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SubjectRe: [PATCH V2 2/3] perf script: Add an option to print the source line number
On 12/6/13, 12:42 AM, Adrian Hunter wrote:
> Add field 'srcline' that displays the source file name
> and line number associated with the sample ip. The
> information displayed is the same as from addr2line.

example output?

>
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
> tools/perf/Documentation/perf-script.txt | 2 +-
> tools/perf/builtin-script.c | 10 ++++++++++
> tools/perf/util/map.c | 17 +++++++++++++++++
> tools/perf/util/map.h | 2 ++
> tools/perf/util/session.c | 8 ++++++++
> tools/perf/util/session.h | 1 +
> 6 files changed, 39 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
> index cfdbb1e..c2a5071 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, symoff.
> + comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff, srcline.
> 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 4484886..7a571fb 100644
> --- a/tools/perf/builtin-script.c
> +++ b/tools/perf/builtin-script.c
> @@ -43,6 +43,7 @@ enum perf_output_field {
> PERF_OUTPUT_DSO = 1U << 9,
> PERF_OUTPUT_ADDR = 1U << 10,
> PERF_OUTPUT_SYMOFFSET = 1U << 11,
> + PERF_OUTPUT_SRCLINE = 1U << 12,
> };
>
> struct output_option {
> @@ -61,6 +62,7 @@ struct output_option {
> {.str = "dso", .field = PERF_OUTPUT_DSO},
> {.str = "addr", .field = PERF_OUTPUT_ADDR},
> {.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
> + {.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
> };
>
> /* default set to maintain compatibility with current format */
> @@ -210,6 +212,11 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
> "to DSO.\n");
> return -EINVAL;
> }
> + if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
> + pr_err("Display of source line number requested but sample IP is not\n"
> + "selected. Hence, no address to lookup the source line number.\n");
> + return -EINVAL;
> + }
>
> if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
> perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
> @@ -245,6 +252,9 @@ static void set_print_ip_opts(struct perf_event_attr *attr)
>
> if (PRINT_FIELD(SYMOFFSET))
> output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
> +
> + if (PRINT_FIELD(SRCLINE))
> + output[type].print_ip_opts |= PRINT_IP_OPT_SRCLINE;
> }
>
> /*
> diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
> index ef5bc91..9b9bd71 100644
> --- a/tools/perf/util/map.c
> +++ b/tools/perf/util/map.c
> @@ -11,6 +11,7 @@
> #include "strlist.h"
> #include "vdso.h"
> #include "build-id.h"
> +#include "util.h"
> #include <linux/string.h>
>
> const char *map_type__name[MAP__NR_TYPES] = {
> @@ -252,6 +253,22 @@ size_t map__fprintf_dsoname(struct map *map, FILE *fp)
> return fprintf(fp, "%s", dsoname);
> }
>
> +int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix,
> + FILE *fp)
> +{
> + char *srcline;
> + int ret = 0;
> +
> + if (map && map->dso) {
> + srcline = get_srcline(map->dso,
> + map__rip_2objdump(map, addr));
> + if (srcline != SRCLINE_UNKNOWN)
> + ret = fprintf(fp, "%s%s", prefix, srcline);
> + free_srcline(srcline);
> + }
> + return ret;
> +}
> +
> /**
> * map__rip_2objdump - convert symbol start address to objdump address.
> * @map: memory map
> diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
> index e4e259c..18068c6 100644
> --- a/tools/perf/util/map.h
> +++ b/tools/perf/util/map.h
> @@ -103,6 +103,8 @@ struct map *map__clone(struct map *map);
> int map__overlap(struct map *l, struct map *r);
> size_t map__fprintf(struct map *map, FILE *fp);
> size_t map__fprintf_dsoname(struct map *map, FILE *fp);
> +int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix,
> + FILE *fp);
>
> int map__load(struct map *map, symbol_filter_t filter);
> struct symbol *map__find_symbol(struct map *map,
> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
> index c236b38..e748f29 100644
> --- a/tools/perf/util/session.c
> +++ b/tools/perf/util/session.c
> @@ -1497,6 +1497,7 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
> int print_dso = print_opts & PRINT_IP_OPT_DSO;
> int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
> int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
> + int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE;
> char s = print_oneline ? ' ' : '\t';
>
> if (symbol_conf.use_callchain && sample->callchain) {
> @@ -1546,6 +1547,10 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
> printf(")");
> }
>
> + if (print_srcline)
> + map__fprintf_srcline(node->map, addr, "\n ",
> + stdout);
> +
> if (!print_oneline)
> printf("\n");
>
> @@ -1575,6 +1580,9 @@ next:
> map__fprintf_dsoname(al->map, stdout);
> printf(")");
> }
> +
> + if (print_srcline)
> + map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
> }
> }

Why newline followed by space?

Otherwise, Acked-by: David Ahern <dsahern@gmail.com>



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