From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Jason Baron <jbaron@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Frederic Weisbecker <fweisbec@gmail.com>
Subject: [PATCH 0/5 v2] [GIT PULL] x86/jump label: Paranoid checks and 2 or 5 byte nops
Date: Sat, 28 Jan 2012 11:09:25 -0500 [thread overview]
Message-ID: <20120128160925.275163704@goodmis.org> (raw)
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Ingo,
This is the second round with the suggestions made by Peter and Andrew
incorporated (and tested).
We can still let this code sit on LKML for a little bit, to give time
for anyone else that wants to complain about them ;-)
Changes for v2:
Used GENERIC_NOP5_ATOMIC instead of open coding the nop.
(suggested by H. Peter Anvin)
I also added a comment to the code that explains that the
JUMP_LABEL_INIT_NOP must match the update_jump_label.c code.
Used const pointers for default_nop and short_nop.
(suggested by Andrew Morton)
Please pull (again, if everyone is OK with them) the latest
tip/perf/jump-label-2 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
tip/perf/jump-label-2
Head SHA1: 78498e6a36ca3d192ee6a151d8c081525e6c9abe
Steven Rostedt (5):
x86/jump-label: Use best default nops for inital jump label calls
x86/jump-label: Do not bother updating nops if they are correct
x86/jump-label: Add safety checks to jump label conversions
jump labels: Add infrastructure to update jump labels at compile time
x86/jump labels: Use etiher 5 byte or 2 byte jumps
----
Makefile | 7 +
arch/Kconfig | 6 +
arch/x86/Kconfig | 1 +
arch/x86/include/asm/jump_label.h | 14 ++-
arch/x86/kernel/jump_label.c | 109 +++++++++++-
scripts/Makefile | 1 +
scripts/Makefile.build | 15 ++-
scripts/update_jump_label.c | 341 +++++++++++++++++++++++++++++++++++++
scripts/update_jump_label.h | 208 ++++++++++++++++++++++
9 files changed, 688 insertions(+), 14 deletions(-)
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next reply other threads:[~2012-01-28 16:16 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-28 16:09 Steven Rostedt [this message]
2012-01-28 16:09 ` [PATCH 1/5 v2] x86/jump-label: Use best default nops for inital jump label calls Steven Rostedt
2012-01-28 16:09 ` [PATCH 2/5 v2] x86/jump-label: Do not bother updating nops if they are correct Steven Rostedt
2012-01-28 16:09 ` [PATCH 3/5 v2] x86/jump-label: Add safety checks to jump label conversions Steven Rostedt
2012-01-28 16:09 ` [PATCH 4/5 v2] jump labels: Add infrastructure to update jump labels at compile time Steven Rostedt
2012-01-28 16:09 ` [PATCH 5/5 v2] x86/jump labels: Use etiher 5 byte or 2 byte jumps Steven Rostedt
2012-01-30 14:48 ` [PATCH 0/5 v2] [GIT PULL] x86/jump label: Paranoid checks and 2 or 5 byte nops Ingo Molnar
2012-01-30 15:07 ` Steven Rostedt
2012-01-31 19:48 ` Ingo Molnar
2012-02-01 5:08 ` Steven Rostedt
2012-02-01 8:05 ` Ingo Molnar
2012-02-01 13:20 ` Steven Rostedt
2012-02-01 15:21 ` Steven Rostedt
2012-02-02 13:51 ` Ingo Molnar
2012-02-02 14:10 ` H. Peter Anvin
2012-02-02 14:31 ` Steven Rostedt
2012-02-02 22:04 ` Steven Rostedt
2012-02-02 22:07 ` H. Peter Anvin
2012-02-02 22:53 ` Steven Rostedt
2012-02-03 7:36 ` Ingo Molnar
2012-02-03 13:31 ` Steven Rostedt
2012-02-05 11:47 ` Ingo Molnar
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