Roland questions

Roland answers

• What does the 'sched_feat' macro in scheduler mean?
• Calling kernel_fpu_begin twice before kernel_fpu_end
• What to prefer between spin_lock_init and DEFINE_SPINLOCK AND WHEN
• How to read extended PCIE configuration space in Linux?
• Linux Kernel timers subsystems: Precision vs. Resolution
• infiniband rdma poor transfer bw
• the definition of container_of macro
• Provide several kernel buffers through mmap
• how to catch the NIC interrupt(up/down)?
• Call a userspace function from within a Linux kernel module