[tip: locking/core] lockdep: Clarify size for LOCKDEP_*_BITS configs

[tip-bot2 for Carlos Llamas]

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@xxxxxxxxxx>
AuthorDate:    Thu, 24 Oct 2024 18:36:27 
Committer:     Boqun Feng <boqun.feng@xxxxxxxxx>
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@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Boqun Feng <boqun.feng@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Waiman Long <longman@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Carlos Llamas <cmllamas@xxxxxxxxxx>
Acked-by: Waiman Long <longman@xxxxxxxxxx>
Signed-off-by: Boqun Feng <boqun.feng@xxxxxxxxx>
Link: https://lore.kernel.org/r/20241024183631.643450-3-cmllamas@xxxxxxxxxx
---
 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