| /openbmc/linux/kernel/cgroup/ |
| H A D | freezer.c | 12 * Propagate the cgroup frozen state upwards by the cgroup tree.
14 static void cgroup_propagate_frozen(struct cgroup *cgrp, bool frozen) in cgroup_propagate_frozen() argument
19 * If the new state is frozen, some freezing ancestor cgroups may change in cgroup_propagate_frozen()
20 * their state too, depending on if all their descendants are frozen. in cgroup_propagate_frozen()
22 * Otherwise, all ancestor cgroups are forced into the non-frozen state. in cgroup_propagate_frozen()
25 if (frozen) { in cgroup_propagate_frozen()
49 * Revisit the cgroup frozen state.
50 * Checks if the cgroup is really frozen and perform all state transitions.
54 bool frozen; in cgroup_update_frozen() local
59 * If the cgroup has to be frozen (CGRP_FREEZE bit set), in cgroup_update_frozen()
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| H A D | legacy_freezer.c | 29 * set if "FROZEN" is written to freezer.state cgroupfs file, and cleared
38 CGROUP_FROZEN = (1 << 3), /* this and its descendants frozen */
72 /* Check if the cgroup is still FREEZING, but not FROZEN. The extra in cgroup_freezing()
73 * !FROZEN check is required, because the FREEZING bit is not cleared in cgroup_freezing()
74 * when the state FROZEN is reached. in cgroup_freezing()
86 return "FROZEN"; in freezer_state_strs()
178 * For simplicity, when migrating any task to a FROZEN cgroup, we in freezer_attach()
183 * current state before executing the following - !frozen tasks may in freezer_attach()
184 * be visible in a FROZEN cgroup and frozen tasks in a THAWED one. in freezer_attach()
194 /* clear FROZEN and propagate upwards */ in freezer_attach()
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| /openbmc/linux/Documentation/admin-guide/cgroup-v1/ |
| H A D | freezer-subsystem.rst | 53 being frozen. This allows the bash example above and gdb to run as
67 "FREEZING" or "FROZEN". This is the combined self and parent-states.
68 If any is freezing, the cgroup is freezing (FREEZING or FROZEN).
70 FREEZING cgroup transitions into FROZEN state when all tasks
71 belonging to the cgroup and its descendants become frozen. Note that
72 a cgroup reverts to FREEZING from FROZEN after a new task is added
74 frozen.
77 allowed - "FROZEN" and "THAWED". If FROZEN is written, the cgroup,
90 This value is 1 iff the last write to freezer.state was "FROZEN".
95 frozen; otherwise, 1.
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| /openbmc/linux/tools/testing/selftests/cgroup/ |
| H A D | test_freezer.c | 25 * Check if the cgroup is frozen by looking at the cgroup.events::frozen value.
27 static int cg_check_frozen(const char *cgroup, bool frozen) in cg_check_frozen() argument
29 if (frozen) { in cg_check_frozen()
30 if (cg_read_strstr(cgroup, "cgroup.events", "frozen 1") != 0) { in cg_check_frozen()
31 debug("Cgroup %s isn't frozen\n", cgroup); in cg_check_frozen()
36 * Check the cgroup.events::frozen value. in cg_check_frozen()
38 if (cg_read_strstr(cgroup, "cgroup.events", "frozen 0") != 0) { in cg_check_frozen()
39 debug("Cgroup %s is frozen\n", cgroup); in cg_check_frozen()
56 * Attach a task to the given cgroup and wait for a cgroup frozen event.
60 bool frozen) in cg_enter_and_wait_for_frozen() argument
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| /openbmc/linux/kernel/ |
| H A D | freezer.c | 26 /* protects freezing and frozen transitions */
30 * freezing_slow_path - slow path for testing whether a task needs to be frozen
34 * and tests whether @p needs to enter and stay in frozen state. Can be
56 bool frozen(struct task_struct *p) in frozen() function
61 /* Refrigerator is place where frozen processes are stored :-). */
151 * %false, if @p is not freezing or already frozen; %true, otherwise
158 if (!freezing(p) || frozen(p) || __freeze_task(p)) { in freeze_task()
226 * freezer notices that we aren't frozen yet or the freezing in set_freezable()
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| /openbmc/linux/kernel/power/ |
| H A D | user.c | 35 bool frozen; member
96 data->frozen = false; in snapshot_open()
118 if (data->frozen) { in snapshot_release()
278 if (data->frozen) in snapshot_ioctl()
291 data->frozen = true; in snapshot_ioctl()
296 if (!data->frozen || data->ready) in snapshot_ioctl()
302 data->frozen = false; in snapshot_ioctl()
306 if (data->mode != O_RDONLY || !data->frozen || data->ready) { in snapshot_ioctl()
321 if (data->mode != O_WRONLY || !data->frozen || in snapshot_ioctl()
387 if (!data->frozen) { in snapshot_ioctl()
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| H A D | process.c | 101 if (p != current && freezing(p) && !frozen(p)) in try_to_freeze_tasks()
116 * The current thread will not be frozen. The same process that calls
129 /* Make sure this task doesn't get frozen */ in freeze_processes()
144 * Now that the whole userspace is frozen we need to disable in freeze_processes()
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| /openbmc/linux/Documentation/power/ |
| H A D | freezing-of-tasks.rst | 34 'frozen' and therefore the set of functions handling this mechanism is referred
37 frozen before kernel threads.
