On Wednesday, 25 July 2018 04:20:29 MSK Dmitry Osipenko wrote: > On Wednesday, 25 July 2018 03:37:33 MSK Mauro Carvalho Chehab wrote: > > Em Wed, 25 Jul 2018 01:38:37 +0300 > > > > Dmitry Osipenko <digetx@xxxxxxxxx> escreveu: > > > 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. > > > > This is just a call for smatch/sparse: > > > > #!/bin/bash > > /devel/smatch/smatch -p=kernel $@ > > # This is too pedantic and produce lots of false-positives > > #/devel/smatch/smatch --two-passes -- -p=kernel $@ > > /devel/sparse/sparse $@ > > > > However, the problem here is that you're doing a 64 bits division. > > That causes compilation to break with 32 bits. you need to use > > do_div & friends. > > The tegra-vde driver code is fine, it is a known issue with the kernels > checker [0]. Unfortunately the patch for the checker haven't been applied > yet. > > [0] https://www.spinics.net/lists/kernel/msg2824058.html Mauro, are you going to un-reject patch [0] and apply it or there is some action needed from my side now? [0] https://patchwork.linuxtv.org/patch/51002/ -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
