xref: /openbmc/linux/tools/perf/trace/beauty/futex_op.c (revision 4f205687)
1 #include <linux/futex.h>
2 
3 static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg)
4 {
5 	enum syscall_futex_args {
6 		SCF_UADDR   = (1 << 0),
7 		SCF_OP	    = (1 << 1),
8 		SCF_VAL	    = (1 << 2),
9 		SCF_TIMEOUT = (1 << 3),
10 		SCF_UADDR2  = (1 << 4),
11 		SCF_VAL3    = (1 << 5),
12 	};
13 	int op = arg->val;
14 	int cmd = op & FUTEX_CMD_MASK;
15 	size_t printed = 0;
16 
17 	switch (cmd) {
18 #define	P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n);
19 	P_FUTEX_OP(WAIT);	    arg->mask |= SCF_VAL3|SCF_UADDR2;		  break;
20 	P_FUTEX_OP(WAKE);	    arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
21 	P_FUTEX_OP(FD);		    arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
22 	P_FUTEX_OP(REQUEUE);	    arg->mask |= SCF_VAL3|SCF_TIMEOUT;	          break;
23 	P_FUTEX_OP(CMP_REQUEUE);    arg->mask |= SCF_TIMEOUT;			  break;
24 	P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT;			  break;
25 	P_FUTEX_OP(WAKE_OP);							  break;
26 	P_FUTEX_OP(LOCK_PI);	    arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
27 	P_FUTEX_OP(UNLOCK_PI);	    arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
28 	P_FUTEX_OP(TRYLOCK_PI);	    arg->mask |= SCF_VAL3|SCF_UADDR2;		  break;
29 	P_FUTEX_OP(WAIT_BITSET);    arg->mask |= SCF_UADDR2;			  break;
30 	P_FUTEX_OP(WAKE_BITSET);    arg->mask |= SCF_UADDR2;			  break;
31 	P_FUTEX_OP(WAIT_REQUEUE_PI);						  break;
32 	default: printed = scnprintf(bf, size, "%#x", cmd);			  break;
33 	}
34 
35 	if (op & FUTEX_PRIVATE_FLAG)
36 		printed += scnprintf(bf + printed, size - printed, "|PRIV");
37 
38 	if (op & FUTEX_CLOCK_REALTIME)
39 		printed += scnprintf(bf + printed, size - printed, "|CLKRT");
40 
41 	return printed;
42 }
43 
44 #define SCA_FUTEX_OP  syscall_arg__scnprintf_futex_op
45