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/linux/tools/testing/selftests/mm/
H A Dkhugepaged.c67 void (*collapse)(const char *msg, char *p, int nr_hpages, member
275 * The latter is ineligible for collapse by MADV_COLLAPSE in alloc_hpage()
332 ksft_print_msg("Creating %s for collapse%s...", finfo.path, in file_setup_area_common()
358 ksft_print_msg("Opening %s %s for collapse...", finfo.path, in file_setup_area_common()
439 finfo.fd = memfd_create("khugepaged-selftest-collapse-shmem", 0); in shmem_setup_area()
525 * read&write file collapse succeeds for MADV_COLLAPSE because dirty in __madvise_collapse()
526 * folios are written back after collapse fails for dirty folios and in __madvise_collapse()
527 * another collapse is attempted. in __madvise_collapse()
596 * read&write file collapse fails since khugepaged does not flush in khugepaged_collapse()
632 /* Set mTHP setting for mTHP collapse */ in mthp_khugepaged_collapse()
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H A Dcow.c1308 /* Collapse before actually COW-sharing the page. */ in do_test_anon_thp_collapse()
1374 * able to actually collapse. in do_test_anon_thp_collapse()
1386 /* Collapse before anyone modified the COW-shared page. */ in do_test_anon_thp_collapse()
1458 * collapse") might easily get COW handling wrong when not collapsing
1465 /* Basic COW test, but collapse after COW-sharing a full THP. */
1471 * Basic COW test, but collapse after COW-sharing the lower half of a
1479 * Basic COW test, but collapse after COW-sharing the upper half of a
/linux/mm/
H A Dkhugepaged.c88 * default collapse hugepages if there is at least one pte mapped like
92 * Note that these are only respected if collapse was initiated by khugepaged.
249 * max_ptes_none controls if khugepaged should collapse hugepages over
360 * the shared zeropage for the given collapse operation.
361 * @cc: The collapse control struct
365 * Return: Maximum number of empty/shared zeropage PTEs for the collapse operation
377 /* for PMD collapse, respect the user defined maximum */ in collapse_max_ptes_none()
381 * for mTHP collapse with the sysctl value set to KHUGEPAGED_MAX_PTES_LIMIT, in collapse_max_ptes_none()
382 * scale the maximum number of PTEs to the order of the collapse. in collapse_max_ptes_none()
387 * For mTHP collapse of values other than 0 or KHUGEPAGED_MAX_PTES_LIMIT, in collapse_max_ptes_none()
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/linux/Documentation/admin-guide/mm/
H A Dtranshuge.rst213 All THPs at fault and collapse time will be added to _deferred_list,
269 khugepaged currently only searches for opportunities to collapse file/shmem
270 to PMD-sized THP. Only anonymous memory will attempt to collapse to other THP
305 Per-order mTHP collapse statistics are also available under
319 For PMD-sized THP collapse, this directly limits the number of empty pages
322 For mTHP collapse, only 0 or (HPAGE_PMD_NR - 1) are supported. At
323 HPAGE_PMD_NR - 1, we collapse to the highest possible order. Any intermediate
324 value will emit a warning and mTHP collapse will default to max_ptes_none=0.
342 that THP is shared. Exceeding the number would block the collapse::
349 For mTHP collapse, khugepaged does not support collapsing regions that
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/linux/tools/testing/selftests/rcutorture/bin/
H A Dkcsan-collapse.sh4 # If this was a KCSAN run, collapse the reports in the various console.log
7 # Usage: kcsan-collapse.sh resultsdir
H A Dkvm-end-run-stats.sh34 kcsan-collapse.sh "$rundir" | tee -a "$rundir/log"
/linux/include/uapi/linux/
H A Dfalloc.h26 * Attempting to collapse a range that crosses the end of the file is
28 * to collapse a range that crosses EOF.
76 * to say that it cannot be used with the punch, zero, collapse, or
/linux/lib/
H A Dassoc_array.c1042 * Subtree collapse to node iterator.
