diff mbox

[dpdk-dev,v2,10/41] eal: add "single file segments" command-line option

Message ID 191e3ab33c918296c8b01e9dbb50c14b598788a4.1520428025.git.anatoly.burakov@intel.com (mailing list archive)
State Superseded, archived
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Burakov, Anatoly March 7, 2018, 4:56 p.m. UTC 
  For now, this option does nothing, but it will be useful in
dynamic memory allocation down the line. Currently, DPDK stores
all pages as separate files in hugetlbfs. This option will allow
storing all pages in one file (one file per socket, per page size).

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 lib/librte_eal/common/eal_common_options.c | 4 ++++
 lib/librte_eal/common/eal_internal_cfg.h   | 4 ++++
 lib/librte_eal/common/eal_options.h        | 2 ++
 lib/librte_eal/linuxapp/eal/eal.c          | 1 +
 4 files changed, 11 insertions(+)
diff mbox

Patch

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 0be80cb..dbc3fb5 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -73,6 +73,7 @@  eal_long_options[] = {
 	{OPT_VDEV,              1, NULL, OPT_VDEV_NUM             },
 	{OPT_VFIO_INTR,         1, NULL, OPT_VFIO_INTR_NUM        },
 	{OPT_VMWARE_TSC_MAP,    0, NULL, OPT_VMWARE_TSC_MAP_NUM   },
+	{OPT_SINGLE_FILE_SEGMENTS, 0, NULL, OPT_SINGLE_FILE_SEGMENTS_NUM},
 	{0,                     0, NULL, 0                        }
 };
 
@@ -1161,6 +1162,9 @@  eal_parse_common_option(int opt, const char *optarg,
 
 		core_parsed = LCORE_OPT_MAP;
 		break;
+	case OPT_SINGLE_FILE_SEGMENTS_NUM:
+		conf->single_file_segments = 1;
+		break;
 
 	/* don't know what to do, leave this to caller */
 	default:
diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
index a0082d1..d4c02d6 100644
--- a/lib/librte_eal/common/eal_internal_cfg.h
+++ b/lib/librte_eal/common/eal_internal_cfg.h
@@ -47,6 +47,10 @@  struct internal_config {
 	volatile unsigned force_sockets;
 	volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory per socket */
 	uintptr_t base_virtaddr;          /**< base address to try and reserve memory from */
+	volatile unsigned single_file_segments;
+	/**< true if storing all pages within single files (per-page-size,
+	 * per-node).
+	 */
 	volatile int syslog_facility;	  /**< facility passed to openlog() */
 	/** default interrupt mode for VFIO */
 	volatile enum rte_intr_mode vfio_intr_mode;
diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h
index e86c711..a4b80d5 100644
--- a/lib/librte_eal/common/eal_options.h
+++ b/lib/librte_eal/common/eal_options.h
@@ -55,6 +55,8 @@  enum {
 	OPT_VFIO_INTR_NUM,
 #define OPT_VMWARE_TSC_MAP    "vmware-tsc-map"
 	OPT_VMWARE_TSC_MAP_NUM,
+#define OPT_SINGLE_FILE_SEGMENTS    "single-file-segments"
+	OPT_SINGLE_FILE_SEGMENTS_NUM,
 	OPT_LONG_MAX_NUM
 };
 
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 2ecd07b..c84e6bf 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -348,6 +348,7 @@  eal_usage(const char *prgname)
 	       "  --"OPT_BASE_VIRTADDR"     Base virtual address\n"
 	       "  --"OPT_CREATE_UIO_DEV"    Create /dev/uioX (usually done by hotplug)\n"
 	       "  --"OPT_VFIO_INTR"         Interrupt mode for VFIO (legacy|msi|msix)\n"
+	       "  --"OPT_SINGLE_FILE_SEGMENTS" Put all hugepage memory in single files\n"
 	       "\n");
 	/* Allow the application to print its usage message too if hook is set */
 	if ( rte_application_usage_hook ) {