V0.17.08

stress-ng V0.17.08 "consummate cpu crusher"

New stressors:

• fractal stressor (Naïve concurrent implementations of Mandelbrot and Julia set fractal generators)
• prime stressor (Prime search using GNU Multiple Precision Arithmetic Library for large integers)
• unlink stressor (Exercise concurrent racy unlinking of files)

New options:

• --yield-procs to specify number of child processes per stressor
• --prime-start N option to specify starting point of search
• --swap-self option to force self process pages out
• --fork-pageout option to force pages to be paged out
• --prime-progress option to periodically show prime finding progress
• --get-slow-sync option to force get stressor system calls to be called in sync

Important Fixes:

• Fix page overflow on edge cases of non-libc mergesort
• Ensure system call and test error failures are fully propagated to error status at end of stressors

Detailed Changelog:

[ruihongw]

• fix spelling of lsm_list_modules in Makefile.config

[Yiwei Lin]

• Fix unterminated cpu-stress if non 0% or 100% load

[Colin Ian King]

• Makefile: bump version
• stress-epoll: fix missing space after comma in error messages
• README.md: add another bug found by stress-ng
• stress-sigfpe: report SIGILL trap information when --verify is used
• stress-sigfpe: handle unexpected SIGILL signals
• stress-rtc: silently ignore RTC sys read EINVAL errors
• stress-rtc: don't fail on ENOENT errors
• stress-tsearch: remove double comma
• stress-rtc: fix error handling, don't fail on EINTR or EPERM
• stress-mergesort: remove MAP_32BIT
• stress-mergesort: fix out of bounds copy
• stress-unlink: use shim'd versions of fsync and fdatasync
• stress-swap: ensure opt_set_funcs and stress_set_swap_self are
  declared for all builds
• stress-io: fix build issues when HAVE_SYNCFS is not defined
• core-out-of-memory: move #define of WAIT_TIMEOUT to fix non-linux
  builds
• stress-judy: clean up variable shadowing warning
• stress*: Add compute to the --class option for high compute stressors
• stress-prime: fix spelling mistakes in comments
• stress-factal: fix spelling mistake of Mandelbrot
• stress-ng: fix --permute with checksum verification enabled
• stress-fractal: minor tweaks to reduce front end delays and improve
  core utilization
• stress*: Add search to the --class option for searching stressors
• Manual: remove duplicated comma
• stress-fault: fix fd leak on error path
• stress-fractal: add Mandelbrot and Julia set fractal stressor.
• stress-*: clean up errno handling
• core-ftrace: remove redundant initialization of pointer num
• core-klog: remove redundant initialization of pointer msg
• stress-yield: constify variable residual
• Manual: waitcpu: add more per-processor notes for waiting
  instructions
• stress-yield: add --yield-procs option, specify child processes per
  stressor
• stress-forkheavy: fix typo in comments forke -> fork
• Makefile: improve toolchain detection, fixes scan-build builds
• stress-pidfd: ensure return code in rc is returned to parent
• stress-mq: ensure child rc status is returned to parent
• stress-judy: re-work rc status so the default is EXIT_FAILURE
• stress-hsearch: ensure rc is set to EXIT_SUCCESS for success path
• stress-file-ioctl: assign rc to EXIT_NOT_IMPLEMENTED and not ret
• stress-close: remove redundant assignments to rc
• core-mwc: remove unused 32 bit mwc implementation
• Makefile.config: fix float checks, need LIB_MATH not LIB_M
• stress-prime: add --prime-start N option to specify starting point
  of search
• stress-fork: add #ifdef check around MADV_PAGEOUT
• stress-swap: add --swap-self option to force self process pages out
• stress-fork: make --fork-pageout more aggressive, do all maps
• stress-prime: remove empty line
• stress-fork: add --fork-pageout option to force pages to be paged out
• stress-prime: add hourly prime rate in --prime-progress output
• README.md: update contributors list
• stress-prime: move variables and a function to clean up build warning
• stress-enosys: fix typo: SYS_lsm_modules -> SYS_lsm_list_modules
• Manual: clarify the time between each prime progress update
• core-builtin: fix macros and shims
• Manual: add new --primes-progress option, fix prime-ops name
• core-log: don't report timestamp if localtime_r does not exist
• stress-prime: add --prime-progress option to periodically show prime
  finding progress
• stress-prime: add long integer prime computations stressor
• stress-factor: fix short description of stressor
• stress-unlink: add end of test check in link phase, add missing
  deinit state
• stress-unlink: make file syncs less frequent
• core-config-check: minor re-phrasing of scaling governors note
• stress-unlink: remove some whitespaces
• stress-unlink: use random open flags
• stress-unlink: add occasional fd sync'ing and data syncing
• Manual: correct the --vm-bytes description.
• stress-unlink: add new stressor to exercise concurrent racing unlink
  calls
• stress-dev: add a few more HID specific ioctls
• stress-dev: add linux frame buffer /dev/fb* ioctl exercising
• core-version.h: wrap macro parameters with ( )
• core-io-priority: wrap macro parameters with ( )
• core-builtin: wrap macro parameters with ( ), align macros
• Manual: replace ',' with '|' in the --prio-inv-policy option
• Manual: replace ',' with '|' in --fd-fork-file option
• core-builtin: fix brackets on shim'd helpers shim_ccosl and
  shim_csinl
• stress-get: add --get-slow-sync option to force get system calls to
  be in sync
• stress-zlib: use shim wrapped sin function
• stress-remap: remove empty line
• stress-monte-carlo: use shim'd math functions
• core-builtin: add hyperbolic sin, cos float and double shim wrappers
• stress-*: constify variables
• core-helper: remove duplicated null check on gpu_freq
• stress-*: ensure EXIT_FAILURE is returned on failures
• stress-sockdiag: rename rc to ret and ret to rc
• stress-cacheline: ensure EXIT_FAILURE is returned on data corruption
• stress-bsearch: ensure EXIT_FAILURE is returned on data mismatches
• stress-ng: set success flag to false on EXIT_SIGNALED exits
• stress-bitonicsort: ensure EXIT_FAILURE is returned on data
  mismatches
• stress-bigheap: ensure EXIT_FAILURE is returned on memory failures
• stress-affinity: remove space
• stress-matrix-3d: ensure EXIT_FAILURE is returned on data mismatch
• stress-matrix: ensure EXIT_FAILURE is returned on data mismatch
• stress-ng: fix missing FAILED flag increment for EXIT_SIGNALED state
• stress-fma: increment b in add231 to force use of fma instruction
• stress-filename: make static array posix_allowed const
• stress-acl: make static array stress_acl_tags const
• stress-workload: add some constifications and UNLIKELY on an if
• stress-io-uring: improve termination by enabling various flags
• core-out-of-memory: give at least 2 minutes before giving up waiting
  for OOMable child processes
• stress-ng: bail out with EXIT_NO_RESOURCE on sched_settings_apply
  call
• stress-inotify: replace __s32 with int32_t