From 2a9fbb27320c7cdf0a58003c7e8d752def737ecd Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Tue, 7 Aug 2012 15:09:17 +0200 Subject: eliminate lock profile pointer from spinlock structure when !LOCK_PROFILE This pointer is never used for anything, and needlessly increases the memory footprint of various pieces of data. Signed-off-by: Jan Beulich Acked-by: Keir Fraser --- xen/include/xen/spinlock.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/xen/include/xen/spinlock.h b/xen/include/xen/spinlock.h index 8133fe0934..76581c5cc2 100644 --- a/xen/include/xen/spinlock.h +++ b/xen/include/xen/spinlock.h @@ -115,11 +115,10 @@ extern void spinlock_profile_reset(unsigned char key); #else -struct lock_profile { }; struct lock_profile_qhead { }; #define SPIN_LOCK_UNLOCKED \ - { _RAW_SPIN_LOCK_UNLOCKED, 0xfffu, 0, _LOCK_DEBUG, NULL } + { _RAW_SPIN_LOCK_UNLOCKED, 0xfffu, 0, _LOCK_DEBUG } #define DEFINE_SPINLOCK(l) spinlock_t l = SPIN_LOCK_UNLOCKED #define spin_lock_init_prof(s, l) spin_lock_init(&((s)->l)) @@ -133,7 +132,9 @@ typedef struct spinlock { u16 recurse_cpu:12; u16 recurse_cnt:4; struct lock_debug debug; +#ifdef LOCK_PROFILE struct lock_profile *profile; +#endif } spinlock_t; -- cgit v1.2.3