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lockdep: move state bit definitions around 

For convenience later.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-01-22 14:18:40 +01:00 committed by Ingo Molnar
parent 5346417e17
commit 9851673bc3
3 changed files with 56 additions and 45 deletions
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49
include/linux/lockdep.h
View File

@ -20,51 +20,10 @@ struct lockdep_map;
#include <linux/stacktrace.h> #include <linux/stacktrace.h>
/* /*
* Lock-class usage-state bits: * We'd rather not expose kernel/lockdep_states.h this wide, but we do need
* the total number of states... :-(
*/ */
enum lock_usage_bit #define XXX_LOCK_USAGE_STATES (1+3*4)
{
LOCK_USED = 0,
LOCK_USED_IN_HARDIRQ,
LOCK_USED_IN_SOFTIRQ,
LOCK_USED_IN_RECLAIM_FS,
LOCK_ENABLED_SOFTIRQ,
LOCK_ENABLED_HARDIRQ,
LOCK_ENABLED_RECLAIM_FS,
LOCK_USED_IN_HARDIRQ_READ,
LOCK_USED_IN_SOFTIRQ_READ,
LOCK_USED_IN_RECLAIM_FS_READ,
LOCK_ENABLED_SOFTIRQ_READ,
LOCK_ENABLED_HARDIRQ_READ,
LOCK_ENABLED_RECLAIM_FS_READ,
LOCK_USAGE_STATES
};
/*
* Usage-state bitmasks:
*/
#define LOCKF_USED (1 << LOCK_USED)
#define LOCKF_USED_IN_HARDIRQ (1 << LOCK_USED_IN_HARDIRQ)
#define LOCKF_USED_IN_SOFTIRQ (1 << LOCK_USED_IN_SOFTIRQ)
#define LOCKF_USED_IN_RECLAIM_FS (1 << LOCK_USED_IN_RECLAIM_FS)
#define LOCKF_ENABLED_HARDIRQ (1 << LOCK_ENABLED_HARDIRQ)
#define LOCKF_ENABLED_SOFTIRQ (1 << LOCK_ENABLED_SOFTIRQ)
#define LOCKF_ENABLED_RECLAIM_FS (1 << LOCK_ENABLED_RECLAIM_FS)
#define LOCKF_ENABLED_IRQ (LOCKF_ENABLED_HARDIRQ | LOCKF_ENABLED_SOFTIRQ)
#define LOCKF_USED_IN_IRQ (LOCKF_USED_IN_HARDIRQ | LOCKF_USED_IN_SOFTIRQ)
#define LOCKF_USED_IN_HARDIRQ_READ (1 << LOCK_USED_IN_HARDIRQ_READ)
#define LOCKF_USED_IN_SOFTIRQ_READ (1 << LOCK_USED_IN_SOFTIRQ_READ)
#define LOCKF_USED_IN_RECLAIM_FS_READ (1 << LOCK_USED_IN_RECLAIM_FS_READ)
#define LOCKF_ENABLED_HARDIRQ_READ (1 << LOCK_ENABLED_HARDIRQ_READ)
#define LOCKF_ENABLED_SOFTIRQ_READ (1 << LOCK_ENABLED_SOFTIRQ_READ)
#define LOCKF_ENABLED_RECLAIM_FS_READ (1 << LOCK_ENABLED_RECLAIM_FS_READ)
#define LOCKF_ENABLED_IRQ_READ \
(LOCKF_ENABLED_HARDIRQ_READ | LOCKF_ENABLED_SOFTIRQ_READ)
#define LOCKF_USED_IN_IRQ_READ \
(LOCKF_USED_IN_HARDIRQ_READ | LOCKF_USED_IN_SOFTIRQ_READ)
#define MAX_LOCKDEP_SUBCLASSES 8UL #define MAX_LOCKDEP_SUBCLASSES 8UL
@ -105,7 +64,7 @@ struct lock_class {
* IRQ/softirq usage tracking bits: * IRQ/softirq usage tracking bits:
*/ */
unsigned long usage_mask; unsigned long usage_mask;
struct stack_trace usage_traces[LOCK_USAGE_STATES]; struct stack_trace usage_traces[XXX_LOCK_USAGE_STATES];
/* /*
* These fields represent a directed graph of lock dependencies, * These fields represent a directed graph of lock dependencies,

