98931dd95f
Pull MM updates from Andrew Morton:
"Almost all of MM here. A few things are still getting finished off,
reviewed, etc.
- Yang Shi has improved the behaviour of khugepaged collapsing of
readonly file-backed transparent hugepages.
- Johannes Weiner has arranged for zswap memory use to be tracked and
managed on a per-cgroup basis.
- Munchun Song adds a /proc knob ("hugetlb_optimize_vmemmap") for
runtime enablement of the recent huge page vmemmap optimization
feature.
- Baolin Wang contributes a series to fix some issues around hugetlb
pagetable invalidation.
- Zhenwei Pi has fixed some interactions between hwpoisoned pages and
virtualization.
- Tong Tiangen has enabled the use of the presently x86-only
page_table_check debugging feature on arm64 and riscv.
- David Vernet has done some fixup work on the memcg selftests.
- Peter Xu has taught userfaultfd to handle write protection faults
against shmem- and hugetlbfs-backed files.
- More DAMON development from SeongJae Park - adding online tuning of
the feature and support for monitoring of fixed virtual address
ranges. Also easier discovery of which monitoring operations are
available.
- Nadav Amit has done some optimization of TLB flushing during
mprotect().
- Neil Brown continues to labor away at improving our swap-over-NFS
support.
- David Hildenbrand has some fixes to anon page COWing versus
get_user_pages().
- Peng Liu fixed some errors in the core hugetlb code.
- Joao Martins has reduced the amount of memory consumed by
device-dax's compound devmaps.
- Some cleanups of the arch-specific pagemap code from Anshuman
Khandual.
- Muchun Song has found and fixed some errors in the TLB flushing of
transparent hugepages.
- Roman Gushchin has done more work on the memcg selftests.
... and, of course, many smaller fixes and cleanups. Notably, the
customary million cleanup serieses from Miaohe Lin"
* tag 'mm-stable-2022-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (381 commits)
mm: kfence: use PAGE_ALIGNED helper
selftests: vm: add the "settings" file with timeout variable
selftests: vm: add "test_hmm.sh" to TEST_FILES
selftests: vm: check numa_available() before operating "merge_across_nodes" in ksm_tests
selftests: vm: add migration to the .gitignore
selftests/vm/pkeys: fix typo in comment
ksm: fix typo in comment
selftests: vm: add process_mrelease tests
Revert "mm/vmscan: never demote for memcg reclaim"
mm/kfence: print disabling or re-enabling message
include/trace/events/percpu.h: cleanup for "percpu: improve percpu_alloc_percpu event trace"
include/trace/events/mmflags.h: cleanup for "tracing: incorrect gfp_t conversion"
mm: fix a potential infinite loop in start_isolate_page_range()
MAINTAINERS: add Muchun as co-maintainer for HugeTLB
zram: fix Kconfig dependency warning
mm/shmem: fix shmem folio swapoff hang
cgroup: fix an error handling path in alloc_pagecache_max_30M()
mm: damon: use HPAGE_PMD_SIZE
tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate
nodemask.h: fix compilation error with GCC12
...
65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <stdbool.h>
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#include <stdlib.h>
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#include "../kselftest.h"
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#define PAGE_SIZE 4096
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#define MB(x) (x << 20)
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#define USEC_PER_SEC 1000000L
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#define NSEC_PER_SEC 1000000000L
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/*
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* Checks if two given values differ by less than err% of their sum.
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*/
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static inline int values_close(long a, long b, int err)
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{
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return abs(a - b) <= (a + b) / 100 * err;
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}
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extern int cg_find_unified_root(char *root, size_t len);
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extern char *cg_name(const char *root, const char *name);
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extern char *cg_name_indexed(const char *root, const char *name, int index);
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extern char *cg_control(const char *cgroup, const char *control);
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extern int cg_create(const char *cgroup);
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extern int cg_destroy(const char *cgroup);
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extern int cg_read(const char *cgroup, const char *control,
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char *buf, size_t len);
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extern int cg_read_strcmp(const char *cgroup, const char *control,
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const char *expected);
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extern int cg_read_strstr(const char *cgroup, const char *control,
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const char *needle);
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extern long cg_read_long(const char *cgroup, const char *control);
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long cg_read_key_long(const char *cgroup, const char *control, const char *key);
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extern long cg_read_lc(const char *cgroup, const char *control);
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extern int cg_write(const char *cgroup, const char *control, char *buf);
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int cg_write_numeric(const char *cgroup, const char *control, long value);
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extern int cg_run(const char *cgroup,
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int (*fn)(const char *cgroup, void *arg),
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void *arg);
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extern int cg_enter(const char *cgroup, int pid);
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extern int cg_enter_current(const char *cgroup);
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extern int cg_enter_current_thread(const char *cgroup);
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extern int cg_run_nowait(const char *cgroup,
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int (*fn)(const char *cgroup, void *arg),
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void *arg);
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extern int get_temp_fd(void);
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extern int alloc_pagecache(int fd, size_t size);
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extern int alloc_anon(const char *cgroup, void *arg);
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extern int is_swap_enabled(void);
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extern int set_oom_adj_score(int pid, int score);
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extern int cg_wait_for_proc_count(const char *cgroup, int count);
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extern int cg_killall(const char *cgroup);
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int proc_mount_contains(const char *option);
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extern ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size);
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extern int proc_read_strstr(int pid, bool thread, const char *item, const char *needle);
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extern pid_t clone_into_cgroup(int cgroup_fd);
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extern int clone_reap(pid_t pid, int options);
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extern int clone_into_cgroup_run_wait(const char *cgroup);
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extern int dirfd_open_opath(const char *dir);
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extern int cg_prepare_for_wait(const char *cgroup);
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extern int memcg_prepare_for_wait(const char *cgroup);
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extern int cg_wait_for(int fd);
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