linux-kernel - Re: [PATCH 7/7] preempt: Take away preempt_enable_no

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Date:	Wed, 20 Nov 2013 11:29:35 -0800
From:	Jacob Pan <jacob.jun.pan@...ux.intel.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>, lenb@...nel.org,
	rjw@...ysocki.net, Eliezer Tamir <eliezer.tamir@...ux.intel.com>,
	Chris Leech <christopher.leech@...el.com>,
	David Miller <davem@...emloft.net>, rui.zhang@...el.com,
	Mike Galbraith <bitbucket@...ine.de>,
	Ingo Molnar <mingo@...nel.org>, hpa@...or.com,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 7/7] preempt: Take away preempt_enable_no_resched() from
 modules

On Wed, 20 Nov 2013 20:18:41 +0100
Peter Zijlstra <peterz@...radead.org> wrote:

> I think the below will cure both -- will fold in the proper patches
> tomorrow, need to get away from the computer noaw.
[Jacob Pan] looks good to me. one more thing for tomorrow :)


diff --git a/kernel/softirq.c b/kernel/softirq.c
index d3283d3..750e853 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -114,6 +114,7 @@ void __local_bh_disable_ip(unsigned long ip,
unsigned int cnt) if (preempt_count() == cnt)
                trace_preempt_off(CALLER_ADDR0,
get_parent_ip(CALLER_ADDR1)); }
+EXPORT_SYMBOL_GPL(__local_bh_disable_ip);
 #endif /* CONFIG_TRACE_IRQFLAGS */
 
 static void __local_bh_enable(unsigned int cnt)
@@ -169,7 +170,7 @@ void __local_bh_enable_ip(unsigned long ip,
unsigned int cnt) #endif
        preempt_check_resched();
 }
-
+EXPORT_SYMBOL_GPL(__local_bh_enable_ip);
 /*
  * We restart softirq processing for at most MAX_SOFTIRQ_RESTART times,
  * but break the loop if need_resched() is set or after 2 ms.
--
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