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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, thomas@monjalon.net
Date: Fri, 1 Jun 2018 18:15:13 +0100
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Subject: [dpdk-dev] [PATCH 4/9] eal: add support for no-shconf in hugepage
data file
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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>
---
Notes:
RFC->v1:
- Use --no-shconf only
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 c917de1c2..cb784e1c3 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_shconf) {
+ 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