Commit 02ef2884 authored Aug 28, 2018 by Arnaldo Carvalho de Melo

perf trace augmented_syscalls: Augment bind's 'myaddr' sockaddr arg

One more, to reuse the augmented_sockaddr_syscall_enter() macro
introduced from the augmentation of connect's sockaddr arg, also to get
a subset of the struct arg augmentations done using the manual method,
before switching to something automatic, using tracefs's format file or,
even better, BTF containing the syscall args structs.

  # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c
     0.000 sshd/11479 bind(fd: 3<socket:[170336]>, umyaddr: { .family: NETLINK }, addrlen: 12)
     1.752 sshd/11479 bind(fd: 3<socket:[170336]>, umyaddr: { .family: INET, port: 22, addr: 0.0.0.0 }, addrlen: 16)
     1.924 sshd/11479 bind(fd: 4<socket:[170338]>, umyaddr: { .family: INET6, port: 22, addr: :: }, addrlen: 28)
  ^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-a2drqpahpmc7uwb3n3gj2plu@git.kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 24a6c2cd

tools/perf/builtin-trace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -621,6 +621,8 @@ static struct syscall_fmt {
		} syscall_fmts[] = {
		{ .name = "access",
		.arg = { [1] = { .scnprintf = SCA_ACCMODE, /* mode */ }, }, },
		{ .name = "bind",
		.arg = { [1] = { .scnprintf = SCA_SOCKADDR, /* umyaddr */ }, }, },
		{ .name = "bpf",
		.arg = { [0] = STRARRAY(cmd, bpf_cmd), }, },
		{ .name = "brk", .hexret = true,

tools/perf/examples/bpf/augmented_syscalls.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -122,6 +122,16 @@ int syscall_enter(syscall)(struct syscall_enter_##syscall##_args *args) \

		struct sockaddr;

		struct syscall_enter_bind_args {
		unsigned long long common_tp_fields;
		long syscall_nr;
		long fd;
		struct sockaddr *addr_ptr;
		unsigned long addrlen;
		};

		augmented_sockaddr_syscall_enter(bind);

		struct syscall_enter_connect_args {
		unsigned long long common_tp_fields;
		long syscall_nr;

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