* [PATCH 2/2 v5] tracing/uprobes: Support soft-mode disabling
@ 2013-07-04 6:53 zhangwei(Jovi)
0 siblings, 0 replies; only message in thread
From: zhangwei(Jovi) @ 2013-07-04 6:53 UTC (permalink / raw)
To: Steven Rostedt, Oleg Nesterov, Masami Hiramatsu
Cc: Srikar Dronamraju, Frederic Weisbecker, Ingo Molnar, linux-kernel
Support soft-mode disabling on uprobe-based dynamic events.
Soft-disabling is just ignoring recording if the soft disabled
flag is set.
Signed-off-by: zhangwei(Jovi) <jovi.zhangwe@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
---
kernel/trace/trace_uprobe.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 2fc9931..94f180d 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -530,6 +530,9 @@ static void uprobe_trace_print(struct trace_uprobe *tu,
WARN_ON(call != ftrace_file->event_call);
+ if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT, &ftrace_file->flags))
+ return;
+
size = SIZEOF_TRACE_ENTRY(is_ret_probe(tu));
event = trace_event_buffer_lock_reserve(&buffer, ftrace_file,
call->event.type,
--
1.7.9.7
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2013-07-04 6:53 [PATCH 2/2 v5] tracing/uprobes: Support soft-mode disabling zhangwei(Jovi)
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