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perf trace: Add cmd string table to decode sys_bpf first arg

tip:perf/core tip-bot for Arnaldo Carvalho de Melo 1 participant 1 message Oct 30, 2015 perf events

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Commit-ID:  729a78417a7b5c1f59e15d21a1900758375c4647
Gitweb:     http://git.kernel.org/tip/729a78417a7b5c1f59e15d21a1900758375c4647
Author:     Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Thu, 29 Oct 2015 11:48:18 -0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Thu, 29 Oct 2015 11:48:18 -0300

perf trace: Add cmd string table to decode sys_bpf first arg

 # perf trace -e bpf perf record -e /tmp/foo.o -a
   362.779 (0.130 ms): perf/3451 bpf(cmd: PROG_LOAD, uattr: 0x7ffe9a6825d0, size: 48) = 3
Cc Adrian Hunter <[email protected]>
Cc Alexei Starovoitov <[email protected]>
Cc David Ahern <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Namhyung Kim <[email protected]>
Cc Wang Nan <[email protected]>
Link http://lkml.kernel.org/n/[email protected] open here
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/builtin-trace.c | 7 +++++++
 1 file changed, 7 insertions(+)
tools/perf/builtin-trace.c +7 -0
index 93b80f1..c783d8f 100644
@@ -585,6 +585,12 @@ static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct sysc
 
 #define SCA_FUTEX_OP  syscall_arg__scnprintf_futex_op
 
+static const char *bpf_cmd[] = {
+	"MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
+	"MAP_GET_NEXT_KEY", "PROG_LOAD",
+};
+static DEFINE_STRARRAY(bpf_cmd);
+
 static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
 static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
 

@@ -1011,6 +1017,7 @@ static struct syscall_fmt {
 	  .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */
 			     [1] = SCA_ACCMODE,  /* mode */ }, },
 	{ .name	    = "arch_prctl", .errmsg = true, .alias = "prctl", },
+	{ .name	    = "bpf",	    .errmsg = true, STRARRAY(0, cmd, bpf_cmd), },
 	{ .name	    = "brk",	    .hexret = true,
 	  .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, },
 	{ .name	    = "chdir",	    .errmsg = true,