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2014-10-13Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds34-30/+112
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnar: "The main changes in this cycle were: - changes related to No-CBs CPUs and NO_HZ_FULL - RCU-tasks implementation - torture-test updates - miscellaneous fixes - locktorture updates - RCU documentation updates" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (81 commits) workqueue: Use cond_resched_rcu_qs macro workqueue: Add quiescent state between work items locktorture: Cleanup header usage locktorture: Cannot hold read and write lock locktorture: Fix __acquire annotation for spinlock irq locktorture: Support rwlocks rcu: Eliminate deadlock between CPU hotplug and expedited grace periods locktorture: Document boot/module parameters rcutorture: Rename rcutorture_runnable parameter locktorture: Add test scenario for rwsem_lock locktorture: Add test scenario for mutex_lock locktorture: Make torture scripting account for new _runnable name locktorture: Introduce torture context locktorture: Support rwsems locktorture: Add infrastructure for torturing read locks torture: Address race in module cleanup locktorture: Make statistics generic locktorture: Teach about lock debugging locktorture: Support mutexes locktorture: Add documentation ...
2014-10-13Merge branch 'for-linus' of ↵Linus Torvalds1-60/+30
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "The big thing in this pile is Eric's unmount-on-rmdir series; we finally have everything we need for that. The final piece of prereqs is delayed mntput() - now filesystem shutdown always happens on shallow stack. Other than that, we have several new primitives for iov_iter (Matt Wilcox, culled from his XIP-related series) pushing the conversion to ->read_iter()/ ->write_iter() a bit more, a bunch of fs/dcache.c cleanups and fixes (including the external name refcounting, which gives consistent behaviour of d_move() wrt procfs symlinks for long and short names alike) and assorted cleanups and fixes all over the place. This is just the first pile; there's a lot of stuff from various people that ought to go in this window. Starting with unionmount/overlayfs mess... ;-/" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (60 commits) fs/file_table.c: Update alloc_file() comment vfs: Deduplicate code shared by xattr system calls operating on paths reiserfs: remove pointless forward declaration of struct nameidata don't need that forward declaration of struct nameidata in dcache.h anymore take dname_external() into fs/dcache.c let path_init() failures treated the same way as subsequent link_path_walk() fix misuses of f_count() in ppp and netlink ncpfs: use list_for_each_entry() for d_subdirs walk vfs: move getname() from callers to do_mount() gfs2_atomic_open(): skip lookups on hashed dentry [infiniband] remove pointless assignments gadgetfs: saner API for gadgetfs_create_file() f_fs: saner API for ffs_sb_create_file() jfs: don't hash direct inode [s390] remove pointless assignment of ->f_op in vmlogrdr ->open() ecryptfs: ->f_op is never NULL android: ->f_op is never NULL nouveau: __iomem misannotations missing annotation in fs/file.c fs: namespace: suppress 'may be used uninitialized' warnings ...
2014-10-12Merge tag 'kselftest-3.18-updates-1' of ↵Linus Torvalds2-40/+17
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest updates from Shuah Khan: - fix for missing arguments to printf - fix to build failures on 32-bit systems. - enhancement to run memfd_test run on all architectures as most architectures support __NR_memfd_create * tag 'kselftest-3.18-updates-1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/memfd: Run test on all architectures memfd_test: Add missing argument to printf() memfd_test: Make it work on 32-bit systems
2014-10-12Merge tag 'ftracetest-3.18' of ↵Linus Torvalds18-0/+445
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftrace test code from Steven Rostedt: "This patch series starts a new selftests section in the tools/testing/selftest directory called "ftrace" that holds tests aimed at testing ftrace and subsystems that use ftrace (like kprobes). So far only a few tests were written (by Masami Hiramatsu), but more will be added in the near future (3.19)" * tag 'ftracetest-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup test ftracetest: Add POSIX.3 standard and XFAIL result codes ftracetest: Add kprobe basic testcases ftracetest: Add ftrace basic testcases ftracetest: Initial commit for ftracetest
