From: Masami Hiramatsu <mhiramat@redhat.com>
To: Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@elte.hu>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
lkml<linux-kernel@vger.kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Ingo Molnar <mingo@elte.hu>,
Jim Keniston <jkenisto@us.ibm.com>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
Christoph Hellwig <hch@infradead.org>,
Steven Rostedt <rostedt@goodmis.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Anders Kaseorg <andersk@ksplice.com>,
Tim Abbott <tabbott@ksplice.com>,
Andi Kleen <andi@firstfloor.org>,
Jason Baron <jbaron@redhat.com>,
Mathieu Desnoyers <compudj@krystal.dyndns.org>,
systemtap<systemtap@sources.redhat.com>,
DLE<dle-develop@lists.sourceforge.net>
Subject: [PATCH -tip v9 1/9] kprobes/x86: Cleanup RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP_OPCODE
Date: Fri, 05 Feb 2010 22:38:00 -0000 [thread overview]
Message-ID: <20100205224623.31959.55804.stgit@dhcp-100-2-132.bos.redhat.com> (raw)
In-Reply-To: <20100205224613.31959.59651.stgit@dhcp-100-2-132.bos.redhat.com>
Change RELATIVEJUMP_INSTRUCTION macro to RELATIVEJUMP_OPCODE since it
represents just the opcode byte.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Anders Kaseorg <andersk@ksplice.com>
Cc: Tim Abbott <tabbott@ksplice.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Mathieu Desnoyers <compudj@krystal.dyndns.org>
---
arch/x86/include/asm/kprobes.h | 2 +-
arch/x86/kernel/kprobes.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h
index 4fe681d..eaec8ea 100644
--- a/arch/x86/include/asm/kprobes.h
+++ b/arch/x86/include/asm/kprobes.h
@@ -32,7 +32,7 @@ struct kprobe;
typedef u8 kprobe_opcode_t;
#define BREAKPOINT_INSTRUCTION 0xcc
-#define RELATIVEJUMP_INSTRUCTION 0xe9
+#define RELATIVEJUMP_OPCODE 0xe9
#define MAX_INSN_SIZE 16
#define MAX_STACK_SIZE 64
#define MIN_STACK_SIZE(ADDR) \
diff --git a/arch/x86/kernel/kprobes.c b/arch/x86/kernel/kprobes.c
index 5de9f4a..15177cd 100644
--- a/arch/x86/kernel/kprobes.c
+++ b/arch/x86/kernel/kprobes.c
@@ -115,7 +115,7 @@ static void __kprobes set_jmp_op(void *from, void *to)
} __attribute__((packed)) * jop;
jop = (struct __arch_jmp_op *)from;
jop->raddr = (s32)((long)(to) - ((long)(from) + 5));
- jop->op = RELATIVEJUMP_INSTRUCTION;
+ jop->op = RELATIVEJUMP_OPCODE;
}
/*
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
next prev parent reply other threads:[~2010-02-05 22:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-05 22:38 [PATCH -tip v9 0/9] kprobes: Kprobes jump optimization support Masami Hiramatsu
2010-02-05 22:38 ` Masami Hiramatsu [this message]
2010-02-05 22:39 ` [PATCH -tip v9 6/9] kprobes/x86: Cleanup save/restore registers Masami Hiramatsu
2010-02-05 22:39 ` [PATCH -tip v9 5/9] kprobes/x86: Boost probes when reentering Masami Hiramatsu
2010-02-05 22:39 ` [PATCH -tip v9 9/9] kprobes: Add documents of jump optimization Masami Hiramatsu
2010-02-05 22:39 ` [PATCH -tip v9 8/9] kprobes/x86: Support kprobes jump optimization on x86 Masami Hiramatsu
2010-02-05 22:39 ` [PATCH -tip v9 7/9] x86: Add text_poke_smp for SMP cross modifying code Masami Hiramatsu
2010-02-05 22:39 ` [PATCH -tip v9 3/9] kprobes: Introduce kprobes jump optimization Masami Hiramatsu
2010-02-05 22:39 ` [PATCH -tip v9 2/9] kprobes: Introduce generic insn_slot framework Masami Hiramatsu
2010-02-05 22:39 ` [PATCH -tip v9 4/9] kprobes: Jump optimization sysctl interface Masami Hiramatsu
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