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Merge branch 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  locking: rename trace_softirq_[enter|exit] => lockdep_softirq_[enter|exit]
  lockdep: remove duplicate CONFIG_DEBUG_LOCKDEP definitions
  lockdep: require framepointers for x86
  lockdep: remove extra "irq" string
  lockdep: fix incorrect state name
This commit is contained in:
Linus Torvalds 2009-04-03 17:29:53 -07:00
parent f945b7abcb 7bee946358
commit 492f59f526
4 changed files with 13 additions and 19 deletions
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8
include/linux/irqflags.h
View File

@ -24,8 +24,8 @@
# define trace_softirqs_enabled(p) ((p)->softirqs_enabled)
# define trace_hardirq_enter() do { current->hardirq_context++; } while (0)
# define trace_hardirq_exit() do { current->hardirq_context--; } while (0)
# define trace_softirq_enter() do { current->softirq_context++; } while (0)
# define trace_softirq_exit() do { current->softirq_context--; } while (0)
# define lockdep_softirq_enter() do { current->softirq_context++; } while (0)
# define lockdep_softirq_exit() do { current->softirq_context--; } while (0)
# define INIT_TRACE_IRQFLAGS .softirqs_enabled = 1,
#else
# define trace_hardirqs_on() do { } while (0)
@ -38,8 +38,8 @@
# define trace_softirqs_enabled(p) 0
# define trace_hardirq_enter() do { } while (0)
# define trace_hardirq_exit() do { } while (0)
# define trace_softirq_enter() do { } while (0)
# define trace_softirq_exit() do { } while (0)
# define lockdep_softirq_enter() do { } while (0)
# define lockdep_softirq_exit() do { } while (0)
# define INIT_TRACE_IRQFLAGS
#endif

16
kernel/lockdep.c
View File

@ -433,13 +433,6 @@ atomic_t nr_find_usage_forwards_checks;
atomic_t nr_find_usage_forwards_recursions;
atomic_t nr_find_usage_backwards_checks;
atomic_t nr_find_usage_backwards_recursions;
# define debug_atomic_inc(ptr) atomic_inc(ptr)
# define debug_atomic_dec(ptr) atomic_dec(ptr)
# define debug_atomic_read(ptr) atomic_read(ptr)
#else
# define debug_atomic_inc(ptr) do { } while (0)
# define debug_atomic_dec(ptr) do { } while (0)
# define debug_atomic_read(ptr) 0
#endif
/*
@ -1900,9 +1893,9 @@ print_irq_inversion_bug(struct task_struct *curr, struct lock_class *other,
curr->comm, task_pid_nr(curr));
print_lock(this);
if (forwards)
printk("but this lock took another, %s-irq-unsafe lock in the past:\n", irqclass);
printk("but this lock took another, %s-unsafe lock in the past:\n", irqclass);
else
printk("but this lock was taken by another, %s-irq-safe lock in the past:\n", irqclass);
printk("but this lock was taken by another, %s-safe lock in the past:\n", irqclass);
print_lock_name(other);
printk("\n\nand interrupts could create inverse lock ordering between them.\n\n");
@ -2015,7 +2008,8 @@ typedef int (*check_usage_f)(struct task_struct *, struct held_lock *,
enum lock_usage_bit bit, const char *name);
static int
mark_lock_irq(struct task_struct *curr, struct held_lock *this, int new_bit)
mark_lock_irq(struct task_struct *curr, struct held_lock *this,
enum lock_usage_bit new_bit)
{
int excl_bit = exclusive_bit(new_bit);
int read = new_bit & 1;
@ -2043,7 +2037,7 @@ mark_lock_irq(struct task_struct *curr, struct held_lock *this, int new_bit)
* states.
*/
if ((!read || !dir || STRICT_READ_CHECKS) &&
!usage(curr, this, excl_bit, state_name(new_bit)))
!usage(curr, this, excl_bit, state_name(new_bit & ~1)))
return 0;
/*

4
kernel/softirq.c
View File

@ -180,7 +180,7 @@ asmlinkage void __do_softirq(void)
account_system_vtime(current);
__local_bh_disable((unsigned long)__builtin_return_address(0));
trace_softirq_enter();
lockdep_softirq_enter();
cpu = smp_processor_id();
restart:
@ -220,7 +220,7 @@ restart:
if (pending)
wakeup_softirqd();
trace_softirq_exit();
lockdep_softirq_exit();
account_system_vtime(current);
_local_bh_enable();

4
lib/locking-selftest.c
View File

@ -157,11 +157,11 @@ static void init_shared_classes(void)
#define SOFTIRQ_ENTER() \
local_bh_disable(); \
local_irq_disable(); \
trace_softirq_enter(); \
lockdep_softirq_enter(); \
WARN_ON(!in_softirq());
#define SOFTIRQ_EXIT() \
trace_softirq_exit(); \
lockdep_softirq_exit(); \
local_irq_enable(); \
local_bh_enable();