Commits
Rik van Riel committed 5462bc3a9a3
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 95b0e6357d3e4e05349668940d7ff8f3b7e7e11e) 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