diff options
| author | Huang, Ying <ying.huang@intel.com> | 2008-06-20 16:39:21 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-20 12:21:33 +0200 |
| commit | 443cd507ce7f78c6f8742b72736585c031d5a921 (patch) | |
| tree | 256182911b08287661beca1f90455b14cd0b9151 /kernel/lockdep_internals.h | |
| parent | 2429e4ee78e2fa40f82a4572dd21d4f3b4de9325 (diff) | |
| download | lwn-443cd507ce7f78c6f8742b72736585c031d5a921.tar.gz lwn-443cd507ce7f78c6f8742b72736585c031d5a921.zip | |
lockdep: add lock_class information to lock_chain and output it
This patch records array of lock_class into lock_chain, and export
lock_chain information via /proc/lockdep_chains.
It is based on x86/master branch of git-x86 tree, and has been tested
on x86_64 platform.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/lockdep_internals.h')
| -rw-r--r-- | kernel/lockdep_internals.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h index 8ce09bc4613d..db09b176dd34 100644 --- a/kernel/lockdep_internals.h +++ b/kernel/lockdep_internals.h @@ -23,6 +23,8 @@ #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. @@ -30,15 +32,19 @@ #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 atomic_t nr_chain_hlocks; extern unsigned long nr_stack_trace_entries; extern unsigned int nr_hardirq_chains; |