From: Jiri Olsa <jolsa@redhat.com>
To: mingo@elte.hu
Cc: masami.hiramatsu.pt@hitachi.com, acme@redhat.com,
fweisbec@gmail.com, hpa@zytor.com, ananth@in.ibm.com,
davem@davemloft.net, linux-kernel@vger.kernel.org,
tglx@linutronix.de, a.p.zijlstra@chello.nl,
eric.dumazet@gmail.com, 2nddept-manager@sdl.hitachi.co.jp
Subject: [PATCH 0/2] x86: separating entry text section + kprobes fix
Date: Mon, 21 Feb 2011 15:25:11 +0100 [thread overview]
Message-ID: <1298298313-5980-1-git-send-email-jolsa@redhat.com> (raw)
In-Reply-To: <20110220125948.GC25700@elte.hu>
hi,
while fixing the optimized kprobes issue, we found out that separating
the entry text section might have performance benefits with regards to
the instruction cache usage.
attached patches:
1/2 - x86: separating entry text section
2/2 - kprobes: disabling optimized kprobes for entry text section
wbr,
jirka
---
arch/x86/ia32/ia32entry.S | 2 ++
arch/x86/kernel/entry_32.S | 6 ++++--
arch/x86/kernel/entry_64.S | 6 ++++--
arch/x86/kernel/kprobes.c | 8 ++++++++
arch/x86/kernel/vmlinux.lds.S | 1 +
include/asm-generic/sections.h | 1 +
include/asm-generic/vmlinux.lds.h | 6 ++++++
7 files changed, 26 insertions(+), 4 deletions(-)
next prev parent reply other threads:[~2011-02-21 14:25 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-14 15:12 [RFC,PATCH] kprobes - optimized kprobes might crash before setting kernel stack Jiri Olsa
2011-02-15 9:41 ` Masami Hiramatsu
2011-02-15 12:30 ` Jiri Olsa
2011-02-15 15:55 ` Masami Hiramatsu
2011-02-15 16:54 ` Jiri Olsa
2011-02-15 17:05 ` [PATCH] kprobes - do not allow optimized kprobes in entry code Jiri Olsa
2011-02-16 3:36 ` Masami Hiramatsu
2011-02-17 15:11 ` Ingo Molnar
2011-02-17 15:20 ` Jiri Olsa
2011-02-18 16:26 ` Jiri Olsa
2011-02-19 14:14 ` Masami Hiramatsu
2011-02-20 12:59 ` Ingo Molnar
2011-02-21 11:54 ` Jiri Olsa
2011-02-21 14:25 ` Jiri Olsa [this message]
2011-02-21 14:25 ` [PATCH 1/2] x86: separating entry text section Jiri Olsa
2011-02-22 3:22 ` Masami Hiramatsu
2011-02-22 8:09 ` Ingo Molnar
2011-02-22 12:52 ` Jiri Olsa
2011-03-07 10:44 ` Jiri Olsa
2011-03-07 15:29 ` Ingo Molnar
2011-03-07 18:10 ` Jiri Olsa
2011-03-08 16:15 ` Ingo Molnar
2011-03-08 20:15 ` [tip:perf/core] x86: Separate out " tip-bot for Jiri Olsa
2011-02-21 14:25 ` [PATCH 2/2] kprobes: disabling optimized kprobes for " Jiri Olsa
2011-02-22 3:22 ` Masami Hiramatsu
2011-03-08 20:16 ` [tip:perf/core] kprobes: Disabling " tip-bot for Jiri Olsa
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