Re: [Qemu-devel] [RFC] Add a stp file for usage from build directory

[Paolo Bonzini]

Il 27/05/2013 04:19, Alon Levy ha scritto:
> For systemtap the location of the process being tapped is crucial, so
> the existing stp file requires installation to use. A new file providing
> qemu.local prefixed probes lets scripts run without an install step.
> 
> Signed-off-by: Alon Levy <address@hidden>
> ---
> 
>  Makefile.target | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/Makefile.target b/Makefile.target
> index ce4391f..5d176e2 100644
> --- a/Makefile.target
> +++ b/Makefile.target
> @@ -35,7 +35,7 @@ config-target.h: config-target.h-timestamp
>  config-target.h-timestamp: config-target.mak
>  
>  ifdef CONFIG_TRACE_SYSTEMTAP
> -stap: $(QEMU_PROG).stp
> +stap: $(QEMU_PROG).stp $(QEMU_PROG).local.stp
>  
>  ifdef CONFIG_USER_ONLY
>  TARGET_TYPE=user
> @@ -51,6 +51,17 @@ $(QEMU_PROG).stp: $(SRC_PATH)/trace-events
>               --target-arch=$(TARGET_ARCH) \
>               --target-type=$(TARGET_TYPE) \
>               < $< > $@,"  GEN   $(TARGET_DIR)$(QEMU_PROG).stp")
> +
> +$(QEMU_PROG).local.stp: $(SRC_PATH)/trace-events
> +     $(call quiet-command,$(TRACETOOL) \
> +             --format=stap \
> +             --backend=$(TRACE_BACKEND) \
> +             --binary=$(SRC_PATH)/$(TARGET_DIR)$(QEMU_PROG) \

This is not the build directory for out-of-tree builds.

> +             --probe-prefix=qemu.local \

Why change the prefix?

Paolo

> +             --target-arch=$(TARGET_ARCH) \
> +             --target-type=$(TARGET_TYPE) \
> +             < $< > $@,"  GEN   $(TARGET_DIR)$(QEMU_PROG).local.stp")
> +
>  else
>  stap:
>  endif
>