 +237,6 @@ static inline unsigned short stap(void)
 void cpu_relax_yield(void);
 
 #define cpu_relax() barrier()
-#define cpu_relax_lowlatency()  barrier()
 
 #define ECAG_CACHE_ATTRIBUTE	0
 #define ECAG_CPU_ATTRIBUTE	1
diff --git a/arch/score/include/asm/processor.h b/arch/score/include/asm/processor.h
index e8e87b4d7971cfbc06b216cb8d09dd6db3f9205e..a1e97c063ed49aae91619708e9592abb99d3020e 100644
--- a/arch/score/include/asm/processor.h
+++ b/arch/score/include/asm/processor.h
@@ -25,7 +25,6 @@ extern unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()		barrier()
 #define cpu_relax_yield()	cpu_relax()
-#define cpu_relax_lowlatency()        cpu_relax()
 #define release_thread(thread)	do {} while (0)
 
 /*
diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h
index 099a99105e1c7f46a1b51904c892c112f415929e..9454ff1ad0d99947a5fd8d26d78663625481b031 100644
--- a/arch/sh/include/asm/processor.h
+++ b/arch/sh/include/asm/processor.h
@@ -98,7 +98,6 @@ extern struct sh_cpuinfo cpu_data[];
 #define cpu_sleep()	__asm__ __volatile__ ("sleep" : : : "memory")
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 void default_idle(void);
 void stop_this_cpu(void *);
diff --git a/arch/sparc/include/asm/processor_32.h b/arch/sparc/include/asm/processor_32.h
index 50e908a3c6519e6790a72abd11ec5b79ab50dafd..fc32b731148163ff7b90da48d55068cc5e1ab0e8 100644
--- a/arch/sparc/include/asm/processor_32.h
+++ b/arch/sparc/include/asm/processor_32.h
@@ -120,7 +120,6 @@ int do_mathemu(struct pt_regs *regs, struct task_struct *fpt);
 
 #define cpu_relax()	barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 extern void (*sparc_idle)(void);
 
diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h
index 3e8fac724f18c1ac1b8c96152976bc2d081c75ae..12787dfeb11caec294d549802c26266d901bbc63 100644
--- a/arch/sparc/include/asm/processor_64.h
+++ b/arch/sparc/include/asm/processor_64.h
@@ -217,7 +217,6 @@ unsigned long get_wchan(struct task_struct *task);
 				     ".previous"			\
 				     ::: "memory")
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /* Prefetch support.  This is tuned for UltraSPARC-III and later.
  * UltraSPARC-I will treat these as nops, and UltraSPARC-II has
diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h
index 91a39a50520d42c09f84dd916b57571e7b373476..c1c228b16f7fafec7bcbb1e6cef1346e4355c619 100644
--- a/arch/tile/include/asm/processor.h
+++ b/arch/tile/include/asm/processor.h
@@ -265,7 +265,6 @@ static inline void cpu_relax(void)
 }
 
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /* Info on this processor (see fs/proc/cpuinfo.c) */
 struct seq_operations;
diff --git a/arch/unicore32/include/asm/processor.h b/arch/unicore32/include/asm/processor.h
index fc54d5d50419234f487919c8175e935461027b09..eeefe7c529eb30227ca077966c6a0ebaebcf7768 100644
--- a/arch/unicore32/include/asm/processor.h
+++ b/arch/unicore32/include/asm/processor.h
@@ -72,7 +72,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()			barrier()
 #define cpu_relax_yield()		cpu_relax()
-#define cpu_relax_lowlatency()                cpu_relax()
 
 #define task_pt_regs(p) \
 	((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 44adadab44d6f112e96b73c0f9bd9351f91a7370..7513c996f673c0d8fd5908e307c8bd642e37b0ff 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -589,7 +589,6 @@ static __always_inline void cpu_relax(void)
 }
 
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /* Stop speculative execution and prefetching of modified code. */
 static inline void sync_core(void)
diff --git a/arch/x86/um/asm/processor.h b/arch/x86/um/asm/processor.h
index 01597afa8888e0f6a083714aaa284dd7292c62ef..b4bd63b22b7fe5a7b41ba861f39cb15658c977d5 100644
--- a/arch/x86/um/asm/processor.h
+++ b/arch/x86/um/asm/processor.h
@@ -27,7 +27,6 @@ static inline void rep_nop(void)
 
 #define cpu_relax()		rep_nop()
 #define cpu_relax_yield()	cpu_relax()
-#define cpu_relax_lowlatency()	cpu_relax()
 
 #define task_pt_regs(t) (&(t)->thread.regs)
 
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index fe14dc2b394a20490d95815b21eea75bb9a372ad..7d8d6bececfcc2d3d2adf1b1ee26ac4207043f09 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -207,7 +207,6 @@ extern unsigned long get_wchan(struct task_struct *p);
 
 #define cpu_relax()  barrier()
 #define cpu_relax_yield() cpu_relax()
-#define cpu_relax_lowlatency() cpu_relax()
 
 /* Special register access. */