From ddf1d169c0a489d498c1799a7043904a43b0c159 Mon Sep 17 00:00:00 2001 From: Tim Chen Date: Tue, 21 Jan 2014 15:36:22 -0800 Subject: [PATCH] locking/mcs: Allow architecture specific asm files to be used for contended case This patch allows each architecture to add its specific assembly optimized arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for MCS lock and unlock functions. Signed-off-by: Tim Chen Cc: Scott J Norton Cc: Raghavendra K T Cc: AswinChandramouleeswaran Cc: George Spelvin Cc: Rik vanRiel Cc: Andrea Arcangeli Cc: MichelLespinasse Cc: Peter Hurley Cc: Andi Kleen Cc: Alex Shi Cc: Dave Hansen Cc: Tim Chen Cc: Arnd Bergmann Cc: "Figo.zhang" Cc: "Paul E.McKenney" Cc: "H. Peter Anvin" Cc: Davidlohr Bueso Cc: Waiman Long Cc: Ingo Molnar Cc: Will Deacon Cc: Andrew Morton Cc: Linus Torvalds Cc: Matthew R Wilcox Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK Signed-off-by: Ingo Molnar --- arch/alpha/include/asm/Kbuild | 1 + arch/arc/include/asm/Kbuild | 1 + arch/arm/include/asm/Kbuild | 1 + arch/arm64/include/asm/Kbuild | 1 + arch/avr32/include/asm/Kbuild | 1 + arch/blackfin/include/asm/Kbuild | 1 + arch/c6x/include/asm/Kbuild | 1 + arch/cris/include/asm/Kbuild | 1 + arch/frv/include/asm/Kbuild | 1 + arch/hexagon/include/asm/Kbuild | 1 + arch/ia64/include/asm/Kbuild | 1 + arch/m32r/include/asm/Kbuild | 1 + arch/m68k/include/asm/Kbuild | 1 + arch/metag/include/asm/Kbuild | 1 + arch/microblaze/include/asm/Kbuild | 1 + arch/mips/include/asm/Kbuild | 1 + arch/mn10300/include/asm/Kbuild | 1 + arch/openrisc/include/asm/Kbuild | 1 + arch/parisc/include/asm/Kbuild | 1 + arch/powerpc/include/asm/Kbuild | 1 + arch/s390/include/asm/Kbuild | 1 + arch/score/include/asm/Kbuild | 1 + arch/sh/include/asm/Kbuild | 1 + arch/sparc/include/asm/Kbuild | 1 + arch/tile/include/asm/Kbuild | 1 + arch/um/include/asm/Kbuild | 1 + arch/unicore32/include/asm/Kbuild | 1 + arch/x86/include/asm/Kbuild | 1 + arch/xtensa/include/asm/Kbuild | 1 + include/asm-generic/mcs_spinlock.h | 13 +++++++++++++ include/linux/mcs_spinlock.h | 2 ++ 31 files changed, 44 insertions(+) create mode 100644 include/asm-generic/mcs_spinlock.h diff --git a/arch/alpha/include/asm/Kbuild b/arch/alpha/include/asm/Kbuild index 55a2b0395d48..7736f426ff3b 100644 --- a/arch/alpha/include/asm/Kbuild +++ b/arch/alpha/include/asm/Kbuild @@ -3,5 +3,6 @@ generic-y += clkdev.h generic-y += exec.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += trace_clock.h diff --git a/arch/arc/include/asm/Kbuild b/arch/arc/include/asm/Kbuild index 54ceb91c7ce0..e76fd79f32b0 100644 --- a/arch/arc/include/asm/Kbuild +++ b/arch/arc/include/asm/Kbuild @@ -22,6 +22,7 @@ generic-y += kmap_types.h generic-y += kvm_para.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += msgbuf.h generic-y += param.h diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild index 3b2092049b51..23e728ecf8ab 100644 --- a/arch/arm/include/asm/Kbuild +++ b/arch/arm/include/asm/Kbuild @@ -14,6 +14,7 @@ generic-y += irq_regs.h generic-y += kdebug.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += msgbuf.h generic-y += param.h generic-y += parport.h diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild index 54038befa0a4..3bdfdda70567 100644 --- a/arch/arm64/include/asm/Kbuild +++ b/arch/arm64/include/asm/Kbuild @@ -23,6 +23,7 @@ generic-y += kmap_types.h generic-y += kvm_para.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += msgbuf.h generic-y += mutex.h diff --git a/arch/avr32/include/asm/Kbuild b/arch/avr32/include/asm/Kbuild index 064ca3c058ff..8b398ff96974 100644 --- a/arch/avr32/include/asm/Kbuild +++ b/arch/avr32/include/asm/Kbuild @@ -11,6 +11,7 @@ generic-y += hash.h generic-y += irq_regs.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += param.h generic-y += percpu.h generic-y += preempt.h diff --git a/arch/blackfin/include/asm/Kbuild b/arch/blackfin/include/asm/Kbuild index ca30a3dc47e7..0d93b9a79ca9 100644 --- a/arch/blackfin/include/asm/Kbuild +++ b/arch/blackfin/include/asm/Kbuild @@ -20,6 +20,7 @@ generic-y += kmap_types.h generic-y += kvm_para.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += msgbuf.h generic-y += mutex.h diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild index dea0671524a1..8dbdce8421b0 100644 --- a/arch/c6x/include/asm/Kbuild +++ b/arch/c6x/include/asm/Kbuild @@ -25,6 +25,7 @@ generic-y += irq_regs.h generic-y += kdebug.h generic-y += kmap_types.h generic-y += local.