There are a number of bits of code sprinkled around the kernel to set a thread flag if a certain condition is true, and clear it otherwise. This series ports relevant bits of code to use the new update_thread_flag() helpers implemented in [2]. Note: This is a repost of a previous RFC [1]. Part of patch 1, and all of patch 4 of that series have been split out and reviewed separately ([2], [3] respectively). I currently expect them to merge via Marc's KVM tree. The remainder of the patches from [1] are reposted here. Patch 1 ports some core code that to use the update_thread_flag() helpers. The remaining patches port relevant bits of arch code. Build-tested on the affected architectures; some context switch stress testing done on arm64, which exercises a few call sites for the new helpers. Comments welcome. Cheers ---Dave [1] [RFC PATCH 0/6] Simplify setting thread flags to a particular value https://lkml.org/lkml/2018/4/19/225 [2] [PATCH v7 01/16] thread_info: Add update_thread_flag() helpers http://lists.infradead.org/pipermail/linux-arm-kernel/2018-May/576596.html [3] [PATCH v7 02/16] arm64: Use update{,_tsk}_thread_flag() http://lists.infradead.org/pipermail/linux-arm-kernel/2018-May/576597.html Dave Martin (5): thread_info: Port core code to use update_thread_flag() helpers ARM: Use update_thread_flag() MIPS: Use update{,_tsk}_thread_flag() powerpc: Use update_thread_flag() sparc: Use update_thread_flag() arch/arm/kernel/elf.c | 9 +++------ arch/mips/kernel/elf.c | 10 ++-------- arch/mips/kernel/process.c | 15 ++++++--------- arch/mips/kernel/ptrace.c | 5 +---- arch/mips/kernel/syscall.c | 10 ++-------- arch/powerpc/include/asm/elf.h | 10 ++-------- arch/sparc/include/asm/elf_64.h | 5 +---- include/trace/syscall.h | 6 ++---- kernel/ptrace.c | 13 +++++-------- 9 files changed, 24 insertions(+), 59 deletions(-) -- 2.1.4
