From: Cyril Chemparathy <cchemparathy@ezchip.com>
Date: Thu, 9 Jul 2015 08:25:14 +0000 (+0800)
Subject: mem: refactor memzone reserve functions
X-Git-Tag: spdx-start~8763
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=2d65283c259616a5643599ce32d7a62d174ec49e;p=dpdk.git

mem: refactor memzone reserve functions

The definitions of rte_memzone_reserve_aligned() and
rte_memzone_reserve_bounded() were identical with the exception of the
bound argument passed into rte_memzone_reserve_thread_safe().

This patch removes this replication of code by unifying it into
rte_memzone_reserve_thread_safe(), which is then called by all three
variants of rte_memzone_reserve().

Signed-off-by: Cyril Chemparathy <cchemparathy@ezchip.com>
Signed-off-by: Zhigang Lu <zlu@ezchip.com>
---

diff --git a/lib/librte_eal/common/eal_common_memzone.c b/lib/librte_eal/common/eal_common_memzone.c
index aee184ac7e..1ea502b618 100644
--- a/lib/librte_eal/common/eal_common_memzone.c
+++ b/lib/librte_eal/common/eal_common_memzone.c
@@ -76,18 +76,6 @@ memzone_lookup_thread_unsafe(const char *name)
 	return NULL;
 }
 
-/*
- * Return a pointer to a correctly filled memzone descriptor. If the
- * allocation cannot be done, return NULL.
- */
-const struct rte_memzone *
-rte_memzone_reserve(const char *name, size_t len, int socket_id,
-		      unsigned flags)
-{
-	return rte_memzone_reserve_aligned(name,
-			len, socket_id, flags, RTE_CACHE_LINE_SIZE);
-}
-
 /*
  * Helper function for memzone_reserve_aligned_thread_unsafe().
  * Calculate address offset from the start of the segment.
@@ -307,13 +295,10 @@ memzone_reserve_aligned_thread_unsafe(const char *name, size_t len,
 	return mz;
 }
 
-/*
- * Return a pointer to a correctly filled memzone descriptor (with a
- * specified alignment). If the allocation cannot be done, return NULL.
- */
-const struct rte_memzone *
-rte_memzone_reserve_aligned(const char *name, size_t len,
-		int socket_id, unsigned flags, unsigned align)
+static const struct rte_memzone *
+rte_memzone_reserve_thread_safe(const char *name, size_t len,
+				int socket_id, unsigned flags, unsigned align,
+				unsigned bound)
 {
 	struct rte_mem_config *mcfg;
 	const struct rte_memzone *mz = NULL;
@@ -331,7 +316,7 @@ rte_memzone_reserve_aligned(const char *name, size_t len,
 	rte_rwlock_write_lock(&mcfg->mlock);
 
 	mz = memzone_reserve_aligned_thread_unsafe(
-		name, len, socket_id, flags, align, 0);
+		name, len, socket_id, flags, align, bound);
 
 	rte_rwlock_write_unlock(&mcfg->mlock);
 
@@ -340,36 +325,40 @@ rte_memzone_reserve_aligned(const char *name, size_t len,
 
 /*
  * Return a pointer to a correctly filled memzone descriptor (with a
- * specified alignment and boundary).
- * If the allocation cannot be done, return NULL.
+ * specified alignment and boundary). If the allocation cannot be done,
+ * return NULL.
  */
 const struct rte_memzone *
-rte_memzone_reserve_bounded(const char *name, size_t len,
-		int socket_id, unsigned flags, unsigned align, unsigned bound)
+rte_memzone_reserve_bounded(const char *name, size_t len, int socket_id,
+			    unsigned flags, unsigned align, unsigned bound)
 {
-	struct rte_mem_config *mcfg;
-	const struct rte_memzone *mz = NULL;
-
-	/* both sizes cannot be explicitly called for */
-	if (((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB))
-		|| ((flags & RTE_MEMZONE_16MB) && (flags & RTE_MEMZONE_16GB))) {
-		rte_errno = EINVAL;
-		return NULL;
-	}
-
-	/* get pointer to global configuration */
-	mcfg = rte_eal_get_configuration()->mem_config;
-
-	rte_rwlock_write_lock(&mcfg->mlock);
-
-	mz = memzone_reserve_aligned_thread_unsafe(
-		name, len, socket_id, flags, align, bound);
-
-	rte_rwlock_write_unlock(&mcfg->mlock);
+	return rte_memzone_reserve_thread_safe(name, len, socket_id, flags,
+					       align, bound);
+}
 
-	return mz;
+/*
+ * Return a pointer to a correctly filled memzone descriptor (with a
+ * specified alignment). If the allocation cannot be done, return NULL.
+ */
+const struct rte_memzone *
+rte_memzone_reserve_aligned(const char *name, size_t len, int socket_id,
+			    unsigned flags, unsigned align)
+{
+	return rte_memzone_reserve_thread_safe(name, len, socket_id, flags,
+					       align, 0);
 }
 
+/*
+ * Return a pointer to a correctly filled memzone descriptor. If the
+ * allocation cannot be done, return NULL.
+ */
+const struct rte_memzone *
+rte_memzone_reserve(const char *name, size_t len, int socket_id,
+		    unsigned flags)
+{
+	return rte_memzone_reserve_thread_safe(name, len, socket_id,
+					       flags, RTE_CACHE_LINE_SIZE, 0);
+}
 
 /*
  * Lookup for the memzone identified by the given name