perf ftrace: Add option -D/--delay to delay tracing
Changbin Du authored

This adds an option '-D/--delay' to allow us to start tracing some times
later after workload is launched.
Signed-off-by: default avatarChangbin Du <changbin.du@gmail.com>
Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: http://lore.kernel.org/lkml/20200808023141.14227-16-changbin.du@gmail.com

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
6555c2f6
Linux kernel
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