From: Ingo Molnar Date: Tue, 14 Apr 2009 09:03:12 +0000 (+0200) Subject: lockdep: warn about lockdep disabling after kernel taint, fix X-Git-Tag: v2.6.30-rc2~3^2 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=27b19565fe4ca5b0e9d2ae98ce4b81ca728bf445;p=~shefty%2Frdma-dev.git lockdep: warn about lockdep disabling after kernel taint, fix Impact: build fix for Sparc and s390 Stephen Rothwell reported that the Sparc build broke: In file included from kernel/panic.c:12: include/linux/debug_locks.h: In function '__debug_locks_off': include/linux/debug_locks.h:15: error: implicit declaration of function 'xchg' due to: 9eeba61: lockdep: warn about lockdep disabling after kernel taint There is some inconsistency between architectures about where exactly xchg() is defined. The traditional place is in system.h but the more logical point for it is in atomic.h - where most architectures (especially new ones) have it defined. These architecture also still offer it via system.h. Some, such as Sparc or s390 only have it in asm/system.h and not available via asm/atomic.h at all. Use the widest set of headers in debug_locks.h and also include asm/system.h. Reported-by: Stephen Rothwell Cc: Frederic Weisbecker Cc: "David S. Miller" Cc: Linus Torvalds LKML-Reference: <20090414144317.026498df.sfr@canb.auug.org.au> Signed-off-by: Ingo Molnar --- diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h index 493dedb7a67..29b3ce3f2a1 100644 --- a/include/linux/debug_locks.h +++ b/include/linux/debug_locks.h @@ -3,6 +3,7 @@ #include #include +#include struct task_struct;