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    Subject[PATCH 10/77] perf trace: Augment 'newstat' (aka 'stat') filename ptr
    Date
    From: Arnaldo Carvalho de Melo <acme@redhat.com>

    This one will need some more work, that 'statbuf' pointer requires a
    beautifier in 'perf trace'.

    # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c
    0.000 weechat/3596 stat(filename: /etc/localtime, statbuf: 0x7ffd87d11f60)
    0.186 perf/29818 openat(dfd: CWD, filename: /sys/kernel/debug/tracing/events/syscalls/sys_enter_stat/format)
    0.279 perf/29818 openat(dfd: CWD, filename: /sys/kernel/debug/tracing/events/syscalls/sys_enter_newstat/for)
    0.670 perf/29818 openat(dfd: CWD, filename: /sys/kernel/debug/tracing/events/syscalls/sys_enter_openat/form)
    60.805 DNS Res~er #20/21308 stat(filename: /etc/resolv.conf, statbuf: 0x7ffa733fe4a0)
    60.836 DNS Res~er #20/21308 open(filename: /etc/hosts, flags: CLOEXEC)
    60.931 perf/29818 openat(dfd: CWD, filename: /sys/kernel/debug/tracing/events/syscalls/sys_enter_open/format)
    607.070 DNS Res~er #21/29812 stat(filename: /etc/resolv.conf, statbuf: 0x7ffa5e1fe3f0)
    607.098 DNS Res~er #21/29812 open(filename: /etc/hosts, flags: CLOEXEC)
    999.336 weechat/3596 stat(filename: /etc/localtime, statbuf: 0x7ffd87d11f60)
    ^C#

    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: https://lkml.kernel.org/n/tip-4lhabe7m4uzo76lnqpyfmnvk@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/perf/examples/bpf/augmented_syscalls.c | 11 +++++++++++
    1 file changed, 11 insertions(+)

    diff --git a/tools/perf/examples/bpf/augmented_syscalls.c b/tools/perf/examples/bpf/augmented_syscalls.c
    index e8486e8597de..a9695c7f7aab 100644
    --- a/tools/perf/examples/bpf/augmented_syscalls.c
    +++ b/tools/perf/examples/bpf/augmented_syscalls.c
    @@ -83,4 +83,15 @@ struct syscall_enter_inotify_add_watch_args {

    augmented_filename_syscall_enter(inotify_add_watch);

    +struct statbuf;
    +
    +struct syscall_enter_newstat_args {
    + unsigned long long common_tp_fields;
    + long syscall_nr;
    + char *filename_ptr;
    + struct stat *statbuf;
    +};
    +
    +augmented_filename_syscall_enter(newstat);
    +
    license(GPL);
    --
    2.14.4
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