[dpdk-dev,v5,06/10] devargs: make devargs list private

Message ID 1aac53b32a519151fdec6c26e004658d8f0cc076.1524527213.git.gaetan.rivet@6wind.com (mailing list archive)
State Accepted, archived
Delegated to: Thomas Monjalon
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Gaëtan Rivet April 23, 2018, 11:54 p.m. UTC
  Initially, rte_devargs was meant to be populated once and sometimes
accessed, then never emptied.

With the new hotplug functionality having better standing, new usage
appeared with repeated addition of devices and their subsequent removal.

Exposing devargs_list pushed bus drivers and libraries to be careless
and inconsistent in their memory management. Making it private will
allow to rationalize this part of the EAL and ensure that fewer memory
leaks occur during operations.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
---
 doc/guides/rel_notes/deprecation.rst        | 1 -
 lib/librte_eal/common/eal_common_devargs.c  | 3 +++
 lib/librte_eal/common/include/rte_devargs.h | 6 ------
 lib/librte_eal/rte_eal_version.map          | 1 -
 4 files changed, 3 insertions(+), 8 deletions(-)
  

Patch

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 1f814b4b1..2165fe4c6 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -16,7 +16,6 @@  Deprecation Notices
 
   - removal of ``name`` and ``args`` fields.
   - The enum ``rte_devtype`` was used to identify a bus and will disappear.
-  - The ``rte_devargs_list`` will be made private.
   - Functions previously deprecated will change or disappear:
 
     + ``rte_eal_devargs_add``
diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c
index c6c5eabcf..a7f374cfa 100644
--- a/lib/librte_eal/common/eal_common_devargs.c
+++ b/lib/librte_eal/common/eal_common_devargs.c
@@ -18,6 +18,9 @@ 
 #include <rte_tailq.h>
 #include "eal_private.h"
 
+/** user device double-linked queue type definition */
+TAILQ_HEAD(rte_devargs_list, rte_devargs);
+
 /** Global list of user devices */
 struct rte_devargs_list devargs_list =
 	TAILQ_HEAD_INITIALIZER(devargs_list);
diff --git a/lib/librte_eal/common/include/rte_devargs.h b/lib/librte_eal/common/include/rte_devargs.h
index aba31481b..e48cc3cf2 100644
--- a/lib/librte_eal/common/include/rte_devargs.h
+++ b/lib/librte_eal/common/include/rte_devargs.h
@@ -59,12 +59,6 @@  struct rte_devargs {
 	char *args;
 };
 
-/** user device double-linked queue type definition */
-TAILQ_HEAD(rte_devargs_list, rte_devargs);
-
-/** Global list of user devices */
-extern struct rte_devargs_list devargs_list;
-
 /**
  * Parse a devargs string.
  *
diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map
index 74c779068..4054fc111 100644
--- a/lib/librte_eal/rte_eal_version.map
+++ b/lib/librte_eal/rte_eal_version.map
@@ -2,7 +2,6 @@  DPDK_2.0 {
 	global:
 
 	__rte_panic;
-	devargs_list;
 	eal_parse_sysfs_value;
 	eal_timer_source;
 	lcore_config;