2014-10-12Merge tag 'ktest-v3.18' of ↵Linus Torvalds2-14/+57
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest Pull ktest update from Steven Rostedt: "A fix and a clean up to ktest, as well as two small features. - A way to allow users to skip a manual bisect. - Allowing cherry picked patches to be tested. The cherry pick worked for a test I needed, but stressing it may not have all the desired effects. It doesn't cause any regressions so I kept it in" * tag 'ktest-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: Don't bother with bisect good or bad on replay ktest: Fix check for new kernel success on rebooting to good kernel ktest: add ability to skip during BISECT_MANUAL ktest: Add PATCHCHECK_CHERRY
2014-10-12Merge branch 'for-linus' of ↵Linus Torvalds6-1/+167
git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull powerpc updates from Michael Ellerman: "Here's a first pull request for powerpc updates for 3.18. The bulk of the additions are for the "cxl" driver, for IBM's Coherent Accelerator Processor Interface (CAPI). Most of it's in drivers/misc, which Greg & Arnd maintain, Greg said he was happy for us to take it through our tree. There's the usual minor cleanups and fixes, including a bit of noise in drivers from some of those. A bunch of updates to our EEH code, which has been getting more testing. Several nice speedups from Anton, including 20% in clear_page(). And a bunch of updates for freescale from Scott" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits) cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking cxl: Add documentation for userspace APIs cxl: Add driver to Kbuild and Makefiles cxl: Add userspace header file cxl: Driver code for powernv PCIe based cards for userspace access cxl: Add base builtin support powerpc/mm: Add hooks for cxl powerpc/opal: Add PHB to cxl mode call powerpc/mm: Add new hash_page_mm() powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts cxl: Add new header for call backs and structs powerpc/powernv: Split out set MSI IRQ chip code powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize powerpc/msi: Improve IRQ bitmap allocator powerpc/cell: Make spu_flush_all_slbs() generic powerpc/cell: Move data segment faulting code out of cell platform powerpc/cell: Move spu_handle_mm_fault() out of cell platform powerpc/pseries: Use new defines when calling H_SET_MODE powerpc: Update contact info in Documentation files powerpc/perf/hv-24x7: Simplify catalog_read() ...
2014-10-10selftests/vm/transhuge-stress: stress test for memory compactionKonstantin Khlebnikov2-0/+145
This tool induces memory fragmentation via sequential allocation of transparent huge pages and splitting off everything except their last sub-pages. It easily generates pressure to the memory compaction code. $ perf stat -e 'compaction:*' -e 'migrate:*' ./transhuge-stress transhuge-stress: allocate 7858 transhuge pages, using 15716 MiB virtual memory and 61 MiB of ram transhuge-stress: 1.653 s/loop, 0.210 ms/page, 9504.828 MiB/s 7858 succeed, 0 failed, 2439 different pages transhuge-stress: 1.537 s/loop, 0.196 ms/page, 10226.227 MiB/s 7858 succeed, 0 failed, 2364 different pages transhuge-stress: 1.658 s/loop, 0.211 ms/page, 9479.215 MiB/s 7858 succeed, 0 failed, 2179 different pages transhuge-stress: 1.617 s/loop, 0.206 ms/page, 9716.992 MiB/s 7858 succeed, 0 failed, 2421 different pages ^C./transhuge-stress: Interrupt Performance counter stats for './transhuge-stress': 1.744.051 compaction:mm_compaction_isolate_migratepages 1.014 compaction:mm_compaction_isolate_freepages 1.744.051 compaction:mm_compaction_migratepages 1.647 compaction:mm_compaction_begin 1.647 compaction:mm_compaction_end 1.744.051 migrate:mm_migrate_pages 0 migrate:mm_numa_migrate_ratelimit 7,964696835 seconds time elapsed Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Rafael Aquini <aquini@redhat.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-10mm/balloon_compaction: add vmstat counters and kpageflags bitKonstantin Khlebnikov1-0/+1
Always mark pages with PageBalloon even if balloon compaction is disabled and expose this mark in /proc/kpageflags as KPF_BALLOON. Also this patch adds three counters into /proc/vmstat: "balloon_inflate", "balloon_deflate" and "balloon_migrate". They accumulate balloon activity. Current size of balloon is (balloon_inflate - balloon_deflate) pages. All generic balloon code now gathered under option CONFIG_MEMORY_BALLOON. It should be selected by ballooning driver which wants use this feature. Currently virtio-balloon is the only user. Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com> Cc: Rafael Aquini <aquini@redhat.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09Merge branch 'rcu/next' of ↵Ingo Molnar3-0/+8
