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-rw-r--r--tools/perf/builtin-trace.c47
1 files changed, 46 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index c29692a..1a6cb74 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -14,6 +14,7 @@
#include <libaudit.h>
#include <stdlib.h>
#include <sys/mman.h>
+#include <linux/futex.h>
static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
unsigned long arg, u8 *arg_mask __maybe_unused)
@@ -137,6 +138,49 @@ static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
#define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior
+static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned long arg, u8 *arg_mask)
+{
+ enum syscall_futex_args {
+ SCF_UADDR = (1 << 0),
+ SCF_OP = (1 << 1),
+ SCF_VAL = (1 << 2),
+ SCF_TIMEOUT = (1 << 3),
+ SCF_UADDR2 = (1 << 4),
+ SCF_VAL3 = (1 << 5),
+ };
+ int op = arg;
+ int cmd = op & FUTEX_CMD_MASK;
+ size_t printed = 0;
+
+ switch (cmd) {
+#define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n);
+ P_FUTEX_OP(WAIT); *arg_mask |= SCF_VAL3|SCF_UADDR2; break;
+ P_FUTEX_OP(WAKE); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(FD); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(REQUEUE); *arg_mask |= SCF_VAL3|SCF_TIMEOUT; break;
+ P_FUTEX_OP(CMP_REQUEUE); *arg_mask |= SCF_TIMEOUT; break;
+ P_FUTEX_OP(CMP_REQUEUE_PI); *arg_mask |= SCF_TIMEOUT; break;
+ P_FUTEX_OP(WAKE_OP); break;
+ P_FUTEX_OP(LOCK_PI); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(UNLOCK_PI); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(TRYLOCK_PI); *arg_mask |= SCF_VAL3|SCF_UADDR2; break;
+ P_FUTEX_OP(WAIT_BITSET); *arg_mask |= SCF_UADDR2; break;
+ P_FUTEX_OP(WAKE_BITSET); *arg_mask |= SCF_UADDR2; break;
+ P_FUTEX_OP(WAIT_REQUEUE_PI); break;
+ default: printed = scnprintf(bf, size, "%#x", cmd); break;
+ }
+
+ if (op & FUTEX_PRIVATE_FLAG)
+ printed += scnprintf(bf + printed, size - printed, "|PRIV");
+
+ if (op & FUTEX_CLOCK_REALTIME)
+ printed += scnprintf(bf + printed, size - printed, "|CLKRT");
+
+ return printed;
+}
+
+#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
+
static struct syscall_fmt {
const char *name;
const char *alias;
@@ -153,7 +197,8 @@ static struct syscall_fmt {
{ .name = "connect", .errmsg = true, },
{ .name = "fstat", .errmsg = true, .alias = "newfstat", },
{ .name = "fstatat", .errmsg = true, .alias = "newfstatat", },
- { .name = "futex", .errmsg = true, },
+ { .name = "futex", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, },
{ .name = "ioctl", .errmsg = true,
.arg_scnprintf = { [2] = SCA_HEX, /* arg */ }, },
{ .name = "lstat", .errmsg = true, .alias = "newlstat", },
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