Re: [PATCH v1] media: staging: tegra-vde: Replace debug messages with trace points

[Dmitry Osipenko]

On Wednesday, 25 July 2018 01:06:52 MSK Mauro Carvalho Chehab wrote:
> Em Sat,  7 Jul 2018 19:20:49 +0300
> 
> Dmitry Osipenko <digetx@xxxxxxxxx> escreveu:
> > Trace points are much more efficient than debug messages for extensive
> > tracing and could be conveniently enabled / disabled dynamically, hence
> > let's replace debug messages with the trace points.
> 
> This patch require some work:
> 
> $ make ARCH=i386  CF=-D__CHECK_ENDIAN__ CONFIG_DEBUG_SECTION_MISMATCH=y C=1
> W=1 CHECK='compile_checks' M=drivers/staging/media
> 
> ./include/linux/slab.h:631:13: error: undefined identifier
> '__builtin_mul_overflow' ./include/linux/slab.h:631:13: warning: call with
> no type!
> fixdep: error opening file: drivers/staging/media/tegra-vde/trace.h: No such
> file or directory

  CHECK   drivers/staging/media/tegra-vde/tegra-vde.c
/bin/sh: compile_checks: command not found

Upstream kernel doesn't have "compile_checks" script and I can't find it 
anywhere else.