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull additional commits for locktorture, from Paul E. McKenney. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-10-09saner perf_atoll()Al Viro1-60/+30
That loop in there is both anti-idiomatic *and* completely pointless. strtoll() is there for purpose; use it and compare what's left with acceptable suffices. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-10-08tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup testMasami Hiramatsu2-0/+31
Add two selftest scripts which tests kprobe-tracer as the startup selftest does. These test cases are testing that the kprobe_event can accept a kprobe event with $stack related arguments and a kretprobe event with $retval argument. Link: http://lkml.kernel.org/p/20141008040307.13415.45145.stgit@kbuild-f20.novalocal Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-08Merge tag 'usb-3.18-rc1' of ↵Linus Torvalds1-10/+116
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB updates from Greg KH: "Here's the big USB patchset for 3.18-rc1. Also in here is the PHY tree, as it seems to fit well with the USB tree for various reasons... Anyway, lots of little changes in here, all over the place, full details in the changelog All have been in the linux-next tree for a while with no issues" * tag 'usb-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (244 commits) USB: host: st: fix typo 'CONFIG_USB_EHCI_HCD_ST' uas: Reduce number of function arguments for uas_alloc_foo functions xhci: Allow xHCI drivers to be built as separate modules xhci: Export symbols used by host-controller drivers xhci: Check for XHCI_COMP_MODE_QUIRK when disabling D3cold xhci: Introduce xhci_init_driver() usb: hcd: add generic PHY support usb: rename phy to usb_phy in HCD usb: gadget: uvc: fix up uvcg_v4l2_get_unmapped_area typo USB: host: st: fix ehci/ohci driver selection usb: host: ehci-exynos: Remove unnecessary usb-phy support usb: core: return -ENOTSUPP for all targeted hosts USB: Remove .owner field for driver usb: core: log higher level message on malformed LANGID descriptor usb: Add LED triggers for USB activity usb: Rename usb-common.c usb: gadget: Refactor request completion usb: gadget: Introduce usb_gadget_giveback_request() usb: dwc2/gadget: move phy bus legth initialization phy: remove .owner field for drivers using module_platform_driver ...
2014-10-08ktest: Don't bother with bisect good or bad on replaySteven Rostedt (Red Hat)1-6/+8
If git bisect reply is being used in the bisect tests, don't bother doing the git bisect good or git bisect bad calls. The git bisect reply will override them anyway, and that's called immediately after the other two. Going the git bisect (good|bad) is just a waste of time. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-08ktest: Fix check for new kernel success on rebooting to good kernelSteven Rostedt (Red Hat)1-0/+6
The reboot function when rebooting back to a good kernel has a check to make sure that a new kernel was indeed booted. But that check uses a timeout value, which when calling the monitor will still return success if the timeout is hit (no bug was found). It should return an error to let the reboot code know that a new kernel was not reached. Only the reboot code checks the return value of the monitor. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-10-04ftracetest: Add POSIX.3 standard and XFAIL result codesMasami Hiramatsu13-33/+189
Add XFAIL and POSIX 1003.3 standard codes (UNRESOLVED/ UNTESTED/UNSUPPORTED) as result codes. These are used for the results that test case is expected to fail or unsupported feature (by config). To return these result code, this introduces exit_unresolved, exit_untested, exit_unsupported and exit_xfail functions, which use real-time signals to notify the result code to ftracetest. This also set "errexit" option for the testcases, so that the tests don't need to exit explicitly. Note that if the test returns UNRESOLVED/UNSUPPORTED/FAIL, its test log including executed commands is shown on console and main logfile as below. ------ # ./ftracetest samples/ === Ftrace unit tests === [1] failure-case example [FAIL] execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/fail.tc ++ cat non-exist-file cat: non-exist-file: No such file or directory [2] pass-case example [PASS] [3] unresolved-case