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HFI1: port to IFS 10.7 rpv1 and support queued_spin_lock in Linux 3.10.0-693.11.6

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This commit is contained in:
Balazs Gerofi
2018-04-09 22:21:45 +09:00
parent af22ce62d2
commit 8164b63fc2
11 changed files with 110 additions and 75 deletions
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38
kernel/include/hfi1/ihk_hfi1_common.h
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@@ -88,19 +88,39 @@
#define atomic_t ihk_atomic_t
typedef ihk_spinlock_t spinlock_t;
/* From: kernel-xppsl_1.5.2/include/linux/irqsave.h */
#define spin_lock_irqsave(lock, flags) \
do { \
flags = ihk_mc_spinlock_lock(lock); \
/*
* Linux queued_spin_lock compatible spin_lock, without the queue.
* We use _Q_PENDING_VAL as locked value to make sure no Linux cores
* enter the queue phase in queued_spin_lock_slowpath().
*/
#define _Q_LOCKED_OFFSET 0
#define _Q_LOCKED_BITS 8
#define _Q_PENDING_OFFSET (_Q_LOCKED_OFFSET + _Q_LOCKED_BITS)
#define _Q_PENDING_VAL (1U << _Q_PENDING_OFFSET)
#define linux_spin_lock_irqsave(lock, flags) \
do { \
uint32_t val; \
flags = cpu_disable_interrupt_save(); \
do { \
val = atomic_cmpxchg4( \
(unsigned int *)lock, 0, \
_Q_PENDING_VAL); \
if (val == 0) \
break; \
cpu_pause(); \
} \
while (1); \
} while (0)
#define spin_unlock_irqrestore(lock, flags) \
do { \
ihk_mc_spinlock_unlock(lock, flags); \
#define linux_spin_unlock_irqrestore(lock, flags) \
do { \
ihk_atomic_set((ihk_atomic_t *)lock, 0); \
cpu_restore_interrupt(flags); \
} while (0)
#define spin_lock ihk_mc_spinlock_lock_noirq
#define spin_unlock ihk_mc_spinlock_unlock_noirq
/*****************************************************/
#define ____cacheline_aligned_in_smp __attribute__((aligned(64)))