diff mbox

[dpdk-dev,v5,11/14] Add huge page size define for IBM Power architecture

Message ID 1416953837-15894-12-git-send-email-chaozhu@linux.vnet.ibm.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Chao Zhu Nov. 25, 2014, 10:17 p.m. UTC
IBM Power architecture has different huge page sizes (16MB, 16GB) than
x86.This patch defines RTE_PGSIZE_16M and RTE_PGSIZE_16G in the
rte_page_sizes enum variable and adds huge page size support of DPDK
for IBM Power architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 app/test/test_memzone.c                     |  123 ++++++++++++++++++++++++++-
 lib/librte_eal/common/eal_common_memzone.c  |   19 +++-
 lib/librte_eal/common/include/rte_memory.h  |    9 ++-
 lib/librte_eal/common/include/rte_memzone.h |    8 ++
 lib/librte_eal/linuxapp/eal/eal.c           |    9 ++-
 5 files changed, 156 insertions(+), 12 deletions(-)
diff mbox

Patch

diff --git a/app/test/test_memzone.c b/app/test/test_memzone.c
index 381f643..387dbbc 100644
--- a/app/test/test_memzone.c
+++ b/app/test/test_memzone.c
@@ -133,6 +133,8 @@  test_memzone_reserve_flags(void)
 	const struct rte_memseg *ms;
 	int hugepage_2MB_avail = 0;
 	int hugepage_1GB_avail = 0;
+	int hugepage_16MB_avail = 0;
+	int hugepage_16GB_avail = 0;
 	const size_t size = 100;
 	int i = 0;
 	ms = rte_eal_get_physmem_layout();
@@ -141,12 +143,20 @@  test_memzone_reserve_flags(void)
 			hugepage_2MB_avail = 1;
 		if (ms[i].hugepage_sz == RTE_PGSIZE_1G)
 			hugepage_1GB_avail = 1;
+		if (ms[i].hugepage_sz == RTE_PGSIZE_16M)
+			hugepage_16MB_avail = 1;
+		if (ms[i].hugepage_sz == RTE_PGSIZE_16G)
+			hugepage_16GB_avail = 1;
 	}
-	/* Display the availability of 2MB and 1GB pages */
+	/* Display the availability of 2MB ,1GB, 16MB, 16GB pages */
 	if (hugepage_2MB_avail)
 		printf("2MB Huge pages available\n");
 	if (hugepage_1GB_avail)
 		printf("1GB Huge pages available\n");
+	if (hugepage_16MB_avail)
+		printf("16MB Huge pages available\n");
+	if (hugepage_16GB_avail)
+		printf("16GB Huge pages available\n");
 	/*
 	 * If 2MB pages available, check that a small memzone is correctly
 	 * reserved from 2MB huge pages when requested by the RTE_MEMZONE_2MB flag.
@@ -255,6 +265,117 @@  test_memzone_reserve_flags(void)
 			}
 		}
 	}
+	/*
+	 * This option is for IBM Power. If 16MB pages available, check
+	 * that a small memzone is correctly reserved from 16MB huge pages
+	 * when requested by the RTE_MEMZONE_16MB flag. Also check that
+	 * RTE_MEMZONE_SIZE_HINT_ONLY flag only defaults to an available
+	 * page size (i.e 16GB ) when 16MB pages are unavailable.
+	 */
+	if (hugepage_16MB_avail) {
+		mz = rte_memzone_reserve("flag_zone_16M", size, SOCKET_ID_ANY,
+				RTE_MEMZONE_16MB);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 16MB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16M) {
+			printf("hugepage_sz not equal 16M\n");
+			return -1;
+		}
+
+		mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
+		SOCKET_ID_ANY, RTE_MEMZONE_16MB|RTE_MEMZONE_SIZE_HINT_ONLY);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 2MB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16M) {
+			printf("hugepage_sz not equal 16M\n");
+			return -1;
+		}
+
+		/* Check if 1GB huge pages are unavailable, that function fails
+		 * unless HINT flag is indicated
+		 */
+		if (!hugepage_16GB_avail) {
+			mz = rte_memzone_reserve("flag_zone_16G_HINT", size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16GB|RTE_MEMZONE_SIZE_HINT_ONLY);
+			if (mz == NULL) {
+				printf("MEMZONE FLAG 16GB & HINT\n");
+				return -1;
+			}
+			if (mz->hugepage_sz != RTE_PGSIZE_16M) {
+				printf("hugepage_sz not equal 16M\n");
+				return -1;
+			}
+
+			mz = rte_memzone_reserve("flag_zone_16G", size,
+				SOCKET_ID_ANY, RTE_MEMZONE_16GB);
+			if (mz != NULL) {
+				printf("MEMZONE FLAG 16GB\n");
+				return -1;
+			}
+		}
+	}
+	/*As with 16MB tests above for 16GB huge page requests*/
+	if (hugepage_16GB_avail) {
+		mz = rte_memzone_reserve("flag_zone_16G", size, SOCKET_ID_ANY,
+				RTE_MEMZONE_16GB);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 16GB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16G) {
+			printf("hugepage_sz not equal 16G\n");
+			return -1;
+		}
+
+		mz = rte_memzone_reserve("flag_zone_16G_HINT", size,
+		SOCKET_ID_ANY, RTE_MEMZONE_16GB|RTE_MEMZONE_SIZE_HINT_ONLY);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 16GB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16G) {
+			printf("hugepage_sz not equal 16G\n");
+			return -1;
+		}
+
+		/* Check if 1GB huge pages are unavailable, that function fails
+		 * unless HINT flag is indicated
+		 */
+		if (!hugepage_16MB_avail) {
+			mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16MB|RTE_MEMZONE_SIZE_HINT_ONLY);
+			if (mz == NULL) {
+				printf("MEMZONE FLAG 16MB & HINT\n");
+				return -1;
+			}
+			if (mz->hugepage_sz != RTE_PGSIZE_16G) {
+				printf("hugepage_sz not equal 16G\n");
+				return -1;
+			}
+			mz = rte_memzone_reserve("flag_zone_16M", size,
+				SOCKET_ID_ANY, RTE_MEMZONE_16MB);
+			if (mz != NULL) {
+				printf("MEMZONE FLAG 16MB\n");
+				return -1;
+			}
+		}
+
+		if (hugepage_16MB_avail && hugepage_16GB_avail) {
+			mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16MB|RTE_MEMZONE_16GB);
+			if (mz != NULL) {
+				printf("BOTH SIZES SET\n");
+				return -1;
+			}
+		}
+	}
 	return 0;
 }
 