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += mmu.h generic-y += mmu_context.h diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild index 7f8d1b174a34..056027f38351 100644 --- a/arch/cris/include/asm/Kbuild +++ b/arch/cris/include/asm/Kbuild @@ -9,6 +9,7 @@ generic-y += exec.h generic-y += hash.h generic-y += kvm_para.h generic-y += linkage.h +generic-y += mcs_spinlock.h generic-y += module.h generic-y += preempt.h generic-y += trace_clock.h diff --git a/arch/frv/include/asm/Kbuild b/arch/frv/include/asm/Kbuild index 93428d035cfb..babb9338ebf8 100644 --- a/arch/frv/include/asm/Kbuild +++ b/arch/frv/include/asm/Kbuild @@ -2,5 +2,6 @@ generic-y += clkdev.h generic-y += exec.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += trace_clock.h diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild index 9f0eda48643a..eadcc118f950 100644 --- a/arch/hexagon/include/asm/Kbuild +++ b/arch/hexagon/include/asm/Kbuild @@ -27,6 +27,7 @@ generic-y += kdebug.h generic-y += kmap_types.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += msgbuf.h generic-y += pci.h diff --git a/arch/ia64/include/asm/Kbuild b/arch/ia64/include/asm/Kbuild index 81ebef7f1a87..0da4aa2602ae 100644 --- a/arch/ia64/include/asm/Kbuild +++ b/arch/ia64/include/asm/Kbuild @@ -3,6 +3,7 @@ generic-y += clkdev.h generic-y += exec.h generic-y += hash.h generic-y += kvm_para.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += trace_clock.h generic-y += vtime.h diff --git a/arch/m32r/include/asm/Kbuild b/arch/m32r/include/asm/Kbuild index 87042215b543..5825a35b2c56 100644 --- a/arch/m32r/include/asm/Kbuild +++ b/arch/m32r/include/asm/Kbuild @@ -2,6 +2,7 @@ generic-y += clkdev.h generic-y += exec.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += module.h generic-y += preempt.h generic-y += trace_clock.h diff --git a/arch/m68k/include/asm/Kbuild b/arch/m68k/include/asm/Kbuild index f44ac8f9536a..86b4c178cc75 100644 --- a/arch/m68k/include/asm/Kbuild +++ b/arch/m68k/include/asm/Kbuild @@ -16,6 +16,7 @@ generic-y += kmap_types.h generic-y += kvm_para.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += mutex.h generic-y += percpu.h diff --git a/arch/metag/include/asm/Kbuild b/arch/metag/include/asm/Kbuild index ac22144e92a3..c29ead89a317 100644 --- a/arch/metag/include/asm/Kbuild +++ b/arch/metag/include/asm/Kbuild @@ -24,6 +24,7 @@ generic-y += kmap_types.h generic-y += kvm_para.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += msgbuf.h generic-y += mutex.h generic-y += param.h diff --git a/arch/microblaze/include/asm/Kbuild b/arch/microblaze/include/asm/Kbuild index 4b5f12259d81..1f590ab8f323 100644 --- a/arch/microblaze/include/asm/Kbuild +++ b/arch/microblaze/include/asm/Kbuild @@ -3,6 +3,7 @@ generic-y += barrier.h generic-y += clkdev.h generic-y += exec.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += syscalls.h generic-y += trace_clock.h diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild index 82ee17a68ae0..05439187891d 100644 --- a/arch/mips/include/asm/Kbuild +++ b/arch/mips/include/asm/Kbuild @@ -4,6 +4,7 @@ generic-y += current.h generic-y += emergency-restart.h generic-y += hash.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mutex.h generic-y += parport.h generic-y += percpu.h diff --git a/arch/mn10300/include/asm/Kbuild b/arch/mn10300/include/asm/Kbuild index da3b2f50c07e..cbc6b9bf45da 100644 --- a/arch/mn10300/include/asm/Kbuild +++ b/arch/mn10300/include/asm/Kbuild @@ -3,5 +3,6 @@ generic-y += barrier.h generic-y += clkdev.h generic-y += exec.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += trace_clock.h diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild index f62a67a15055..480af0d9c2f5 100644 --- a/arch/openrisc/include/asm/Kbuild +++ b/arch/openrisc/include/asm/Kbuild @@ -35,6 +35,7 @@ generic-y += kdebug.h generic-y += kmap_types.h generic-y += kvm_para.h generic-y += local.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += module.h generic-y += msgbuf.h diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild index 958b79aac24f..ecf25e6678ad 100644 --- a/arch/parisc/include/asm/Kbuild +++ b/arch/parisc/include/asm/Kbuild @@ -14,6 +14,7 @@ generic-y += kdebug.h generic-y += kvm_para.