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authorHuang, Ying <ying.huang@intel.com>2008-06-20 16:39:21 +0800
committerIngo Molnar <mingo@elte.hu>2008-06-20 12:21:33 +0200
commit443cd507ce7f78c6f8742b72736585c031d5a921 (patch)
tree256182911b08287661beca1f90455b14cd0b9151 /kernel/lockdep_internals.h
parent2429e4ee78e2fa40f82a4572dd21d4f3b4de9325 (diff)
downloadlwn-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.h6
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;