Lines Matching +full:processor +full:- +full:intensive
1 # SPDX-License-Identifier: GPL-2.0-only
19 parameter printk.time=1. See Documentation/admin-guide/kernel-parameters.rst
26 in task context) or a caller "processor id" (if not in task context)
50 int "Default console loglevel (1-15)"
60 Note: This does not affect the log level of un-prefixed printk()
65 int "quiet console loglevel (1-15)"
76 int "Default message log level (1-7)"
82 This was hard-coded to KERN_WARNING since at least 2.6.10 but folks
118 enabled/disabled based on various levels of scope - per source file,
158 nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
162 nullarbor:~ # echo -n 'file svcsock.c +p' >
166 nullarbor:~ # echo -n 'module nfsd +p' >
170 nullarbor:~ # echo -n 'func svc_process +p' >
174 nullarbor:~ # echo -n 'func svc_process -p' >
177 See Documentation/admin-guide/dynamic-debug-howto.rst for additional
207 debugging but costs about 70-100K of memory.
225 menu "Compile-time checks and compiler options"
237 def_bool $(as-instr,.uleb128 .Lexpr_end4 - .Lexpr_start3\n.Lexpr_start3:\n.Lexpr_end4:)
245 This adds debug symbols to the kernel and modules (gcc -g), and
288 5.0+ accepts the -gdwarf-5 flag but only had partial support for some
292 15-18% savings in resulting image and debug info section sizes as
317 depends on $(cc-option,-gz=zlib)
318 depends on $(ld-option,--compress-debug-sections=zlib)
323 Users of dpkg-deb via scripts/package/builddeb may find an increase in
332 depends on $(cc-option,-gsplit-dwarf)
374 bool "Allow loading modules with non-matching BTF type info"
390 instance. See Documentation/dev-tools/gdb-kernel-debugging.rst
411 bool "Strip assembler-generated symbols during link"
414 Strip internal assembler-generated symbols during a link (symbols
432 This option will install uapi headers (headers exported to user-space)
435 user-space program samples. It is also needed by some features such
453 - Add the option -fno-inline-functions-called-once to gcc commands.
454 When inlining a function annotated with __init in a non-init
461 bool "Make section mismatch errors non-fatal"
502 bool "Compile-time stack metadata validation"
507 Validate frame pointer rules at compile-time. This helps ensure that
523 Selecting this option will pass "-Map=vmlinux.map" to ld
530 bool "Force weak per-cpu definitions"
559 keys are documented in <file:Documentation/admin-guide/sysrq.rst>.
569 to a bitmask as described in Documentation/admin-guide/sysrq.rst.
610 debugfs=[on,no-mount,off]. The restrictions apply for API access
629 Access is off. Clients get -PERM when trying to create nodes in
631 Client can then back-off or continue without debugfs access.
671 properly. This can make kmalloc/kfree-intensive workloads
705 int "debug_objects bootup default value (0-1)"
737 allocations. See Documentation/dev-tools/kmemleak.rst for more
779 Depending on the cpu, kmemleak scan may be cpu intensive and can
794 task has ever had available in the sysrq-T and sysrq-P debug output.
823 Enable this to turn on extended checks in the virtual-memory system
838 bool "Debug VM red-black trees"
841 Enable VM red-black tree debugging information and extra validations.
846 bool "Debug page-flags operations"
896 on the mminit_loglevel= command-line option.
906 debugfs interface under /sys/kernel/debug/notifier-error-inject/memory
911 Example: Inject memory hotplug offline error (-12 == -ENOMEM)
913 # cd /sys/kernel/debug/notifier-error-inject/memory
914 # echo -12 > actions/MEM_GOING_OFFLINE/error
919 be called memory-notifier-error-inject.
951 mechanism for non-highmem pages and on non-highmem systems.
975 These kinds of bugs usually occur when call-chains in the
1057 high-availability systems that have uptime guarantees and
1124 to determine when a task has become non-responsive and should
1145 high-availability systems that have uptime guarantees and
1170 Also it could generate series of lockups with cooling-down periods.
1226 if kernel code uses it in a preemption-unsafe way. Also, the kernel
1263 participant CPUs, tasks and irq-contexts would be needed
1276 and rwsems - in which case all dependencies between these
1281 For more details, see Documentation/locking/lockdep-design.rst.
1284 bool "Enable raw_spinlock - spinlock nesting checks"
1330 bool "Spinlock and rw-lock debugging: basic checks"
1355 injecting additional -EDEADLK wound/backoff cases. Together with
1381 memory-freeing routines (kfree(), kmem_cache_free(), free_pages(),
1434 … Try increasing this value if you hit "lockdep bfs error:-1" warning due to __cq_enqueue() failure.
1457 bool "Locking API boot-time self-tests"
1460 Say Y here if you want the kernel to run a short self-test during
1461 bootup. The self-test checks whether common types of locking bugs
1476 Say Y here if you want kernel locking-primitive torture tests
1606 Enable this to turn on extended checks in the linked-list
1615 Enable this to turn on extended checks in the priority-ordered
1616 linked-list (plist) walking routines. This checks the entire
1625 Enable this to turn on checks on scatter-gather tables. This can
1679 bool "Force round-robin CPU selection for unbound work items"
1688 round-robin CPU selection to flush out usages which depend on the
1747 in charge of the OHCI-1394 controllers should be used instead.
