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From: Frederic Weisbecker <fweisbec@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH][RESEND] tracing/ftrace: Make boot tracer select the sched_switch tracer
Date: Wed, 22 Oct 2008 19:26:23 +0200	[thread overview]
Message-ID: <48FF623F.3010507@gmail.com> (raw)

If the boot tracer is selected but not the sched_switch,
there will be a build failure:

kernel/built-in.o: In function `boot_trace_init':
trace_boot.c:(.text+0x5ee38): undefined reference to `sched_switch_trace'
kernel/built-in.o: In function `disable_boot_trace':
(.text+0x5eee1): undefined reference to `tracing_stop_cmdline_record'
kernel/built-in.o: In function `enable_boot_trace':
(.text+0x5ef11): undefined reference to `tracing_start_cmdline_record'

This patch fixes it.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 396aea1..d09c693 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -125,6 +125,7 @@ config BOOT_TRACER
 	depends on HAVE_FTRACE
 	depends on DEBUG_KERNEL
 	select TRACING
+	select CONTEXT_SWITCH_TRACER
 	help
 	 This tracer helps developers to optimize boot times: it records
 	 the timings of the initcalls. Its aim is to be parsed by the

             reply	other threads:[~2008-10-22 17:26 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-22 17:26 Frederic Weisbecker [this message]
2008-10-27 15:47 ` [PATCH][RESEND] tracing/ftrace: Make boot tracer select the sched_switch tracer Ingo Molnar

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