Commit-ID: 46b93b74fc022885ab69dfc8e2af0562dd626638 Gitweb: http://git.kernel.org/tip/46b93b74fc022885ab69dfc8e2af0562dd626638 Author: Steven Rostedt <srostedt@xxxxxxxxxx> AuthorDate: Tue, 31 Aug 2010 16:35:20 -0400 Committer: Steven Rostedt <rostedt@xxxxxxxxxxx> CommitDate: Tue, 31 Aug 2010 16:35:20 -0400 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: Richard Kennedy <richard@xxxxxxxxxxxxxxx> Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx> --- lib/Kconfig.debug | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1b4afd2..e85d549 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -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" -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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