1749 See Documentation/core-api/debugging-via-ohci1394.rst for more information.
1781 io-memory regardless of whether a driver is actively using that
1786 userspace access to *idle* io-memory ranges (see /proc/iomem) This
1820 interface /sys/kernel/debug/notifier-error-inject/pm
1825 Example: Inject PM suspend error (-12 = -ENOMEM)
1827 # cd /sys/kernel/debug/notifier-error-inject/pm/
1828 # echo -12 > actions/PM_SUSPEND_PREPARE/error
1833 be called pm-notifier-error-inject.
1844 /sys/kernel/debug/notifier-error-inject/OF-reconfig/
1850 be called of-reconfig-notifier-error-inject.
1860 interface /sys/kernel/debug/notifier-error-inject/netdev
1865 Example: Inject netdevice mtu change error (-22 = -EINVAL)
1867 # cd /sys/kernel/debug/notifier-error-inject/netdev
1868 # echo -22 > actions/NETDEV_CHANGEMTU/error
1873 be called netdev-notifier-error-inject.
1878 bool "Fault-injections of functions"
1888 bool "Fault-injection framework"
1891 Provide fault-injection framework.
1892 For more details, see Documentation/fault-injection/.
1895 bool "Fault-injection capability for kmalloc"
1899 Provide fault-injection capability for kmalloc.
1902 bool "Fault-injection capability for alloc_pages()"
1905 Provide fault-injection capability for alloc_pages().
1911 Provides fault-injection capability to inject failures
1915 bool "Fault-injection capability for disk IO"
1918 Provide fault-injection capability for disk IO.
1921 bool "Fault-injection capability for faking disk interrupts"
1924 Provide fault-injection capability on end IO handling. This
1932 bool "Fault-injection capability for futexes"
1936 Provide fault-injection capability for futexes.
1939 bool "Debugfs entries for fault-injection capabilities"
1942 Enable configuration of fault-injection capabilities via debugfs.
1945 bool "Fault-injection capability for functions"
1948 Provide function-based fault-injection capability.
1955 bool "Fault-injection capability for MMC IO"
1958 Provide fault-injection capability for MMC IO.
1965 bool "Fault-injection capability for SunRPC"
1968 Provide fault-injection capability for SunRPC and
1972 bool "stacktrace filter for fault-injection capabilities"
1978 Provide stacktrace filter for fault-injection capabilities
1988 def_bool $(cc-option,-fsanitize-coverage=trace-pc)
2002 for coverage-guided fuzzing (randomized testing).
2008 For more details, see Documentation/dev-tools/kcov.rst.
2013 depends on $(cc-option,-fsanitize-coverage=trace-cmp)
2036 KCOV uses preallocated per-cpu areas to collect coverage from
2057 Documentation/fault-injection/provoke-crashes.rst
2067 to the KUnit documentation in Documentation/dev-tools/kunit/.
2093 tristate "Array-based sort test" if !KUNIT_ALL_TESTS
2097 This option enables the self-test function of 'sort()' at boot,
2163 tristate "Red-Black tree test"
2170 tristate "Reed-Solomon library test"
2176 This option enables the self-test function of rslib at boot,
2192 Enable this option to build test module which validates per-cpu
2198 tristate "Perform an atomic64_t self-test"
2210 This is a one-shot self test that permutes through the
2212 N-disk array. Recovery is performed with the asynchronous
2269 This is intended to help people writing architecture-specific
2312 no compiler warnings from C=1 sparse checker or -Wextra
2380 actual firmware-using device. The contents can be rechecked by
2408 to the KUnit documentation in Documentation/dev-tools/kunit/.
2426 to the KUnit documentation in Documentation/dev-tools/kunit/.
2428 This is intended to help people writing architecture-specific
2439 to the KUnit documentation in Documentation/dev-tools/kunit/.
2451 to the KUnit documentation in Documentation/dev-tools/kunit/.
2456 tristate "KUnit Test for Kernel Linked-list structures" if !KUNIT_ALL_TESTS
2470 to the KUnit documentation in Documentation/dev-tools/kunit/.
2482 to the KUnit documentation in Documentation/dev-tools/kunit/.
2494 to the KUnit documentation in Documentation/dev-tools/kunit/.
2506 to the KUnit documentation in Documentation/dev-tools/kunit/.
2518 to the KUnit documentation in Documentation/dev-tools/kunit/.
2529 to the KUnit documentation in Documentation/dev-tools/kunit/.
2540 to the KUnit documentation in Documentation/dev-tools/kunit/.
2552 to the KUnit documentation in Documentation/dev-tools/kunit/.
2565 to the KUnit documentation in Documentation/dev-tools/kunit/.
2574 Test if the kernel is zero-initializing stack variables and
2648 tools/testing/selftests/kmod/kmod.sh --help
2657 virt_to_phys() done against the non-linear part of the
2682 make -C tools/testing/selftests TARGETS=livepatch run_tests
2686 tools/testing/selftests/livepatch/test-callbacks.sh
2687 tools/testing/selftests/livepatch/test-livepatch.sh
2688 tools/testing/selftests/livepatch/test-shadow-vars.sh
2703 Test if the kernel is zero-initializing heap and page allocations.
2717 Doing so will allow you to run tools/testing/selftest/vm/hmm-tests.
2736 for self-testing floating point control register setting in
2767 memtest=0, mean disabled; -- default
2776 bool "Microsoft Hyper-V driver testing"
2780 Select this option to enable Hyper-V vmbus testing.
2790 Enables rustc's `-Cdebug-assertions` codegen option.
2806 Enables rustc's `-Coverflow-checks` codegen option.
2809 overflow. When overflow-checks are enabled, a Rust panic will occur