Anton Ivanov 742f3c8193 um: Optimize Flush TLB for force/fork case ... When UML handles a fork the page tables need to be brought up to date. That was done using brute force - full tlb flush. This is actually unnecessary, because the mapped-in mappings are all correct and the only mappings which need to be updated after a flush are any unmaps (so that paging works) as well as any pending protection changes. This optimization squeezes out up to 3% from a full kernel rebuild time under memory pressure. Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>		2018-12-27 22:48:34 +01:00
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configs	um: defconfig: Cleanup from old Kconfig options	2017-09-13 22:32:51 +02:00
drivers	um: Add support for DISCARD in the UBD Driver	2018-12-27 22:48:20 +01:00
include	um: Avoid marking pages with "changed protection"	2018-12-27 22:48:34 +01:00
kernel	um: Optimize Flush TLB for force/fork case	2018-12-27 22:48:34 +01:00
os-Linux	um: Add support for DISCARD in the UBD Driver	2018-12-27 22:48:20 +01:00
scripts	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
.gitignore	um: tell git to ignore generated files	2010-03-06 11:26:28 -08:00
Kconfig	um: Add HAVE_DEBUG_BUGVERBOSE	2018-12-27 22:48:11 +01:00
Kconfig.debug	um: Make GCOV depend on !KCOV	2018-12-27 22:48:19 +01:00
Makefile	kbuild: rename LDFLAGS to KBUILD_LDFLAGS	2018-08-24 08:22:08 +09:00
Makefile-os-Linux	x86, um: get rid of arch/um/os symlink	2008-10-22 22:55:22 -07:00
Makefile-skas