averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-09-22 09:34:56 +02:00
Code Issues Packages Projects Releases Wiki Activity

sched_ext: Make SCHED_CLASS_EXT select GENERIC_ALLOCATOR

Browse Source 
kernel/sched/ext/arena.c uses the gen_pool allocator, which is built only
when GENERIC_ALLOCATOR is set. SCHED_CLASS_EXT doesn't select it, so on
configs where nothing else does, the build fails to link:

  build_policy.o: undefined reference to `gen_pool_create'
  build_policy.o: undefined reference to `gen_pool_for_each_chunk'
  build_policy.o: undefined reference to `gen_pool_destroy'

Fixes: 9eca087deb ("sched_ext: Sub-allocator over kernel-claimed BPF arena pages")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202608151315.tvN3X0Oq-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202608151632.3p91bTQj-lkp@intel.com/
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo
2026-08-14 23:50:47 -10:00
parent 9b4243d304
commit 524ab50763
1 changed files with 1 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/Kconfig.preempt
+1
View File
@@ -169,6 +169,7 @@ config SCHED_CORE
config SCHED_CLASS_EXT
bool "Extensible Scheduling Class"
depends on BPF_SYSCALL && BPF_JIT && DEBUG_INFO_BTF
select GENERIC_ALLOCATOR
select STACKTRACE if STACKTRACE_SUPPORT
help
This option enables a new scheduler class sched_ext (SCX), which