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 <tim.c.chen@linux.intel.com>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: AswinChandramouleeswaran <aswin@hp.com>
Cc: George Spelvin <linux@horizon.com>
Cc: Rik vanRiel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: MichelLespinasse <walken@google.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alex Shi <alex.shi@linaro.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Figo.zhang" <figo1802@gmail.com>
Cc: "Paul E.McKenney" <paulmck@linux.vnet.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Waiman Long <waiman.long@hp.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew R Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
generic-y += clkdev.h
generic-y += hash.h
+generic-y += mcs_spinlock.h
generic-y += preempt.h
generic-y += trace_clock.h
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
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
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
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
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
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
genhdr-y += unistd_x32.h
generic-y += clkdev.h
+generic-y += mcs_spinlock.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
--- /dev/null
+#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 */
#ifndef __LINUX_MCS_SPINLOCK_H
#define __LINUX_MCS_SPINLOCK_H
+#include <asm/mcs_spinlock.h>
+
struct mcs_spinlock {
struct mcs_spinlock *next;
int locked; /* 1 if lock acquired */
projects / firefly-linux-kernel-4.4.55.git / commitdiff