Disregard. The time delta needs to be on a per-cpu basis. I'll redo.
On 08/18/2011 11:05 AM, David Ahern wrote: > Add a 'dt' field option to show time change between events dumped to user: > > swapper 0 [000] 0.003780: netif_receive_skb: dev=wlan0 > skbaddr=... > vpnc 23605 [000] 0.000347: netif_rx: dev=tun0 skbaddr=... > vpnc 23605 [000] 0.000007: netif_receive_skb: dev=tun0 skbaddr=... > thunderbird-bin 22435 [000] 0.001043: net_dev_queue: dev=tun0 skbaddr=... > thunderbird-bin 22435 [000] 0.000012: net_dev_xmit: dev=tun0 skbaddr=... > > Signed-off-by: David Ahern <[email protected]> > --- > tools/perf/Documentation/perf-script.txt | 2 +- > tools/perf/builtin-script.c | 20 +++++++++++++++++++- > 2 files changed, 20 insertions(+), 2 deletions(-) > > diff --git a/tools/perf/Documentation/perf-script.txt > b/tools/perf/Documentation/perf-script.txt > index db01786..4f996ab 100644 > --- a/tools/perf/Documentation/perf-script.txt > +++ b/tools/perf/Documentation/perf-script.txt > @@ -115,7 +115,7 @@ OPTIONS > -f:: > --fields:: > Comma separated list of fields to print. Options are: > - comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr. > + comm, tid, pid, time, dt, cpu, event, trace, ip, sym, dso, addr. > Field list can be prepended with the type, trace, sw or hw, > to indicate to which event type the field list applies. > e.g., -f sw:comm,tid,time,ip,sym and -f trace:time,cpu,trace > diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c > index 09024ec..541b30a 100644 > --- a/tools/perf/builtin-script.c > +++ b/tools/perf/builtin-script.c > @@ -37,6 +37,7 @@ enum perf_output_field { > PERF_OUTPUT_SYM = 1U << 8, > PERF_OUTPUT_DSO = 1U << 9, > PERF_OUTPUT_ADDR = 1U << 10, > + PERF_OUTPUT_DT = 1U << 11, > }; > > struct output_option { > @@ -54,6 +55,7 @@ struct output_option { > {.str = "sym", .field = PERF_OUTPUT_SYM}, > {.str = "dso", .field = PERF_OUTPUT_DSO}, > {.str = "addr", .field = PERF_OUTPUT_ADDR}, > + {.str = "dt", .field = PERF_OUTPUT_DT}, > }; > > /* default set to maintain compatibility with current format */ > @@ -207,6 +209,11 @@ static int perf_evsel__check_attr(struct perf_evsel > *evsel, > PERF_OUTPUT_TIME)) > return -EINVAL; > > + if (PRINT_FIELD(DT) && > + perf_event_attr__check_stype(attr, PERF_SAMPLE_TIME, "DT", > + PERF_OUTPUT_DT)) > + return -EINVAL; > + > if (PRINT_FIELD(CPU) && > perf_event_attr__check_stype(attr, PERF_SAMPLE_CPU, "CPU", > PERF_OUTPUT_CPU)) > @@ -288,6 +295,17 @@ static void print_sample_start(struct perf_sample > *sample, > printf("%5lu.%06lu: ", secs, usecs); > } > > + if (PRINT_FIELD(DT)) { > + static u64 prev_sample_time; > + > + nsecs = prev_sample_time ? sample->time - prev_sample_time : 0; > + prev_sample_time = sample->time; > + secs = nsecs / NSECS_PER_SEC; > + nsecs -= secs * NSECS_PER_SEC; > + usecs = nsecs / NSECS_PER_USEC; > + printf("%lu.%06lu: ", secs, usecs); > + } > + > if (PRINT_FIELD(EVNAME)) { > if (attr->type == PERF_TYPE_TRACEPOINT) { > type = trace_parse_common_type(sample->raw_data); > @@ -1080,7 +1098,7 @@ static const struct option options[] = { > OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", > "Look for files with symbols relative to this directory"), > OPT_CALLBACK('f', "fields", NULL, "str", > - "comma separated output fields prepend with 'type:'. Valid > types: hw,sw,trace,raw. Fields: > comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr", > + "comma separated output fields prepend with 'type:'. Valid > types: hw,sw,trace,raw. Fields: > comm,tid,pid,time,dt,cpu,event,trace,ip,sym,dso,addr", > parse_output_fields), > OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"), > -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
