* Re: [dynticks:3.7-nohz1 5/25] arch/x86/kernel/apm_32.c:910:38: sparse: incorrect type in argument 3 (different modifiers)
[not found] ` <CAFTL4hxPW829tM=dB6T5USpkRyuHAvE3KiEj2csCR=RZ3Ab90w@mail.gmail.com>
@ 2012-12-23 2:58 ` Fengguang Wu
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From: Fengguang Wu @ 2012-12-23 2:58 UTC (permalink / raw)
To: Frederic Weisbecker; +Cc: Christopher Li, LKML
On Sat, Dec 22, 2012 at 07:11:49PM +0100, Frederic Weisbecker wrote:
> 2012/12/21 kbuild test robot <fengguang.wu@intel.com>:
> > tree: git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git 3.7-nohz1
> > head: 46209cdbb7d5346c29b2243c54b298a233684a5a
> > commit: 40d488f9fcd6840722402976f7a168e05819f526 [5/25] cputime: Use accessors to read task cputime stats
> >
> >
> > sparse warnings:
> >
> > + arch/x86/kernel/apm_32.c:910:38: sparse: incorrect type in argument 3 (different modifiers)
> > arch/x86/kernel/apm_32.c:910:38: expected unsigned long [nocast] [usertype] *stime
> > arch/x86/kernel/apm_32.c:910:38: got unsigned long *<noident>
>
> Ok I must say I don't really understand this report. Do you have any
> hint on what it means?
It's possibly due to this "__nocast" modifier in the type definition:
typedef unsigned long __nocast cputime_t;
Not sure how to fix it though.
> 40d488f9 arch/x86/kernel/apm_32.c Frederic Weisbecker 2012-11-13 902 cputime_t stime;
> ^1da177e arch/i386/kernel/apm.c Linus Torvalds 2005-04-16 903
> ^1da177e arch/i386/kernel/apm.c Linus Torvalds 2005-04-16 904 int apm_idle_done = 0;
> ^1da177e arch/i386/kernel/apm.c Linus Torvalds 2005-04-16 905 unsigned int jiffies_since_last_check = jiffies - last_jiffies;
> ^1da177e arch/i386/kernel/apm.c Linus Torvalds 2005-04-16 906 unsigned int bucket;
> ^1da177e arch/i386/kernel/apm.c Linus Torvalds 2005-04-16 907
> 99c63221 arch/x86/kernel/apm_32.c Len Brown 2011-04-01 908 WARN_ONCE(1, "deprecated apm_cpu_idle will be deleted in 2012");
> ^1da177e arch/i386/kernel/apm.c Linus Torvalds 2005-04-16 909 recalc:
> 40d488f9 arch/x86/kernel/apm_32.c Frederic Weisbecker 2012-11-13 @910 task_cputime(current, NULL, &stime);
Thanks,
Fengguang
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