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authorLinus Torvalds <torvalds@linux-foundation.org>2023-04-27 19:42:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-04-27 19:42:02 -0700
commit7fa8a8ee9400fe8ec188426e40e481717bc5e924 (patch)
treecc8fd6b4f936ec01e73238643757451e20478c07 /init
parent91ec4b0d11fe115581ce2835300558802ce55e6c (diff)
parent4d4b6d66db63ceed399f1fb1a4b24081d2590eb1 (diff)
downloadlwn-7fa8a8ee9400fe8ec188426e40e481717bc5e924.tar.gz
lwn-7fa8a8ee9400fe8ec188426e40e481717bc5e924.zip
Merge tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton: - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of switching from a user process to a kernel thread. - More folio conversions from Kefeng Wang, Zhang Peng and Pankaj Raghav. - zsmalloc performance improvements from Sergey Senozhatsky. - Yue Zhao has found and fixed some data race issues around the alteration of memcg userspace tunables. - VFS rationalizations from Christoph Hellwig: - removal of most of the callers of write_one_page() - make __filemap_get_folio()'s return value more useful - Luis Chamberlain has changed tmpfs so it no longer requires swap backing. Use `mount -o noswap'. - Qi Zheng has made the slab shrinkers operate locklessly, providing some scalability benefits. - Keith Busch has improved dmapool's performance, making part of its operations O(1) rather than O(n). - Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd, permitting userspace to wr-protect anon memory unpopulated ptes. - Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive rather than exclusive, and has fixed a bunch of errors which were caused by its unintuitive meaning. - Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature, which causes minor faults to install a write-protected pte. - Vlastimil Babka has done some maintenance work on vma_merge(): cleanups to the kernel code and improvements to our userspace test harness. - Cleanups to do_fault_around() by Lorenzo Stoakes. - Mike Rapoport has moved a lot of initialization code out of various mm/ files and into mm/mm_init.c. - Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for DRM, but DRM doesn't use it any more. - Lorenzo has also coverted read_kcore() and vread() to use iterators and has thereby removed the use of bounce buffers in some cases. - Lorenzo has also contributed further cleanups of vma_merge(). - Chaitanya Prakash provides some fixes to the mmap selftesting code. - Matthew Wilcox changes xfs and afs so they no longer take sleeping locks in ->map_page(), a step towards RCUification of pagefaults. - Suren Baghdasaryan has improved mmap_lock scalability by switching to per-VMA locking. - Frederic Weisbecker has reworked the percpu cache draining so that it no longer causes latency glitches on cpu isolated workloads. - Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig logic. - Liu Shixin has changed zswap's initialization so we no longer waste a chunk of memory if zswap is not being used. - Yosry Ahmed has improved the performance of memcg statistics flushing. - David Stevens has fixed several issues involving khugepaged, userfaultfd and shmem. - Christoph Hellwig has provided some cleanup work to zram's IO-related code paths. - David Hildenbrand has fixed up some issues in the selftest code's testing of our pte state changing. - Pankaj Raghav has made page_endio() unneeded and has removed it. - Peter Xu contributed some rationalizations of the userfaultfd selftests. - Yosry Ahmed has fixed an issue around memcg's page recalim accounting. - Chaitanya Prakash has fixed some arm-related issues in the selftests/mm code. - Longlong Xia has improved the way in which KSM handles hwpoisoned pages. - Peter Xu fixes a few issues with uffd-wp at fork() time. - Stefan Roesch has changed KSM so that it may now be used on a per-process and per-cgroup basis. * tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits) mm,unmap: avoid flushing TLB in batch if PTE is inaccessible shmem: restrict noswap option to initial user namespace mm/khugepaged: fix conflicting mods to collapse_file() sparse: remove unnecessary 0 values from rc mm: move 'mmap_min_addr' logic from callers into vm_unmapped_area() hugetlb: pte_alloc_huge() to replace huge pte_alloc_map() maple_tree: fix allocation in mas_sparse_area() mm: do not increment pgfault stats when page fault handler retries zsmalloc: allow only one active pool compaction context selftests/mm: add new selftests for KSM mm: add new KSM process and sysfs knobs mm: add new api to enable ksm per process mm: shrinkers: fix debugfs file permissions mm: don't check VMA write permissions if the PTE/PMD indicates write permissions migrate_pages_batch: fix statistics for longterm pin retry userfaultfd: use helper function range_in_vma() lib/show_mem.c: use for_each_populated_zone() simplify code mm: correct arg in reclaim_pages()/reclaim_clean_pages_from_list() fs/buffer: convert create_page_buffers to folio_create_buffers fs/buffer: add folio_create_empty_buffers helper ...
