Thread (6 messages) 6 messages, 3 authors, 2012-03-13

Re: [PATCH-RT] preempt.h: Fix implicit declaration of 'preempt_check_resched_rt'

From: Steven Rostedt <rostedt@goodmis.org>
Date: 2012-03-13 19:24:15
Also in: lkml

Thomas,

Can you apply this patch (with the fixed "tested-by") and push out a new
3.2-rt?

This bug is causing one of my "stable tests" to fail, and I wont push
out a new stable test until it passes. But I also wont add a fix that is
not in your tree. This means that 3.0-rt is being held back until this
gets applied.

Thanks,

-- Steve


On Thu, 2012-03-08 at 21:13 +0100, John Kacur wrote:
quoted hunk ↗ jump to hunk
When building a non-preempt kernel where CONFIG_PREEMPT_COUNT is not
defined the following build break occurs.

/home/jkacur/linux-rt/block/blk-softirq.c: In function ‘trigger_softirq’:
/home/jkacur/linux-rt/block/blk-softirq.c:54: error: implicit declaration of function ‘preempt_check_resched_rt’
make[2]: *** [block/blk-softirq.o] Error 1
make[1]: *** [block/blk-softirq.o] Error 2
make: *** [sub-make] Error 2

This patch fixes the build error by adding a define to the
!CONFIG_PREEMPT_COUNT section.

Signed-off-by: Clark Williams <redacted>
Signed-off-by: John Kacur <jkacur@redhat.com>
---
 include/linux/preempt.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index fa40695..58d8982 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -107,6 +107,7 @@ do { \
 #define preempt_disable_notrace()		do { } while (0)
 #define preempt_enable_no_resched_notrace()	do { } while (0)
 #define preempt_enable_notrace()		do { } while (0)
+#define preempt_check_resched_rt()	do { } while (0)
 
 #endif /* CONFIG_PREEMPT_COUNT */
 

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