linux-kernel - [tip:core/urgent] rcu: Kconfig help needs to say that TREE_PREEMPT

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]

Date:	Thu, 17 Sep 2009 22:10:43 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, Valdis.Kletnieks@...edu,
	paulmck@...ux.vnet.ibm.com, hpa@...or.com, mingo@...hat.com,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:core/urgent] rcu: Kconfig help needs to say that TREE_PREEMPT_RCU scales down

Commit-ID:  bbe3eae8bb039b5ffd64a6e3d1a0deaa1f3cbae9
Gitweb:     http://git.kernel.org/tip/bbe3eae8bb039b5ffd64a6e3d1a0deaa1f3cbae9
Author:     Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
AuthorDate: Sun, 13 Sep 2009 09:15:08 -0700
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 18 Sep 2009 00:05:53 +0200

rcu: Kconfig help needs to say that TREE_PREEMPT_RCU scales down

To quote Valdis:

    This leaves somebody who has a laptop wondering which
    choice is best for a system with only one or two cores that
    has CONFIG_PREEMPT defined. One choice says it scales down
    nicely, the other explicitly has a 'depends on PREEMPT'
    attached to it...

So add "scales down nicely" to TREE_PREEMPT_RCU to match that of
TREE_RCU.

Suggested-by: Valdis Kletnieks <Valdis.Kletnieks@...edu>
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: josh@...htriplett.org
Cc: dvhltc@...ibm.com
Cc: niv@...ibm.com
Cc: peterz@...radead.org
Cc: rostedt@...dmis.org
LKML-Reference: <12528585112362-git-send-email->
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 init/Kconfig |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index 8e8b76d..4c2c936 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -331,7 +331,8 @@ config TREE_PREEMPT_RCU
 	  This option selects the RCU implementation that is
 	  designed for very large SMP systems with hundreds or
 	  thousands of CPUs, but for which real-time response
-	  is also required.
+	  is also required.  It also scales down nicely to
+	  smaller systems.
 
 endchoice
 
--
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/