mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 09:05:12 +07:00
d6672c5018
fix: kernel/built-in.o: In function `lockdep_stats_show': lockdep_proc.c:(.text+0x3cb2f): undefined reference to `lockdep_count_forward_deps' kernel/built-in.o: In function `l_show': lockdep_proc.c:(.text+0x3d02b): undefined reference to `lockdep_count_forward_deps' lockdep_proc.c:(.text+0x3d047): undefined reference to `lockdep_count_backward_deps' Signed-off-by: Ingo Molnar <mingo@elte.hu>
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*
|
|
* kernel/lockdep_internals.h
|
|
*
|
|
* Runtime locking correctness validator
|
|
*
|
|
* lockdep subsystem internal functions and variables.
|
|
*/
|
|
|
|
/*
|
|
* MAX_LOCKDEP_ENTRIES is the maximum number of lock dependencies
|
|
* we track.
|
|
*
|
|
* We use the per-lock dependency maps in two ways: we grow it by adding
|
|
* every to-be-taken lock to all currently held lock's own dependency
|
|
* table (if it's not there yet), and we check it for lock order
|
|
* conflicts and deadlocks.
|
|
*/
|
|
#define MAX_LOCKDEP_ENTRIES 8192UL
|
|
|
|
#define MAX_LOCKDEP_CHAINS_BITS 14
|
|
#define MAX_LOCKDEP_CHAINS (1UL << MAX_LOCKDEP_CHAINS_BITS)
|
|
|
|
#define MAX_LOCKDEP_CHAIN_HLOCKS (MAX_LOCKDEP_CHAINS*5)
|
|
|
|
/*
|
|
* Stack-trace: tightly packed array of stack backtrace
|
|
* addresses. Protected by the hash_lock.
|
|
*/
|
|
#define MAX_STACK_TRACE_ENTRIES 262144UL
|
|
|
|
extern struct list_head all_lock_classes;
|
|
extern struct lock_chain lock_chains[];
|
|
|
|
extern void
|
|
get_usage_chars(struct lock_class *class, char *c1, char *c2, char *c3, char *c4);
|
|
|
|
extern const char * __get_key_name(struct lockdep_subclass_key *key, char *str);
|
|
|
|
struct lock_class *lock_chain_get_class(struct lock_chain *chain, int i);
|
|
|
|
extern unsigned long nr_lock_classes;
|
|
extern unsigned long nr_list_entries;
|
|
extern unsigned long nr_lock_chains;
|
|
extern int nr_chain_hlocks;
|
|
extern unsigned long nr_stack_trace_entries;
|
|
|
|
extern unsigned int nr_hardirq_chains;
|
|
extern unsigned int nr_softirq_chains;
|
|
extern unsigned int nr_process_chains;
|
|
extern unsigned int max_lockdep_depth;
|
|
extern unsigned int max_recursion_depth;
|
|
|
|
#ifdef CONFIG_PROVE_LOCKING
|
|
extern unsigned long lockdep_count_forward_deps(struct lock_class *);
|
|
extern unsigned long lockdep_count_backward_deps(struct lock_class *);
|
|
#else
|
|
static inline unsigned long
|
|
lockdep_count_forward_deps(struct lock_class *class)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline unsigned long
|
|
lockdep_count_backward_deps(struct lock_class *class)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_DEBUG_LOCKDEP
|
|
/*
|
|
* Various lockdep statistics:
|
|
*/
|
|
extern atomic_t chain_lookup_hits;
|
|
extern atomic_t chain_lookup_misses;
|
|
extern atomic_t hardirqs_on_events;
|
|
extern atomic_t hardirqs_off_events;
|
|
extern atomic_t redundant_hardirqs_on;
|
|
extern atomic_t redundant_hardirqs_off;
|
|
extern atomic_t softirqs_on_events;
|
|
extern atomic_t softirqs_off_events;
|
|
extern atomic_t redundant_softirqs_on;
|
|
extern atomic_t redundant_softirqs_off;
|
|
extern atomic_t nr_unused_locks;
|
|
extern atomic_t nr_cyclic_checks;
|
|
extern atomic_t nr_cyclic_check_recursions;
|
|
extern atomic_t nr_find_usage_forwards_checks;
|
|
extern atomic_t nr_find_usage_forwards_recursions;
|
|
extern atomic_t nr_find_usage_backwards_checks;
|
|
extern 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
|