tree b4ca9693236b3548caf056d81e00300cdcf0d0a0
parent 815eb71e7149ecce40db9dd0ad09c4dd9d33c60f
author Arnd Bergmann <arnd@arndb.de> 1461598529 +0200
committer Michal Marek <mmarek@suse.com> 1462893169 +0200

gcov: disable for COMPILE_TEST

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: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Michal Marek <mmarek@suse.com>