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2016-12-01selftest: sync: merge tests for sw_sync frameworkEmilio López
These tests are based on the libsync test suite from Android. This commit includes tests for basic merge operations. Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2016-12-01selftest: sync: fence tests for sw_sync frameworkEmilio López
These tests are based on the libsync test suite from Android. This commit includes tests for basic fence creation. Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2016-12-01selftest: sync: basic tests for sw_sync frameworkEmilio López
These tests are based on the libsync test suite from Android. This commit lays the ground for future tests, as well as includes tests for a variety of basic allocation commands. Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2016-11-30bpf: add test for the verifier equal logic bugJosef Bacik
This is a test to verify that bpf: fix states equal logic for varlen access actually fixed the problem. The problem was if the register we added to our map register was UNKNOWN in both the false and true branches and the only thing that changed was the range then we'd incorrectly assume that the true branch was valid, which it really wasnt. This tests this case and properly fails without my fix in place and passes with it in place. Signed-off-by: Josef Bacik <jbacik@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29selftests/timers: Fix spelling mistake "Asyncrhonous" -> "Asynchronous"Colin Ian King
Trivial fix to spelling mistake Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/1480372524-15181-2-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-27bpf: fix multiple issues in selftest suite and samplesDaniel Borkmann
1) The test_lru_map and test_lru_dist fails building on my machine since the sys/resource.h header is not included. 2) test_verifier fails in one test case where we try to call an invalid function, since the verifier log output changed wrt printing function names. 3) Current selftest suite code relies on sysconf(_SC_NPROCESSORS_CONF) for retrieving the number of possible CPUs. This is broken at least in our scenario and really just doesn't work. glibc tries a number of things for retrieving _SC_NPROCESSORS_CONF. First it tries equivalent of /sys/devices/system/cpu/cpu[0-9]* | wc -l, if that fails, depending on the config, it either tries to count CPUs in /proc/cpuinfo, or returns the _SC_NPROCESSORS_ONLN value instead. If /proc/cpuinfo has some issue, it returns just 1 worst case. This oddity is nothing new [1], but semantics/behaviour seems to be settled. _SC_NPROCESSORS_ONLN will parse /sys/devices/system/cpu/online, if that fails it looks into /proc/stat for cpuX entries, and if also that fails for some reason, /proc/cpuinfo is consulted (and returning 1 if unlikely all breaks down). While that might match num_possible_cpus() from the kernel in some cases, it's really not guaranteed with CPU hotplugging, and can result in a buffer overflow since the array in user space could have too few number of slots, and on perpcu map lookup, the kernel will write beyond that memory of the value buffer. William Tu reported such mismatches: [...] The fact that sysconf(_SC_NPROCESSORS_CONF) != num_possible_cpu() happens when CPU hotadd is enabled. For example, in Fusion when setting vcpu.hotadd = "TRUE" or in KVM, setting ./qemu-system-x86_64 -smp 2, maxcpus=4 ... the num_possible_cpu() will be 4 and sysconf() will be 2 [2]. [...] Documentation/cputopology.txt says /sys/devices/system/cpu/possible outputs cpu_possible_mask. That is the same as in num_possible_cpus(), so first step would be to fix the _SC_NPROCESSORS_CONF calls with our own implementation. Later, we could add support to bpf(2) for passing a mask via CPU_SET(3), for example, to just select a subset of CPUs. BPF samples code needs this fix as well (at least so that people stop copying this). Thus, define bpf_num_possible_cpus() once in selftests and import it from there for the sample code to avoid duplicating it. The remaining sysconf(_SC_NPROCESSORS_CONF) in samples are unrelated. After all three issues are fixed, the test suite runs fine again: # make run_tests | grep self selftests: test_verifier [PASS] selftests: test_maps [PASS] selftests: test_lru_map [PASS] selftests: test_kmod.sh [PASS] [1] https://www.sourceware.org/ml/libc-alpha/2011-06/msg00079.html [2] https://www.mail-archive.com/netdev@vger.kernel.org/msg121183.html Fixes: 3059303f59cf ("samples/bpf: update tracex[23] examples to use per-cpu maps") Fixes: 86af8b4191d2 ("Add sample for adding simple drop program to link") Fixes: df570f577231 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAY") Fixes: e15596717948 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_HASH") Fixes: ebb676daa1a3 ("bpf: Print function name in addition to function id") Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: William Tu <u9012063@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-22selftests: ftrace: Add a testcase for types of kprobe eventMasami Hiramatsu
