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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
"This update consists of:
- Fixes and improvements to existing tests
- Moving code from Documentation to selftests, samples, and tools:
* Moves dnotify_test, prctl, ptp, vDSO, ia64, watchdog, and
networking tests from Documentation to selftests.
* Moves mic/mpssd, misc-devices/mei, timers, watchdog, auxdisplay,
and blackfin examples from Documentation to samples.
* Moves accounting, laptops/dslm, and pcmcia/crc32hash tools from
Documentation to tools.
* Deletes BUILD_DOCSRC and its dependencies"
* tag 'linux-kselftest-4.9-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (21 commits)
selftests/futex: Check ANSI terminal color support
Doc: update 00-INDEX files to reflect the runnable code move
samples: move blackfin gptimers-example from Documentation
tools: move pcmcia crc32hash tool from Documentation
tools: move laptops dslm tool from Documentation
tools: move accounting tool from Documentation
samples: move auxdisplay example code from Documentation
samples: move watchdog example code from Documentation
samples: move timers example code from Documentation
samples: move misc-devices/mei example code from Documentation
samples: move mic/mpssd example code from Documentation
selftests: Move networking/timestamping from Documentation
selftests: move watchdog tests from Documentation/watchdog
selftests: move ia64 tests from Documentation/ia64
selftests: move vDSO tests from Documentation/vDSO
selftests: move ptp tests from Documentation/ptp
selftests: move prctl tests from Documentation/prctl
selftests: move dnotify_test from Documentation/filesystems
selftests/timers: Add missing error code assignment before test
selftests/zram: replace ZRAM_LZ4_COMPRESS
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Because test for color support of the running shell does not aware ANSI
type terminals, it does not print colorful messages on some environemnt.
This commit modifies the test to aware ANSI type terminal, too.
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Remove networking from Documentation Makefile to move the test to
selftests. Update networking/timestamping Makefile to work under
selftests. These tests will not be run as part of selftests suite
and will not be included in install targets. They can be built and
run separately for now.
This is part of the effort to move runnable code from Documentation.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Remove watchdog-test from Makefile to move the test to selftests.
Add Makefile and .gitignore for watchdog-test. watchdog-test will
not be run as part of selftests suite and will not be included in
install targets. It can be built separately for now.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Remove ia64 from Makefile to move the test to selftests.
Update ia64 Makefile to work under selftests. ia64 will not be run as part
of selftests suite and will not be included in install targets. They can be
built separately for now.
The original Makefile built this test on all archirectures and this update
doesn't change that.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Remove vDSO from Makefile to move the to selftests. Update vDSO Makefile
to work under selftests. vDSO will not be run as part of selftests suite
and will not be included in install targets. They can be built separately
for now.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Remove ptp from Makefile to move the test to selftests. Update ptp Makefile
to work under selftests. ptp will not be run as part of selftests suite and
will not be included in install targets. They can be built separately for
now.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Move prctl tests from Documentation/prctl to selftests/prctl.
Remove prctl from Makefile to move the test. Update prctl Makefile to work
under selftests. prctl will not be run as part of selftests suite and will
not be included in install targets. They can be built separately for now.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Move dnotify_test.c, Makefile, and .gitignore from Documentation/filesystems
to selftests/filesystems.
Remove filesystems build target from Documentation/Makefile and update
selftests/filesystems/Makefile to work under selftests. dnotify_test will
not be run as part of selftests suite and will not be included in install
targets. It can be built separately for now.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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In order to work, the 'err' return value has to be updated otherwise the
test can never be true.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Since commit ce1ed9f98e88
("zram: delete custom lzo/lz4")
we need CONFIG_CRYPTO_LZ4=y instead of
CONFIG_ZRAM_LZ4_COMPRESS
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc updates from Michael Ellerman:
"Some more powerpc updates for 4.9:
Freescale updates from Scott Wood:
- qbman support (a prerequisite for datapath drivers such as ethernet)
- a PCI DMA fix+improvement
- reset handler changes
- more 8xx optimizations
- some cleanups and fixes.'
