r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000000)='/sys/power/pm_trace', 0x0, 0x0)
preadv2(r0, &(0x7f00000000c0)=[{&(0x7f0000000040)=""/94, 0x5e}], 0x1, 0x0, 0x0, 0x0)