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From: mwilck@suse.com
To: Christophe Varoqui <christophe.varoqui@opensvc.com>,
	Benjamin Marzinski <bmarzins@redhat.com>
Cc: dm-devel@redhat.com, Martin Wilck <mwilck@suse.com>
Subject: [PATCH 06/11] libmultipath: checkers/prio: allow non-lazy .so loading
Date: Thu, 24 Sep 2020 15:36:39 +0200
Message-ID: <20200924133644.14034-7-mwilck@suse.com> (raw)
In-Reply-To: <20200924133644.14034-1-mwilck@suse.com>

From: Martin Wilck <mwilck@suse.com>

If compiled with -DLOAD_ALL_SHARED_LIBS, all known prioritizers
and checkers will be loaded immediately on startup. This is useful
for determining symbol usage (start executables with LD_BIND_NOW=1).
---
 libmultipath/checkers.c | 17 +++++++++++++++++
 libmultipath/prio.c     | 22 ++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/libmultipath/checkers.c b/libmultipath/checkers.c
index f7ddd53..18b1f5e 100644
--- a/libmultipath/checkers.c
+++ b/libmultipath/checkers.c
@@ -7,6 +7,7 @@
 #include "debug.h"
 #include "checkers.h"
 #include "vector.h"
+#include "util.h"
 
 struct checker_class {
 	struct list_head node;
@@ -375,7 +376,23 @@ void checker_get(const char *multipath_dir, struct checker *dst,
 
 int init_checkers(const char *multipath_dir)
 {
+#ifdef LOAD_ALL_SHARED_LIBS
+	static const char *const all_checkers[] = {
+		DIRECTIO,
+		TUR,
+		HP_SW,
+		RDAC,
+		EMC_CLARIION,
+		READSECTOR0,
+		CCISS_TUR,
+	};
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(all_checkers); i++)
+		add_checker_class(multipath_dir, all_checkers[i]);
+#else
 	if (!add_checker_class(multipath_dir, DEFAULT_CHECKER))
 		return 1;
+#endif
 	return 0;
 }
diff --git a/libmultipath/prio.c b/libmultipath/prio.c
index 3a718ba..c92bde7 100644
--- a/libmultipath/prio.c
+++ b/libmultipath/prio.c
@@ -20,8 +20,30 @@ unsigned int get_prio_timeout(unsigned int timeout_ms,
 
 int init_prio (const char *multipath_dir)
 {
+#ifdef LOAD_ALL_SHARED_LIBS
+	static const char *const all_prios[] = {
+		PRIO_ALUA,
+		PRIO_CONST,
+		PRIO_DATACORE,
+		PRIO_EMC,
+		PRIO_HDS,
+		PRIO_HP_SW,
+		PRIO_ONTAP,
+		PRIO_RANDOM,
+		PRIO_RDAC,
+		PRIO_WEIGHTED_PATH,
+		PRIO_SYSFS,
+		PRIO_PATH_LATENCY,
+		PRIO_ANA,
+	};
+	unsigned int i;
+
+	for  (i = 0; i < ARRAY_SIZE(all_prios); i++)
+		add_prio(multipath_dir, all_prios[i]);
+#else
 	if (!add_prio(multipath_dir, DEFAULT_PRIO))
 		return 1;
+#endif
 	return 0;
 }
 
-- 
2.28.0

  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-24 13:36 [PATCH 00/11] multipath-tools: add linker version scripts mwilck
2020-09-24 13:36 ` [PATCH 01/11] libmultipath: find_mpe(): don't match with empty WWID mwilck
2020-09-24 13:36 ` [PATCH 02/11] libmultipath: copy mpp->hwe from pp->hwe mwilck
2020-09-24 20:12   ` Benjamin Marzinski
2020-09-25 16:01     ` Martin Wilck
2020-09-25 16:06       ` Benjamin Marzinski
2020-09-24 13:36 ` [PATCH 03/11] libmultipath: dm_map_present_by_uuid(): fix dm_task_create() call mwilck
2020-09-24 13:36 ` [PATCH 04/11] libdmmp tests: fix compilation mwilck
2020-09-24 13:36 ` [PATCH 05/11] libmultipath: prio: constify some function parameters mwilck
2020-09-24 13:36 ` mwilck [this message]
2020-09-24 20:27   ` [PATCH 06/11] libmultipath: checkers/prio: allow non-lazy .so loading Benjamin Marzinski
2020-09-24 13:36 ` [PATCH 07/11] multipath-tools Makefiles: separate rules for .so and man pages mwilck
2020-09-24 13:36 ` [PATCH 08/11] libmultipath: create separate .so for unit tests mwilck
2020-09-24 23:35   ` Benjamin Marzinski
2020-09-24 13:36 ` [PATCH 09/11] libmultipath: add linker version script mwilck
2020-09-24 13:36 ` [PATCH 10/11] libmpathpersist: " mwilck
2020-09-25  4:00   ` Benjamin Marzinski
2020-09-25 19:52     ` Martin Wilck
2020-09-25 22:10       ` Benjamin Marzinski
     [not found]         ` <20200925223207.GC3384@octiron.msp.redhat.com>
     [not found]           ` <c0a1e44fcc819583d972884aa126c486fc784fa9.camel@suse.com>
2020-09-25 23:22             ` Benjamin Marzinski
2020-09-24 13:36 ` [PATCH 11/11] libmpathcmd: " mwilck
2020-09-25  2:09 ` [PATCH 00/11] multipath-tools: add linker version scripts Benjamin Marzinski
2020-09-25 19:53   ` Martin Wilck

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