Re: [PATCH 06/13] function-graph: Allow writing the same val to set_graph_function
From: Frederic Weisbecker
Date: Mon Dec 07 2009 - 09:43:23 EST
2009/12/7 Li Zefan <lizf@xxxxxxxxxxxxxx>:
> # echo 'do_open' > set_graph_function
> # echo 'do_open' >> set_graph_function
> bash: echo: write error: Invalid argument
>
> Make it valid to write the same value to set_graph_function,
> which is consistent with set_ftrace_filter interface.
>
> Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
Acked-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> ---
> kernel/trace/ftrace.c | 5 ++---
> 1 files changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
> index ff8aecd..7968762 100644
> --- a/kernel/trace/ftrace.c
> +++ b/kernel/trace/ftrace.c
> @@ -2552,10 +2552,9 @@ ftrace_set_func(unsigned long *array, int *idx, char *buffer)
> exists = true;
> break;
> }
> - if (!exists) {
> + if (!exists)
> array[(*idx)++] = rec->ip;
> - found = 1;
> - }
> + found = 1;
> }
> } while_for_each_ftrace_rec();
>
> --
> 1.6.3
>
>
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