example [UNRESOLVED] execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unresolved.tc ++ trap exit_unresolved INT ++ kill -INT 29324 +++ exit_unresolved +++ kill -s 38 29265 +++ exit 0 [4] unsupported-case example [UNSUPPORTED] execute: /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc + . /home/fedora/ksrc/linux-3/tools/testing/selftests/ftrace/samples/unsupported.tc ++ exit_unsupported ++ kill -s 40 29265 ++ exit 0 [5] untested-case example [UNTESTED] [6] xfail-case example [XFAIL] # of passed: 1 # of failed: 1 # of unresolved: 1 # of untested: 1 # of unsupported: 1 # of xfailed: 1 # of undefined(test bug): 0 ------ Link: http://lkml.kernel.org/p/20140929120211.30203.99510.stgit@kbuild-f20.novalocal Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-30locktorture: Support rwlocksDavidlohr Bueso3-0/+8
Add a "rw_lock" torture test to stress kernel rwlocks and their irq variant. Reader critical regions are 5x longer than writers. As such a similar ratio of lock acquisitions is seen in the statistics. In the case of massive contention, both hold the lock for 1/10 of a second. Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-30selftests/powerpc: Add test of load_unaligned_zero_pad()Michael Ellerman6-1/+167
It is a rarely exercised case, so we want to have a test to ensure it works as required. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-26tools: add more endian.h macrosPeter Foley1-0/+24
Add some more macros to tools/endian.h to allow mpssd to be compiled against glibc < 2.9. Signed-off-by: Peter Foley <pefoley2@pefoley.com> Cc: rdunlap@infradead.org Cc: linux-doc@vger.kernel.org Cc: sudeep.dutt@intel.com Cc: nikhil.rao@intel.com Cc: ashutosh.dixit@intel.com Cc: akpm@linux-foundation.org Cc: gregkh@linuxfoundation.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26Documentation: support glibc versions without htole macrosPeter Foley1-0/+32
glibc 2.9 introduced the htole<16/32/64> macros, add them to tools/include to support older versions of glibc. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-23ftracetest: Add kprobe basic testcasesMasami Hiramatsu2-0/+25
Add basic testcases for kprobe dynamic events. This also shows that the ftracetest accepts sub-directory for new testcases. Link: http://lkml.kernel.org/p/20140922234254.23415.46964.stgit@kbuild-f20.novalocal Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23ftracetest: Add ftrace basic testcasesMasami Hiramatsu3-0/+17
Add ftrace basic testcases. This just checks ftrace debugfs interface works as it is designed. Link: http://lkml.kernel.org/p/20140922234252.23415.62897.stgit@kbuild-f20.novalocal Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23ftracetest: Initial commit for ftracetestMasami Hiramatsu5-0/+216
ftracetest is a collection of testcase shell-scripts for ftrace. To avoid regressions of ftrace, these testcases check correct ftrace behaviors. If someone would like to add any features on ftrace, the patch series should have at least one testcase for checking the new behavior. Link: http://lkml.kernel.org/p/20140922234250.23415.68758.stgit@kbuild-f20.novalocal Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-23Merge branch 'rcu/next' of ↵Ingo Molnar32-30/+104
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull the v3.18 RCU changes from Paul E. McKenney: " * Update RCU documentation. These were posted to LKML at https://lkml.org/lkml/2014/8/28/378. * Miscellaneous fixes. These were posted to LKML at https://lkml.org/lkml/2014/8/28/386. An additional fix that eliminates a documented (but now inconvenient) deadlock between RCU hotplug and expedited grace periods was posted at https://lkml.org/lkml/2014/8/28/573. * Changes related to No-CBs CPUs and NO_HZ_FULL. These were posted to LKML at https://lkml.org/lkml/2014/8/28/412. * Torture-test updates. These were posted to LKML at https://lkml.org/lkml/2014/8/28/546 and at https://lkml.org/lkml/2014/9/11/1114. * RCU-tasks implementation. These were posted to LKML at https://lkml.org/lkml/2014/8/28/540. " Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-09-20ktest: add ability to skip during BISECT_MANUALChris J Arges1-2/+4
When doing a manual bisect, a build can fail or a test can be inconclusive. In these cases it would be helpful to be able to skip the test entirely. Link: http://lkml.kernel.org/r/1409164021-2136-1-git-send-email-chris.j.arges@canonical.com Reviewed-by: Satoru Takeuchi <satoru.takeuchi@gmail.com> Signed-off-by: Chris J Arges <chris.j.arges@canonical.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-20ktest: Add PATCHCHECK_CHERRYSteven Rostedt (Red Hat)2-6/+39
