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Import CK as of commit 08813496570879fbcc2adcdd9ddc0a054361bfde, mostly

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to avoid using lwsync on ppc32.
This commit is contained in:
Olivier Houchard 2018-08-09 12:07:37 +00:00
parent 5ffae39d54
commit 449aa8c641
3 changed files with 32 additions and 20 deletions
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32
include/gcc/ppc/ck_pr.h
View File

@ -67,21 +67,29 @@ ck_pr_stall(void)
__asm__ __volatile__(I ::: "memory"); \
}
CK_PR_FENCE(atomic, "lwsync")
CK_PR_FENCE(atomic_store, "lwsync")
#ifdef CK_MD_PPC32_LWSYNC
#define CK_PR_LWSYNCOP "lwsync"
#else /* CK_MD_PPC32_LWSYNC_DISABLE */
#define CK_PR_LWSYNCOP "sync"
#endif
CK_PR_FENCE(atomic, CK_PR_LWSYNCOP)
CK_PR_FENCE(atomic_store, CK_PR_LWSYNCOP)
CK_PR_FENCE(atomic_load, "sync")
CK_PR_FENCE(store_atomic, "lwsync")
CK_PR_FENCE(load_atomic, "lwsync")
CK_PR_FENCE(store, "lwsync")
CK_PR_FENCE(store_atomic, CK_PR_LWSYNCOP)
CK_PR_FENCE(load_atomic, CK_PR_LWSYNCOP)
CK_PR_FENCE(store, CK_PR_LWSYNCOP)
CK_PR_FENCE(store_load, "sync")
CK_PR_FENCE(load, "lwsync")
CK_PR_FENCE(load_store, "lwsync")
CK_PR_FENCE(load, CK_PR_LWSYNCOP)
CK_PR_FENCE(load_store, CK_PR_LWSYNCOP)
CK_PR_FENCE(memory, "sync")
CK_PR_FENCE(acquire, "lwsync")
CK_PR_FENCE(release, "lwsync")
CK_PR_FENCE(acqrel, "lwsync")
CK_PR_FENCE(lock, "lwsync")
CK_PR_FENCE(unlock, "lwsync")
CK_PR_FENCE(acquire, CK_PR_LWSYNCOP)
CK_PR_FENCE(release, CK_PR_LWSYNCOP)
CK_PR_FENCE(acqrel, CK_PR_LWSYNCOP)
CK_PR_FENCE(lock, CK_PR_LWSYNCOP)
CK_PR_FENCE(unlock, CK_PR_LWSYNCOP)
#undef CK_PR_LWSYNCOP
#undef CK_PR_FENCE

12
include/spinlock/hclh.h
View File

@ -81,6 +81,8 @@ ck_spinlock_hclh_lock(struct ck_spinlock_hclh **glob_queue,
thread->wait = true;
thread->splice = false;
thread->cluster_id = (*local_queue)->cluster_id;
/* Make sure previous->previous doesn't appear to be NULL */
thread->previous = *local_queue;
/* Serialize with respect to update of local queue. */
ck_pr_fence_store_atomic();
@ -91,13 +93,15 @@ ck_spinlock_hclh_lock(struct ck_spinlock_hclh **glob_queue,
/* Wait until previous thread from the local queue is done with lock. */
ck_pr_fence_load();
if (previous->previous != NULL &&
previous->cluster_id == thread->cluster_id) {
while (ck_pr_load_uint(&previous->wait) == true)
if (previous->previous != NULL) {
while (ck_pr_load_uint(&previous->wait) == true &&
ck_pr_load_int(&previous->cluster_id) == thread->cluster_id &&
ck_pr_load_uint(&previous->splice) == false)
ck_pr_stall();
/* We're head of the global queue, we're done */
if (ck_pr_load_uint(&previous->splice) == false)
if (ck_pr_load_int(&previous->cluster_id) == thread->cluster_id &&
ck_pr_load_uint(&previous->splice) == false)
return;
}

8
src/ck_barrier_combining.c
View File

@ -35,7 +35,7 @@ struct ck_barrier_combining_queue {
struct ck_barrier_combining_group *tail;
};
CK_CC_INLINE static struct ck_barrier_combining_group *
static struct ck_barrier_combining_group *
ck_barrier_combining_queue_dequeue(struct ck_barrier_combining_queue *queue)
{
struct ck_barrier_combining_group *front = NULL;
@ -48,7 +48,7 @@ ck_barrier_combining_queue_dequeue(struct ck_barrier_combining_queue *queue)
return front;
}
CK_CC_INLINE static void
static void
ck_barrier_combining_insert(struct ck_barrier_combining_group *parent,
struct ck_barrier_combining_group *tnode,
struct ck_barrier_combining_group **child)
@ -72,7 +72,7 @@ ck_barrier_combining_insert(struct ck_barrier_combining_group *parent,
* into the barrier's tree. We use a queue to implement this
* traversal.
*/
CK_CC_INLINE static void
static void
ck_barrier_combining_queue_enqueue(struct ck_barrier_combining_queue *queue,
struct ck_barrier_combining_group *node_value)
{
@ -185,10 +185,10 @@ ck_barrier_combining_aux(struct ck_barrier_combining *barrier,
ck_pr_fence_store();
ck_pr_store_uint(&tnode->sense, ~tnode->sense);
} else {
ck_pr_fence_memory();
while (sense != ck_pr_load_uint(&tnode->sense))
ck_pr_stall();
}
ck_pr_fence_memory();
return;
}