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Subject[PATCH REPOST 0/5] Simplify setting thread flags to a particular value
Date
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

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