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Subject[PATCH] lockdep:remove recursion stattistics
Date
From: Ming Lei <tom.leiming@gmail.com>

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>
---
kernel/lockdep.c | 4 ----
kernel/lockdep_proc.c | 8 --------
2 files changed, 0 insertions(+), 12 deletions(-)

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 0843584..f74d2d7 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -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

/*
diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index 37b6ddc..d4b3dbc 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -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);
--
1.6.0.GIT


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