vc_screen: eliminate ifdefs from vcs_write_buf

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Introduce a new inline function called vc_compile_le16 and do the shifts
and ORs there. Depending on LE x BE.

I tried cpu_to_le16, but it ends up with worse assembly on BE for
whatever reason -- the compiler seems to be unable to optimize the swap.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200818085706.12163-9-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jiri Slaby 2020-08-18 10:56:59 +02:00 • committed by Greg Kroah-Hartman

parent 95e0d57fd4

commit d7c91c5081

1 changed files with 17 additions and 12 deletions

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drivers/tty/vt/vc_screen.c

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