• Peter Zijlstra's avatar
    jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP} · 76b235c6
    Peter Zijlstra authored
    Since we've already stepped away from ENABLE is a JMP and DISABLE is a
    NOP with the branch_default bits, and are going to make it even worse,
    rename it to make it all clearer.
    
    This way we don't mix multiple levels of logic attributes, but have a
    plain 'physical' name for what the current instruction patching status
    of a jump label is.
    
    This is a first step in removing the naming confusion that has led to
    a stream of avoidable bugs such as:
    
      a833581e ("x86, perf: Fix static_key bug in load_mm_cr4()")
    Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: linux-kernel@vger.kernel.org
    [ Beefed up the changelog. ]
    Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
    76b235c6
jump_label.c 11 KB