• Arnd Bergmann's avatar
    gcov: disable for COMPILE_TEST · cc622420
    Arnd Bergmann authored
    Enabling gcov is counterproductive to compile testing: it significantly
    increases the kernel image size, compile time, and it produces lots
    of false positive "may be used uninitialized" warnings as the result
    of missed optimizations.
    
    This is in line with how UBSAN_SANITIZE_ALL and PROFILE_ALL_BRANCHES
    work, both of which have similar problems.
    
    With an ARM allmodconfig kernel, I see the build time drop from
    283 minutes CPU time to 225 minutes, and the vmlinux size drops
    from 43MB to 26MB.
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Acked-by: default avatarPeter Oberparleiter <oberpar@linux.vnet.ibm.com>
    Signed-off-by: default avatarMichal Marek <mmarek@suse.com>
    cc622420
Kconfig 2.08 KB