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From: Dave Martin <Dave.Martin@arm.com>
To: linux-kernel@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>,
	James Hogan <jhogan@kernel.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	"David S. Miller" <davem@davemloft.net>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Oleg Nesterov <oleg@redhat.com>,
	linux-arch@vger.kernel.org
Subject: [PATCH REPOST 0/5] Simplify setting thread flags to a particular value
Date: Fri, 11 May 2018 16:04:59 +0100	[thread overview]
Message-ID: <1526051104-15995-1-git-send-email-Dave.Martin@arm.com> (raw)

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

             reply	other threads:[~2018-05-11 15:05 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-11 15:04 Dave Martin [this message]
2018-05-11 15:05 ` [PATCH REPOST 1/5] thread_info: Port core code to use update_thread_flag() helpers Dave Martin
2018-05-11 15:33   ` Steven Rostedt
2018-05-13 16:12   ` Oleg Nesterov
2018-05-11 15:05 ` [PATCH REPOST 2/5] ARM: Use update_thread_flag() Dave Martin
2018-05-11 15:05 ` [PATCH REPOST 3/5] MIPS: Use update{,_tsk}_thread_flag() Dave Martin
2018-05-11 15:05 ` [PATCH REPOST 4/5] powerpc: Use update_thread_flag() Dave Martin
2018-05-15  3:13   ` Michael Ellerman
2018-05-11 15:05 ` [PATCH REPOST 5/5] sparc: " Dave Martin
2018-05-11 15:10   ` David Miller

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