linux-kernel - [tip:tracing/syscalls] tracing/syscalls: select kallsysms

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Date:	Mon, 16 Mar 2009 08:19:07 GMT
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	fweisbec@...il.com, akpm@...ux-foundation.org, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:tracing/syscalls] tracing/syscalls: select kallsysms

Commit-ID:  0ea1c4156bf9e2eb370cc5c6fa6eb112bd844dec
Gitweb:     http://git.kernel.org/tip/0ea1c4156bf9e2eb370cc5c6fa6eb112bd844dec
Author:     Frederic Weisbecker <fweisbec@...il.com>
AuthorDate: Sun, 15 Mar 2009 22:10:38 +0100
Commit:     Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 16 Mar 2009 09:13:17 +0100

tracing/syscalls: select kallsysms

Syscall tracing must select kallsysms.

The arch code builds a table to find the syscall metadata by syscall
number. It needs the syscalls names resolution from the symbol table
to know which name found on the syscalls metadatas match a function
pointer from the arch sys_call_table.

Reported-by: Andrew Morton <akpm@...ux-foundation.org>
Reported-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
LKML-Reference: <1237151439-6755-4-git-send-email-fweisbec@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/trace/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 95a0ad1..b0a46f8 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -182,6 +182,7 @@ config FTRACE_SYSCALLS
 	bool "Trace syscalls"
 	depends on HAVE_FTRACE_SYSCALLS
 	select TRACING
+	select KALLSYMS
 	help
 	  Basic tracer to catch the syscall entry and exit events.
 
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