Changes in debug_page_alloc.c

f088104d837a991c65e51fa30bb4196169b3244d - Merge drm/drm-next into drm-intel-gt-next

Tue, 16 Sep 2025 10:53:20 +0000

Merge drm/drm-next into drm-intel-gt-nextBackmerge in order to get the commit: 048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")To drm-intel-gt-next as there are followup fixes to be applied.Signed-off-by: Joonas Lahtinen List of files: /linux/mm/debug_page_alloc.c

ab93e0dd72c37d378dd936f031ffb83ff2bd87ce - Merge branch 'next' into for-linus

Wed, 06 Aug 2025 17:08:54 +0000

Merge branch 'next' into for-linusPrepare input updates for 6.17 merge window. List of files: /linux/mm/debug_page_alloc.c

a7bee4e7f78089c101be2ad51f4b5ec64782053e - Merge tag 'ib-mfd-gpio-input-pwm-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next

Mon, 04 Aug 2025 06:28:48 +0000

Merge tag 'ib-mfd-gpio-input-pwm-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into nextMerge an immutable branch between MFD, GPIO, Input and PWM to resolveconflicts for the merge window pull request. List of files: /linux/mm/debug_page_alloc.c

74f1af95820fc2ee580a775a3a17c416db30b38c - Merge remote-tracking branch 'drm/drm-next' into msm-next

Sun, 29 Jun 2025 02:54:49 +0000

Merge remote-tracking branch 'drm/drm-next' into msm-nextBack-merge drm-next to (indirectly) get arm-smmu updates for makingstall-on-fault more reliable.Signed-off-by: Rob Clark List of files: /linux/mm/debug_page_alloc.c

c598d5eb9fb331ba17bc9ad67ae9a2231ca5aca5 - Merge drm/drm-next into drm-misc-next

Wed, 11 Jun 2025 07:01:34 +0000

Merge drm/drm-next into drm-misc-nextBackmerging to forward to v6.16-rc1Signed-off-by: Thomas Zimmermann List of files: /linux/mm/debug_page_alloc.c

86e2d052c2320bf12571a5d96b16c2745e1cfc5e - Merge drm/drm-next into drm-xe-next

Mon, 09 Jun 2025 16:26:55 +0000

Merge drm/drm-next into drm-xe-nextBackmerging to bring in 6.16Signed-off-by: Thomas Hellström List of files: /linux/mm/debug_page_alloc.c

34c55367af96f62e89221444f04487440ebc6487 - Merge drm/drm-next into drm-intel-next

Mon, 09 Jun 2025 09:40:46 +0000

Merge drm/drm-next into drm-intel-nextSync to v6.16-rc1, among other things to get the fixed size GENMASK_U*()and BIT_U*() macros.Signed-off-by: Jani Nikula List of files: /linux/mm/debug_page_alloc.c

00c010e130e58301db2ea0cec1eadc931e1cb8cf - Merge tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Sat, 31 May 2025 22:44:16 +0000

