| Message ID | 20250402172305.1775226-1-sdf@fomichev.me (mailing list archive) |
|---|---|
| State | Under Review |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net-next] configs/debug: run and debug PREEMPT | expand |
On Wed, Apr 02, 2025 at 10:23:05AM -0700, Stanislav Fomichev wrote: > Recent change [0] resulted in a "BUG: using __this_cpu_read() in > preemptible" splat [1]. PREEMPT kernels have additional requirements > on what can and can not run with/without preemption enabled. > Expose those constrains in the debug kernels. > > 0: https://lore.kernel.org/netdev/20250314120048.12569-2-justin.iurman@uliege.be/ > 1: https://lore.kernel.org/netdev/20250402094458.006ba2a7@kernel.org/T/#mbf72641e9d7d274daee9003ef5edf6833201f1bc > > Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Simon Horman <horms@kernel.org>
diff --git a/kernel/configs/debug.config b/kernel/configs/debug.config index 8aafd050b754..e81327d2cd63 100644 --- a/kernel/configs/debug.config +++ b/kernel/configs/debug.config @@ -112,3 +112,8 @@ CONFIG_BRANCH_PROFILE_NONE=y CONFIG_DYNAMIC_FTRACE=y CONFIG_FTRACE=y CONFIG_FUNCTION_TRACER=y +# +# Preemption +# +CONFIG_DEBUG_PREEMPT=y +CONFIG_PREEMPT=y
Recent change [0] resulted in a "BUG: using __this_cpu_read() in preemptible" splat [1]. PREEMPT kernels have additional requirements on what can and can not run with/without preemption enabled. Expose those constrains in the debug kernels. 0: https://lore.kernel.org/netdev/20250314120048.12569-2-justin.iurman@uliege.be/ 1: https://lore.kernel.org/netdev/20250402094458.006ba2a7@kernel.org/T/#mbf72641e9d7d274daee9003ef5edf6833201f1bc Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> --- kernel/configs/debug.config | 5 +++++ 1 file changed, 5 insertions(+)