linux-kernel - [tip:core/locking] lockdep: Remove recursion stattistics

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Date:	Sat, 29 Aug 2009 11:25:22 GMT
From:	tip-bot for Ming Lei <tom.leiming@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	tglx@...utronix.de, tom.leiming@...il.com, mingo@...e.hu
Subject: [tip:core/locking] lockdep: Remove recursion stattistics

Commit-ID:  a417887637e862b434b293404f2a31ad1f282a58
Gitweb:     http://git.kernel.org/tip/a417887637e862b434b293404f2a31ad1f282a58
Author:     Ming Lei <tom.leiming@...il.com>
AuthorDate: Sat, 29 Aug 2009 18:47:59 +0800
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sat, 29 Aug 2009 13:22:36 +0200

lockdep: Remove recursion stattistics

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@...il.com>
Cc: a.p.zijlstra@...llo.nl
LKML-Reference: <1251542879-5211-1-git-send-email-tom.leiming@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 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 8dac840..ec33c6a 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);
--
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