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Commit a4178876 authored by Ming Lei's avatar Ming Lei Committed by Ingo Molnar
Browse files

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: default avatarMing 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: default avatarIngo Molnar <mingo@elte.hu>
parent 96004bb2

kernel/lockdep.c

+0 −4
Original line number Diff line number Diff line
@@ -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



/*

kernel/lockdep_proc.c

+0 −8
Original line number Diff line number Diff line
@@ -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);