linux-kernel - [PATCH 37/40] trace syscalls: Print out unmapped syscalls at boot

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Date:	Wed, 23 Jun 2010 20:03:18 +1000
From:	"Ian Munsie" <imunsie@....ibm.com>
To:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Cc:	Jason Baron <jbaron@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...hat.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <michael@...erman.id.au>,
	Ian Munsie <imunsie@....ibm.com>,
	Masami Hiramatsu <mhiramat@...hat.com>
Subject: [PATCH 37/40] trace syscalls: Print out unmapped syscalls at boot

From: Ian Munsie <imunsie@....ibm.com>

This patch will print out implemented but unmapped system calls at boot
to help quickly identify remaining unmapped system calls.

Signed-off-by: Ian Munsie <imunsie@....ibm.com>
---
 kernel/trace/trace_syscalls.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 58ef002..c0041e3 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -102,6 +102,7 @@ static struct syscall_metadata *find_syscall_meta(unsigned long syscall)
 		if (start->name && arch_syscall_match_sym_name(str, start->name))
 			return start;
 	}
+	printk(KERN_DEBUG "ftrace syscalls: missing metadata for %s\n", str);
 	return NULL;
 }
 
-- 
1.7.1

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