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mutex.h generic-y += param.h generic-y += percpu.h diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild index b618c416d3d9..3fb1bc432f4f 100644 --- a/arch/powerpc/include/asm/Kbuild +++ b/arch/powerpc/include/asm/Kbuild @@ -1,6 +1,7 @@ generic-y += clkdev.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += rwsem.h generic-y += trace_clock.h diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild index 482f492f0834..57892a8a9055 100644 --- a/arch/s390/include/asm/Kbuild +++ b/arch/s390/include/asm/Kbuild @@ -2,5 +2,6 @@ generic-y += clkdev.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += trace_clock.h diff --git a/arch/score/include/asm/Kbuild b/arch/score/include/asm/Kbuild index e92319fb146d..4630cf217b5b 100644 --- a/arch/score/include/asm/Kbuild +++ b/arch/score/include/asm/Kbuild @@ -5,6 +5,7 @@ header-y += generic-y += barrier.h generic-y += clkdev.h generic-y += hash.h +generic-y += mcs_spinlock.h generic-y += preempt.h generic-y += trace_clock.h generic-y += xor.h diff --git a/arch/sh/include/asm/Kbuild b/arch/sh/include/asm/Kbuild index 85c214e456f9..c19e47dacb31 100644 --- a/arch/sh/include/asm/Kbuild +++ b/arch/sh/include/asm/Kbuild @@ -15,6 +15,7 @@ generic-y += irq_regs.h generic-y += kvm_para.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += msgbuf.h generic-y += param.h diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild index 82150287bfa4..a45821818003 100644 --- a/arch/sparc/include/asm/Kbuild +++ b/arch/sparc/include/asm/Kbuild @@ -11,6 +11,7 @@ generic-y += irq_regs.h generic-y += linkage.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += module.h generic-y += mutex.h generic-y += preempt.h diff --git a/arch/tile/include/asm/Kbuild b/arch/tile/include/asm/Kbuild index e0b1ed967737..0aa5675e7025 100644 --- a/arch/tile/include/asm/Kbuild +++ b/arch/tile/include/asm/Kbuild @@ -19,6 +19,7 @@ generic-y += ipcbuf.h generic-y += irq_regs.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += msgbuf.h generic-y += mutex.h generic-y += param.h diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild index 215e05d8d4b8..a5e4b6068213 100644 --- a/arch/um/include/asm/Kbuild +++ b/arch/um/include/asm/Kbuild @@ -15,6 +15,7 @@ generic-y += hw_irq.h generic-y += io.h generic-y += irq_regs.h generic-y += kdebug.h +generic-y += mcs_spinlock.h generic-y += mutex.h generic-y += param.h generic-y += pci.h diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild index ad2c737a9cab..1e5fb872a4aa 100644 --- a/arch/unicore32/include/asm/Kbuild +++ b/arch/unicore32/include/asm/Kbuild @@ -25,6 +25,7 @@ generic-y += irq_regs.h generic-y += kdebug.h generic-y += kmap_types.h generic-y += local.h +generic-y += mcs_spinlock.h generic-y += mman.h generic-y += module.h generic-y += msgbuf.h diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild index 7f669853317a..a8fee078b92f 100644 --- a/arch/x86/include/asm/Kbuild +++ b/arch/x86/include/asm/Kbuild @@ -5,3 +5,4 @@ genhdr-y += unistd_64.h genhdr-y += unistd_x32.h generic-y += clkdev.h +generic-y += mcs_spinlock.h diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild index 223280d8e611..c3d20ba6eb86 100644 --- a/arch/xtensa/include/asm/Kbuild +++ b/arch/xtensa/include/asm/Kbuild @@ -18,6 +18,7 @@ generic-y += kvm_para.h generic-y += linkage.h generic-y += local.h generic-y += local64.h +generic-y += mcs_spinlock.h generic-y += percpu.h generic-y += preempt.h generic-y += resource.h diff --git a/include/asm-generic/mcs_spinlock.h b/include/asm-generic/mcs_spinlock.h new file mode 100644 index 000000000000..10cd4ffc6ba2 --- /dev/null +++ b/include/asm-generic/mcs_spinlock.h @@ -0,0 +1,13 @@ +#ifndef __ASM_MCS_SPINLOCK_H +#define __ASM_MCS_SPINLOCK_H + +/* + * Architectures can define their own: + * + * arch_mcs_spin_lock_contended(l) + * arch_mcs_spin_unlock_contended(l) + * + * See kernel/locking/mcs_spinlock.c. + */ + +#endif /* __ASM_MCS_SPINLOCK_H */ diff --git a/include/linux/mcs_spinlock.h b/include/linux/mcs_spinlock.h index e9a4d74c63dc..f2a5c6360083 100644 --- a/include/linux/mcs_spinlock.h +++ b/include/linux/mcs_spinlock.h @@ -12,6 +12,8 @@ #ifndef __LINUX_MCS_SPINLOCK_H #define __LINUX_MCS_SPINLOCK_H +#include + struct mcs_spinlock { struct mcs_spinlock *next; int locked; /* 1 if lock acquired */ -- GitLab