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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 17:29:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 17:29:53 -0700
commit492f59f526d95e73028f57bff475b4bbe3c8cb72 (patch)
tree8419a65de08183e350a468433fb3f4205e49ae80
parentf945b7abcb6cfd3106c9855aa2aa6e4396a19d76 (diff)
parent7bee946358c3cb957d4aa648fc5ab3cad0b232d0 (diff)
downloadop-kernel-dev-492f59f526d95e73028f57bff475b4bbe3c8cb72.zip
op-kernel-dev-492f59f526d95e73028f57bff475b4bbe3c8cb72.tar.gz
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
-rw-r--r--include/linux/irqflags.h8
-rw-r--r--kernel/lockdep.c16
-rw-r--r--kernel/softirq.c4
-rw-r--r--lib/locking-selftest.c4
4 files changed, 13 insertions, 19 deletions
diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index 74bde13..b02a3f1 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -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
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 3673a3f..981cd48 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -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;
/*
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 57d3f67..4877516 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -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();
diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 280332c..619313e 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -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();
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