Commit 0d109c8f authored Jul 07, 2009 by Li Zefan Committed by Ingo Molnar Jul 10, 2009

ksym_tracer: Report error when failed to re-register hbp



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>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: "K.Prasad" <prasad@linux.vnet.ibm.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <4A52E314.7070004@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 011ed568

kernel/trace/trace_ksym.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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) */