46
kernel/lockdep_internals.h
View File

@ -6,6 +6,52 @@
* lockdep subsystem internal functions and variables. * lockdep subsystem internal functions and variables.
*/ */
/*
* Lock-class usage-state bits:
*/
enum lock_usage_bit {
LOCK_USED = 0,
LOCK_USED_IN_HARDIRQ,
LOCK_USED_IN_SOFTIRQ,
LOCK_USED_IN_RECLAIM_FS,
LOCK_ENABLED_SOFTIRQ,
LOCK_ENABLED_HARDIRQ,
LOCK_ENABLED_RECLAIM_FS,
LOCK_USED_IN_HARDIRQ_READ,
LOCK_USED_IN_SOFTIRQ_READ,
LOCK_USED_IN_RECLAIM_FS_READ,
LOCK_ENABLED_SOFTIRQ_READ,
LOCK_ENABLED_HARDIRQ_READ,
LOCK_ENABLED_RECLAIM_FS_READ,
LOCK_USAGE_STATES
};
/*
* Usage-state bitmasks:
*/
#define LOCKF_USED (1 << LOCK_USED)
#define LOCKF_USED_IN_HARDIRQ (1 << LOCK_USED_IN_HARDIRQ)
#define LOCKF_USED_IN_SOFTIRQ (1 << LOCK_USED_IN_SOFTIRQ)
#define LOCKF_USED_IN_RECLAIM_FS (1 << LOCK_USED_IN_RECLAIM_FS)
#define LOCKF_ENABLED_HARDIRQ (1 << LOCK_ENABLED_HARDIRQ)
#define LOCKF_ENABLED_SOFTIRQ (1 << LOCK_ENABLED_SOFTIRQ)
#define LOCKF_ENABLED_RECLAIM_FS (1 << LOCK_ENABLED_RECLAIM_FS)
#define LOCKF_ENABLED_IRQ (LOCKF_ENABLED_HARDIRQ | LOCKF_ENABLED_SOFTIRQ)
#define LOCKF_USED_IN_IRQ (LOCKF_USED_IN_HARDIRQ | LOCKF_USED_IN_SOFTIRQ)
#define LOCKF_USED_IN_HARDIRQ_READ (1 << LOCK_USED_IN_HARDIRQ_READ)
#define LOCKF_USED_IN_SOFTIRQ_READ (1 << LOCK_USED_IN_SOFTIRQ_READ)
#define LOCKF_USED_IN_RECLAIM_FS_READ (1 << LOCK_USED_IN_RECLAIM_FS_READ)
#define LOCKF_ENABLED_HARDIRQ_READ (1 << LOCK_ENABLED_HARDIRQ_READ)
#define LOCKF_ENABLED_SOFTIRQ_READ (1 << LOCK_ENABLED_SOFTIRQ_READ)
#define LOCKF_ENABLED_RECLAIM_FS_READ (1 << LOCK_ENABLED_RECLAIM_FS_READ)
#define LOCKF_ENABLED_IRQ_READ \
(LOCKF_ENABLED_HARDIRQ_READ | LOCKF_ENABLED_SOFTIRQ_READ)
#define LOCKF_USED_IN_IRQ_READ \
(LOCKF_USED_IN_HARDIRQ_READ | LOCKF_USED_IN_SOFTIRQ_READ)
/* /*
* MAX_LOCKDEP_ENTRIES is the maximum number of lock dependencies * MAX_LOCKDEP_ENTRIES is the maximum number of lock dependencies
* we track. * we track.

6
kernel/lockdep_states.h
View File

@ -1,3 +1,9 @@
/*
* Lockdep states,
*
* please update XXX_LOCK_USAGE_STATES in include/linux/lockdep.h whenever
* you add one, or come up with a nice dynamic solution.
*/
LOCKDEP_STATE(HARDIRQ) LOCKDEP_STATE(HARDIRQ)
LOCKDEP_STATE(SOFTIRQ) LOCKDEP_STATE(SOFTIRQ)
LOCKDEP_STATE(RECLAIM_FS) LOCKDEP_STATE(RECLAIM_FS)