linux-kernel - [tip:core/rcu] rcu: Merge per-RCU-flavor initialization into pre-existing macro

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <tip-65cf8f866fc0fb40fa9daaded7e938a886d6f7c5@git.kernel.org>
Date:	Sun, 23 Aug 2009 09:02:31 GMT
From:	"tip-bot for Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulmck@...ux.vnet.ibm.com,
	hpa@...or.com, mingo@...hat.com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:core/rcu] rcu: Merge per-RCU-flavor initialization into pre-existing macro

Commit-ID:  65cf8f866fc0fb40fa9daaded7e938a886d6f7c5
Gitweb:     http://git.kernel.org/tip/65cf8f866fc0fb40fa9daaded7e938a886d6f7c5
Author:     Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
AuthorDate: Sat, 22 Aug 2009 13:56:49 -0700
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 23 Aug 2009 10:32:38 +0200

rcu: Merge per-RCU-flavor initialization into pre-existing macro

Rename the RCU_DATA_PTR_INIT() macro to RCU_INIT_FLAVOR() and
make it do the rcu_init_one() and rcu_boot_init_percpu_data()
calls.  Merge the loop that was in the original macro with the
loops that were in __rcu_init().

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: laijs@...fujitsu.com
Cc: dipankar@...ibm.com
Cc: akpm@...ux-foundation.org
Cc: mathieu.desnoyers@...ymtl.ca
Cc: josht@...ux.vnet.ibm.com
Cc: dvhltc@...ibm.com
Cc: niv@...ibm.com
Cc: peterz@...radead.org
Cc: rostedt@...dmis.org
LKML-Reference: <12509746133916-git-send-email->
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/rcutree.c |   14 +++++---------
 1 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 4d71d4e..7c51508 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -1543,8 +1543,9 @@ static void __init rcu_init_one(struct rcu_state *rsp)
  * Helper macro for __rcu_init().  To be used nowhere else!
  * Assigns leaf node pointers into each CPU's rcu_data structure.
  */
-#define RCU_DATA_PTR_INIT(rsp, rcu_data) \
+#define RCU_INIT_FLAVOR(rsp, rcu_data) \
 do { \
+	rcu_init_one(rsp); \
 	rnp = (rsp)->level[NUM_RCU_LVLS - 1]; \
 	j = 0; \
 	for_each_possible_cpu(i) { \
@@ -1552,6 +1553,7 @@ do { \
 			j++; \
 		per_cpu(rcu_data, i).mynode = &rnp[j]; \
 		(rsp)->rda[i] = &per_cpu(rcu_data, i); \
+		rcu_boot_init_percpu_data(i, rsp); \
 	} \
 } while (0)
 
@@ -1565,14 +1567,8 @@ void __init __rcu_init(void)
 #ifdef CONFIG_RCU_CPU_STALL_DETECTOR
 	printk(KERN_INFO "RCU-based detection of stalled CPUs is enabled.\n");
 #endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */
-	rcu_init_one(&rcu_sched_state);
-	RCU_DATA_PTR_INIT(&rcu_sched_state, rcu_sched_data);
-	for_each_possible_cpu(i)
-		rcu_boot_init_percpu_data(i, &rcu_sched_state);
-	rcu_init_one(&rcu_bh_state);
-	RCU_DATA_PTR_INIT(&rcu_bh_state, rcu_bh_data);
-	for_each_possible_cpu(i)
-		rcu_boot_init_percpu_data(i, &rcu_bh_state);
+	RCU_INIT_FLAVOR(&rcu_sched_state, rcu_sched_data);
+	RCU_INIT_FLAVOR(&rcu_bh_state, rcu_bh_data);
 	open_softirq(RCU_SOFTIRQ, rcu_process_callbacks);
 }
 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/