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Revision 3f0116c3238a96bc18ad4b4acefe4e7be32fa861 authored by Ingo Molnar on 10 October 2013, 08:16:30 UTC, committed by Ingo Molnar on 11 October 2013, 05:39:14 UTC 
compiler/gcc4: Add quirk for 'asm goto' miscompilation bug
 
Fengguang Wu, Oleg Nesterov and Peter Zijlstra tracked down
a kernel crash to a GCC bug: GCC miscompiles certain 'asm goto'
constructs, as outlined here:

  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670

Implement a workaround suggested by Jakub Jelinek.

Reported-and-tested-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Suggested-by: Jakub Jelinek <jakub@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
1 parent 2fe80d3
Raw File
rtc-core.h 
#ifdef CONFIG_RTC_INTF_DEV

extern void __init rtc_dev_init(void);
extern void __exit rtc_dev_exit(void);
extern void rtc_dev_prepare(struct rtc_device *rtc);
extern void rtc_dev_add_device(struct rtc_device *rtc);
extern void rtc_dev_del_device(struct rtc_device *rtc);

#else

static inline void rtc_dev_init(void)
{
}

static inline void rtc_dev_exit(void)
{
}

static inline void rtc_dev_prepare(struct rtc_device *rtc)
{
}

static inline void rtc_dev_add_device(struct rtc_device *rtc)
{
}

static inline void rtc_dev_del_device(struct rtc_device *rtc)
{
}

#endif

#ifdef CONFIG_RTC_INTF_PROC

extern void rtc_proc_add_device(struct rtc_device *rtc);
extern void rtc_proc_del_device(struct rtc_device *rtc);

#else

static inline void rtc_proc_add_device(struct rtc_device *rtc)
{
}

static inline void rtc_proc_del_device(struct rtc_device *rtc)
{
}

#endif

#ifdef CONFIG_RTC_INTF_SYSFS

extern void __init rtc_sysfs_init(struct class *);
extern void rtc_sysfs_add_device(struct rtc_device *rtc);
extern void rtc_sysfs_del_device(struct rtc_device *rtc);

#else

static inline void rtc_sysfs_init(struct class *rtc)
{
}

static inline void rtc_sysfs_add_device(struct rtc_device *rtc)
{
}

static inline void rtc_sysfs_del_device(struct rtc_device *rtc)
{
}

#endif
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