Hi, As it turns out I missed a few incompatible-pointer-types errors. Furthermore I even missed to update one calling side on wait in the ARM KVM code base. Luckily the kbuild test robot found them all. These patches are against tip/sched/core 0905f04eb21fc1c2e690bed5d0418a061d56c225 also available as git tree: git://git.kernel.org/pub/scm/linux/kernel/git/wagi/linux.git tip-swait cheers, daniel changes since v6: - fixed a couple of incompatible-pointer-types errors - fixed a missing KVM ARM wait -> swait update changes since v5: - unconditionally add -Werror=incompatible-pointer-types - updated KVM statistics in commit message - rebased on tip/sched/core - added ack-by PeterZ changes since v4: - replaced patch #2 which tried to force to compiler to exit with an error by using compile time assertion type check macros. Instead use -Werror=incompatible-pointer-types to tell the compiler to barf loudly. - fixed wrong API usage in patch 4 as reported by Boqun. changes since v3 - rebased it on tip/sched/core (KVM bits have changed slightly) - added compile time type check assertion - added non lazy version of swake_up_locked() changes since v2 - rebased again on tip/master. The patches apply cleanly on v4.3-rc6 too. - fixed up mips - reordered patches to avoid lockdep warning when doing bissect. - remove unnecessary initialization of rsp->rda in rcu_init_one(). changes since v1 (PATCH v0) - rebased and fixed some typos found by cross building for S390, ARM and powerpc. For some unknown reason didn't catch them last time. - dropped completion patches because it is not clear yet how to handle complete_all() calls hard-irq/atomic contexts and swake_up_all. changes since v0 (RFC v0) - promoted the series to PATCH state instead of RFC - fixed a few fallouts with build all and some cross compilers such ARM, PowerPC, S390. - Added the simple waitqueue transformation for KVM from -rt including some numbers requested by Paolo. - Added a commit message to PeterZ's patch. Hope he likes it. [I got the numbering wrong in v1, so instead 'PATCH v1' you find it as 'PATCH v0' series] v6: https://lkml.org/lkml/2016/1/28/462 v5: https://lkml.org/lkml/2015/11/30/318 v4: https://lwn.net/Articles/665655/ v3: https://lwn.net/Articles/661415/ v2: https://lwn.net/Articles/660628/ v1: https://lwn.net/Articles/656942/ v0: https://lwn.net/Articles/653586/ Daniel Wagner (4): video: Use bool instead int pointer for get_opt_bool() argument MIPS: Differentiate between 32 and 64 bit ELF header kbuild: Add option to turn incompatible pointer check into error rcu: Do not call rcu_nocb_gp_cleanup() while holding rnp->lock Marcelo Tosatti (1): KVM: use simple waitqueue for vcpu->wq Paul Gortmaker (1): rcu: use simple wait queues where possible in rcutree Peter Zijlstra (Intel) (1): wait.[ch]: Introduce the simple waitqueue (swait) implementation Makefile | 3 + arch/arm/kvm/arm.c | 8 +- arch/arm/kvm/psci.c | 4 +- arch/mips/include/asm/elf.h | 68 ++++++------ arch/mips/kvm/mips.c | 8 +- arch/powerpc/include/asm/kvm_host.h | 4 +- arch/powerpc/kvm/book3s_hv.c | 23 ++--- arch/s390/include/asm/kvm_host.h | 2 +- arch/s390/kvm/interrupt.c | 4 +- arch/x86/kvm/lapic.c | 6 +- drivers/video/fbdev/intelfb/intelfbdrv.c | 2 +- include/linux/kvm_host.h | 5 +- include/linux/swait.h | 172 +++++++++++++++++++++++++++++++ kernel/rcu/tree.c | 24 +++-- kernel/rcu/tree.h | 12 ++- kernel/rcu/tree_plugin.h | 32 ++++-- kernel/sched/Makefile | 2 +- kernel/sched/swait.c | 123 ++++++++++++++++++++++ virt/kvm/async_pf.c | 4 +- virt/kvm/kvm_main.c | 17 ++- 20 files changed, 420 insertions(+), 103 deletions(-) create mode 100644 include/linux/swait.h create mode 100644 kernel/sched/swait.c -- 2.5.0
