[RFC] NUMA balancing: reduce TLB flush via delaying mapping on hint page fault (Huang Ying) https://lkml.kernel.org/r/20210329062651.2487905-1-ying.huang@intel.com
NUMA balancing shots down TLBs on all CPUs that recently run hint-faulted process during the migration of the hint-faulted page to appropriate node. This commit delays the TLB shootdown to reduce the overhead. With pmbench, it reduced TLB shooting IPI up to 99%, though it didn’t makde visible benchmark score changes.
[RFC v2 00/43] PKRAM: Preserved-over-Kexec RAM (Anthony Yznaga) https://lkml.
[PATCH 0/3 v5] Introduce a bulk order-0 page allocator (Mel Gorman) https://lkml.kernel.org/r/20210322091845.16437-1-mgorman@techsingularity.net
Fifth version of the order-0 pages bulk allocator. In this version, the API users are dropped from the patchset, because the callers are not confirmed if they prefer an array or list interface.
[PATCH] mm: cma: add trace events for CMA alloc perf testing (Georgi Djakov) https://lkml.kernel.org/r/20210324160740.15901-1-georgi.djakov@linaro.org
This patch adds tracepoints for CMA and page migrations. Those aims to be used for performance debugging of CMA.
File THP and HWPoison (Matthew Wilcox) https://lkml.kernel.org/r/20210316140947.GA3420@casper.infradead.org
THP is not splitted for file-backed pages when it got memory failure. This mail describes the problem in detail and propose some change to mitigate it.
Issue with kfence and kmemleak (Luis Henriques) https://lkml.kernel.org/r/YFDf6iKH1p/jGnM0@suse.de
Luis found a problem when kmemleak and kfence is used together. A fix is made by Marco.
[PATCH v4 00/13] Introduced multi-preference mempolicy (Feng Tang) https://lkml.kernel.org/r/1615952410-36895-1-git-send-email-feng.tang@intel.com
This is the fourth version of the patchset.
[PATCH 00/10] [v6] Migrate Pages in lieu of discard (Dave Hansen) https://lkml.kernel.org/r/20210304235949.7922C1C3@viggo.jf.intel.com
When the system configured with both DRAM and persistent memory, current kernel starts reclamation when DRAM fulls even though there are some space in persistent memory. And from some point, all page allocation is done on the persistent memory only, even though DRAM has some free slots now.
This patchset mitigates the problem by migrating pages that about to be reclaimed to persistent memory.
[PATCH] mm: introduce clear all vm events counters (Pintu Kumar) https://lkml.kernel.org/r/1614595766-7640-1-git-send-email-pintu@codeaurora.org
Because the vmstat data is only cumulated, users should calculate the diff manually or just reboot. This commit adds a procfs file that can be used to clear all vmstat counters.
[PATCH 0/5] Introduce a bulk order-0 page allocator with two in-tree users (Mel Gorman) https://lkml.kernel.org/r/20210301161200.18852-1-mgorman@techsingularity.net
This patchset introduces a bulk order-0 page allocator. It also makes the sunrpc and the network page pool to use that.
I realized I didn’t introduce a good, intuitive example use case of DAMON[0] for profiling so far, though DAMON is not for only profiling. One straightforward and realistic usage of DAMON as a profiling tool would be recording the monitoring results with callstack and visualize those by timeline together.
For example, below shows that visualization for a realistic workload, namely ‘fft’ in SPLASH-2X benchmark suite. The upper-most graph shows how DAMON-detected working set size of the workload (y-axis) changes by time (x-axis).
[PATCH v11 00/14] prohibit pinning pages in ZONE_MOVABLE (Pavel Tatashin) https://lkml.kernel.org/r/20210215161349.246722-1-pasha.tatashin@soleen.com
The 11th version of the patchset making ZONE_MOVABLE really movable. In this version, a build error on i386 is fixed.
[RFC PATCH] mm, oom: introduce vm.sacrifice_hugepage_on_oom https://lkml.kernel.org/r/20210216030713.79101-1-eiichi.tsukata@nutanix.com
This RFC patch introduces yet another sysctl knob called vm.sacrifice_hugepage_on_oom. When it is turned on, it tries to free available hugepages before waking oom-killer up.
[RFC] Hugepage collapse in process context (David Rientjes) https://lkml.
[PATCH v2] mm: cma: support sysfs (Minchan Kim) https://lkml.kernel.org/r/20210208180142.2765456-1-minchan@kernel.org
This patch introduces sysfs interface for CMA that shows stats including number of CMA allocation attempts and failures.
[PATCH v10 00/14] prohibit pinning pages in ZONE_MOVABLE (Pavel Tatashin) https://lkml.kernel.org/r/20210211162427.618913-1-pasha.tatashin@soleen.com
The 10th version of the patchset making ZONE_MOVABLE really movable.
Linux 5.11 (Linus Torvalds) https://lkml.kernel.org/r/CAHk-=wg8LpRi9+P2_V+ehJ2_EoJifNh2QmVf47aLXfkCd-1UAQ@mail.gmail.com
Nothing strange happened last week, so Linus released v5.11 as expected. The number of changes from the rc7 to this release is actually even smaller than average.
[RFC 00/20] TLB batching consolidation and enhancements (Nadav Amit) https://lkml.kernel.org/r/20210131001132.3368247-1-namit@vmware.com
This patchset prepares more aggressive TLB flushing batching by consolidating a few TLB batching methods.
[PATCH v9 00/14] prohibit pinning pages in ZONE_MOVABLE (Pavel Tatashin) https://lkml.kernel.org/r/20210201153827.444374-1-pasha.tatashin@soleen.com
This patchset makes ZONE_MOVABLE really movable by prohibiting pinning of pages in the zone.
Augmented Page Reclaim (Yu Zhao) https://lkml.kernel.org/r/YBkT6175GmMWBvw3@google.com
This mail shares a part of decade researh/experimentation in memory overcommit at Google. The author wants to start submitting patch based on responses.
[RFC][PATCH 00/13] [v5] Migrate Pages in lieu of discard (Dave Hansen) https://lkml.kernel.org/r/20210126003411.2AC51464@viggo.jf.intel.com
If a system has a small DRAM and a large persistent memory (PMEM), reclamation starts when DRAM fills up, and newer allocations will done on PMEM. This patchset makes the reclaim logic to migrate pages to PMEM instead of just discarding it.
[PATCH v3 00/25] Page folios (Matthew Wilcox) https://lkml.kernel.org/r/20210128070404.1922318-1-willy@infradead.org
This patchset introduces a new data structure called page folio.