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| author | Juri Lelli <juri.lelli@redhat.com> | 2018-02-13 19:55:18 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-02-14 12:01:22 +0100 |
| commit | e5684bbfc3f03480d6ba2150f133630fb510d3eb (patch) | |
| tree | 04ffd26f60f4138ab031e194a43284c9bcdd2ad1 /Documentation/locking | |
| parent | 7246a966b6784a9a72f3d8bcc2784cddee459967 (diff) | |
| download | linux-e5684bbfc3f03480d6ba2150f133630fb510d3eb.tar.gz linux-e5684bbfc3f03480d6ba2150f133630fb510d3eb.tar.bz2 linux-e5684bbfc3f03480d6ba2150f133630fb510d3eb.zip | |
Documentation/locking/lockdep: Update info about states
Commit:
d92a8cfcb37e ("locking/lockdep: Rework FS_RECLAIM annotation")
removed the 'reclaim_fs' lockdep STATE.
Reflect the change in the documentation.
While we are at it, also clarify the formula to calculate the number of state bits.
Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/20180213185519.18186-2-juri.lelli@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/locking')
| -rw-r--r-- | Documentation/locking/lockdep-design.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/locking/lockdep-design.txt b/Documentation/locking/lockdep-design.txt index 9de1c158d44c..e341c2f34e68 100644 --- a/Documentation/locking/lockdep-design.txt +++ b/Documentation/locking/lockdep-design.txt @@ -27,7 +27,8 @@ lock-class. State ----- -The validator tracks lock-class usage history into 4n + 1 separate state bits: +The validator tracks lock-class usage history into 4 * nSTATEs + 1 separate +state bits: - 'ever held in STATE context' - 'ever held as readlock in STATE context' @@ -37,7 +38,6 @@ The validator tracks lock-class usage history into 4n + 1 separate state bits: Where STATE can be either one of (kernel/locking/lockdep_states.h) - hardirq - softirq - - reclaim_fs - 'ever used' [ == !unused ] |