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Filename Latest commit message Latest commit date
Rik van Riel 5462bc3a9a x86/mm/tlb: Always use lazy TLB mode 
On most workloads, the number of context switches far exceeds the
number of TLB flushes sent. Optimizing the context switches, by always
using lazy TLB mode, speeds up those workloads.

This patch results in about a 1% reduction in CPU use on a two socket
Broadwell system running a memcache like workload.

Cc: npiggin@gmail.com
Cc: efault@gmx.de
Cc: will.deacon@arm.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel-team@fb.com
Cc: hpa@zytor.com
Cc: luto@kernel.org
Tested-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Rik van Riel <riel@surriel.com>
(cherry picked from commit 95b0e6357d)
Acked-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180716190337.26133-7-riel@surriel.com
2018-10-09 16:51:11 +02:00
arch x86/mm/tlb: Always use lazy TLB mode 2018-10-09 16:51:11 +02:00
block block: use nanosecond resolution for iostat 2018-09-21 20:26:59 -06:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto DMAengine updates for v4.19-rc1 2018-08-18 15:55:59 -07:00
Documentation x86/mm/doc: Enhance the x86-64 virtual memory layout descriptions 2018-10-06 16:36:12 +02:00
drivers iommu/amd: Remap the IOMMU device table with the memory encryption mask for kdump 2018-10-06 12:08:24 +02:00
firmware
fs proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted() 2018-10-09 11:57:28 +02:00
include Merge branch 'tlb/asm-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into x86/mm 2018-10-09 16:50:43 +02:00
init Kbuild updates for v4.19 (2nd) 2018-08-25 13:40:38 -07:00
ipc ipc/shm: properly return EIDRM in shm_lock() 2018-09-04 16:45:02 -07:00
kernel kexec: Allocate decrypted control pages for kdump if SME is enabled 2018-10-06 12:01:51 +02:00
lib lib/Kconfig.debug: fix three typos in help text 2018-09-04 16:45:02 -07:00
LICENSES
mm x86/mm: Page size aware flush_tlb_mm_range() 2018-10-09 16:51:11 +02:00
net net/ipv6: do not copy dst flags on rt init 2018-09-17 19:42:14 -07:00
samples
scripts linux-kselftest-4.19-rc5 2018-09-17 07:24:28 +02:00
security Revert "x86/mm/legacy: Populate the user page-table with user pgd's" 2018-09-14 17:08:45 +02:00
sound ASoC: Fixes for v4.19 2018-09-17 18:59:21 +02:00
tools Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-09-23 08:09:16 +02:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt KVM: Remove obsolete kvm_unmap_hva notifier backend 2018-09-07 15:06:02 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge branch 'tlb/asm-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into x86/mm 2018-10-09 16:50:43 +02:00
Makefile Linux 4.19-rc5 2018-09-23 19:15:18 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.