41 if the task is to be frozen and makes the task enter __refrigerator().
47 that combine interruptible sleep with checking if the task is to be frozen and
69 order to clear the PF_FROZEN flag for each frozen task. Then, the tasks that
70 have been frozen leave __refrigerator() and continue running.
156 be frozen before the driver's .suspend() callback is executed and it will be
168 if this process is not frozen, it may notice that the number of CPUs has
179 and B is frozen in the meantime, then A will be blocked until B is thawed, which
200 fail, because the user land process that should respond to the request is frozen
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| H A D | userland-swsusp.rst | 38 not frozen); this is required for SNAPSHOT_CREATE_IMAGE
42 thaw user space processes frozen by SNAPSHOT_FREEZE
133 unfreeze user space processes frozen by SNAPSHOT_UNFREEZE if they are
134 still frozen when the device is being closed).
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| /openbmc/qemu/qga/vss-win32/ |
| H A D | requester.cpp | 21 /* Max wait time for frozen event (VSS can only hold writes for 10 seconds) */
24 /* Call QueryStatus every 10 ms while waiting for frozen event */
48 /* Variables used while applications and filesystes are frozen by VSS */
55 int cFrozenVols; /* number of frozen volumes */
316 if (vss_ctx.pVssbc) { /* already frozen */ in requester_freeze()
318 qga_debug("finished, already frozen"); in requester_freeze()
498 * after the applications and filesystems are frozen. in requester_freeze()
516 "DoSnapshotSet exited without Frozen event"); in requester_freeze()
528 "timeout when try to receive Frozen event from VSS provider"); in requester_freeze()
537 "couldn't receive Frozen event from VSS provider"); in requester_freeze()
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| /openbmc/linux/fs/xfs/scrub/ |
| H A D | fscounters.c | 59 bool frozen; member
183 fsc->frozen = true; in xchk_fscounters_freeze()
196 if (!fsc->frozen) in xchk_fscounters_cleanup()
201 xfs_emerg(sc->mp, "still frozen after scrub, err=%d", error); in xchk_fscounters_cleanup()
203 fsc->frozen = false; in xchk_fscounters_cleanup()
518 * If the filesystem is not frozen, the counter summation calls above in xchk_fscounters()
527 if (!fsc->frozen) in xchk_fscounters()
567 * frozen, we treat the discrepancy as a corruption because the freeze in xchk_fscounters()
573 if (fsc->frozen) in xchk_fscounters()
580 if (fsc->frozen) in xchk_fscounters()
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| /openbmc/linux/fs/ |
| H A D | super.c | 1100 if (sb->s_writers.frozen != SB_UNFROZEN) in reconfigure_super()
1124 if (sb->s_writers.frozen != SB_UNFROZEN) in reconfigure_super()
1240 * emergency_thaw_all -- forcibly thaw every frozen filesystem
1519 * It is enough to check bdev was not frozen before we set s_bdev. in setup_bdev_super()
1525 warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev); in setup_bdev_super()
1897 unsigned short old = sb->s_writers.frozen; in wait_for_partially_frozen()
1900 ret = wait_var_event_killable(&sb->s_writers.frozen, in wait_for_partially_frozen()
1901 sb->s_writers.frozen != old); in wait_for_partially_frozen()
1904 sb->s_writers.frozen != SB_UNFROZEN && in wait_for_partially_frozen()
1905 sb->s_writers.frozen != SB_FREEZE_COMPLETE); in wait_for_partially_frozen()
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| /openbmc/linux/include/trace/events/ |
| H A D | mptcp.h | 83 __field(u8, frozen)
102 __entry->frozen = mpext->frozen;
109 …u csum=%x use_map=%u dsn64=%u data_fin=%u use_ack=%u ack64=%u mpc_map=%u frozen=%u reset_transient…
115 __entry->mpc_map, __entry->frozen,
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| /openbmc/linux/include/linux/ |
| H A D | freezer.h | 25 * Check if a process has been frozen
27 extern bool frozen(struct task_struct *p);
74 static inline bool frozen(struct task_struct *p) { return false; } in frozen() function
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| H A D | journal-head.h | 56 * Copy of the buffer data frozen for writing to the log.