Add a testcase for types of kprobe event. This checks kprobe event can accept and correctly expressed the arguments typed as s32, u32, x32 and bitfield. Here is the test result. ----- # ./ftracetest test.d/kprobe/kprobe_args_type.tc === Ftrace unit tests === [1] Kprobes event arguments with types [PASS] # of passed: 1 # of failed: 0 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 ----- Link: http://lkml.kernel.org/r/147928409063.22982.3499119203875115458.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-22selftests: ftrace: Add a testcase for function filter glob matchMasami Hiramatsu
Add function filter glob matching test case. This checks whether the kernel supports glob matching (front match, end match, middle match, side match, character class and '?'). Here is the test result. ----- ./ftracetest test.d/ftrace/func-filter-glob.tc === Ftrace unit tests === [1] ftrace - function glob filters [PASS] # of passed: 1 # of failed: 0 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 ----- Link: http://lkml.kernel.org/r/147928407589.22982.16364174511117104303.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-22selftests: ftrace: Introduce TMPDIR for temporary filesMasami Hiramatsu
Introduce TMPDIR variable which is removed after each test is done, so that the test script can put their temporary files in that. Link: http://lkml.kernel.org/r/147928406116.22982.8761924340108532378.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-22selftests: ftrace: Hide ftracetest logs from gitMasami Hiramatsu
Hide ftracetest result log directory from git. Link: http://lkml.kernel.org/r/147928404640.22982.13173364949326289032.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-22selftests: ftrace: Fix trigger-mod to run without syscall traceMasami Hiramatsu
Since histogram trigger id.syscall depends on CONFIG_FTRACE_SYSCALLS, a testcase in trigger-modifier test fails if that config is disabled. Fix this bug by using flexible pattern to check the histogram output. Link: http://lkml.kernel.org/r/147928402670.22982.15589445159052676877.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-22selftests: ftrace: Check whether snapshot trigger is supported correctlyMasami Hiramatsu
If "snapshot" special file doesn't exist, that kernel does not support snapshot and snapshot trigger too. In that case snapshot trigger test results to unsupported instead of fail. Link: http://lkml.kernel.org/r/147928401215.22982.10411665829041109794.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-22selftests: ftrace: Add --quiet option not to show error logs on screenMasami Hiramatsu
Since the verbose error logs scrolls out previous test results --quiet option suppress to show such message. e.g. # ./ftracetest -q === Ftrace unit tests === [1] Basic trace file check [PASS] [2] Basic test for tracers [PASS] [3] Basic trace clock test [PASS] [4] Basic event tracing check [PASS] [5] event tracing - enable/disable with event level files [PASS] [6] event tracing - restricts events based on pid [PASS] [7] event tracing - enable/disable with subsystem level files [PASS] [8] event tracing - enable/disable with top level files [PASS] [9] ftrace - function graph filters with stack tracer [UNSUPPORTED] [10] ftrace - function graph filters [UNSUPPORTED] [11] ftrace - function profiler with function tracing [UNSUPPORTED] [12] Test creation and deletion of trace instances while setting an event [PASS] [13] Test creation and deletion of trace instances [PASS] [14] Kprobe dynamic event - adding and removing [UNSUPPORTED] [15] Kprobe dynamic event - busy event check [UNSUPPORTED] [16] Kprobe dynamic event with arguments [UNSUPPORTED] [17] Kprobe dynamic event with function tracer [UNSUPPORTED] [18] Kretprobe dynamic event with arguments [UNSUPPORTED] [19] event trigger - test event enable/disable trigger [PASS] [20] event trigger - test trigger filter [PASS] [21] event trigger - test histogram modifiers [UNSUPPORTED] [22] event trigger - test histogram trigger [UNSUPPORTED] [23] event trigger - test multiple histogram triggers [UNSUPPORTED] [24] event trigger - test snapshot-trigger [FAIL] [25] event trigger - test stacktrace-trigger [PASS] [26] event trigger - test traceon/off trigger [PASS] # of passed: 14 # of failed: 1 # of unresolved: 0 # of untested: 0 # of unsupported: 11 # of xfailed: 0 # of undefined(test bug): 0 Link: http://lkml.kernel.org/r/147928399712.22982.8284640390982775052.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-22selftests: ftrace: Initialize ftrace before each testMasami Hiramatsu
Reset ftrace to initial state before running each test. This fixes some test cases to enable tracing before starting trace test. This can avoid false-positive failure when previous testcase fails while disabling tracing. Link: http://lkml.kernel.org/r/147928398192.22982.7767460638302113002.stgit@devbox Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-11-18selftests: arm64: add test for unaligned/inexact watchpoint handlingPratyush Anand
