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lockdep: Clarify size for LOCKDEP_*_BITS configs

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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@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20241024183631.643450-3-cmllamas@google.com
This commit is contained in:
Carlos Llamas 2024-10-24 18:36:27 +00:00 committed by Boqun Feng
parent e638072e61
commit 88a79e88a9
1 changed files with 5 additions and 5 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

10
lib/Kconfig.debug
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@ -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