Commit 46b93b74 authored by Steven Rostedt's avatar Steven Rostedt Committed by Steven Rostedt

tracing/lockdep: Fix dependency of TRACE_IRQFLAGS

When CONFIG_IRQSOFF_TRACER is set and CONFIG_PROVE_LOCKING is not, we
get the following error:

$  make oldconfig
scripts/kconfig/conf --oldconfig arch/x86/Kconfig
warning: (IRQSOFF_TRACER && TRACING_SUPPORT && FTRACE && TRACE_IRQFLAGS_SUPPORT && !ARCH_USES_GETTIMEOFFSET) selects TRACE_IRQFLAGS which has unmet direct dependencies (DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && PROVE_LOCKING)
warning: (IRQSOFF_TRACER && TRACING_SUPPORT && FTRACE && TRACE_IRQFLAGS_SUPPORT && !ARCH_USES_GETTIMEOFFSET) selects TRACE_IRQFLAGS which has unmet direct dependencies (DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && PROVE_LOCKING)

This is because IRQSOFF_TRACER selects TRACE_IRQFLAGS but TRACE_IRQFLAGS
has PROVE_LOCKING as a dependency. This code is incorrect, and
this patch changes the TRACE_IRQFLAGS to be just a simple bool that
does not depend or select anything. Instead both IRQSOFF_TRACER and
PROVE_LOCKING select it.
Reported-by: default avatarRichard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 3449dafa
......@@ -482,6 +482,7 @@ config PROVE_LOCKING
select DEBUG_SPINLOCK
select DEBUG_MUTEXES
select DEBUG_LOCK_ALLOC
select TRACE_IRQFLAGS
default n
help
This feature enables the kernel to prove that all locking
......@@ -579,11 +580,10 @@ config DEBUG_LOCKDEP
of more runtime overhead.
config TRACE_IRQFLAGS
depends on DEBUG_KERNEL
bool
default y
depends on TRACE_IRQFLAGS_SUPPORT
depends on PROVE_LOCKING
help
Enables hooks to interrupt enabling and disabling for
either tracing or lock debugging.
config DEBUG_SPINLOCK_SLEEP
bool "Spinlock debugging: sleep-inside-spinlock checking"
......
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