Add a way to run a patchcheck test on the commits that are in one branch but not in another. This uses git cherry to find a list of commits to test each one with. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-17selftests/memfd: Run test on all architecturesPranith Kumar1-21/+0
Remove the dependence on x86 to run the memfd test. Verfied on 32-bit powerpc. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-09-17rcutorture: Rename rcutorture_runnable parameterPaul E. McKenney1-1/+1
This commit changes rcutorture_runnable to torture_runnable, which is consistent with the names of the other parameters and is a bit shorter as well. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-17locktorture: Add test scenario for rwsem_lockPaul E. McKenney3-0/+8
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-17locktorture: Add test scenario for mutex_lockPaul E. McKenney3-0/+8
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-17locktorture: Make torture scripting account for new _runnable namePaul E. McKenney1-1/+1
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-16Merge branch 'rcu-tasks.2014.09.10a' into HEADPaul E. McKenney7-0/+33
rcu-tasks.2014.09.10a: Add RCU-tasks flavor of RCU.
2014-09-16Merge tag 'v3.17-rc5' into nextFelipe Balbi1-1/+1
Linux 3.17-rc5 Signed-off-by: Felipe Balbi <balbi@ti.com> Conflicts: Documentation/devicetree/bindings/usb/mxs-phy.txt drivers/usb/phy/phy-mxs-usb.c
2014-09-11rcutorture: Add RCU-tasks tests to default rcutorture listPaul E. McKenney1-0/+3
Although the test cases have been added, they must be specified explicitly via the kvm.sh --configs argument in order to run them. This commit therefore adds the RCU-tasks tests to the CFLIST so that they will be run automatically by default. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-08Merge tag 'v3.17-rc4' into nextFelipe Balbi40-11/+5636
Merge Linux 3.17-rc4 here so we have all the latest fixes on next too. This also cleans up a few conflicts when applying patches. Signed-off-by: Felipe Balbi <balbi@ti.com> Conflicts: drivers/usb/gadget/Makefile drivers/usb/gadget/function/Makefile drivers/usb/gadget/legacy/Makefile drivers/usb/phy/phy-samsung-usb.h
2014-09-08rcutorture: Add RCU-tasks test casesPaul E. McKenney6-0/+30
This commit adds the TASKS01 and TASKS02 Kconfig fragments, along with the corresponding TASKS01.boot and TASKS02.boot boot-parameter files specifying that rcutorture test RCU-tasks instead of the default flavor. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-08torture: Check for nul bytes in console outputPaul E. McKenney1-0/+4
When starting a new torture run while an old one is still running, both qemu processes can be outputting to the same console.out file. This can cause quite a bit of confusion, so this commit checks for this situation, which is normally indicated by nul bytes in the console output. Yes, if your new run uses up an exact number of blocks of the file, this check will be ineffective, but the odds are not bad. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-08torture: Print PID in hung-kernel diagnostic messagePaul E. McKenney1-1/+1
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-08rcutorture: Specify CONFIG_CPUMASK_OFFSTACK=y for TREE07Paul E. McKenney1-0/+1
This commit specifies offstack cpumasks in TREE07 in order to catch references to unallocated cpumask_var_t variables. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-08rcutorture: Specify MAXSMP=y for TREE01Paul E. McKenney5-5/+26
Setting CONFIG_MAXSMP=y causes cpumasks to be moved offstack, which introduces the possibility of NULL cpumask_var_t pointers. This commit therefore enables CONFIG_MAXSMP=y in TREE01 to increase test coverage. However, because CONFIG_MAXSMP=y implies 8192 CPUs, we need to use the maxcpus= boot parameter to limit the number of CPUs to something reasonable, which in turn requires updating the scripts to handle this. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-08rcutorture: Test partial nohz_full= configurationPaul E. McKenney2-1/+2
The current set of tests covers only cases where either all possible CPUs are nohz_full= CPUs or none of them are. Because there have been some recent bug escapes in cases where only some of the CPUs are nohz_full= CPUs, this commit add a configuration where only half of the CPUs are nohz_full= CPUs. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-08rcu: Add step to initrd documentationPaul E. McKenney1-0/+1
