From: Anatoly Burakov <anatoly.burakov@intel.com>
To: dev@dpdk.org
Cc: ray.kinsella@intel.com, kuralamudhan.ramakrishnan@intel.com,
louise.m.daly@intel.com, bruce.richardson@intel.com,
ferruh.yigit@intel.com, konstantin.ananyev@intel.com
Subject: [dpdk-dev] [RFC 08/10] eal: add support for no-shared-files in hugepage data file
Date: Thu, 31 May 2018 15:32:31 +0100 [thread overview]
Message-ID: <d9dae85411185ae5f10901405e651d003dfdb1ad.1527776837.git.anatoly.burakov@intel.com> (raw)
In-Reply-To: <cover.1527776837.git.anatoly.burakov@intel.com>
In-Reply-To: <cover.1527776837.git.anatoly.burakov@intel.com>
Do not create a shared hugepage data file if we were asked to
not create any shared files.
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
lib/librte_eal/linuxapp/eal/eal_memory.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index 5e1810712..d7b43b5c1 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -521,7 +521,18 @@ static void *
create_shared_memory(const char *filename, const size_t mem_size)
{
void *retval;
- int fd = open(filename, O_CREAT | O_RDWR, 0666);
+ int fd;
+
+ /* if no shared files mode is used, create anonymous memory instead */
+ if (internal_config.no_shared_files) {
+ retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ if (retval == MAP_FAILED)
+ return NULL;
+ return retval;
+ }
+
+ fd = open(filename, O_CREAT | O_RDWR, 0666);
if (fd < 0)
return NULL;
if (ftruncate(fd, mem_size) < 0) {
--
2.17.0
next prev parent reply other threads:[~2018-05-31 14:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-31 14:32 [dpdk-dev] [RFC 00/10] Support running DPDK without hugetlbfs mountpoint Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 01/10] eal: add --no-shared-files option Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 02/10] eal: make --no-shconf an alias for --no-shared-files Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 03/10] eal: make --huge-unlink " Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 04/10] fbarray: support no-shared-files mode Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 05/10] mem: add support for " Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 06/10] ipc: " Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 07/10] eal: add support for no-shared-files for hugepage info Anatoly Burakov
2018-05-31 14:32 ` Anatoly Burakov [this message]
2018-05-31 14:32 ` [dpdk-dev] [RFC 09/10] eal: do not create runtime dir in no-shared-files mode Anatoly Burakov
2018-05-31 14:32 ` [dpdk-dev] [RFC 10/10] mem: enable memfd-based hugepage allocation Anatoly Burakov
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