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perf trace augmented_syscalls: Augment sendto's 'addr' arg

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Its a 'struct sockaddr' pointer, augment it with the same beautifier as
for 'connect' and 'bind', that all receive from userspace that pointer.

Doing it in the other direction remains to be done, hooking at the
syscalls:sys_exit_{accept4?,recvmsg} tracepoints somehow.

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-k2eu68lsphnm2fthc32gq76c@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2018-08-29 08:47:08 -03:00
parent 02ef288420
commit 6ebb686225
2 changed files with 15 additions and 1 deletions
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3
tools/perf/builtin-trace.c
View File

@ -795,7 +795,8 @@ static struct syscall_fmt {
{ .name = "sendmsg",
.arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
{ .name = "sendto",
.arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
.arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ },
[4] = { .scnprintf = SCA_SOCKADDR, /* addr */ }, }, },
{ .name = "set_tid_address", .errpid = true, },
{ .name = "setitimer",
.arg = { [0] = STRARRAY(which, itimers), }, },

13
tools/perf/examples/bpf/augmented_syscalls.c
View File

@ -142,4 +142,17 @@ struct syscall_enter_connect_args {
augmented_sockaddr_syscall_enter(connect);
struct syscall_enter_sendto_args {
unsigned long long common_tp_fields;
long syscall_nr;
long fd;
void *buff;
long len;
unsigned long flags;
struct sockaddr *addr_ptr;
long addr_len;
};
augmented_sockaddr_syscall_enter(sendto);
license(GPL);