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/kernel/power/
DKconfig7 Allow the system to enter sleep states in which main memory is
20 Turning OFF this setting is NOT recommended! If in doubt, say Y.
47 called "hibernation" in user interfaces. STD checkpoints the
52 in your bootloader's configuration file.
63 It creates an image which is saved in your active swap. Upon the next
74 Right now you may boot without resuming and resume later but in the
75 meantime you cannot use the swap partition(s)/file(s) involved in
76 suspending. Also in this case you must not use the filesystems
79 will get corrupted in a nasty way.
93 If in doubt, say Y.
[all …]
/kernel/
Dkexec.c259 struct compat_kexec_segment in; in COMPAT_SYSCALL_DEFINE4() local
279 result = copy_from_user(&in, &segments[i], sizeof(in)); in COMPAT_SYSCALL_DEFINE4()
283 ksegments[i].buf = compat_ptr(in.buf); in COMPAT_SYSCALL_DEFINE4()
284 ksegments[i].bufsz = in.bufsz; in COMPAT_SYSCALL_DEFINE4()
285 ksegments[i].mem = in.mem; in COMPAT_SYSCALL_DEFINE4()
286 ksegments[i].memsz = in.memsz; in COMPAT_SYSCALL_DEFINE4()
DKconfig.preempt45 is in kernel mode executing a system call. This allows
57 all kernel code (that is not executing in a critical section)
60 even if it is in kernel mode executing a system call and would
67 embedded system with latency requirements in the milliseconds
Drelay.c1108 static ssize_t subbuf_splice_actor(struct file *in, in subbuf_splice_actor() argument
1116 struct rchan_buf *rbuf = in->private_data; in subbuf_splice_actor()
1200 static ssize_t relay_file_splice_read(struct file *in, in relay_file_splice_read() argument
1214 ret = subbuf_splice_actor(in, ppos, pipe, len, flags, &nonpad_ret); in relay_file_splice_read()
DKconfig.hz15 Note that the timer interrupt occurs on each processor in an SMP
/kernel/trace/
DKconfig50 by default, even without setting the REGS flag in the ftrace_ops.
58 but does not want them included in the ftrace locations.
203 small and not measurable even in micro-benchmarks (at least on
235 See the files in /sys/kernel/debug/tracing:
279 in debugfs called function_profile_enabled which defaults to zero.
281 zero is entered, profiling stops. A "functions" file is created in
285 If in doubt, say N.
295 kernel and displays it in /sys/kernel/debug/tracing/stack_trace.
303 To enable the stack tracer on bootup, pass in 'stacktrace'
328 This option measures the time spent in irqs-off critical
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/kernel/time/
DKconfig33 # Architecture can handle broadcast in a driver-agnostic way
135 the task mostly runs in userspace and has few kernel activity.
139 the expense of some overhead in user <-> kernel transitions:
165 other dependencies to provide in order to make the full
176 CPUs in the system.
182 don't want in production.
200 int "Clocksource watchdog maximum allowable skew (in μs)"
205 Specify the maximum amount of allowable watchdog skew in
Dtimeconst.bc31 a shift value will be correct in the signed integer range and off
32 by at most one in the upper half of the unsigned range. */
/kernel/rcu/
DKconfig.debug75 int "RCU CPU stall timeout in seconds"
86 int "Expedited RCU CPU stall timeout in milliseconds"
114 This option provides consistency checks in RCU's handling of
115 NO_HZ. These checks have proven quite helpful in detecting
116 bugs in arch-specific NO_HZ code.
131 machines, as in systems with more than about 10 or 20 CPUs.
132 But in conjunction with tools like KASAN, it can be helpful
DKconfig91 manual selection in most cases.
108 so use with caution. Not for manual selection in most cases.
123 these readers to appear in the idle loop as well as on the
126 selection in most cases.
180 value to the maximum value possible in order to reduce the
226 bool "Perform RCU expedited work in a real-time kthread"
247 callback invocation to energy-efficient CPUs in battery-powered
250 workloads will incur significant increases in context-switch
273 by default, in the absence of the rcu_nocbs or nohz_full boot
297 bool "Tasks Trace RCU readers use memory barriers in user and idle"
[all …]
/kernel/bpf/preload/
DKconfig11 # in allmodconfig or allyesconfig configurations
17 useful in debugging and introspection of BPF programs and maps.
25 introspection in bpffs.
/kernel/dma/
DKconfig18 # flag in struct device where applicable
99 # in the pagetables
147 int "Size in Mega Bytes"
152 Defines the size (in MiB) of the default memory area for Contiguous
164 Allocator as a percentage of the total memory in the system.
211 With this option you will be able to detect common bugs in device
229 This is particularly likely to have been overlooked in cases where the
/kernel/module/
DKconfig7 be inserted in the running kernel, rather than being
206 External modules will also be compressed in the same way during the
221 If in doubt, select 'None'.
250 bool "Support in-kernel module decompression"
265 Symbols exported with EXPORT_SYMBOL_NS*() are considered exported in
293 on the set of modules being selected in your kernel configuration,
304 string "Whitelist of symbols to keep in ksymtab"
311 exported at all times, even in absence of in-tree users. The value to
Ddecompress.c170 xz_buf.in = buf; in module_xz_decompress()
/kernel/irq/
DKconfig124 out the interrupt descriptors in a more NUMA-friendly way. )
129 bool "Expose irq internals in debugfs"
/kernel/bpf/preload/iterators/
DREADME2 If you change "iterators.bpf.c" do "make -j" in this directory to rebuild "iterators.skel.h".
/kernel/livepatch/
DKconfig20 to new function code contained in the patch module.
/kernel/kcsan/
D.kunitconfig22 # (or alter) this, in conjunction with setting a different test timeout with,
/kernel/debug/kdb/
Dkdb_cmds2 # These commands are executed in kdb_init() context, no SMP, no
/kernel/gcov/
DKconfig24 For all files in one directory:
/kernel/trace/rv/
DKconfig34 Enable wip (wakeup in preemptive) sample monitor that illustrates