[PATCH] powerpc/configs: Add debug configs for debugging

[PATCH] powerpc/configs: Add debug configs for debugging

[Gautam Menghani]

Kernel has multiple config options to run extra validation checks that
can help catch bugs. Define new configs for major subsystems to
make it easy to enable the debug config options for a given area.

Signed-off-by: Gautam Menghani <gautam@linux.ibm.com>
---
 arch/powerpc/Makefile                    | 16 ++++++++++++++++
 arch/powerpc/configs/common_debug.config | 11 +++++++++++
 arch/powerpc/configs/locks_debug.config  | 13 +++++++++++++
 arch/powerpc/configs/lockup_debug.config |  4 ++++
 arch/powerpc/configs/mm_debug.config     | 24 ++++++++++++++++++++++++
 5 files changed, 68 insertions(+)
 create mode 100644 arch/powerpc/configs/common_debug.config
 create mode 100644 arch/powerpc/configs/locks_debug.config
 create mode 100644 arch/powerpc/configs/lockup_debug.config
 create mode 100644 arch/powerpc/configs/mm_debug.config

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 9385db478c59..425f36c3f471 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -259,6 +259,22 @@ generated_configs += ppc64le_guest_defconfig
 ppc64le_guest_defconfig:
 	$(call merge_into_defconfig,ppc64_defconfig,le guest kvm_guest)

+generated_configs += ppc64le_common_debug_defconfig
+ppc64le_common_debug_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,le common_debug)
+
+generated_configs += ppc64le_locks_debug_defconfig
+ppc64le_locks_debug_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,le locks_debug)
+
+generated_configs += ppc64le_mm_debug_defconfig
+ppc64le_mm_debug_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,le mm_debug)
+
+generated_configs += ppc64le_lockup_debug_defconfig
+ppc64le_lockup_debug_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,le lockup_debug)
+
 generated_configs += ppc64_guest_defconfig
 ppc64_guest_defconfig:
 	$(call merge_into_defconfig,ppc64_defconfig,be guest kvm_guest)
diff --git a/arch/powerpc/configs/common_debug.config b/arch/powerpc/configs/common_debug.config
new file mode 100644
index 000000000000..a341c8b41468
--- /dev/null
+++ b/arch/powerpc/configs/common_debug.config
@@ -0,0 +1,11 @@
+# For use in CI testing
+CONFIG_EXPERT=y
+CONFIG_PROVE_LOCKING=y
+CONFIG_PROVE_RCU=y
+CONFIG_KASAN=y
+CONFIG_UBSAN=y
+CONFIG_DEBUG_PAGEALLOC=y
+CONFIG_DEBUG_VM=y
+CONFIG_DEBUG_OBJECTS=y
+CONFIG_DEBUG_KMEMLEAK=y
+CONFIG_DEBUG_STACKOVERFLOW=y
diff --git a/arch/powerpc/configs/locks_debug.config b/arch/powerpc/configs/locks_debug.config
new file mode 100644
index 000000000000..b2cb23de75db
--- /dev/null
+++ b/arch/powerpc/configs/locks_debug.config
@@ -0,0 +1,13 @@
+CONFIG_EXPERT=y
+CONFIG_PROVE_LOCKING=y
+CONFIG_DEBUG_LOCK_ALLOC=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_DEBUG_LOCKING_API_SELFTESTS=y
+CONFIG_DEBUG_MUTEXES=y
+CONFIG_DEBUG_SPINLOCK=y
+CONFIG_DEBUG_RT_MUTEXES=y
+CONFIG_DEBUG_RWSEMS=y
+CONFIG_PROVE_RAW_LOCK_NESTING=y
+CONFIG_RCU_EXPERT=y
+CONFIG_PROVE_RCU=y
+CONFIG_RCU_TRACE=y
diff --git a/arch/powerpc/configs/lockup_debug.config b/arch/powerpc/configs/lockup_debug.config
new file mode 100644
index 000000000000..ad0a79abf60f
--- /dev/null
+++ b/arch/powerpc/configs/lockup_debug.config
@@ -0,0 +1,4 @@
+CONFIG_EXPERT=y
+CONFIG_WQ_WATCHDOG=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_PANIC_ON_OOPS=y
diff --git a/arch/powerpc/configs/mm_debug.config b/arch/powerpc/configs/mm_debug.config
new file mode 100644
index 000000000000..0e88eb983536
--- /dev/null
+++ b/arch/powerpc/configs/mm_debug.config
@@ -0,0 +1,24 @@
+CONFIG_EXPERT=y
+CONFIG_DEBUG_PAGEALLOC=y
+CONFIG_DEBUG_SLAB=y
+CONFIG_KASAN=y
+CONFIG_KFENCE=y
+CONFIG_KMSAN=y
+CONFIG_DEBUG_KMEMLEAK=y
+CONFIG_DEBUG_VM=y
+CONFIG_DEBUG_VIRTUAL=y
+CONFIG_DEBUG_OBJECTS=y
+CONFIG_DEBUG_OBJECTS_FREE=y
+CONFIG_DEBUG_OBJECTS_TIMERS=y
+CONFIG_DEBUG_OBJECTS_WORK=y
+CONFIG_DEBUG_OBJECTS_RCU_HEAD=y
+CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_DEBUG_VM_MAPLE_TREE=y
+CONFIG_DEBUG_VM_RB=y
+CONFIG_DEBUG_VM_PGFLAGS=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEBUG_PER_CPU_MAPS=y
+CONFIG_DEBUG_KMAP_LOCAL=y
+CONFIG_DEBUG_HIGHMEM=y
+CONFIG_DEBUG_STACKOVERFLOW=y
--
2.54.0