ARM64 hardware expects 64bit aligned address for watchpoint invocation. However, it provides byte selection method to select any number of consecutive byte set within the range of 1-8. This patch adds support to test all such byte selection option for different memory write sizes. Patch also adds a test for handling the case when the cpu does not report an address which exactly matches one of the regions we have been watching (which is a situation permitted by the spec if an instruction accesses both watched and unwatched regions). The test was failing on a MSM8996pro before this patch series and is passing now. Signed-off-by: Pavel Labath <labath@google.com> Signed-off-by: Pratyush Anand <panand@redhat.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-11-17selftests/x86: Add test_vdso to test getcpu()Andy Lutomirski
I'll eventually add tests for more vDSO functions here. Signed-off-by: Andy Lutomirski <luto@kernel.org> 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: Megha <megha.dey@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/945cd29901a62a3cc6ea7d6ee5e389ab1ec1ac0c.1479320367.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-17selftests/powerpc: Add ptrace tests for TM SPR registersAnshuman Khandual
This patch adds ptrace interface test for TM SPR registers. This also adds ptrace interface based helper functions related to TM SPR registers access. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for VSX, VMX registers in suspended TMAnshuman Khandual
This patch adds ptrace interface test for VSX, VMX registers inside suspended TM context. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for VSX, VMX registers in TMAnshuman Khandual
This patch adds ptrace interface test for VSX, VMX registers inside TM context. This also adds ptrace interface based helper functions related to chckpointed VSX, VMX registers access. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for VSX, VMX registersAnshuman Khandual
This patch adds ptrace interface test for VSX, VMX registers. This also adds ptrace interface based helper functions related to VSX, VMX registers access. This also adds some assembly helper functions related to VSX and VMX registers. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for TAR, PPR, DSCR in suspended TMAnshuman Khandual
This patch adds ptrace interface test for TAR, PPR, DSCR registers inside suspended TM context. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for TAR, PPR, DSCR in TMAnshuman Khandual
This patch adds ptrace interface test for TAR, PPR, DSCR registers inside TM context. This also adds ptrace interface based helper functions related to checkpointed TAR, PPR, DSCR register access. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for TAR, PPR, DSCR registersAnshuman Khandual
This patch adds ptrace interface test for TAR, PPR, DSCR registers. This also adds ptrace interface based helper functions related to TAR, PPR, DSCR register access. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for GPR/FPR registers in suspended TMAnshuman Khandual
This patch adds ptrace interface test for GPR/FPR registers inside suspended TM context. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for GPR/FPR registers in TMAnshuman Khandual
This patch adds ptrace interface test for GPR/FPR registers inside TM context. This adds ptrace interface based helper functions related to checkpointed GPR/FPR access. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add ptrace tests for GPR/FPR registersAnshuman Khandual
This patch adds ptrace interface test for GPR/FPR registers. This adds ptrace interface based helper functions related to GPR/FPR access and some assembly helper functions related to GPR/FPR registers. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> [mpe: Add #defines for the new note types when headers don't define them] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Move shared headers into new include dirSimon Guo
There are some functions, especially register related, which can be shared across multiple selftests/powerpc test directories. This patch creates a new include directory to store those shared files, so that the file layout becomes more neat. Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> [mpe: Reworked to move the headers only] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-17selftests/powerpc: Add more SPR numbers, TM & VMX instructions to ↵Anshuman Khandual
'reg.h'/'instructions.h' This patch adds SPR number for TAR, PPR, DSCR special purpose registers. It also adds TM, VSX, VMX related instructions which will then be used by patches later in the series. Now that the new DSCR register definitions (SPRN_DSCR_PRIV and SPRN_DSCR) are defined outside this directory, use them instead. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-15bpf: Add tests for the LRU bpf_htabMartin KaFai Lau