110 /* Trigger type for the committing transaction's frozen data */
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| /openbmc/linux/arch/powerpc/platforms/powernv/ |
| H A D | eeh-powernv.c | 156 * to clear frozen PE during PCI config access. in pnv_eeh_enable_phbs()
395 * the PE becomes frozen for the first time and the flag has in pnv_eeh_probe()
547 * Check PHB state. If the PHB is frozen for the in pnv_eeh_get_phb_state()
575 * We don't clobber hardware frozen state until PE in pnv_eeh_get_pe_state()
647 * If the PE is switching to frozen state for the in pnv_eeh_get_pe_state()
1048 * frozen state during PE reset. However, the good idea here from in pnv_eeh_reset()
1049 * benh is to keep frozen state before we get PE reset done completely in pnv_eeh_reset()
1050 * (until BAR restore). With the frozen state, HW drops illegal IO in pnv_eeh_reset()
1051 * or MMIO access, which can incur recursive frozen PE during PE in pnv_eeh_reset()
1052 * reset. The side effect is that EEH core has to clear the frozen in pnv_eeh_reset()
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| /openbmc/linux/Documentation/driver-api/pm/ |
| H A D | notifiers.rst | 22 processes are frozen at these points). The solution may be to load the firmware
23 into memory before processes are frozen and upload it from there in the
30 The system is going to hibernate, tasks will be frozen immediately. This
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| /openbmc/u-boot/arch/arm/mach-socfpga/ |
| H A D | freeze_controller.c | 18 * flag is set to TRUE to indicate the IO banks are frozen
60 /* Set global flag to indicate channel is frozen */ in sys_mgr_frzctrl_freeze_req()
101 /* Set global flag to indicate channel is frozen */ in sys_mgr_frzctrl_freeze_req()
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| /openbmc/bmcweb/redfish-core/include/generated/enums/ |
| H A D | memory.hpp | 87 Frozen, enumerator
190 {SecurityStates::Frozen, "Frozen"},
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| /openbmc/qemu/qga/ |
| H A D | main.c | 110 bool frozen; member
131 /* commands that are safe to issue while filesystems are frozen */
164 /* if we're frozen, don't exit unless we're absolutely forced to, in quit_handler()
457 * If frozen, this filtering must take priority over in ga_command_is_allowed()
460 if (state->frozen) { in ga_command_is_allowed()
523 return s->frozen; in ga_is_frozen()
532 s->frozen = true; in ga_set_frozen()
548 * in a frozen state at start up, do it now in ga_unset_frozen()
570 s->frozen = false; in ga_unset_frozen()
926 const gchar *path, gboolean frozen) in read_persistent_state() argument
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| /openbmc/linux/Documentation/admin-guide/pm/ |
| H A D | suspend-flows.rst | 58 Tasks are frozen primarily in order to avoid unchecked hardware accesses
68 The kernel threads that choose to be frozen during system suspend for
69 specific reasons are frozen subsequently, but they are not intercepted.
71 to be frozen and to put themselves into uninterruptible sleep if so. [Note,
152 Tasks frozen in step 2 of the preceding `suspend <s2idle_suspend_>`_
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| /openbmc/linux/arch/powerpc/kernel/ |
| H A D | eeh_driver.c | 332 eeh_edev_info(edev, "Invoking %s->error_detected(IO frozen)", in eeh_report_error()
551 * Explicitly clear PE's frozen state for PowerNV where
552 * we have frozen PE until BAR restore is completed. It's
554 * PE reset (for 3 times), we try to clear the frozen state
674 /* Clear frozen state */ in eeh_reset_device()
754 * the upstream bridge is also frozen, or the bridge is part of the same PE
823 * slot, the associated PE will be frozen. Besides, DMA's occurring
868 pr_debug("EEH: Frozen PHB#%x-PE#%x is empty!\n", in eeh_handle_normal_event()
895 pr_err("EEH: Frozen PHB#%x-PE#%x detected\n", in eeh_handle_normal_event()
936 eeh_pe_report("error_detected(IO frozen)", pe, in eeh_handle_normal_event()
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| /openbmc/linux/tools/testing/selftests/powerpc/pmu/ebb/ |
| H A D | back_to_back_ebbs_test.c | 24 * counter frozen once we've taken enough EBBs.
45 /* Reset but leave counters frozen */ in ebb_callee()
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| H A D | cycles_with_freeze_test.c | 43 trace_log_string(ebb_state.trace, "frozen"); in ebb_callee()
104 printf("EBBs while frozen %d\n", ebbs_while_frozen); in cycles_with_freeze()
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| /openbmc/linux/Documentation/riscv/ |
| H A D | patch-acceptance.rst | 42 specifications from the RISC-V foundation this means "Frozen" or
54 - Have been officially frozen or ratified by the RISC-V Foundation, or
|