Fixes:
- selftests/powerpc: Add missing binaries to .gitignores (Michael Ellerman)
- selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes (Michael Ellerman)
- powerpc/pseries: Fix stack corruption in htpe code (Laurent Dufour)
- powerpc/64s: Fix power4_fixup_nap placement (Nicholas Piggin)
- powerpc/64: Fix incorrect return value from __copy_tofrom_user (Paul Mackerras)
- powerpc/mm/hash64: Fix might_have_hea() check (Michael Ellerman)
Other:
- MAINTAINERS: Remove myself from PA Semi entries (Olof Johansson)
- MAINTAINERS: Drop separate pseries entry (Michael Ellerman)
- MAINTAINERS: Update powerpc website & add selftests (Michael Ellerman):
* tag 'powerpc-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (35 commits)
powerpc/mm/hash64: Fix might_have_hea() check
powerpc/64: Fix incorrect return value from __copy_tofrom_user
powerpc/64s: Fix power4_fixup_nap placement
powerpc/pseries: Fix stack corruption in htpe code
selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes
MAINTAINERS: Update powerpc website & add selftests
MAINTAINERS: Drop separate pseries entry
MAINTAINERS: Remove myself from PA Semi entries
selftests/powerpc: Add missing binaries to .gitignores
arch/powerpc: Add CONFIG_FSL_DPAA to corenetXX_smp_defconfig
soc/qman: Add self-test for QMan driver
soc/bman: Add self-test for BMan driver
soc/fsl: Introduce DPAA 1.x QMan device driver
soc/fsl: Introduce DPAA 1.x BMan device driver
powerpc/8xx: make user addr DTLB miss the short path
powerpc/8xx: Move additional DTLBMiss handlers out of exception area
powerpc/8xx: use r3 to scratch CR in ITLBmiss
soc/fsl/qe: fix gpio save_regs functions
powerpc/8xx: add dedicated machine check handler
powerpc/8xx: add system_reset_exception
...
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The changes to make EXPORT_SYMBOL work in asm, specifically commit
9445aa1a3062 ("ppc: move exports to definitions"), in the kbuild tree,
breaks some of our selftests.
That is because we symlink the kernel code into the selftest, and shim
the required headers, and we are now missing asm/export.h
So create a minimal export.h to keep the tests building once powerpc and
the kbuild trees are merged.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Some of the recent new selftests were missing additions to .gitignore,
add them now.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull protection keys syscall interface from Thomas Gleixner:
"This is the final step of Protection Keys support which adds the
syscalls so user space can actually allocate keys and protect memory
areas with them. Details and usage examples can be found in the
documentation.
The mm side of this has been acked by Mel"
* 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pkeys: Update documentation
x86/mm/pkeys: Do not skip PKRU register if debug registers are not used
x86/pkeys: Fix pkeys build breakage for some non-x86 arches
x86/pkeys: Add self-tests
x86/pkeys: Allow configuration of init_pkru
x86/pkeys: Default to a restrictive init PKRU
pkeys: Add details of system call use to Documentation/
generic syscalls: Wire up memory protection keys syscalls
x86: Wire up protection keys system calls
x86/pkeys: Allocation/free syscalls
x86/pkeys: Make mprotect_key() mask off additional vm_flags
mm: Implement new pkey_mprotect() system call
x86/pkeys: Add fault handling for PF_PK page fault bit
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This code should be a good demonstration of how to use the new
system calls as well as how to use protection keys in general.