Diffstat (limited to 'init')
-rw-r--r--init/main.c74
1 files changed, 2 insertions, 72 deletions
diff --git a/init/main.c b/init/main.c
index c62f0c8811d7..b55954043c98 100644
--- a/init/main.c
+++ b/init/main.c
@@ -62,7 +62,6 @@
#include <linux/rmap.h>
#include <linux/mempolicy.h>
#include <linux/key.h>
-#include <linux/page_ext.h>
#include <linux/debug_locks.h>
#include <linux/debugobjects.h>
#include <linux/lockdep.h>
@@ -807,69 +806,6 @@ static inline void initcall_debug_enable(void)
}
#endif
-/* Report memory auto-initialization states for this boot. */
-static void __init report_meminit(void)
-{
- const char *stack;
-
- if (IS_ENABLED(CONFIG_INIT_STACK_ALL_PATTERN))
- stack = "all(pattern)";
- else if (IS_ENABLED(CONFIG_INIT_STACK_ALL_ZERO))
- stack = "all(zero)";
- else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL))
- stack = "byref_all(zero)";
- else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF))
- stack = "byref(zero)";
- else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_USER))
- stack = "__user(zero)";
- else
- stack = "off";
-
- pr_info("mem auto-init: stack:%s, heap alloc:%s, heap free:%s\n",
- stack, want_init_on_alloc(GFP_KERNEL) ? "on" : "off",
- want_init_on_free() ? "on" : "off");
- if (want_init_on_free())
- pr_info("mem auto-init: clearing system memory may take some time...\n");
-}
-
-/*
- * Set up kernel memory allocators
- */
-static void __init mm_init(void)
-{
- /*
- * page_ext requires contiguous pages,
- * bigger than MAX_ORDER unless SPARSEMEM.
- */
- page_ext_init_flatmem();
- init_mem_debugging_and_hardening();
- kfence_alloc_pool();
- report_meminit();
- kmsan_init_shadow();
- stack_depot_early_init();
- mem_init();
- mem_init_print_info();
- kmem_cache_init();
- /*
- * page_owner must be initialized after buddy is ready, and also after
- * slab is ready so that stack_depot_init() works properly
- */
- page_ext_init_flatmem_late();
- kmemleak_init();
- pgtable_init();
- debug_objects_mem_init();
- vmalloc_init();
- /* If no deferred init page_ext now, as vmap is fully initialized */
- if (!deferred_struct_pages)
- page_ext_init();
- /* Should be run before the first non-init thread is created */
- init_espfix_bsp();
- /* Should be run after espfix64 is set up. */
- pti_init();
- kmsan_init_runtime();
- mm_cache_init();
-}
-
#ifdef CONFIG_RANDOMIZE_KSTACK_OFFSET
DEFINE_STATIC_KEY_MAYBE_RO(CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT,
randomize_kstack_offset);
@@ -972,9 +908,6 @@ asmlinkage __visible void __init __no_sanitize_address start_kernel(void)
smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
boot_cpu_hotplug_init();
- build_all_zonelists(NULL);
- page_alloc_init();
-
pr_notice("Kernel command line: %s\n", saved_command_line);
/* parameters may set static keys */
jump_label_init();
@@ -996,13 +929,13 @@ asmlinkage __visible void __init __no_sanitize_address start_kernel(void)
/*
* These use large bootmem allocations and must precede
- * kmem_cache_init()
+ * initalization of page allocator
*/
setup_log_buf(0);
vfs_caches_init_early();
sort_main_extable();
trap_init();
- mm_init();
+ mm_core_init();
poking_init();
ftrace_init();
@@ -1634,9 +1567,6 @@ static noinline void __init kernel_init_freeable(void)
padata_init();
page_alloc_init_late();
- /* Initialize page ext after all struct pages are initialized. */
- if (deferred_struct_pages)
- page_ext_init();
do_basic_setup();