Merge tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mmPull MM updates from Andrew Morton: - "Add folio_mk_pte()" from Matthew Wilcox simplifies the act of creating a pte which addresses the first page in a folio and reduces the amount of plumbing which architecture must implement to provide this. - "Misc folio patches for 6.16" from Matthew Wilcox is a shower of largely unrelated folio infrastructure changes which clean things up and better prepare us for future work. - "memory,x86,acpi: hotplug memory alignment advisement" from Gregory Price adds early-init code to prevent x86 from leaving physical memory unused when physical address regions are not aligned to memory block size. - "mm/compaction: allow more aggressive proactive compaction" from Michal Clapinski provides some tuning of the (sadly, hard-coded (more sadly, not auto-tuned)) thresholds for our invokation of proactive compaction. In a simple test case, the reduction of a guest VM's memory consumption was dramatic. - "Minor cleanups and improvements to swap freeing code" from Kemeng Shi provides some code cleaups and a small efficiency improvement to this part of our swap handling code. - "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin adds the ability for a ptracer to modify syscalls arguments. At this time we can alter only "system call information that are used by strace system call tampering, namely, syscall number, syscall arguments, and syscall return value. This series should have been incorporated into mm.git's "non-MM" branch, but I goofed. - "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more efficiently get at the info about guard regions. - "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan implements that fix. No runtime effect is expected because validate_page_before_insert() happens to fix up this error. - "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David Hildenbrand basically brings uprobe text poking into the current decade. Remove a bunch of hand-rolled implementation in favor of using more current facilities. - "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman Khandual provides enhancements and generalizations to the pte dumping code. This might be needed when 128-bit Page Table Descriptors are enabled for ARM. - "Always call constructor for kernel page tables" from Kevin Brodsky ensures that the ctor/dtor is always called for kernel pgtables, as it already is for user pgtables. This permits the addition of more functionality such as "insert hooks to protect page tables". This change does result in various architectures performing unnecesary work, but this is fixed up where it is anticipated to occur. - "Rust support for mm_struct, vm_area_struct, and mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM structures. - "fix incorrectly disallowed anonymous VMA merges" from Lorenzo Stoakes takes advantage of some VMA merging opportunities which we've been missing for 15 years. - "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB flushing. Instead of flushing each address range in the provided iovec, we batch the flushing across all the iovec entries. The syscall's cost was approximately halved with a microbenchmark which was designed to load this particular operation. - "Track node vacancy to reduce worst case allocation counts" from Sidhartha Kumar makes the maple tree smarter about its node preallocation. stress-ng mmap performance increased by single-digit percentages and the amount of unnecessarily preallocated memory was dramaticelly reduced. - "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes a few unnecessary things which Baoquan noted when reading the code. - ""Enhance sysfs handling for memory hotplug in weighted interleave" from Rakie Kim "enhances the weighted interleave policy in the memory management subsystem by improving sysfs handling, fixing memory leaks, and introducing dynamic sysfs updates for memory hotplug support". Fixes things on error paths which we are unlikely to hit. - "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory" from SeongJae Park introduces new DAMOS quota goal metrics which eliminate the manual tuning which is required when utilizing DAMON for memory tiering. - "mm/vmalloc.c: code cleanup and improvements" from Baoquan He provides cleanups and small efficiency improvements which Baoquan found via code inspection. - "vmscan: enforce mems_effective during demotion" from Gregory Price changes reclaim to respect cpuset.mems_effective during demotion when possible. because presently, reclaim explicitly ignores cpuset.mems_effective when demoting, which may cause the cpuset settings to violated. This is useful for isolating workloads on a multi-tenant system from certain classes of memory more consistently. - "Clean up split_huge_pmd_locked() and remove unnecessary folio pointers" from Gavin Guo provides minor cleanups and efficiency gains in in the huge page splitting and migrating code. - "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache for `struct mem_cgroup', yielding improved memory utilization. - "add max arg to swappiness in memory.reclaim and lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness=" argument for memory.reclaim MGLRU's lru_gen. This directs proactive reclaim to reclaim from only anon folios rather than file-backed folios. - "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the first step on the path to permitting the kernel to maintain existing VMs while replacing the host kernel via file-based kexec. At this time only memblock's reserve_mem is preserved. - "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides and uses a smarter way of looping over a pfn range. By skipping ranges of invalid pfns. - "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning when a task is pinned a single NUMA mode. Dramatic performance benefits were seen in some real world cases. - "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank Garg addresses a warning which occurs during memory compaction when using JFS. - "move all VMA allocation, freeing and duplication logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more appropriate mm/vma.c. - "mm, swap: clean up swap cache mapping helper" from Kairui Song provides code consolidation and cleanups related to the folio_index() function. - "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that. - "memcg: Fix test_memcg_min/low test failures" from Waiman Long addresses some bogus failures which are being reported by the test_memcontrol selftest. - "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo Stoakes commences the deprecation of file_operations.mmap() in favor of the new file_operations.mmap_prepare(). The latter is more restrictive and prevents drivers from messing with things in ways which, amongst other problems, may defeat VMA merging. - "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's one. This is a step along the way to making memcg and objcg charging NMI-safe, which is a BPF requirement. - "mm/damon: minor fixups and improvements for code, tests, and documents" from SeongJae Park is yet another batch of miscellaneous DAMON changes. Fix and improve minor problems in code, tests and documents. - "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg stats to be irq safe. Another step along the way to making memcg charging and stats updates NMI-safe, a BPF requirement. - "Let unmap_hugepage_range() and several related functions take folio instead of page" from Fan Ni provides folio conversions in the hugetlb code.* tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (285 commits) mm: pcp: increase pcp->free_count threshold to trigger free_high mm/hugetlb: convert use of struct page to folio in __unmap_hugepage_range() mm/hugetlb: refactor __unmap_hugepage_range() to take folio instead of page mm/hugetlb: refactor unmap_hugepage_range() to take folio instead of page mm/hugetlb: pass folio instead of page to unmap_ref_private() memcg: objcg stock trylock without irq disabling memcg: no stock lock for cpu hot-unplug memcg: make __mod_memcg_lruvec_state re-entrant safe against irqs memcg: make count_memcg_events re-entrant safe against irqs memcg: make mod_memcg_state re-entrant safe against irqs memcg: move preempt disable to callers of memcg_rstat_updated memcg: memcg_rstat_updated re-entrant safe against irqs mm: khugepaged: decouple SHMEM and file folios' collapse selftests/eventfd: correct test name and improve messages alloc_tag: check mem_profiling_support in alloc_tag_init Docs/damon: update titles and brief introductions to explain DAMOS selftests/damon/_damon_sysfs: read tried regions directories in order mm/damon/tests/core-kunit: add a test for damos_set_filters_default_reject() mm/damon/paddr: remove unused variable, folio_list, in damon_pa_stat() mm/damon/sysfs-schemes: fix wrong comment on damons_sysfs_quota_goal_metric_strs ... List of files: /linux/mm/debug_page_alloc.c