diff --git a/lib/librte_eal/common/eal_common_memzone.c b/lib/librte_eal/common/eal_common_memzone.c
index 5acd9ce..f1fc4a7 100644
--- a/lib/librte_eal/common/eal_common_memzone.c
+++ b/lib/librte_eal/common/eal_common_memzone.c
@@ -216,10 +216,16 @@  memzone_reserve_aligned_thread_unsafe(const char *name, size_t len,
 
 		/* check flags for hugepage sizes */
 		if ((flags & RTE_MEMZONE_2MB) &&
-				free_memseg[i].hugepage_sz == RTE_PGSIZE_1G )
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_1G)
 			continue;
 		if ((flags & RTE_MEMZONE_1GB) &&
-				free_memseg[i].hugepage_sz == RTE_PGSIZE_2M )
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_2M)
+			continue;
+		if ((flags & RTE_MEMZONE_16MB) &&
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_16G)
+			continue;
+		if ((flags & RTE_MEMZONE_16GB) &&
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_16M)
 			continue;
 
 		/* this segment is the best until now */
@@ -256,7 +262,8 @@  memzone_reserve_aligned_thread_unsafe(const char *name, size_t len,
 		 * try allocating again without the size parameter otherwise -fail.
 		 */
 		if ((flags & RTE_MEMZONE_SIZE_HINT_ONLY)  &&
-		    ((flags & RTE_MEMZONE_1GB) || (flags & RTE_MEMZONE_2MB)))
+		    ((flags & RTE_MEMZONE_1GB) || (flags & RTE_MEMZONE_2MB)
+		|| (flags & RTE_MEMZONE_16MB) || (flags & RTE_MEMZONE_16GB)))
 			return memzone_reserve_aligned_thread_unsafe(name,
 				len, socket_id, 0, align, bound);
 
@@ -313,7 +320,8 @@  rte_memzone_reserve_aligned(const char *name, size_t len,
 	const struct rte_memzone *mz = NULL;
 
 	/* both sizes cannot be explicitly called for */
-	if ((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB)) {
+	if (((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB))
+		|| ((flags & RTE_MEMZONE_16MB) && (flags & RTE_MEMZONE_16GB))) {
 		rte_errno = EINVAL;
 		return NULL;
 	}
@@ -344,7 +352,8 @@  rte_memzone_reserve_bounded(const char *name, size_t len,
 	const struct rte_memzone *mz = NULL;
 
