GE ZHIGUO writes: > Hi, > Can you figure out the source code which causes this problem.
As I said, it's routines _spin_lock_irq and _spin_lock_irqsave. Here's the generated code (most of it appears to come from __ticket_spin_lock): ffffffff805f0c40 <_spin_lock_irqsave>: ffffffff805f0c40: 9c pushfq ffffffff805f0c41: 58 pop %rax ffffffff805f0c42: fa cli ffffffff805f0c43: ba 00 01 00 00 mov $0x100,%edx ffffffff805f0c48: f0 66 0f c1 17 lock xadd %dx,(%rdi) ffffffff805f0c4d: 38 f2 cmp %dh,%dl ffffffff805f0c4f: 74 06 je ffffffff805f0c57 <_spin_lock_irqsave+0x17> ffffffff805f0c51: f3 90 pause ffffffff805f0c53: 8a 17 mov (%rdi),%dl ffffffff805f0c55: eb f6 jmp ffffffff805f0c4d <_spin_lock_irqsave+0xd> ffffffff805f0c57: c3 retq ffffffff805f0c58: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) ffffffff805f0c5f: 00 ffffffff805f0c60 <_spin_lock_irq>: ffffffff805f0c60: fa cli ffffffff805f0c61: b8 00 01 00 00 mov $0x100,%eax ffffffff805f0c66: f0 66 0f c1 07 lock xadd %ax,(%rdi) ffffffff805f0c6b: 38 e0 cmp %ah,%al ffffffff805f0c6d: 74 06 je ffffffff805f0c75 <_spin_lock_irq+0x15> ffffffff805f0c6f: f3 90 pause ffffffff805f0c71: 8a 07 mov (%rdi),%al ffffffff805f0c73: eb f6 jmp ffffffff805f0c6b <_spin_lock_irq+0xb> ffffffff805f0c75: c3 retq ffffffff805f0c76: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) ffffffff805f0c7d: 00 00 00 Lluis -- "And it's much the same thing with knowledge, for whenever you learn something new, the whole world becomes that much richer." -- The Princess of Pure Reason, as told by Norton Juster in The Phantom Tollbooth _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
