• Martin Schwidefsky's avatar
    s390: system call path micro optimization · 61649881
    Martin Schwidefsky authored
    Add a pointer to the system call table to the thread_info structure.
    The TIF_31BIT bit is set or cleared by SET_PERSONALITY exactly once
    for the lifetime of a process. With the pointer to the correct system
    call table in thread_info the system call code in entry64.S path can
    drop the check for TIF_31BIT which saves a couple of instructions.
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    61649881
entry.S 25.1 KB