 	/* both sizes cannot be explicitly called for */
-	if ((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB)) {
+	if (((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB))
+		|| ((flags & RTE_MEMZONE_16MB) && (flags & RTE_MEMZONE_16GB))) {
 		rte_errno = EINVAL;
 		return NULL;
 	}
diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h
index 4cf8ea9..2ed2637 100644
--- a/lib/librte_eal/common/include/rte_memory.h
+++ b/lib/librte_eal/common/include/rte_memory.h
@@ -53,9 +53,12 @@  extern "C" {
 #endif
 
 enum rte_page_sizes {
-	RTE_PGSIZE_4K = 1 << 12,
-	RTE_PGSIZE_2M = RTE_PGSIZE_4K << 9,
-	RTE_PGSIZE_1G = RTE_PGSIZE_2M <<9
+	RTE_PGSIZE_4K = 1ULL << 12,
+	RTE_PGSIZE_2M = 1ULL << 21,
+	RTE_PGSIZE_1G = 1ULL << 30,
+	RTE_PGSIZE_64K = 1ULL << 16,
+	RTE_PGSIZE_16M = 1ULL << 24,
+	RTE_PGSIZE_16G = 1ULL << 34
 };
 
 #define SOCKET_ID_ANY -1                    /**< Any NUMA socket. */
diff --git a/lib/librte_eal/common/include/rte_memzone.h b/lib/librte_eal/common/include/rte_memzone.h
index 5014409..7d47bff 100644
--- a/lib/librte_eal/common/include/rte_memzone.h
+++ b/lib/librte_eal/common/include/rte_memzone.h
@@ -60,6 +60,8 @@  extern "C" {
 
 #define RTE_MEMZONE_2MB            0x00000001   /**< Use 2MB pages. */
 #define RTE_MEMZONE_1GB            0x00000002   /**< Use 1GB pages. */
+#define RTE_MEMZONE_16MB            0x00000100   /**< Use 16MB pages. */
+#define RTE_MEMZONE_16GB            0x00000200   /**< Use 16GB pages. */
 #define RTE_MEMZONE_SIZE_HINT_ONLY 0x00000004   /**< Use available page size */
 
 /**
@@ -111,6 +113,8 @@  struct rte_memzone {
  *   taken from 1GB or 2MB hugepages.
  *   - RTE_MEMZONE_2MB - Reserve from 2MB pages
  *   - RTE_MEMZONE_1GB - Reserve from 1GB pages
+ *   - RTE_MEMZONE_16MB - Reserve from 16MB pages
+ *   - RTE_MEMZONE_16GB - Reserve from 16GB pages
  *   - RTE_MEMZONE_SIZE_HINT_ONLY - Allow alternative page size to be used if
  *                                  the requested page size is unavailable.
  *                                  If this flag is not set, the function
@@ -156,6 +160,8 @@  const struct rte_memzone *rte_memzone_reserve(const char *name,
  *   taken from 1GB or 2MB hugepages.
  *   - RTE_MEMZONE_2MB - Reserve from 2MB pages
  *   - RTE_MEMZONE_1GB - Reserve from 1GB pages
+ *   - RTE_MEMZONE_16MB - Reserve from 16MB pages
+ *   - RTE_MEMZONE_16GB - Reserve from 16GB pages
  *   - RTE_MEMZONE_SIZE_HINT_ONLY - Allow alternative page size to be used if
  *                                  the requested page size is unavailable.
  *                                  If this flag is not set, the function
@@ -206,6 +212,8 @@  const struct rte_memzone *rte_memzone_reserve_aligned(const char *name,
  *   taken from 1GB or 2MB hugepages.
  *   - RTE_MEMZONE_2MB - Reserve from 2MB pages
  *   - RTE_MEMZONE_1GB - Reserve from 1GB pages
+ *   - RTE_MEMZONE_16MB - Reserve from 16MB pages
+ *   - RTE_MEMZONE_16GB - Reserve from 16GB pages
  *   - RTE_MEMZONE_SIZE_HINT_ONLY - Allow alternative page size to be used if
  *                                  the requested page size is unavailable.
  *                                  If this flag is not set, the function
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 8c0223f..8d2a546 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -455,9 +455,12 @@  eal_parse_base_virtaddr(const char *arg)
 		return -1;
 #endif
 
-	/* align the addr on 2M boundary */
-	internal_config.base_virtaddr = RTE_PTR_ALIGN_CEIL((uintptr_t)addr,
-	                                                   RTE_PGSIZE_2M);
+	/* align the addr on 16M boundary, 16MB is the minimum huge page
+	 * size on IBM Power architecture. If the addr is aligned to 16MB,
+	 * it can align to 2MB for x86. So this alignment can also be used
+	 * on x86 */
+	internal_config.base_virtaddr =
+		RTE_PTR_ALIGN_CEIL((uintptr_t)addr, RTE_PGSIZE_16M);
 
 	return 0;
 }