This code shows how to:
1. Manipulate the Protection Keys Rights User (PKRU) register
2. Set a protection key on memory
3. Fetch and/or modify PKRU from the signal XSAVE state
4. Read the kernel-provided protection key in the siginfo
5. Set up an execute-only mapping
There are currently 13 tests:
test_read_of_write_disabled_region
test_read_of_access_disabled_region
test_write_of_write_disabled_region
test_write_of_access_disabled_region
test_kernel_write_of_access_disabled_region
test_kernel_write_of_write_disabled_region
test_kernel_gup_of_access_disabled_region
test_kernel_gup_write_to_write_disabled_region
test_executing_on_unreadable_memory
test_ptrace_of_child
test_pkey_syscalls_on_non_allocated_pkey
test_pkey_syscalls_bad_args
test_pkey_alloc_exhaust
Each of the tests is run with plain memory (via mmap(MAP_ANON)),
transparent huge pages, and hugetlb.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: linux-arch@vger.kernel.org
Cc: Dave Hansen <dave@sr71.net>
Cc: mgorman@techsingularity.net
Cc: arnd@arndb.de
Cc: linux-api@vger.kernel.org
Cc: shuahkh@osg.samsung.com
Cc: linux-mm@kvack.org
Cc: luto@kernel.org
Cc: akpm@linux-foundation.org
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/20160729163024.FC5A0C2D@viggo.jf.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Merge updates from Andrew Morton:
- fsnotify updates
- ocfs2 updates
- all of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits)
console: don't prefer first registered if DT specifies stdout-path
cred: simpler, 1D supplementary groups
CREDITS: update Pavel's information, add GPG key, remove snail mail address
mailmap: add Johan Hovold
.gitattributes: set git diff driver for C source code files
uprobes: remove function declarations from arch/{mips,s390}
spelling.txt: "modeled" is spelt correctly
nmi_backtrace: generate one-line reports for idle cpus
arch/tile: adopt the new nmi_backtrace framework
nmi_backtrace: do a local dump_stack() instead of a self-NMI
nmi_backtrace: add more trigger_*_cpu_backtrace() methods
min/max: remove sparse warnings when they're nested
Documentation/filesystems/proc.txt: add more description for maps/smaps
mm, proc: fix region lost in /proc/self/smaps
proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self
proc: add LSM hook checks to /proc/<tid>/timerslack_ns
proc: relax /proc/<tid>/timerslack_ns capability requirements
meminfo: break apart a very long seq_printf with #ifdefs
seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char
proc: faster /proc/*/status
...
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This patch will randomly perform mlock/mlock2 on a given memory region,
and verify the RLIMIT_MEMLOCK limitation works properly.
Suggested-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/1473325970-11393-4-git-send-email-wei.guo.simon@gmail.com
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Eric B Munson <emunson@akamai.com>
Cc: Simon Guo <wei.guo.simon@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Alexey Klimov <klimov.linux@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Function seek_to_smaps_entry() can be useful for other selftest
functionalities, so move it out to header file.
Link: http://lkml.kernel.org/r/1473325970-11393-3-git-send-email-wei.guo.simon@gmail.com
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Eric B Munson <emunson@akamai.com>
Cc: Simon Guo <wei.guo.simon@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Alexey Klimov <klimov.linux@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch adds mlock() test for multiple invocation on the same address
area, and verify it doesn't mess the rlimit mlock limitation.
Link: http://lkml.kernel.org/r/1472554781-9835-5-git-send-email-wei.guo.simon@gmail.com
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Cc: Alexey Klimov <klimov.linux@gmail.com>
Cc: Eric B Munson <emunson@akamai.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Simon Guo <wei.guo.simon@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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To prepare mlock2.h whose functionality will be reused.
Link: http://lkml.kernel.org/r/1472554781-9835-4-git-send-email-wei.guo.simon@gmail.com
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Cc: Alexey Klimov <klimov.linux@gmail.com>
Cc: Eric B Munson <emunson@akamai.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Simon Guo <wei.guo.simon@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights:
- Major rework of Book3S 64-bit exception vectors (Nicholas Piggin)
- Use gas sections for arranging exception vectors et. al.
