[PATCH] KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE
Naveen N. Rao
naveen.n.rao at linux.vnet.ibm.com
Thu Nov 8 01:19:08 AEDT 2018
Scott Wood wrote:
> TRACE_INCLUDE_PATH and TRACE_INCLUDE_FILE are used by
> <trace/define_trace.h>, so like that #include, they should
> be outside #ifdef protection.
>
> They also need to be #undefed before defining, in case multiple trace
> headers are included by the same C file. This became the case on
> book3e after commit cf4a6085151a ("powerpc/mm: Add missing tracepoint for
> tlbie"), leading to the following build error:
>
> CC arch/powerpc/kvm/powerpc.o
> In file included from arch/powerpc/kvm/powerpc.c:51:0:
> arch/powerpc/kvm/trace.h:9:0: error: "TRACE_INCLUDE_PATH" redefined
> [-Werror]
> #define TRACE_INCLUDE_PATH .
> ^
> In file included from arch/powerpc/kvm/../mm/mmu_decl.h:25:0,
> from arch/powerpc/kvm/powerpc.c:48:
> ./arch/powerpc/include/asm/trace.h:224:0: note: this is the location of
> the previous definition
> #define TRACE_INCLUDE_PATH asm
> ^
> cc1: all warnings being treated as errors
>
> Reported-by: Christian Zigotzky <chzigotzky at xenosoft.de>
> Signed-off-by: Scott Wood <oss at buserror.net>
> ---
> arch/powerpc/kvm/trace.h | 8 ++++++--
> arch/powerpc/kvm/trace_booke.h | 9 +++++++--
> arch/powerpc/kvm/trace_hv.h | 9 +++++++--
> arch/powerpc/kvm/trace_pr.h | 9 +++++++--
> 4 files changed, 27 insertions(+), 8 deletions(-)
Thanks for getting to this. Apart from a small nit below, for this
patch:
Reviewed-by: Naveen N. Rao <naveen.n.rao at linux.vnet.ibm.com>
>
> diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h
> index 491b0f715d6b..ea1d7c808319 100644
> --- a/arch/powerpc/kvm/trace.h
> +++ b/arch/powerpc/kvm/trace.h
> @@ -6,8 +6,6 @@
>
> #undef TRACE_SYSTEM
> #define TRACE_SYSTEM kvm
> -#define TRACE_INCLUDE_PATH .
> -#define TRACE_INCLUDE_FILE trace
The convention is to also have the TRACE_SYSTEM macro defined outside
and before the header #ifdef. So, that would be good to do as part of
this cleanup as well. If not, I can send a patch later.
Thanks,
Naveen
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