• Arnd Bergmann's avatar
    cpuset: Replace all instances of time_t with time64_t · d2b43658
    Arnd Bergmann authored
    The following patch replaces all instances of time_t with time64_t i.e.
    change the type used for representing time from 32-bit to 64-bit. All
    32-bit kernels to date use a signed 32-bit time_t type, which can only
    represent time until January 2038. Since embedded systems running 32-bit
    Linux are going to survive beyond that date, we have to change all
    current uses, in a backwards compatible way.
    
    The patch also changes the function get_seconds() that returns a 32-bit
    integer to ktime_get_seconds() that returns seconds as 64-bit integer.
    
    The patch changes the type of ticks from time_t to u32. We keep ticks as
    32-bits as the function uses 32-bit arithmetic which would prove less
    expensive than 64-bit arithmetic and the function is expected to be
    called atleast once every 32 seconds.
    Signed-off-by: default avatarHeena Sirwani <heenasirwani@gmail.com>
    Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    d2b43658
cpuset.c 75.3 KB