Kconfig.debug DEBUG_PREEMPT dependency
PATCH 1/1 Kconfig.debug DEBUG_PREEMPT dependency
allow to set DEBUG_PREEMPT on PREEMPT_BKL, but !PREEMPT purpose is to get bonus of debug_smp_processor_id().
lib/Kconfig.debug +1 -1
@@ -145,7 +145,7 @@ config DEBUG_SLAB_LEAK config DEBUG_PREEMPT bool "Debug preemptible kernel" - depends on DEBUG_KERNEL && PREEMPT && TRACE_IRQFLAGS_SUPPORT + depends on DEBUG_KERNEL && (PREEMPT || PREEMPT_BKL) && TRACE_IRQFLAGS_SUPPORT default y help If you say Y here then the kernel will use a debug variant of the
lib/Kconfig.debug config DEBUG_SLAB_LEAK · line 148
Quoted 2 lines · maximilian attems
lib/Kconfig.debug +1
-1- depends on DEBUG_KERNEL && PREEMPT && TRACE_IRQFLAGS_SUPPORT + depends on DEBUG_KERNEL && (PREEMPT || PREEMPT_BKL) && TRACE_IRQFLAGS_SUPPORT
upps please discard needs more work:arch/i386/kernel/built-in.o: In function `show_registers':
(.text+0x2e8e): undefined reference to add_preempt_count' arch/i386/kernel/built-in.o: In function show_registers':
(.text+0x2e9c): undefined reference to sub_preempt_count' arch/i386/kernel/built-in.o: In function show_registers':
(.text+0x2ef2): undefined reference to add_preempt_count' arch/i386/kernel/built-in.o: In function show_registers':
(.text+0x2f02): undefined reference to sub_preempt_count' arch/i386/kernel/built-in.o: In function is_valid_bugaddr':
(.text+0x366c): undefined reference to add_preempt_count' arch/i386/kernel/built-in.o: In function is_valid_bugaddr':
(.text+0x367b): undefined reference to sub_preempt_count' arch/i386/kernel/built-in.o: In function romchecksum':
...
Signature · 1 line
maks
Quoted 2 lines · maximilian attems
allow to set
DEBUG_PREEMPTonPREEMPT_BKL, but !PREEMPT purpose is to get bonus ofdebug_smp_processor_id().
hm, have you tested this? In the case of !PREEMPT there will be _lots_ of places that use smp_processor_id() but where the preempt_count() wont be elevated - causing false positive warnings.
Ingo