On Mon, Dec 14, 2015 at 10:39:19AM +0000, Wang Nan wrote: SNIP
> # cat /sys/kernel/debug/tracing/trace | grep usleep > usleep-405 [004] d... 2745423.547822: : 101 > usleep-655 [006] d... 2745434.122814: : 102 > usleep-904 [006] d... 2745439.916264: : 103 > # ./perf record -e './test_bpf_map_3.c/maps:channel.value[all]=104/' usleep > 99 > # cat /sys/kernel/debug/tracing/trace | grep usleep > usleep-405 [004] d... 2745423.547822: : 101 > usleep-655 [006] d... 2745434.122814: : 102 > usleep-904 [006] d... 2745439.916264: : 103 > usleep-1537 [003] d... 2745538.053737: : 104 > > Error case: > # ./perf record -e './test_bpf_map_3.c/maps:channel.value[10...1000]=104/' > usleep 99 > event syntax error: '..annel.value[10...1000]=104/' > \___ Index too large > Hint: Valid config terms: > maps:[<arraymap>].value<indices>=[value] > maps:[<eventmap>].event<indices>=[event] > > where <indices> is something like [0,3...5] or [all] > (add -v to see detail) > Run 'perf list' for a list of valid events > > Usage: perf record [<options>] [<command>] > or: perf record [<options>] -- <command> [<options>] > > -e, --event <event> event selector. use 'perf list' to list available > events > > Signed-off-by: Wang Nan <[email protected]> > Cc: Alexei Starovoitov <[email protected]> > Cc: Arnaldo Carvalho de Melo <[email protected]> > Cc: Jiri Olsa <[email protected]> > Cc: Masami Hiramatsu <[email protected]> > Cc: Namhyung Kim <[email protected]> > Cc: Zefan Li <[email protected]> > Cc: [email protected] > --- > tools/perf/util/parse-events.c | 5 ++- > tools/perf/util/parse-events.l | 13 ++++++- > tools/perf/util/parse-events.y | 85 > ++++++++++++++++++++++++++++++++++++++++++ Acked-by: Jiri Olsa <[email protected]> thanks, jirka -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
