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Merge commit 'v2.6.34-rc6' into core/locking

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Merge reason: Further lockdep patches depend on per cpu updates
made in -rc1.
This commit is contained in:
Frederic Weisbecker
2010-04-30 19:11:13 +02:00
parent bd6d29c25b 66f41d4c5c
commit 868c522b1b
8855 changed files with 419700 additions and 178252 deletions
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32
kernel/lockdep.c
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@@ -43,6 +43,7 @@
#include <linux/ftrace.h>
#include <linux/stringify.h>
#include <linux/bitops.h>
#include <linux/gfp.h>
#include <asm/sections.h>
@@ -569,9 +570,6 @@ static int static_obj(void *obj)
unsigned long start = (unsigned long) &_stext,
end = (unsigned long) &_end,
addr = (unsigned long) obj;
#ifdef CONFIG_SMP
int i;
#endif
/*
* static variable?
@@ -582,24 +580,16 @@ static int static_obj(void *obj)
if (arch_is_kernel_data(addr))
return 1;
#ifdef CONFIG_SMP
/*
* percpu var?
* in-kernel percpu var?
*/
for_each_possible_cpu(i) {
start = (unsigned long) &__per_cpu_start + per_cpu_offset(i);
end = (unsigned long) &__per_cpu_start + PERCPU_ENOUGH_ROOM
+ per_cpu_offset(i);
if ((addr >= start) && (addr < end))
return 1;
}
#endif
if (is_kernel_percpu_address(addr))
return 1;
/*
* module var?
* module static or percpu var?
*/
return is_module_address(addr);
return is_module_address(addr) || is_module_percpu_address(addr);
}
/*
@@ -3198,8 +3188,6 @@ void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
{
unsigned long flags;
trace_lock_acquire(lock, subclass, trylock, read, check, nest_lock, ip);
if (unlikely(current->lockdep_recursion))
return;
@@ -3207,6 +3195,7 @@ void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
check_flags(flags);
current->lockdep_recursion = 1;
trace_lock_acquire(lock, subclass, trylock, read, check, nest_lock, ip);
__lock_acquire(lock, subclass, trylock, read, check,
irqs_disabled_flags(flags), nest_lock, ip, 0);
current->lockdep_recursion = 0;
@@ -3219,14 +3208,13 @@ void lock_release(struct lockdep_map *lock, int nested,
{
unsigned long flags;
trace_lock_release(lock, nested, ip);
if (unlikely(current->lockdep_recursion))
return;
raw_local_irq_save(flags);
check_flags(flags);
current->lockdep_recursion = 1;
trace_lock_release(lock, nested, ip);
__lock_release(lock, nested, ip);
current->lockdep_recursion = 0;
raw_local_irq_restore(flags);
@@ -3400,8 +3388,6 @@ void lock_contended(struct lockdep_map *lock, unsigned long ip)
{
unsigned long flags;
trace_lock_contended(lock, ip);
if (unlikely(!lock_stat))
return;
@@ -3411,6 +3397,7 @@ void lock_contended(struct lockdep_map *lock, unsigned long ip)
raw_local_irq_save(flags);
check_flags(flags);
current->lockdep_recursion = 1;
trace_lock_contended(lock, ip);
__lock_contended(lock, ip);
current->lockdep_recursion = 0;
raw_local_irq_restore(flags);
@@ -3809,6 +3796,7 @@ void lockdep_rcu_dereference(const char *file, const int line)
printk("%s:%d invoked rcu_dereference_check() without protection!\n",
file, line);
printk("\nother info that might help us debug this:\n\n");
printk("\nrcu_scheduler_active = %d, debug_locks = %d\n", rcu_scheduler_active, debug_locks);
lockdep_print_held_locks(curr);
printk("\nstack backtrace:\n");
dump_stack();