redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

lockdep: further simplify mark_lock_irq() helpers 

take away another parameter

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Peter Zijlstra 2009-01-22 16:09:59 +01:00 committed by Ingo Molnar
parent 604de3b5b6
commit f989209e2f
1 changed files with 31 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
kernel/lockdep.c
View File

@ -2025,14 +2025,35 @@ static inline const char *state_rname(enum lock_usage_bit bit)
return state_rnames[bit >> 2];
}
static int exclusive_bit(int new_bit)
{
/*
* USED_IN
* USED_IN_READ
* ENABLED
* ENABLED_READ
*
* bit 0 - write/read
* bit 1 - used_in/enabled
* bit 2+ state
*/
int state = new_bit & ~3;
int dir = new_bit & 2;
return state | (dir ^ 2);
}
static int
mark_lock_irq_used_in(struct task_struct *curr, struct held_lock *this,
int new_bit, int excl_bit,
int new_bit,
int (*verbose)(struct lock_class *class))
{
const char *name = state_name(new_bit);
const char *rname = state_rname(new_bit);
int excl_bit = exclusive_bit(new_bit);
if (!valid_state(curr, this, new_bit, excl_bit))
return 0;
if (!valid_state(curr, this, new_bit, excl_bit + 1))
@ -2059,12 +2080,14 @@ mark_lock_irq_used_in(struct task_struct *curr, struct held_lock *this,
static int
mark_lock_irq_used_in_read(struct task_struct *curr, struct held_lock *this,
int new_bit, int excl_bit,
int new_bit,
int (*verbose)(struct lock_class *class))
{
const char *name = state_name(new_bit);
const char *rname = state_rname(new_bit);
int excl_bit = exclusive_bit(new_bit);
if (!valid_state(curr, this, new_bit, excl_bit))
return 0;
/*
@ -2081,12 +2104,14 @@ mark_lock_irq_used_in_read(struct task_struct *curr, struct held_lock *this,
static int
mark_lock_irq_enabled(struct task_struct *curr, struct held_lock *this,
int new_bit, int excl_bit,
int new_bit,
int (*verbose)(struct lock_class *class))
{
const char *name = state_name(new_bit);
const char *rname = state_rname(new_bit);
int excl_bit = exclusive_bit(new_bit);
if (!valid_state(curr, this, new_bit, excl_bit))
return 0;
if (!valid_state(curr, this, new_bit, excl_bit + 1))
@ -2114,12 +2139,14 @@ mark_lock_irq_enabled(struct task_struct *curr, struct held_lock *this,
static int
mark_lock_irq_enabled_read(struct task_struct *curr, struct held_lock *this,
int new_bit, int excl_bit,
int new_bit,
int (*verbose)(struct lock_class *class))
{
const char *name = state_name(new_bit);
const char *rname = state_rname(new_bit);
int excl_bit = exclusive_bit(new_bit);
if (!valid_state(curr, this, new_bit, excl_bit))
return 0;
#if STRICT_READ_CHECKS
@ -2144,54 +2171,42 @@ static int mark_lock_irq(struct task_struct *curr, struct held_lock *this,
switch(new_bit) {
case LOCK_USED_IN_HARDIRQ:
return mark_lock_irq_used_in(curr, this, new_bit,
LOCK_ENABLED_HARDIRQ,
hardirq_verbose);
case LOCK_USED_IN_SOFTIRQ:
return mark_lock_irq_used_in(curr, this, new_bit,
LOCK_ENABLED_SOFTIRQ,
softirq_verbose);
case LOCK_USED_IN_RECLAIM_FS:
return mark_lock_irq_used_in(curr, this, new_bit,
LOCK_ENABLED_RECLAIM_FS,
reclaim_verbose);
case LOCK_USED_IN_HARDIRQ_READ:
return mark_lock_irq_used_in_read(curr, this, new_bit,
LOCK_ENABLED_HARDIRQ,
hardirq_verbose);
case LOCK_USED_IN_SOFTIRQ_READ:
return mark_lock_irq_used_in_read(curr, this, new_bit,
LOCK_ENABLED_SOFTIRQ,
softirq_verbose);
case LOCK_USED_IN_RECLAIM_FS_READ:
return mark_lock_irq_used_in_read(curr, this, new_bit,
LOCK_ENABLED_RECLAIM_FS,
reclaim_verbose);
case LOCK_ENABLED_HARDIRQ:
return mark_lock_irq_enabled(curr, this, new_bit,
LOCK_USED_IN_HARDIRQ,
hardirq_verbose);
case LOCK_ENABLED_SOFTIRQ:
return mark_lock_irq_enabled(curr, this, new_bit,
LOCK_USED_IN_SOFTIRQ,
softirq_verbose);
case LOCK_ENABLED_RECLAIM_FS:
return mark_lock_irq_enabled(curr, this, new_bit,
LOCK_USED_IN_RECLAIM_FS,
reclaim_verbose);
case LOCK_ENABLED_HARDIRQ_READ:
return mark_lock_irq_enabled_read(curr, this, new_bit,
LOCK_USED_IN_HARDIRQ,
hardirq_verbose);
case LOCK_ENABLED_SOFTIRQ_READ:
return mark_lock_irq_enabled_read(curr, this, new_bit,
LOCK_USED_IN_SOFTIRQ,
softirq_verbose);
case LOCK_ENABLED_RECLAIM_FS_READ:
return mark_lock_irq_enabled_read(curr, this, new_bit,
LOCK_USED_IN_RECLAIM_FS,
reclaim_verbose);
default: