[Xen-users] [Beginners question]- Compilation error while trying user program from domU

[MAYAP KAMGA Christine larissa <christine.mayapkamga@xxxxxxxxxxx>]

Hello

I'm having almost the same problem as below.
In my case, i want to use "cpufreq.h" and percpu.h libraries to get 
current processor frequency.
**This is my sample program**

#include <acpi/cpufreq/cpufreq.h>
#include <asm/percpu.h>
static unsigned int get_my_cur_freq(int cpuid)
{
    struct cpufreq_policy *policy;

    policy = per_cpu(cpufreq_cpu_policy, cpuid);
    if (!policy)
        return 0;
    else
        return policy->cur;
}

I linked the necesary librairy, but while executing my makefile, i 
having the followinf error:
XenRoot/xen/include/acpi/cpufreq/processor_perf.h:61: error: expected 
declaration specifiers or â...â before âcpufreq_statistic_dataâ
XenRoot/xen/include/acpi/cpufreq/processor_perf.h:61: warning: data 
definition has no type or storage class
XenRoot/xen/include/acpi/cpufreq/processor_perf.h:61: warning: type 
defaults to âintâ in declaration of âDECLARE_PER_CPUâ
In file included from readCurrentCpuCounters.c:6:
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:23: warning: data definition 
has no type or storage class
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:23: warning: type defaults 
to âintâ in declaration of âDECLARE_PER_CPUâ
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:23: warning: parameter names 
(without types) in function declaration
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:25: error: expected â=â, 
â,â, â;â, âasmâ or â__attribute__â before âcpufreq_verboseâ
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:62: error: expected 
declaration specifiers or â...â before âcpufreq_cpu_policyâ
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:62: warning: data definition 
has no type or storage class
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:62: warning: type defaults 
to âintâ in declaration of âDECLARE_PER_CPUâ
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:62: error: conflicting types 
for âDECLARE_PER_CPUâ
XenRoot/xen/include/acpi/cpufreq/processor_perf.h:61: note: previous 
declaration of âDECLARE_PER_CPUâ was here
XenRoot/xen/include/acpi/cpufreq/cpufreq.h: In function 
âcpufreq_register_driverâ:
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:164: error: âEINVALâ 
undeclared (first use in this function)
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:164: error: (Each undeclared 
identifier is reported only once
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:164: error: for each 
function it appears in.)
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:167: error: âEBUSYâ 
undeclared (first use in this function)
XenRoot/xen/include/acpi/cpufreq/cpufreq.h: In function 
âcpufreq_unregister_driverâ:
XenRoot/xen/include/acpi/cpufreq/cpufreq.h:177: error: âEINVALâ 
undeclared (first use in this function)
readCurrentCpuCounters.c: In function âget_cur_freq_on_cpuâ:
readCurrentCpuCounters.c:26: error: âper_cpu__cpufreq_cpu_policyâ 
undeclared (first use in this function)
readCurrentCpuCounters.c:26: warning: type defaults to âintâ in 
declaration of âtype nameâ
readCurrentCpuCounters.c:26: error: invalid type argument of âunary *â 
(have âintâ)
make: *** [readCurrentCpuCounters.o] Erreur 1


Please, what can i do to solve this issue.
PS: i'm using Xen in his 4.1.2 version.


Thanks in advance


On Wed, 2 Jan 2013 22:02:05 -0800 (PST), Lakshman Jayaraju wrote:
> Hi all,
>
> My aim is to invoke hypercalls from programs inside guest domains. So 
> in
> this regard I wrote a sample program as below that invokes a
> function(xc_domain_getinfo) declared in xenctrl.h.
>
> *Sample Program:*
> #include<stdio.h>
> #include<xenctrl.h>
>  int main()
> {
>  printf("Attempt to invoke hypercall!!!\n");
>  int handle,rc;
>  xc_dominfo_t *info;
>  handle = xc_interface_open();
>  printf(Ãcquired handle :%d\n",handle);
>  rc = xc_domain_getinfo(handle,3,1,info);
>  printf(" The returned value is :%d\n",rc);
>  return 0;
> }
>
> I linked xenctrl library from dom0, but I am getting compilation 
> error
> saying *xenctrl.h: No such file or directory*. Then as per the error 
> message
> I tried copying(by downloading source) required header files as and 
> when it
> says missing header files name on consecutive compilation. But I 
> ended up
> with path conflicts and couldn't succeed in compiling.
>
> *My doubts:*
> * Do I need to copy header files manually into guest domain? - I 
> tried
> copying header files required as per compilation error msgs but I 
> ended up
> with conflicts.
> * Any pointers to detailed guide to invoke hypercalls from guest 
> domains??
>
> Thanks,
> Lakshman
>
>
>
>
> --
> View this message in context:
>
> http://xen.1045712.n5.nabble.com/Beginners-question-Compilation-error-while-trying-user-program-from-domU-tp5713299.html
> Sent from the Xen - User mailing list archive at Nabble.com.
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users

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