Re: ftrace trace_raw_pipe format

[Steven Rostedt]

On Tue, 17 Dec 2019 17:34:03 -0500
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> static void read_raw_buffer(int i, const char *buffer)
> {
> 	struct trace_seq s;
> 	char buf[page_size];
> 	int fd;
> 	int r;
> 
> 	printf("Parsing CPU %d buffer\n", i);
> 
> 	fd = open(buffer, O_RDONLY);

Changing the above to:

	fd = open(buffer, O_RDONLY|O_NONBLOCK);

Will then not make it block on empty buffers.

-- Steve

> 	if (fd < 0)
> 		pdie("Failed to open %s", buffer);