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Commit ca3b1620 authored by Namhyung Kim's avatar Namhyung Kim Committed by Steven Rostedt
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tracing/uprobes: Support event triggering 

Add support for event triggering to uprobes.  This is same as kprobes
support added by Tom (plus cleanup by Steven).

Link: http://lkml.kernel.org/r/1389946120-19610-5-git-send-email-namhyung@kernel.org



Reviewed-by: default avatarMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 70ed91c6

kernel/trace/trace_uprobe.c

+4 −2
Original line number Diff line number Diff line
@@ -776,6 +776,9 @@ static void __uprobe_trace_func(struct trace_uprobe *tu, 
	if (WARN_ON_ONCE(tu->tp.size + dsize > PAGE_SIZE))

		return;



	if (ftrace_trigger_soft_disabled(ftrace_file))

		return;



	esize = SIZEOF_TRACE_ENTRY(is_ret_probe(tu));

	size = esize + tu->tp.size + dsize;

	event = trace_event_buffer_lock_reserve(&buffer, ftrace_file,
@@ -795,8 +798,7 @@ static void __uprobe_trace_func(struct trace_uprobe *tu, 


	memcpy(data, ucb->buf, tu->tp.size + dsize);



	if (!call_filter_check_discard(call, entry, buffer, event))

		trace_buffer_unlock_commit(buffer, event, 0, 0);

	event_trigger_unlock_commit(ftrace_file, buffer, event, entry, 0, 0);

}



/* uprobe handler */