Commit cb1293e2f594 ("ARM: 8375/1: disable some options on ARMv7-M") causes
build failure on ARMv7-M machines:
CC arch/arm/kernel/asm-offsets.s
In file included from include/linux/sem.h:5:0,
from include/linux/sched.h:35,
from arch/arm/kernel/asm-offsets.c:14:
include/linux/rcupdate.h: In function 'rcu_read_lock_sched_held':
include/linux/rcupdate.h:539:2: error: implicit declaration of function
'arch_irqs_disabled' [-Werror=implicit-function-declaration]
return preempt_count() != 0 || irqs_disabled();
^
Commit cb1293e2f594 was initially introduced to fix build errors with
randconfig,
as ARMv7-m selects TRACE_IRQFLAGS_SUPPORT but breaks build when TRACE_IRQFLAGS
is selected.
As there is no proper support yet for TRACE_IRQFLAGS, this patch partially
reverts commit cb1293e2f594, with the downside of build errors with randconfig
when TRACE_IRQFLAGS gets selected.
Cc: Arnd Bergmann <[email protected]>
Cc: Uwe Kleine-König <[email protected]>
Cc: Russell King <[email protected]>
Signed-off-by: Maxime Coquelin <[email protected]>
---
arch/arm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b47457d..e4e1694 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -171,7 +171,7 @@ config LOCKDEP_SUPPORT
config TRACE_IRQFLAGS_SUPPORT
bool
- default !CPU_V7M
+ default y
config RWSEM_XCHGADD_ALGORITHM
bool
--
1.9.1
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