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From: Qi Zhang <qi.z.zhang@intel.com>
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Cc: magnus.karlsson@intei.com, bjorn.topel@intel.com,
Qi Zhang <qi.z.zhang@intel.com>
Date: Tue, 27 Feb 2018 17:33:02 +0800
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Subject: [dpdk-dev] [RFC 3/7] lib/mempool: allow page size aligned mempool
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Allow create a mempool with page size aligned base address.
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
lib/librte_mempool/rte_mempool.c | 2 ++
lib/librte_mempool/rte_mempool.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index 54f7f4ba4..f8d4814ad 100644
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -567,6 +567,8 @@ rte_mempool_populate_default(struct rte_mempool *mp)
pg_shift = 0; /* not needed, zone is physically contiguous */
pg_sz = 0;
align = RTE_CACHE_LINE_SIZE;
+ if (mp->flags & MEMPOOL_F_PAGE_ALIGN)
+ align = getpagesize();
} else {
pg_sz = getpagesize();
pg_shift = rte_bsf32(pg_sz);
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index 8b1b7f7ed..774ab0f66 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -245,6 +245,7 @@ struct rte_mempool {
#define MEMPOOL_F_SC_GET 0x0008 /**< Default get is "single-consumer".*/
#define MEMPOOL_F_POOL_CREATED 0x0010 /**< Internal: pool is created. */
#define MEMPOOL_F_NO_PHYS_CONTIG 0x0020 /**< Don't need physically contiguous objs. */
+#define MEMPOOL_F_PAGE_ALIGN 0x0040 /**< Base address is page aligned. */
/**
* This capability flag is advertised by a mempool handler, if the whole
* memory area containing the objects must be physically contiguous.
--
2.13.6