- Large set of TM cleanups and selftests (Cyril Bur)
- Enable transactional memory (TM) lazily for userspace (Cyril Bur)
- Support for XZ compression in the zImage wrapper (Oliver
O'Halloran)
- Add support for bpf constant blinding (Naveen N. Rao)
- Beginnings of upstream support for PA Semi Nemo motherboards
(Darren Stevens)
Fixes:
- Ensure .mem(init|exit).text are within _stext/_etext (Michael
Ellerman)
- xmon: Don't use ld on 32-bit (Michael Ellerman)
- vdso64: Use double word compare on pointers (Anton Blanchard)
- powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui)
- powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy)
- powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K
(Aneesh Kumar K.V)
- Fix memory leak in queue_hotplug_event() error path (Andrew
Donnellan)
- Replay hypervisor maintenance interrupt first (Nicholas Piggin)
Various performance optimisations (Anton Blanchard):
- Align hot loops of memset() and backwards_memcpy()
- During context switch, check before setting mm_cpumask
- Remove static branch prediction in atomic{, 64}_add_unless
- Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little
endian
- Set default CPU type to POWER8 for little endian builds
Cleanups & features:
- Sparse fixes/cleanups (Daniel Axtens)
- Preserve CFAR value on SLB miss caused by access to bogus address
(Paul Mackerras)
- Radix MMU fixups for POWER9 (Aneesh Kumar K.V)
- Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU)
(Simon Guo)
- Optimise syscall entry for virtual, relocatable case (Nicholas
Piggin)
- Optimise MSR handling in exception handling (Nicholas Piggin)
- Support for kexec with Radix MMU (Benjamin Herrenschmidt)
- powernv EEH fixes (Russell Currey)
- Suprise PCI hotplug support for powernv (Gavin Shan)
- Endian/sparse fixes for powernv PCI (Gavin Shan)
- Defconfig updates (Anton Blanchard)
- KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh)
- cxl: Flush PSL cache before resetting the adapter (Frederic Barrat)
- cxl: replace loop with for_each_child_of_node(), remove unneeded
of_node_put() (Andrew Donnellan)
- Fix HV facility unavailable to use correct handler (Nicholas
Piggin)
- Remove unnecessary syscall trampoline (Nicholas Piggin)
- fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael
Ellerman)
- Quieten EEH message when no adapters are found (Anton Blanchard)
- powernv: Add PHB register dump debugfs handle (Russell Currey)
- Use kprobe blacklist for exception handlers & asm functions
(Nicholas Piggin)
- Document the syscall ABI (Nicholas Piggin)
- MAINTAINERS: Update cxl maintainers (Michael Neuling)
- powerpc: Remove all usages of NO_IRQ (Michael Ellerman)
Minor cleanups:
- Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur,
Frederic Barrat, Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng,
Simon Guo"
* tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits)
powerpc/bpf: Add support for bpf constant blinding
powerpc/bpf: Implement support for tail calls
powerpc/bpf: Introduce accessors for using the tmp local stack space
powerpc/fadump: Fix build break when CONFIG_PROC_VMCORE=n
powerpc: tm: Enable transactional memory (TM) lazily for userspace
powerpc/tm: Add TM Unavailable Exception
powerpc: Remove do_load_up_transact_{fpu,altivec}
powerpc: tm: Rename transct_(*) to ck(\1)_state
powerpc: tm: Always use fp_state and vr_state to store live registers
selftests/powerpc: Add checks for transactional VSXs in signal contexts
selftests/powerpc: Add checks for transactional VMXs in signal contexts
selftests/powerpc: Add checks for transactional FPUs in signal contexts
selftests/powerpc: Add checks for transactional GPRs in signal contexts
selftests/powerpc: Check that signals always get delivered
selftests/powerpc: Add TM tcheck helpers in C
selftests/powerpc: Allow tests to extend their kill timeout
selftests/powerpc: Introduce GPR asm helper header file
selftests/powerpc: Move VMX stack frame macros to header file
selftests/powerpc: Rework FPU stack placement macros and move to header file
selftests/powerpc: Check for VSX preservation across userspace preemption
...
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If a thread receives a signal while transactional the kernel creates a
second context to show the transactional state of the process. This
test loads some known values and waits for a signal and confirms that
the expected values are in the signal context.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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If a thread receives a signal while transactional the kernel creates a
second context to show the transactional state of the process. This
test loads some known values and waits for a signal and confirms that
the expected values are in the signal context.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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If a thread receives a signal while transactional the kernel creates a
second context to show the transactional state of the process. This
test loads some known values and waits for a signal and confirms that
the expected values are in the signal context.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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If a thread receives a signal while transactional the kernel creates a
second context to show the transactional state of the process. This
test loads some known values and waits for a signal and confirms that
the expected values are in the signal context.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The FPU regs are placed at the top of the stack frame. Currently the
position expected to be passed to the macro. The macros now should be
passed the stack frame size and from there they can calculate where to
put the regs, this makes the use simpler.
