Re: [PATCH] kbuild: fix ksym_dep_filter when multiple EXPORT_SYMBOL() on the same line

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On Thu, Apr 28, 2016 at 05:29:42PM -0400, Nicolas Pitre wrote:
> In kernel/cgroup.c there is:
> 
>     #define SUBSYS(_x)                                             \
>         DEFINE_STATIC_KEY_TRUE(_x ## _cgrp_subsys_enabled_key);    \
>         DEFINE_STATIC_KEY_TRUE(_x ## _cgrp_subsys_on_dfl_key);     \
>         EXPORT_SYMBOL_GPL(_x ## _cgrp_subsys_enabled_key);         \
>         EXPORT_SYMBOL_GPL(_x ## _cgrp_subsys_on_dfl_key);
> 
> The expansion of this macro causes multiple EXPORT_SYMBOL_GPL() instances
> to appear on the same preprocessor line output, confusing the sed script
> expecting only one of them per line.  Unfortunately this can't be fixed
> nicely in the sed script as sed's regexp can't do non greedy matching.
> 
> Fix this by turning any semicolon into a line break before filtering.
> 
> Reported-by: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Nicolas Pitre <nico@xxxxxxxxxx>

Applied to kbuild.git#kbuild.

Michal
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