Resolve Bug https://bugs.linaro.org/show_bug.cgi?id=1851 by moving local buffer caches to the pool itself. This enables odp_pool_destroy() to properly flush all local caches as part of its processing.
Signed-off-by: Bill Fischofer <bill.fischo...@linaro.org> --- platform/linux-generic/include/odp_internal.h | 1 + platform/linux-generic/include/odp_pool_internal.h | 13 ++++++++--- platform/linux-generic/odp_init.c | 5 +++++ platform/linux-generic/odp_pool.c | 25 +++++++++++++++------- 4 files changed, 33 insertions(+), 11 deletions(-) diff --git a/platform/linux-generic/include/odp_internal.h b/platform/linux-generic/include/odp_internal.h index 6f0050f..010b82f 100644 --- a/platform/linux-generic/include/odp_internal.h +++ b/platform/linux-generic/include/odp_internal.h @@ -52,6 +52,7 @@ int odp_shm_term_global(void); int odp_shm_init_local(void); int odp_pool_init_global(void); +int odp_pool_init_local(void); int odp_pool_term_global(void); int odp_pool_term_local(void); diff --git a/platform/linux-generic/include/odp_pool_internal.h b/platform/linux-generic/include/odp_pool_internal.h index 136db2c..bb70159 100644 --- a/platform/linux-generic/include/odp_pool_internal.h +++ b/platform/linux-generic/include/odp_pool_internal.h @@ -53,9 +53,14 @@ typedef struct _odp_buffer_pool_init_t { /* Local cache for buffer alloc/free acceleration */ typedef struct local_cache_t { - odp_buffer_hdr_t *buf_freelist; /* The local cache */ - uint64_t bufallocs; /* Local buffer alloc count */ - uint64_t buffrees; /* Local buffer free count */ + union { + struct { + odp_buffer_hdr_t *buf_freelist; /* The local cache */ + uint64_t bufallocs; /* Local buffer alloc count */ + uint64_t buffrees; /* Local buffer free count */ + }; + uint8_t pad[ODP_CACHE_LINE_SIZE_ROUNDUP(sizeof(uint64_t))]; + }; } local_cache_t; /* Use ticketlock instead of spinlock */ @@ -133,6 +138,8 @@ struct pool_entry_s { uint32_t low_wm; uint32_t headroom; uint32_t tailroom; + + local_cache_t local_cache[ODP_CONFIG_MAX_THREADS] ODP_ALIGNED_CACHE; }; typedef union pool_entry_u { diff --git a/platform/linux-generic/odp_init.c b/platform/linux-generic/odp_init.c index 48d9b20..5e19d86 100644 --- a/platform/linux-generic/odp_init.c +++ b/platform/linux-generic/odp_init.c @@ -138,6 +138,11 @@ int odp_init_local(odp_thread_type_t thr_type) return -1; } + if (odp_pool_init_local()) { + ODP_ERR("ODP pool local init failed.\n"); + return -1; + } + if (odp_schedule_init_local()) { ODP_ERR("ODP schedule local init failed.\n"); return -1; diff --git a/platform/linux-generic/odp_pool.c b/platform/linux-generic/odp_pool.c index 30d4b2b..d06a9d4 100644 --- a/platform/linux-generic/odp_pool.c +++ b/platform/linux-generic/odp_pool.c @@ -57,8 +57,8 @@ static const char SHM_DEFAULT_NAME[] = "odp_buffer_pools"; /* Pool entry pointers (for inlining) */ void *pool_entry_ptr[ODP_CONFIG_POOLS]; -/* Local cache for buffer alloc/free acceleration */ -static __thread local_cache_t local_cache[ODP_CONFIG_POOLS]; +/* Cache thread id locally for local cache performance */ +static __thread int local_id; int odp_pool_init_global(void) { @@ -107,6 +107,12 @@ int odp_pool_init_global(void) return 0; } +int odp_pool_init_local(void) +{ + local_id = odp_thread_id(); + return 0; +} + int odp_pool_term_global(void) { int i; @@ -442,6 +448,7 @@ int odp_pool_destroy(odp_pool_t pool_hdl) { uint32_t pool_id = pool_handle_to_index(pool_hdl); pool_entry_t *pool = get_pool_entry(pool_id); + int i; if (pool == NULL) return -1; @@ -455,8 +462,9 @@ int odp_pool_destroy(odp_pool_t pool_hdl) return -1; } - /* Make sure local cache is empty */ - flush_cache(&local_cache[pool_id], &pool->s); + /* Make sure local caches are empty */ + for (i = 0; i < ODP_CONFIG_MAX_THREADS; i++) + flush_cache(&pool->s.local_cache[i], &pool->s); /* Call fails if pool has allocated buffers */ if (odp_atomic_load_u32(&pool->s.bufcount) < pool->s.buf_num) { @@ -485,8 +493,9 @@ odp_buffer_t buffer_alloc(odp_pool_t pool_hdl, size_t size) return ODP_BUFFER_INVALID; /* Try to satisfy request from the local cache */ - buf = (odp_anybuf_t *)(void *)get_local_buf(&local_cache[pool_id], - &pool->s, totsize); + buf = (odp_anybuf_t *) + (void *)get_local_buf(&pool->s.local_cache[local_id], + &pool->s, totsize); /* If cache is empty, satisfy request from the pool */ if (odp_unlikely(buf == NULL)) { @@ -537,7 +546,7 @@ void odp_buffer_free(odp_buffer_t buf) if (odp_unlikely(pool->s.low_wm_assert)) ret_buf(&pool->s, buf_hdr); else - ret_local_buf(&local_cache[pool->s.pool_id], buf_hdr); + ret_local_buf(&pool->s.local_cache[local_id], buf_hdr); } void _odp_flush_caches(void) @@ -546,7 +555,7 @@ void _odp_flush_caches(void) for (i = 0; i < ODP_CONFIG_POOLS; i++) { pool_entry_t *pool = get_pool_entry(i); - flush_cache(&local_cache[i], &pool->s); + flush_cache(&pool->s.local_cache[local_id], &pool->s); } } -- 2.1.4 _______________________________________________ lng-odp mailing list lng-odp@lists.linaro.org https://lists.linaro.org/mailman/listinfo/lng-odp