perf trace: Mark the rlim arg in the prlimit64 and setrlimit syscalls as coming from user space

With that it uses the generic BTF based pretty printer:

root@number:~# perf trace -e prlimit64
0.000 ( 0.004 ms): :3417020/3417020 prlimit64(resource: NOFILE, old_rlim: 0x7fb8842fe3b0) = 0
0.126 ( 0.003 ms): Chroot Helper/3417022 prlimit64(resource: NOFILE, old_rlim: 0x7fb8842fdfd0) = 0
12.557 ( 0.005 ms): firefox/3417020 prlimit64(resource: STACK, old_rlim: 0x7ffe9ade1b80) = 0
26.640 ( 0.006 ms): MainThread/3417020 prlimit64(resource: STACK, old_rlim: 0x7ffe9ade1780) = 0
27.553 ( 0.002 ms): Web Content/3417020 prlimit64(resource: AS, old_rlim: 0x7ffe9ade1660) = 0
29.405 ( 0.003 ms): Web Content/3417020 prlimit64(resource: NOFILE, old_rlim: 0x7ffe9ade0c80) = 0
30.471 ( 0.002 ms): Web Content/3417020 prlimit64(resource: RTTIME, old_rlim: 0x7ffe9ade1370) = 0
30.485 ( 0.001 ms): Web Content/3417020 prlimit64(resource: RTTIME, new_rlim: (struct rlimit64){.rlim_cur = (__u64)50000,.rlim_max = (__u64)200000,}) = 0
31.779 ( 0.001 ms): Web Content/3417020 prlimit64(resource: STACK, old_rlim: 0x7ffe9ade1670) = 0
^Croot@number:~#

Better than before, still needs improvements in the configurability of
the libbpf BTF dumper to get it to the strace output standard.

Cc: Adrian Hunter <[e-mail]>
Cc: Alan Maguire <[e-mail]>
Cc: Howard Chu <[e-mail]>
Cc: Ian Rogers <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Kan Liang <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Link: https://lore.kernel.org/lkml/ZuBQI-f8CGpuhIdH@x1
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-trace.c

···
 	{ .name	    = "pread", .alias = "pread64", },
 	{ .name	    = "preadv", .alias = "pread", },
 	{ .name	    = "prlimit64",
-	  .arg = { [1] = STRARRAY(resource, rlimit_resources), }, },
+	  .arg = { [1] = STRARRAY(resource, rlimit_resources),
+		   [2] = { .from_user = true /* new_rlim */, }, }, },
 	{ .name	    = "pwrite", .alias = "pwrite64", },
 	{ .name	    = "readlinkat",
 	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
···
 	{ .name	    = "setitimer",
 	  .arg = { [0] = STRARRAY(which, itimers), }, },
 	{ .name	    = "setrlimit",
-	  .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
+	  .arg = { [0] = STRARRAY(resource, rlimit_resources),
+		   [1] = { .from_user = true /* rlim */, }, }, },
 	{ .name	    = "setsockopt",
 	  .arg = { [1] = STRARRAY(level, socket_level), }, },
 	{ .name	    = "socket",