[PATCH 6/8] ksym_tracer: Report error when failed to re-register hbp

Li Zefan
2009-07-07T05:54:33Z

When access type is changed, the hw break point will be
unregistered and then be registered again with new access
type. But the registration may fail, in this case, -errno
should be returned.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
kernel/trace/trace_ksym.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c
index 8cbed5a..891e3b8 100644
--- a/kernel/trace/trace_ksym.c
+++ b/kernel/trace/trace_ksym.c
@@ -302,13 +302,13 @@ static ssize_t ksym_trace_filter_write(struct file *file,
ret = count;
goto unlock_ret_path;
}
- }
+ } else
+ ret = count;
ksym_filter_entry_count--;
hlist_del_rcu(&(entry->ksym_hlist));
synchronize_rcu();
kfree(entry->ksym_hbp);
kfree(entry);
- ret = count;
goto err_ret;
} else {
/* Check for malformed request: (4) */
--
1.5.4.rc3