Re: [PATCH] [BUGFIX] Fix build error caused by an undefinition of the kvm_write_tsc_offset tracepoint for x86_32

[Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>]

Hi Gleb,

Thank you for applying my patch.
I received a mail of build error for i386, so I fixed the problem.
Since the tracepoint was defined only for x86_64, build was failed in
x86_32.

Would you apply this patch to kvm-tree?
Sorry for the inconvenience this may cause.

Thank you,
Yoshihiro YUNOMAE

(2013/06/25 19:16), Yoshihiro YUNOMAE wrote:
> Fix build error caused by an undefinition of the kvm_write_tsc_offset
> tracepoint for x86_32.
> Since the tracepoint in trace.h was defined for CONFIG_X86_64, kernel build
> on i386 was failed.
>
> Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
> Cc: Joerg Roedel <joro@8bytes.org>
> Cc: Gleb Natapov <gleb@redhat.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> ---
>   arch/x86/kvm/trace.h |   42 +++++++++++++++++++++---------------------
>   1 file changed, 21 insertions(+), 21 deletions(-)
>
> diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
> index 6c82cf1..545245d 100644
> --- a/arch/x86/kvm/trace.h
> +++ b/arch/x86/kvm/trace.h
> @@ -756,6 +756,27 @@ TRACE_EVENT(
>   		  __entry->gpa_match ? "GPA" : "GVA")
>   );
>
> +TRACE_EVENT(kvm_write_tsc_offset,
> +	TP_PROTO(unsigned int vcpu_id, __u64 previous_tsc_offset,
> +		 __u64 next_tsc_offset),
> +	TP_ARGS(vcpu_id, previous_tsc_offset, next_tsc_offset),
> +
> +	TP_STRUCT__entry(
> +		__field( unsigned int,	vcpu_id				)
> +		__field(	__u64,	previous_tsc_offset		)
> +		__field(	__u64,	next_tsc_offset			)
> +	),
> +
> +	TP_fast_assign(
> +		__entry->vcpu_id		= vcpu_id;
> +		__entry->previous_tsc_offset	= previous_tsc_offset;
> +		__entry->next_tsc_offset	= next_tsc_offset;
> +	),
> +
> +	TP_printk("vcpu=%u prev=%llu next=%llu", __entry->vcpu_id,
> +		  __entry->previous_tsc_offset, __entry->next_tsc_offset)
> +);
> +
>   #ifdef CONFIG_X86_64
>
>   #define host_clocks					\
> @@ -815,27 +836,6 @@ TRACE_EVENT(kvm_track_tsc,
>   		  __print_symbolic(__entry->host_clock, host_clocks))
>   );
>
> -TRACE_EVENT(kvm_write_tsc_offset,
> -	TP_PROTO(unsigned int vcpu_id, __u64 previous_tsc_offset,
> -		 __u64 next_tsc_offset),
> -	TP_ARGS(vcpu_id, previous_tsc_offset, next_tsc_offset),
> -
> -	TP_STRUCT__entry(
> -		__field( unsigned int,	vcpu_id				)
> -		__field(	__u64,	previous_tsc_offset		)
> -		__field(	__u64,	next_tsc_offset			)
> -	),
> -
> -	TP_fast_assign(
> -		__entry->vcpu_id		= vcpu_id;
> -		__entry->previous_tsc_offset	= previous_tsc_offset;
> -		__entry->next_tsc_offset	= next_tsc_offset;
> -	),
> -
> -	TP_printk("vcpu=%u prev=%llu next=%llu", __entry->vcpu_id,
> -		  __entry->previous_tsc_offset, __entry->next_tsc_offset)
> -);
> -
>   #endif /* CONFIG_X86_64 */
>
>   #endif /* _TRACE_KVM_H */
>
> --
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-- 
Yoshihiro YUNOMAE
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: yoshihiro.yunomae.ez@hitachi.com