tracing: Remove open-coding of hist trigger var_ref management

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Have create_var_ref() manage the hist trigger's var_ref list, rather
than having similar code doing it in multiple places.  This cleans up
the code and makes sure var_refs are always accounted properly.

Also, document the var_ref-related functions to make what their
purpose clearer.

Link: http://lkml.kernel.org/r/05ddae93ff514e66fc03897d6665231892939913.1545161087.git.tom.zanussi@linux.intel.com

Acked-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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Tom Zanussi 2018-12-18 14:33:23 -06:00 • committed by Steven Rostedt (VMware)

parent e4f6d24503

commit de40f033d4

1 changed files with 75 additions and 18 deletions

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kernel/trace/trace_events_hist.c

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