Also move them to a header file to be used in an different area of the
powerpc selftests
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Ensure the kernel correctly switches VSX registers correctly. VSX
registers are all volatile, and despite the kernel preserving VSX
across syscalls, it doesn't have to. Test that during interrupts and
timeslices ending the VSX regs remain the same.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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It might be nice to compile selftests against older kernels and
headers but which may not have HWCAP2.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace updates from Eric Biederman:
"This set of changes is a number of smaller things that have been
overlooked in other development cycles focused on more fundamental
change. The devpts changes are small things that were a distraction
until we managed to kill off DEVPTS_MULTPLE_INSTANCES. There is an
trivial regression fix to autofs for the unprivileged mount changes
that went in last cycle. A pair of ioctls has been added by Andrey
Vagin making it is possible to discover the relationships between
namespaces when referring to them through file descriptors.
The big user visible change is starting to add simple resource limits
to catch programs that misbehave. With namespaces in general and user
namespaces in particular allowing users to use more kinds of
resources, it has become important to have something to limit errant
programs. Because the purpose of these limits is to catch errant
programs the code needs to be inexpensive to use as it always on, and
the default limits need to be high enough that well behaved programs
on well behaved systems don't encounter them.
To this end, after some review I have implemented per user per user
namespace limits, and use them to limit the number of namespaces. The
limits being per user mean that one user can not exhause the limits of
another user. The limits being per user namespace allow contexts where
the limit is 0 and security conscious folks can remove from their
threat anlysis the code used to manage namespaces (as they have
historically done as it root only). At the same time the limits being
per user namespace allow other parts of the system to use namespaces.
Namespaces are increasingly being used in application sand boxing
scenarios so an all or nothing disable for the entire system for the
security conscious folks makes increasing use of these sandboxes
impossible.
There is also added a limit on the maximum number of mounts present in
a single mount namespace. It is nontrivial to guess what a reasonable
system wide limit on the number of mount structure in the kernel would
be, especially as it various based on how a system is using
containers. A limit on the number of mounts in a mount namespace
however is much easier to understand and set. In most cases in
practice only about 1000 mounts are used. Given that some autofs
scenarious have the potential to be 30,000 to 50,000 mounts I have set
the default limit for the number of mounts at 100,000 which is well
above every known set of users but low enough that the mount hash
tables don't degrade unreaonsably.
These limits are a start. I expect this estabilishes a pattern that
other limits for resources that namespaces use will follow. There has
been interest in making inotify event limits per user per user
namespace as well as interest expressed in making details about what
is going on in the kernel more visible"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (28 commits)
autofs: Fix automounts by using current_real_cred()->uid
mnt: Add a per mount namespace limit on the number of mounts
netns: move {inc,dec}_net_namespaces into #ifdef
nsfs: Simplify __ns_get_path
tools/testing: add a test to check nsfs ioctl-s
nsfs: add ioctl to get a parent namespace
nsfs: add ioctl to get an owning user namespace for ns file descriptor
kernel: add a helper to get an owning user namespace for a namespace
devpts: Change the owner of /dev/pts/ptmx to the mounter of /dev/pts
devpts: Remove sync_filesystems
devpts: Make devpts_kill_sb safe if fsi is NULL
devpts: Simplify devpts_mount by using mount_nodev
devpts: Move the creation of /dev/pts/ptmx into fill_super
devpts: Move parse_mount_options into fill_super
userns: When the per user per user namespace limit is reached return ENOSPC
userns; Document per user per user namespace limits.
mntns: Add a limit on the number of mount namespaces.
netns: Add a limit on the number of net namespaces
cgroupns: Add a limit on the number of cgroup namespaces
ipcns: Add a limit on the number of ipc namespaces
...
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There are two new ioctl-s:
One ioctl for the user namespace that owns a file descriptor.
One ioctl for the parent namespace of a namespace file descriptor.
The test checks that these ioctl-s works and that they handle a case
when a target namespace is outside of the current process namespace.
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
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RAX is handled specially in ESPFIX64. Use CX as our scratch
register so that, if something goes wrong with RAX handling, we'll
notice.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/9ceeb24ea56925586c330dc46306f757ddea9fb5.1473717910.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Trivial fix to spelling mistakes in printf messages.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kselftest@vger.kernel.org
Link: http://lkml.kernel.org/r/20160828105106.9763-1-colin.king@canonical.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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We have some tests that assume we're using std=gnu99, which is fine on
most compilers, but some old compilers use a different default.