This commit tries to get people into the correct directory before creating the initrd directory. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
2014-09-08rcutorture: Set executable bit and drop bash from UsagePranith Kumar12-15/+12
This commit sets the executable bit on test scripts config2frag.sh and kvm.sh. Since #!/bin/bash is set in all the scripts, this commit also drops it from all usage lines because the scripts can now all be invoked directly. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-08rcutorture: Use bash shell for all the test scriptsPranith Kumar12-18/+18
Some of the scripts encode a default /bin/sh shell. On systems which use dash as default shell, these scripts fail as they are bash scripts. I encountered this while testing the sprintf() changes on a Debian system where dash is the default shell. This commit changes all such uses to use bash explicitly. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2014-09-05usb: usbip: fix usbip.h path in userspace toolPiotr Król1-1/+1
Fixes: 588b48caf65c ("usbip: move usbip userspace code out of staging") which introduced build failure by not changing uapi/usbip.h include path according to new location. Signed-off-by: Piotr Król <piotr.krol@3mdeb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-04memfd_test: Add missing argument to printf()Pranith Kumar1-1/+1
Add a missing path argument buf to printf() Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-09-04memfd_test: Make it work on 32-bit systemsPranith Kumar1-18/+16
This test currently fails on 32-bit systems since we use u64 type to pass the flags to fcntl. This commit changes this to use 'unsigned int' type for flags to fcntl making it work on 32-bit systems. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2014-09-02tools: ffs-test: add compatibility code for old kernelsMichal Nazarewicz1-5/+107
If ffs-test is used with a kernel prior to 3.14, which do not support the new descriptors format, it will fail when trying to write the descriptors. Add a function that converts the new descriptors to the legacy ones and use it to retry writing the descriptors using the legacy format. Also add “-l” flag to ffs-test which will cause the tool to never try the new format and instead immediatelly try the legacy one. This should be useful to test whether parsing of the old format still works on given 3.14+ kernel. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-09-02tools: ffs-test: convert to new descriptor formatMichal Nazarewicz1-5/+9
Since commit [ac8dde11: “Add flags to descriptors block”] functionfs supports a new, more powerful and extensible, descriptor format. Since ffs-test is probably the first thing users of the functionfs interface see when they start writing functionfs user space daemons, convert it to use the new format thus promoting it. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-08-30Merge branch 'akpm' (fixes from Andrew Morton)Linus Torvalds3-11/+11
Merge patches from Andrew Morton: "22 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits) kexec: purgatory: add clean-up for purgatory directory Documentation/kdump/kdump.txt: add ARM description flush_icache_range: export symbol to fix build errors tools: selftests: fix build issue with make kselftests target ocfs2: quorum: add a log for node not fenced ocfs2: o2net: set tcp user timeout to max value ocfs2: o2net: don't shutdown connection when idle timeout ocfs2: do not write error flag to user structure we cannot copy from/to x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory drivers/rtc/rtc-s5m.c: re-add support for devices without irq specified xattr: fix check for simultaneous glibc header inclusion kexec: remove CONFIG_KEXEC dependency on crypto kexec: create a new config option CONFIG_KEXEC_FILE for new syscall x86,mm: fix pte_special versus pte_numa hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked mm/zpool: use prefixed module loading zram: fix incorrect stat with failed_reads lib: turn CONFIG_STACKTRACE into an actual option. mm: actually clear pmd_numa before invalidating memblock, memhotplug: fix wrong type in memblock_find_in_range_node(). ...
2014-08-30tools: selftests: fix build issue with make kselftests targetPhong Tran3-11/+11
Fix the typo of ARCH when running 'make kselftests'. Change the 'X86' to 'x86'. Test by compilation. Signed-off-by: Phong Tran <tranmanphong@gmail.com> Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Hugh Dickins <hughd@google.com> Cc: Shuah Khan <shuah.kh@samsung.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>