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authorLi Zefan <lizf@cn.fujitsu.com>2009-08-17 13:39:49 +0800
committerIngo Molnar <mingo@elte.hu>2009-08-17 09:54:40 +0200
commite9d65725bdf5954283625ca4d770bfc34f2ae56a (patch)
tree422219331fb039396ff24d9df6e1d5293cde1bd4 /kernel/lockdep_proc.c
parent212274347fc4d2a7c56bf6c953b02c809e7e0be1 (diff)
downloadop-kernel-dev-e9d65725bdf5954283625ca4d770bfc34f2ae56a.zip
op-kernel-dev-e9d65725bdf5954283625ca4d770bfc34f2ae56a.tar.gz
lockdep: Fix missing entries in /proc/lock_chains
Two entries are missing in the output of /proc/lock_chains. One is chains[1]. When lc_next() is called the 1st time, chains[0] is returned. And when it's called the 2nd time, chains[2] is returned. The other missing ons is, when lc_start() is called the 2nd time, we should start from chains[@pos-1] but not chains[@pos], because pos == 0 is the header. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4A88ED25.2040306@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/lockdep_proc.c')
-rw-r--r--kernel/lockdep_proc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index 5dbe30b..9a7996e 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -160,8 +160,8 @@ static void *lc_next(struct seq_file *m, void *v, loff_t *pos)
else {
chain = v;
- if (*pos < nr_lock_chains)
- chain = lock_chains + *pos;
+ if (*pos - 1 < nr_lock_chains)
+ chain = lock_chains + (*pos - 1);
else
chain = NULL;
}
@@ -174,8 +174,8 @@ static void *lc_start(struct seq_file *m, loff_t *pos)
if (*pos == 0)
return SEQ_START_TOKEN;
- if (*pos < nr_lock_chains)
- return lock_chains + *pos;
+ if (*pos - 1 < nr_lock_chains)
+ return lock_chains + (*pos - 1);
return NULL;
}
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