linux-kernel - [tip: locking/core] lockdep: Clarify size for LOCKDEP_*

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: <173506642427.399.15194752914482242671.tip-bot2@tip-bot2>
Date: Tue, 24 Dec 2024 18:53:44 -0000
From: "tip-bot2 for Carlos Llamas" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 Peter Zijlstra <peterz@...radead.org>, Boqun Feng <boqun.feng@...il.com>,
 Ingo Molnar <mingo@...hat.com>, Waiman Long <longman@...hat.com>,
 Will Deacon <will@...nel.org>, Carlos Llamas <cmllamas@...gle.com>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: locking/core] lockdep: Clarify size for LOCKDEP_*_BITS configs

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     88a79e88a97cb9309bb48a472be2bf1316d40adc
Gitweb:        https://git.kernel.org/tip/88a79e88a97cb9309bb48a472be2bf1316d40adc
Author:        Carlos Llamas <cmllamas@...gle.com>
AuthorDate:    Thu, 24 Oct 2024 18:36:27 
Committer:     Boqun Feng <boqun.feng@...il.com>
CommitterDate: Sun, 15 Dec 2024 11:49:35 -08:00

lockdep: Clarify size for LOCKDEP_*_BITS configs

The LOCKDEP_*_BITS configs control the size of internal structures used
by lockdep. The size is calculated as a power of two of the configured
value (e.g. 16 => 64KB). Update these descriptions to more accurately
reflect this, as "Bitsize" can be misleading.

Suggested-by: Andrew Morton <akpm@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Waiman Long <longman@...hat.com>
Cc: Will Deacon <will@...nel.org>
Signed-off-by: Carlos Llamas <cmllamas@...gle.com>
Acked-by: Waiman Long <longman@...hat.com>
Signed-off-by: Boqun Feng <boqun.feng@...il.com>
Link: https://lore.kernel.org/r/20241024183631.643450-3-cmllamas@google.com
---
 lib/Kconfig.debug | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 7635b36..cf2a41d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1502,7 +1502,7 @@ config LOCKDEP_SMALL
 	bool
 
 config LOCKDEP_BITS
-	int "Bitsize for MAX_LOCKDEP_ENTRIES"
+	int "Size for MAX_LOCKDEP_ENTRIES (as Nth power of 2)"
 	depends on LOCKDEP && !LOCKDEP_SMALL
 	range 10 24
 	default 15
@@ -1510,7 +1510,7 @@ config LOCKDEP_BITS
 	  Try increasing this value if you hit "BUG: MAX_LOCKDEP_ENTRIES too low!" message.
 
 config LOCKDEP_CHAINS_BITS
-	int "Bitsize for MAX_LOCKDEP_CHAINS"
+	int "Size for MAX_LOCKDEP_CHAINS (as Nth power of 2)"
 	depends on LOCKDEP && !LOCKDEP_SMALL
 	range 10 21
 	default 16
@@ -1518,7 +1518,7 @@ config LOCKDEP_CHAINS_BITS
 	  Try increasing this value if you hit "BUG: MAX_LOCKDEP_CHAINS too low!" message.
 
 config LOCKDEP_STACK_TRACE_BITS
-	int "Bitsize for MAX_STACK_TRACE_ENTRIES"
+	int "Size for MAX_STACK_TRACE_ENTRIES (as Nth power of 2)"
 	depends on LOCKDEP && !LOCKDEP_SMALL
 	range 10 26
 	default 19
@@ -1526,7 +1526,7 @@ config LOCKDEP_STACK_TRACE_BITS
 	  Try increasing this value if you hit "BUG: MAX_STACK_TRACE_ENTRIES too low!" message.
 
 config LOCKDEP_STACK_TRACE_HASH_BITS
-	int "Bitsize for STACK_TRACE_HASH_SIZE"
+	int "Size for STACK_TRACE_HASH_SIZE (as Nth power of 2)"
 	depends on LOCKDEP && !LOCKDEP_SMALL
 	range 10 26
 	default 14
@@ -1534,7 +1534,7 @@ config LOCKDEP_STACK_TRACE_HASH_BITS
 	  Try increasing this value if you need large STACK_TRACE_HASH_SIZE.
 
 config LOCKDEP_CIRCULAR_QUEUE_BITS
-	int "Bitsize for elements in circular_queue struct"
+	int "Size for elements in circular_queue struct (as Nth power of 2)"
 	depends on LOCKDEP
 	range 10 26
 	default 12