So make it explicit that we want to use std=gnu99.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Pull NTB updates from Jon Mason:
"NTB bug fixes for the ntb_tool and ntb_perf, and improvements to the
ntb_perf and ntb_pingpong for increased debugability.
Also, modification to the ntb_transport layer to increase/decrease
the number of transport entries depending on the ring size"
* tag 'ntb-4.8' of git://github.com/jonmason/ntb:
NTB: ntb_hw_intel: use local variable pdev
NTB: ntb_hw_intel: show BAR size in debugfs info
ntb_test: Add a selftest script for the NTB subsystem
ntb_perf: clear link_is_up flag when the link goes down.
ntb_pingpong: Add a debugfs file to get the ping count
ntb_tool: Add link status and files to debugfs
ntb_tool: Postpone memory window initialization for the user
ntb_perf: Wait for link before running test
ntb_perf: Return results by reading the run file
ntb_perf: Improve thread handling to increase robustness
ntb_perf: Schedule based on time not on performance
ntb_transport: Check the number of spads the hardware supports
ntb_tool: Add memory window debug support
ntb_perf: Allow limiting the size of the memory windows
NTB: allocate number transport entries depending on size of ring size
ntb_tool: BUG: Ensure the buffer size is large enough to return all spads
ntb_tool: Fix infinite loop bug when writing spad/peer_spad file
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This script automates testing doorbells, scratchpads and memory windows
for an NTB device. It can be run locally, with the NTB looped
back to the same host or use SSH to remotely control the second host.
In the single host case, the script just needs to be passed two
arguments: a PCI ID for each side of the link. In the two host case
the -r option must be used to specify the remote hostname (which must
be SSH accessible and should probably have ssh-keys exchanged).
A sample run looks like this:
$ sudo ./ntb_test.sh 0000:03:00.1 0000:83:00.1 -p 29
Starting ntb_tool tests...
Running link tests on: 0000:03:00.1 / 0000:83:00.1
Passed
Running link tests on: 0000:83:00.1 / 0000:03:00.1
Passed
Running db tests on: 0000:03:00.1 / 0000:83:00.1
Passed
Running db tests on: 0000:83:00.1 / 0000:03:00.1
Passed
Running spad tests on: 0000:03:00.1 / 0000:83:00.1
Passed
Running spad tests on: 0000:83:00.1 / 0000:03:00.1
Passed
Running mw0 tests on: 0000:03:00.1 / 0000:83:00.1
Passed
Running mw0 tests on: 0000:83:00.1 / 0000:03:00.1
Passed
Running mw1 tests on: 0000:03:00.1 / 0000:83:00.1
Passed
Running mw1 tests on: 0000:83:00.1 / 0000:03:00.1
Passed
Starting ntb_pingpong tests...
Running ping pong tests on: 0000:03:00.1 / 0000:83:00.1
Passed
Starting ntb_perf tests...
Running local perf test without DMA
0: copied 536870912 bytes in 164453 usecs, 3264 MBytes/s
Passed
Running remote perf test without DMA
0: copied 536870912 bytes in 164453 usecs, 3264 MBytes/s
Passed
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"RTC for 4.8
Cleanups:
- huge cleanup of rtc-generic and char/genrtc this allowed to cleanup
rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc
- move mn10300 to rtc-cmos
Subsystem:
- fix wakealarms after hibernate
- multiples fixes for rctest
- simplify implementations of .read_alarm
New drivers:
- Maxim MAX6916
Drivers:
- ds1307: fix weekday
- m41t80: add wakeup support
- pcf85063: add support for PCF85063A variant
- rv8803: extend i2c fix and other fixes
- s35390a: fix alarm reading, this fixes instant reboot after
shutdown for QNAP TS-41x
- s3c: clock fixes"
* tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits)
rtc: rv8803: Clear V1F when setting the time
rtc: rv8803: Stop the clock while setting the time
rtc: rv8803: Always apply the I²C workaround
rtc: rv8803: Fix read day of week
rtc: rv8803: Remove the check for valid time
rtc: rv8803: Kconfig: Indicate rx8900 support
rtc: asm9260: remove .owner field for driver
rtc: at91sam9: Fix missing spin_lock_init()
rtc: m41t80: add suspend handlers for alarm IRQ
rtc: m41t80: make it a real error message
rtc: pcf85063: Add support for the PCF85063A device
rtc: pcf85063: fix year range
rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy
rtc: explicitly set tm_sec = 0 for drivers with minute accurancy
rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq()
rtc: s3c: Remove unnecessary call to disable already disabled clock
rtc: abx80x: use devm_add_action_or_reset()
rtc: m41t80: use devm_add_action_or_reset()
rtc: fix a typo and reduce three empty lines to one
rtc: s35390a: improve two comments in .set_alarm
...
