perf tools: Add PARSE_OPT_DISABLED flag
In some cases, we need to reuse exising options with some of them disabled. To do that, add PARSE_OPT_DISABLED flag and set_option_flag() function. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1413990949-13953-2-git-send-email-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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