linux-kernel - [PATCH] Kprobes blacklist: Conditionally add x86-specific symbols

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Date:	Thu, 7 Mar 2013 11:44:30 +0100
From:	<oskar.andero@...ymobile.com>
To:	<linux-kernel@...r.kernel.org>
CC:	<masami.hiramatsu.pt@...achi.com>, <davem@...emloft.net>,
	<anil.s.keshavamurthy@...el.com>, <ananth@...ibm.com>,
	<radovan.lekanovic@...ymobile.com>,
	Björn Davidsson <bjorn.davidsson@...ymobile.com>,
	Oskar Andero <oskar.andero@...ymobile.com>
Subject: [PATCH] Kprobes blacklist: Conditionally add x86-specific symbols

From: Björn Davidsson <bjorn.davidsson@...ymobile.com>

The kprobes blacklist contains x86-specific symbols.
Looking for these in kallsyms takes unnecessary time
during startup on non-X86 platform.
Added #ifdef CONFIG_X86 around them.

Reviewed-by: Radovan Lekanovic <radovan.lekanovic@...ymobile.com>
Signed-off-by: BjÃ¶rn Davidsson <bjorn.davidsson@...ymobile.com>
Signed-off-by: Oskar Andero <oskar.andero@...ymobile.com>
---
 kernel/kprobes.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index e35be53..8c3796f 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -95,9 +95,11 @@ static raw_spinlock_t *kretprobe_table_lock_ptr(unsigned long hash)
  */
 static struct kprobe_blackpoint kprobe_blacklist[] = {
 	{"preempt_schedule",},
+#ifdef CONFIG_X86
 	{"native_get_debugreg",},
 	{"irq_entries_start",},
 	{"common_interrupt",},
+#endif
 	{"mcount",},	/* mcount can be called from everywhere */
 	{NULL}    /* Terminator */
 };
-- 
1.7.8.6

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