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mem: add huge page sizes for IBM Power

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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>
Acked-by: David Marchand <david.marchand@6wind.com>
This commit is contained in:
Chao Zhu 2014-11-25 17:17:14 -05:00 committed by Thomas Monjalon
parent 536681d7e9
commit b77b563972
5 changed files with 156 additions and 12 deletions
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123
app/test/test_memzone.c
View File

@ -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;
}

19
lib/librte_eal/common/eal_common_memzone.c
View File

@ -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;
}

9
lib/librte_eal/common/include/rte_memory.h
View File

@ -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. */

8
lib/librte_eal/common/include/rte_memzone.h
View File

@ -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

9
lib/librte_eal/linuxapp/eal/eal.c
View File

@ -453,9 +453,12 @@ 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;
}