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    Subject[PATCH -tip v2 4/6] perf script: print DSOs and symbols for BTS branch_from addr
    Date
    Print DSOs and symbols for branch_from address of BTS.
    BTS records branch_from address in 'addr' fields,
    and branch_to address in 'ip' field. Latest perf-script
    resolves DSOs and symbols only for 'ip' field.
    This patch resolves them for 'addr' field too.

    # perf script -f ip,addr,dso,sym
    3f03e016b0 (unknown) ([kernel.kallsyms]) ffffffff814675d2 irq_return ([kernel.kallsyms])
    3f03e016b0 _start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
    3f03e04b80 _dl_start (/lib64/ld-2.14.so) 3f03e016b3 _start (/lib64/ld-2.14.so)
    3f03e04b80 _dl_start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
    3f03e04ba6 _dl_start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
    3f03e04bad _dl_start (/lib64/ld-2.14.so) ffffffff814675d2 irq_return ([kernel.kallsyms])
    3f03e04c1d _dl_start (/lib64/ld-2.14.so) 3f03e04bfb _dl_start (/lib64/ld-2.14.so)
    [snip]

    Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
    ---

    tools/perf/builtin-script.c | 8 +++++++-
    tools/perf/util/event.c | 2 +-
    2 files changed, 8 insertions(+), 2 deletions(-)

    diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
    index 2356198..7708d89 100644
    --- a/tools/perf/builtin-script.c
    +++ b/tools/perf/builtin-script.c
    @@ -309,6 +309,12 @@ static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
    (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
    return true;

    + /* BTS Events */
    + if ((attr->type == PERF_TYPE_HARDWARE) &&
    + (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
    + (attr->sample_period == 1))
    + return true;
    +
    return false;
    }

    @@ -328,7 +334,7 @@ static void print_sample_addr(union perf_event *event,

    thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
    event->ip.pid, sample->addr, &al);
    - /* try to resolve for user space */
    + /* try to resolve addr_location for user space */
    if (!al.map)
    thread__find_addr_map(thread, session, PERF_RECORD_MISC_USER,
    MAP__FUNCTION, event->ip.pid, sample->addr, &al);
    diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
    index 49a9315..c541d02 100644
    --- a/tools/perf/util/event.c
    +++ b/tools/perf/util/event.c
    @@ -771,7 +771,7 @@ int perf_event__preprocess_sample(const union perf_event *event,

    thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
    event->ip.pid, event->ip.ip, al);
    - /* try to resolve for user space */
    + /* try to resolve addr_location for user space */
    if (!al->map)
    thread__find_addr_map(thread, session, PERF_RECORD_MISC_USER,
    MAP__FUNCTION, event->ip.pid, event->ip.ip, al);


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