4048774ea5af1721e5925b7cc0a74f1efad05c4d - mm/debug_page_alloc: improve error message for invalid guardpage minorder

Sun, 27 Apr 2025 10:04:41 +0000

mm/debug_page_alloc: improve error message for invalid guardpage minorderWhen an invalid debug_guardpage_minorder value is provided, include theuser input in the error message. This helps users and developers diagnoseconfiguration issues more easily.No functional change.Link: https://lkml.kernel.org/r/20250427100442.958352-3-ye.liu@linux.devSigned-off-by: Ye Liu Acked-by: David Hildenbrand Reviewed-by: Anshuman Khandual Acked-by: Mike Rapoport (Microsoft) Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Rik van Riel Cc: Vlastimil Babka Signed-off-by: Andrew Morton List of files: /linux/mm/debug_page_alloc.c

c771600c6af14749609b49565ffb4cac2959710d - Merge drm/drm-next into drm-intel-gt-next

Wed, 05 Feb 2025 09:29:14 +0000

Merge drm/drm-next into drm-intel-gt-nextWe need4ba4f1afb6a9 ("perf: Generic hotplug support for a PMU with a scope")in order to land a i915 PMU simplification and a fix. That landed in 6.12and we are stuck at 6.9 so lets bump things forward.Signed-off-by: Tvrtko Ursulin List of files: /linux/mm/debug_page_alloc.c

36ec807b627b4c0a0a382f0ae48eac7187d14b2b - Merge branch 'next' into for-linus

Fri, 20 Sep 2024 08:24:24 +0000

Merge branch 'next' into for-linusPrepare input updates for 6.12 merge window. List of files: /linux/mm/debug_page_alloc.c

3daee2e4b3568f0ed88b0598df96547fcf21cb9b - Merge tag 'v6.10' into next

Mon, 15 Jul 2024 22:50:05 +0000

Merge tag 'v6.10' into nextSync up with mainline to bring in device_for_each_child_node_scoped()and other newer APIs. List of files: /linux/mm/debug_page_alloc.c

a23e1966932464e1c5226cb9ac4ce1d5fc10ba22 - Merge branch 'next' into for-linus

Mon, 15 Jul 2024 21:03:44 +0000

Merge branch 'next' into for-linusPrepare input updates for 6.11 merge window. List of files: /linux/mm/debug_page_alloc.c

0c8ea05e9b3d8e5287e2a968f2a2e744dfd31b99 - Merge branch 'tip/x86/cpu'

Thu, 04 Jul 2024 14:00:24 +0000

Merge branch 'tip/x86/cpu'The Lunarlake patches rely on the new VFM stuff.Signed-off-by: Peter Zijlstra List of files: /linux/mm/debug_page_alloc.c

afeea2758b4f1210361ce2a91d8fa3e7df606ad2 - Merge drm-misc-next-2024-07-04 into drm-misc-next-fixes

Thu, 04 Jul 2024 13:19:33 +0000

Merge drm-misc-next-2024-07-04 into drm-misc-next-fixesLet's start the drm-misc-next-fixes cycle.Signed-off-by: Maxime Ripard List of files: /linux/mm/debug_page_alloc.c

d754ed2821fd9675d203cb73c4afcd593e28b7d0 - Merge drm/drm-next into drm-intel-next

Wed, 19 Jun 2024 08:38:31 +0000

Merge drm/drm-next into drm-intel-nextSync to v6.10-rc3.Signed-off-by: Jani Nikula List of files: /linux/mm/debug_page_alloc.c

89aa02edaa30e4327ebc8fca9b80795bbfd4ce9b - Merge drm/drm-next into drm-xe-next

Wed, 12 Jun 2024 15:31:42 +0000

Merge drm/drm-next into drm-xe-nextNeeded to get tracing cleanup and add mmio tracing series.Signed-off-by: Rodrigo Vivi List of files: /linux/mm/debug_page_alloc.c

92815da4576a495cb6362cdfb132152fccc2222d - Merge remote-tracking branch 'drm-misc/drm-misc-next' into HEAD

Wed, 12 Jun 2024 13:51:59 +0000

Merge remote-tracking branch 'drm-misc/drm-misc-next' into HEADMerge drm-misc-next tree into the msm-next tree in order to be able touse HDMI connector framework for the MSM HDMI driver. List of files: /linux/mm/debug_page_alloc.c

594ce0b8a998aa4d05827cd7c0d0dcec9a1e3ae2 - Merge topic branches 'clkdev' and 'fixes' into for-linus

Mon, 10 Jun 2024 11:03:21 +0000

Merge topic branches 'clkdev' and 'fixes' into for-linus List of files: /linux/mm/debug_page_alloc.c

f73a058be5d70dd81a43f16b2bbff4b1576a7af8 - Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Tue, 28 May 2024 20:21:34 +0000

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixesv6.10-rc1 is released, forward from v6.9Signed-off-by: Maarten Lankhorst List of files: /linux/mm/debug_page_alloc.c