int vm86_eflags; /* virtual eflags for vm86 mode */ int vm86_flagmask; /* flag mask for vm86 mode */ void *vm86_userp; /* XXX performance hack */ struct cpu_info *pcb_fpcpu; /* cpu holding our fp state. */ u_long pcb_iomap[NIOPORTS/32]; /* I/O bitmap */ }; 看...
[<ffffffff817e5bf2>] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline][<ffffffff817e5bf2>] cpumask_test_cpu include/linux/cpumask.h:506 [inline][<ffffffff817e5bf2>] cpu_online include/linux/cpumask.h:1092 [inline][<ffffffff817e5bf2>] trace_lock_acquire ...