1047 struct assoc_array_delete_collapse_context *collapse = iterator_data; in assoc_array_delete_collapse_iterator() local
1049 if (leaf == collapse->skip_leaf) in assoc_array_delete_collapse_iterator()
1052 BUG_ON(collapse->slot >= ASSOC_ARRAY_FAN_OUT); in assoc_array_delete_collapse_iterator()
1054 collapse->node->slots[collapse->slot++] = assoc_array_leaf_to_ptr(leaf); in assoc_array_delete_collapse_iterator()
1081 struct assoc_array_delete_collapse_context collapse; in assoc_array_delete() local
1150 * leaves in it, then attempt to collapse it - and attempt to in assoc_array_delete()
1151 * recursively collapse up the tree. in assoc_array_delete()
1153 * We could also try and collapse in partially filled subtrees to take in assoc_array_delete()
1176 /* Look further up the tree to see if we can collapse this node in assoc_array_delete()
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/linux/drivers/clk/qcom/
H A Dgdsc.h22 * @collapse_ctrl: APCS collapse-vote register
23 * @collapse_mask: APCS collapse-vote mask
/linux/tools/testing/selftests/net/
H A Dnat6to4.bpf.c115 sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse u32 into range 1 .. 0x1FFFE in sched_cls_ingress6_nat_6_prog()
116 sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse any potential carry into u16 in sched_cls_ingress6_nat_6_prog()
189 sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse u32 into range 1 .. 0x1FFFE in sched_cls_egress4_snat4_prog()
190 sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse any potential carry into u16 in sched_cls_egress4_snat4_prog()
/linux/tools/perf/python/
H A Dilist.py210 Binding(key="c", action="collapse", description="Collapse",
211 tooltip="Collapse the current PMU"),
334 """Collapse the part of the tree currently on."""
/linux/drivers/net/ipa/
H A Dipa_power.h28 * ipa_power_retention() - Control register retention on power collapse
/linux/Documentation/devicetree/bindings/soc/qcom/
H A Dqcom,rpm-master-stats.yaml17 and total system-wide power collapse) are first made at Master-level, and
/linux/Documentation/sphinx-static/
H A Dtheme_overrides.css69 * - Sequences of whitespace should collapse into a single whitespace.
/linux/Documentation/devicetree/bindings/pinctrl/
H A Drenesas,rzn1-pinctrl.yaml69 These identifiers collapse the IO Multiplex Configuration Level 1
/linux/tools/include/uapi/asm-generic/
H A Dmman-common.h80 #define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */
/linux/drivers/media/platform/qcom/venus/
H A Dhfi_venus.c965 dev_warn(dev, "setting hw power collapse ON failed (%d)\n", in venus_sys_set_default_properties()
1506 dev_err(dev, "prepare for power collapse fail (%d)\n", ret); in venus_suspend_1xx()
1608 * Power collapse sequence for Venus 3xx and 4xx versions: in venus_suspend_3xx()
1612 * 2. Send a command to prepare for power collapse. in venus_suspend_3xx()
1624 dev_err(dev, "prepare for power collapse fail (%d)\n", ret); in venus_suspend_3xx()
/linux/tools/perf/ui/
H A Dhist.c702 .collapse = hpp__nop_cmp, \
716 .collapse = hpp__nop_cmp, \
729 .collapse = hpp__nop_cmp, \
743 .collapse = hpp__nop_cmp, \
/linux/drivers/soc/qcom/
H A Drpmh-internal.h103 * @cpus_in_pm: Number of CPUs not in idle power collapse.
/linux/drivers/media/platform/verisilicon/
H A Dhantro_h1_jpeg_enc.c93 * DO NOT collapse the below two "for" loops into one. in hantro_h1_jpeg_enc_set_qtable()
H A Drockchip_vpu2_hw_jpeg_enc.c119 * DO NOT collapse the below two "for" loops into one. in rockchip_vpu2_jpeg_enc_set_qtable()
/linux/Documentation/admin-guide/cifs/
H A Dtodo.rst24 perhaps addition of new optional SMB3.1.1 fsctls to make collapse range
/linux/tools/perf/ui/browsers/
H A Dannotate-data.c541 "e Expand/Collapse current entry\n" in annotated_data_browser__run()
542 "E Expand/Collapse all children of the current\n" in annotated_data_browser__run()
/linux/arch/x86/kernel/apic/
H A Dx2apic_cluster.c56 /* Collapse cpus in a cluster so a single IPI per cluster is sent */ in __x2apic_send_IPI_mask()
/linux/Documentation/userspace-api/media/v4l/
H A Dstandard.rst36 Composite input may collapse standards, enumerating "PAL-B/G/H/I",

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