Re: Documentation/timers/hpet_example.c compile bug

From: Randy Dunlap
Date: Sat May 29 2010 - 14:42:41 EST


On 05/28/10 04:35, Heiko Carstens wrote:
> Hi Randy,
>
> since your commit e61863099f58e458f08c101da87da752a1e009f5
> "Documentation/timers/: split txt and source files" I get this compile
> error on s390 with an allyesconfig:
>
> In file included from Documentation/timers/hpet_example.c:15:
> /usr/include/linux/hpet.h:11: error: expected specifier-qualifier-list before 'u64'

Where is the u64? My (x86_64) copy of /usr/include/linux/hpet.h looks like:

1 #ifndef __HPET__
2 #define __HPET__ 1
3
4
5
6
7 struct hpet_info {
8 unsigned long hi_ireqfreq; /* Hz */
9 unsigned long hi_flags; /* information */
10 unsigned short hi_hpet;
11 unsigned short hi_timer;
12 };
13
14 #define HPET_INFO_PERIODIC 0x0010 /* periodic-capable comparator */
15
16 #define HPET_IE_ON _IO('h', 0x01) /* interrupt on */
17 #define HPET_IE_OFF _IO('h', 0x02) /* interrupt off */
18 #define HPET_INFO _IOR('h', 0x03, struct hpet_info)
19 #define HPET_EPI _IO('h', 0x04) /* enable periodic */
20 #define HPET_DPI _IO('h', 0x05) /* disable periodic */
21 #define HPET_IRQFREQ _IOW('h', 0x6, unsigned long) /* IRQFREQ usec */
22
23 #endif /* !__HPET__ */

I guess s390 hpet.h looks different? Does it just need to #include <linux/types.h> ?
Or is the problem the kernel-space u64 vs. userspace __u64?

> Please fix.

Any suggestions?

--
~Randy
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