lockdep: Remove recursion stattistics
Ming Lei [Sat, 29 Aug 2009 10:47:59 +0000 (18:47 +0800)]
Since lockdep has introduced BFS to avoid recursion, statistics
for recursion does not make any sense now. So remove them.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Cc: a.p.zijlstra@chello.nl
LKML-Reference: <1251542879-5211-1-git-send-email-tom.leiming@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/lockdep.c
kernel/lockdep_proc.c

index 0843584..f74d2d7 100644 (file)
@@ -399,7 +399,6 @@ unsigned int nr_hardirq_chains;
 unsigned int nr_softirq_chains;
 unsigned int nr_process_chains;
 unsigned int max_lockdep_depth;
-unsigned int max_recursion_depth;
 
 #ifdef CONFIG_DEBUG_LOCKDEP
 /*
@@ -429,11 +428,8 @@ atomic_t redundant_softirqs_on;
 atomic_t redundant_softirqs_off;
 atomic_t nr_unused_locks;
 atomic_t nr_cyclic_checks;
-atomic_t nr_cyclic_check_recursions;
 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;
 #endif
 
 /*
index 8dac840..ec33c6a 100644 (file)
@@ -199,16 +199,10 @@ static void lockdep_stats_debug_show(struct seq_file *m)
                debug_atomic_read(&chain_lookup_hits));
        seq_printf(m, " cyclic checks:                 %11u\n",
                debug_atomic_read(&nr_cyclic_checks));
-       seq_printf(m, " cyclic-check recursions:       %11u\n",
-               debug_atomic_read(&nr_cyclic_check_recursions));
        seq_printf(m, " find-mask forwards checks:     %11u\n",
                debug_atomic_read(&nr_find_usage_forwards_checks));
-       seq_printf(m, " find-mask forwards recursions: %11u\n",
-               debug_atomic_read(&nr_find_usage_forwards_recursions));
        seq_printf(m, " find-mask backwards checks:    %11u\n",
                debug_atomic_read(&nr_find_usage_backwards_checks));
-       seq_printf(m, " find-mask backwards recursions:%11u\n",
-               debug_atomic_read(&nr_find_usage_backwards_recursions));
 
        seq_printf(m, " hardirq on events:             %11u\n", hi1);
        seq_printf(m, " hardirq off events:            %11u\n", hi2);
@@ -350,8 +344,6 @@ static int lockdep_stats_show(struct seq_file *m, void *v)
                        nr_unused);
        seq_printf(m, " max locking depth:             %11u\n",
                        max_lockdep_depth);
-       seq_printf(m, " max recursion depth:           %11u\n",
-                       max_recursion_depth);
 #ifdef CONFIG_PROVE_LOCKING
        seq_printf(m, " max bfs queue depth:           %11u\n",
                        max_bfs_queue_depth);