ftrace: Replace (void *)1 with a meaningful macro name FTRACE_GRAPH_EMPTY

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When the set_graph_function or set_graph_notrace contains no records, a
banner is displayed of either "#### all functions enabled ####" or
"#### all functions disabled ####" respectively. To tell the seq operations
to do this, (void *)1 is passed as a return value. Instead of using a
hardcoded meaningless variable, define it as a macro.

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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Steven Rostedt (VMware) 2017-02-02 10:15:22 -05:00

parent 2b2c279c81

commit 555fc7813e

1 changed files with 4 additions and 2 deletions

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kernel/trace/ftrace.c

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