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A call to ioctl(..., RTC_IRQP_SET, ...) should never result in
ENOTTY. All new style RTC drivers implement it and all of the old style
drivers return EINVAL when they don't support periodic IRQs.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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A call to ioctl(..., RTC_IRQP_READ, ...) should never result in
ENOTTY. All new style RTC drivers implement it and all of the old style
drivers return EINVAL when they don't support periodic IRQs.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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For old style drivers, call a call to ioctl(..., RTC_ALM_SET, ...):
- char/ds1302.c will always return -EINVAL
- char/genrtc.c: will always return -EINVAL
- char/rtc.c will succeed regardless if IRQs are supported or not
- char/efirtc.c will always return -EINVAL
- input/misc/hp_sdc_rtc.c ... that ioctl code is a good lesson about
ifdefing code out and punting implementation ... and it will
always return -EINVAL
For new style rtc drivers, a call to ioctl(..., RTC_ALM_SET, ...) never
results in a call to __rtc_set_alarm, since struct rtc_wkalarm passed to
rtc_set_alarm has 'enabled' field set to 0. This means that
rtc->ops->set_alarm driver hook is never called in that ioctl. Since no
driver code interaction happens as a part of that call, using its
results to ascertain properties of the driver is not going to work. To
remedy this - use the result of RTC_AIE_ON to make the judgement.
This patch also changes ENOTTY to EINVAL as an error code value that
would tell us that IRQs are not supported. There are three reason for
this:
- As mentioned above old style driver never returns ENOTTY for this
ioctl
- In it's code __rtc_set_alarm() returns -EINVAL if rtc->ops->set_alarm
method is not provided by the driver, so one reason for change is to
be consistent with that code path.
- A call to ioctl(..., RTC_UIE_ON, ...) will result in a call to
rtc_update_irq_enable() and then __rtc_set_alarm(), which, if IRQs
are not supported by the driver, will result in a non-zero error
code. Returning ENOTTY in that case would:
a) Not be consistent with other codepaths of
rtc_update_irq_enable, for example the check of
rtc->uie_unsupported
b) Would break update IRQ emulation code since that codpath
expects EINVAL
c) Would break test's logic for feature support detection in
the case of RTC_UIE_ON ioctl
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
"This contains new tests and fixes:
- a few fixes to existing tests
- new media tests for testing driver unbind, and device removal paths
while an user application is actively making system calls and
ioctls"
* tag 'linux-kselftest-4.8-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: media_tests add a new video device test
selftests: media_tests - Add media_device_open to .gitignore
selftests: add media controller regression test scripts and document
selftests: add media_device_open test
selftests: media_device_test change it to randomize loop count
selftests/vm: Don't mlockall MCL_CURRENT in on-fault-limit test
selftests/vm: write strlen length instead of sizeof to nr_hugepages
selftests/lib: set printf.sh executable
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Add a new video device test that opens user specified Video Device and
calls video ioctls in a loop once every 10 seconds.
This test is intended for testing device removal and driver unbind while
an ioctl is active. Clean device removal and driver unbind is expected
without any use-after-free and panics.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Add media_device_open to .gitignore
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Add regression test scripts open_loop_test.sh, and bind_unbind_sample.sh.
Also add regression_test.txt that describes the regression test procedure.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Add a new media test to open, run ioctl, and close the media device file.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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