New Stressors

mmaptorture - memory mapping torture stressor

New Options

--intmath-fast - use fast integer types for intmath stressor
--pci-ops-rate - throttle PCI stressor bogo-ops rate

Changelog:

core-helper: add check for Cygwin
stress-zombie: repeat zombie state checks for more robust checking
stress-af-alg: ignore errno = 0 send* failures
stress-mcontend: ensure mcontend_numa is defaulted to false
stress-pci: make t_delta non-clobberable
stress-mmaptorture: cat mmap returns to uint8_t *
stress-zombie: add sched_yield before zombie Z state check
stress-mmaptorture: voidify function argument mmaptorture_msync
stress-vm: add HAVE_LINUX_MEMPOLICY_H check when using numa.mask
stress-tun: perform addition before casting to uint8_t
core-thrash: make begin/end unsigned to match %x sscanf format specifier
stress-munmap: make major and minor unsigned ints to match scanf %x specifiers
core-numa: avoid pointer arithmetic on potentially NULL buffer
core-numa: don't dereference numa_mask before it's null checked
core-parse-opts: ensure format specifier and type match
stress-mmaptorture: only declare variable mypid when required
stress-zlib: call deflateEnd on error return path
stress-tsearch: avoid division by zero
stress-access: fix array termination comparison
workload: avoid division by zero when sum is 0.0
stress-vm: free context.numa_mask on error return path
stress-mmaptorture: voidify return from stress_get_setting
stress-intmath: load init values for fast ints from a fast int array
test-intmath: add a --intmath-fast option to exercise int_fast*_t types
README.md: add a couple more references to papers
core-memrate: add --memrate-method to specify read/write method
stress-memrate: allow zero values of memrate-rd-mbs and memrate-wr-mbs
stress-sysbadaddr: use shim_madvise for madvise calls
stress-tlb-shootdown: use shim_madvise for madvise calls
stress-pagemove: fix mprotect calls
core-shim: add shim macros for madvise advice
stress-mmaptorture: #ifdef around madvise, fix QNX build
kernel-coverage: add html to text conversion
kernel-coverage: add --branch-coverage coverage option
stress-*: handle ENOSUP errors on timer_create more graciously
stress-mmaptorture: populate mapping file and read mapping
stress-mmaptorture: rename temp strings name to avoid name shadowing
stress-ng.h: use 64 bit LFS
stress-mmaptorture: don't map more than mmaptoture-bytes
stress-mmaptorture: add some more torture metrics
stress-mmaptorture: use shm_open and shm_unlink for anon mappings
stress-close, stress-shm: check for SHM_OPEN and SHM_UNLINK
test: add shm-open and shm-unlink build time config checks
stress-mmaptorture: retry if mmap's fail rather than continuing
stress-mmaphuge: fix inverted MAP_FAILED check on madvise calls
stress-mmaptorture: add mlockall/munlockall in child process
stress-mmaptorture: bump MMAP_SIZE_MAP from 4 to 512 pages
stress-mmaptorture: remove debug
stress-mmaptorture: name each mmap'd page to create more VMAs
stress-mmaptorture: where possible, set vma name
core-helper: fix typo in comment: hash -> has
Manual: add mseal notes in mmaptruncate description
stress-mmaptorture: mseal a page in child process, fix munmap address
test: add check for setproctitle_init
test/test-setproctitle: remove check for setproctitle_init on BSD systems
stress-mmaptorture: increase size default to 256MB, add random ftruncate
kernel-coverage: add mmaptorture options
stress-mmaptorture: add --mmaptorture-msync option to change % rate of msyncs
stress-mmaptorture: add mmap stats and metrics
stress-mmaptorture: mmap onto an existing virt address with MAP_NOREPLACE
stress-mmaptorture: add MAP_FIXED re-map on just unmapped page
stress-mmaptorture: make variables nonclobberable due to longjmp
Dockerfile: make static stress-ng image, disable GPU stressor
github workflows: enable more arches now we have a Debian build
stress-mmaptorture: madvise don't need before unmapping pages in child
stress-mmaptorture: make pid noclobberable
github workflows: remove printenv
stress-mmaptorture: randomly fork child to dup and remove mappings
stress-mmaptorture: add random swap outs on pages
github workflows: enable more arches now we have a Debian build
Dockerfile: build images on Debian
Makefile: enable verbose build for github docker builds
README.md: add another kernel issue found with stress-ng
stress-mmaptorture: cater for systems that don't support msync (e.g. Minix)
Revert "stress-hdd: make stress_hdd_opts_t field advise build dependant"
stress-mmaptorture: cater for systems without MAP_NONBLOCK
stress-sockpair: unconstify fds arg, gcc 4.8.2 complains about this
stress-mmaptorture: reduce scope on newptr
stress-mmaptorture: move #endif
stress-mmaptorture: move } outside #ifdef block
stress-madvise: fix build issues with HAVE_MADVISE undefined
stress-mmaptorture: add --mmaptorture-bytes option
stress-mmaptorture: add remap_file_pages call where available
stress-mmaptorture: rework msync helper, msync pages randomly
core-out-of-memory: start timeout from first waitpid exit
stress-mmaptorture: add stressor that tortures mmap'd memory
Makefile: add some Intel icx compiler optimization flags
stress-pidfd: exercise PIDFD_SELF_THREAD and PIDFD_SELF_THREAD* fds
README.md: remove ] in link
README.md: add kernel issue and recent paper on stress-ng
core-config-check: check /sys/devices/system/cpu/cpufreq/boost is set to 1
core-ignite-cpu: enable cpu boost
stress-ng.h: silence PCC build warnings on cold not being supported
core-, stress-: add LIKELY/UNLIKELY hints for stress_continue_flag
core-, stress-: make various pointers and variables const
stress-shm: remove empty line
core-helper: add stress_random_small_sleep for small pthread startup delays
stress-vma: reduce scope of variable ret
stress-tee: reduce scope of variable ret
stress-prime: simplify mapping of prime methods
stress-mincore: initialize pointers with NULL instead of zero
stress-ipsec-mb: move ipsec_stats_t where it is required
stress-cache: add missing checks for HAVE_SCHED_SETAFFINITY
stress-hdd: make stress_hdd_opts_t field advise build dependant
stress-goto: simplify the goto direction mechanism
stress-funcret: compare data in struct rather than whole struct
stress-filename: simplify mapping of filename opts in method
stress-fd-race: remove redundant pointer fds
stress-fd-race: reduce scope of variables j and tmp, make them registers too
stress-exec: fix index -> method mapping on methods
stress-copy-file: cast -1 to shim_off64_t to be pedantic
core-shim: fix incorrect signed type for shim_off64_t
stress-bitops: reduce scope of buf
stress-bad-ioctl: remove need ioctl_cmd_method field, use index instead
core-thermal-zone: reduce scope of pointer name
core-affinity: constify pointers d and tmpptr, reduce scope of tmpptr
core-ignite-cpu: reduce scope of variable retry
core-perf: rename pointer l to label to make it more readable
README.md: add another research paper link
core-affinity: add checks for HAVE_SCHED_SETAFFINITY