From: Juergen Gross Date: Tue, 17 Sep 2019 14:08:03 +0000 (+0200) Subject: xen: add new CONFIG_DEBUG_LOCKS option X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~63^2~1578 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=cf063792b8194026f7a422fc8bea1462ee26c46d;p=xen.git xen: add new CONFIG_DEBUG_LOCKS option Instead of enabling debugging for debug builds only add a dedicated Kconfig option for that purpose which defaults to DEBUG. Signed-off-by: Juergen Gross Reviewed-by: Jan Beulich --- diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug index e10e314e25..1faaa3ba6a 100644 --- a/xen/Kconfig.debug +++ b/xen/Kconfig.debug @@ -51,6 +51,13 @@ config LOCK_PROFILE You can use serial console to print (and reset) using 'l' and 'L' respectively, or the 'xenlockprof' tool. +config DEBUG_LOCKS + bool "Lock debugging" + default DEBUG + ---help--- + Enable debugging features of lock handling. Some additional + checks will be performed when acquiring and releasing locks. + config PERF_COUNTERS bool "Performance Counters" ---help--- diff --git a/xen/common/spinlock.c b/xen/common/spinlock.c index 8b27b11b55..6ca1b38f84 100644 --- a/xen/common/spinlock.c +++ b/xen/common/spinlock.c @@ -9,7 +9,7 @@ #include #include -#ifndef NDEBUG +#ifdef CONFIG_DEBUG_LOCKS static atomic_t spin_debug __read_mostly = ATOMIC_INIT(0); @@ -99,7 +99,7 @@ void spin_debug_disable(void) atomic_dec(&spin_debug); } -#else /* defined(NDEBUG) */ +#else /* CONFIG_DEBUG_LOCKS */ #define check_lock(l) ((void)0) #define check_barrier(l) ((void)0) diff --git a/xen/include/xen/spinlock.h b/xen/include/xen/spinlock.h index df37550f02..79b582e05d 100644 --- a/xen/include/xen/spinlock.h +++ b/xen/include/xen/spinlock.h @@ -7,7 +7,7 @@ #define SPINLOCK_CPU_BITS 12 -#ifndef NDEBUG +#ifdef CONFIG_DEBUG_LOCKS union lock_debug { uint16_t val; #define LOCK_DEBUG_INITVAL 0xffff