diff options
| author | Tejun Heo <tj@kernel.org> | 2026-08-14 23:44:52 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-08-14 23:50:47 -1000 |
| commit | 524ab50763af33d65e6e042cf7034cd8f82d437b (patch) | |
| tree | 008e315169ef9fe648175a19b7cc4972e89b50f6 /kernel | |
| parent | 9b4243d30469e7733730e786792d1560442e229e (diff) | |
sched_ext: Make SCHED_CLASS_EXT select GENERIC_ALLOCATOR
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: 9eca087deb0b ("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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/Kconfig.preempt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt index 88c594c6d7fc..f95859e4e3f0 100644 --- a/kernel/Kconfig.preempt +++ b/kernel/Kconfig.preempt @@ -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 |