This patch has some unit tests and a test_lru_dist. The test_lru_dist reads in the numeric keys from a file. The files used here are generated by a modified fio-genzipf tool originated from the fio test suit. The sample data file can be found here: https://github.com/iamkafai/bpf-lru The zipf.* data files have 100k numeric keys and the key is also ranged from 1 to 100k. The test_lru_dist outputs the number of unique keys (nr_unique). F.e. The following means, 61239 of them is unique out of 100k keys. nr_misses means it cannot be found in the LRU map, so nr_misses must be >= nr_unique. test_lru_dist also simulates a perfect LRU map as a comparison: [root@arch-fb-vm1 ~]# ~/devshare/fb-kernel/linux/samples/bpf/test_lru_dist \ /root/zipf.100k.a1_01.out 4000 1 ... test_parallel_lru_dist (map_type:9 map_flags:0x0): task:0 BPF LRU: nr_unique:23093(/100000) nr_misses:31603(/100000) task:0 Perfect LRU: nr_unique:23093(/100000 nr_misses:34328(/100000) .... test_parallel_lru_dist (map_type:9 map_flags:0x2): task:0 BPF LRU: nr_unique:23093(/100000) nr_misses:31710(/100000) task:0 Perfect LRU: nr_unique:23093(/100000 nr_misses:34328(/100000) [root@arch-fb-vm1 ~]# ~/devshare/fb-kernel/linux/samples/bpf/test_lru_dist \ /root/zipf.100k.a0_01.out 40000 1 ... test_parallel_lru_dist (map_type:9 map_flags:0x0): task:0 BPF LRU: nr_unique:61239(/100000) nr_misses:67054(/100000) task:0 Perfect LRU: nr_unique:61239(/100000 nr_misses:66993(/100000) ... test_parallel_lru_dist (map_type:9 map_flags:0x2): task:0 BPF LRU: nr_unique:61239(/100000) nr_misses:67068(/100000) task:0 Perfect LRU: nr_unique:61239(/100000 nr_misses:66993(/100000) LRU map has also been added to map_perf_test: /* Global LRU */ [root@kerneltest003.31.prn1 ~]# for i in 1 4 8; do echo -n "$i cpus: "; \ ./map_perf_test 16 $i | awk '{r += $3}END{print r " updates"}'; done 1 cpus: 2934082 updates 4 cpus: 7391434 updates 8 cpus: 6500576 updates /* Percpu LRU */ [root@kerneltest003.31.prn1 ~]# for i in 1 4 8; do echo -n "$i cpus: "; \ ./map_perf_test 32 $i | awk '{r += $3}END{print r " updates"}'; done 1 cpus: 2896553 updates 4 cpus: 9766395 updates 8 cpus: 17460553 updates Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-14torture: Prevent jitter from delaying build-only runsPaul E. McKenney
Currently, if the --jitter flag specifies jitter for a --build-only run, the system will obediently build a kernel, refuse to launch it, launch the requested number of jitter processes, and wait for the specified kernel run time, which defaults to 30 minutes. This is of course quite pointless. This commit therefore disables jitter on build-only runs. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2016-11-14torture: Remove obsolete files from rcutorture .gitignorePaul E. McKenney
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2016-11-14selftests/powerpc: Return false instead of -1 in require_paranoia_below()Peter Senna Tschudin
Returning a negative value for a boolean function seem to have the undesired effect of returning true. require_paranoia_below() is a boolean function, but the variable used to store the return value is an integer, receiving -1 or 0. This patch converts rc to bool, replaces -1 by false, and 0 by true. mpe: This wasn't exhibiting in practice because the common case, where we do the comparison of the desired level vs the current value, was being compiled into a computation based on the result of the comparison, ie. it wasn't using the default -1 value at all. However that was just luck and the code is still wrong. Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Andrew Shadura <andrew.shadura@collabora.co.uk> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14selftests/powerpc: Revert Load Monitor Register TestsMichael Neuling
Load monitored won't be supported in POWER9, so PPC_FEATURE2_ARCH_3_00 (in HWCAP2) will no longer imply Load monitor support. These Load monitored tests are enabled by PPC_FEATURE2_ARCH_3_00 so they are now bogus and need to be removed. This reverts commit 16c19a2e9833 ("selftests/powerpc: Load Monitor Register Tests"). Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14powerpc: Add support for relative exception tablesNicholas Piggin
This halves the exception table size on 64-bit builds, and it allows build-time sorting of exception tables to work on relocated kernels. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Minor asm fixups and bits to keep the selftests working] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14powerpc: EX_TABLE macro for exception tablesNicholas Piggin
This macro is taken from s390, and allows more flexibility in changing exception table format. mpe: Put it in ppc_asm.h and only define one version using stringinfy_in_c(). Add some empty definitions and headers to keep the selftests happy. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14selftests/powerpc: Fail load_unaligned_zeropad on miscompareMichael Ellerman
If the result returned by load_unaligned_zeropad() doesn't match what we expect we should fail the test! Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14selftests/powerpc: Abort load_unaligned_zeropad on unhandled SEGVMichael Ellerman
If the load unaligned zeropad test takes a SEGV which can't be handled, we increment segv_error, print the offending NIP and then return without taking any further action. In almost all cases this means we'll just take the SEGV again, and loop eternally spamming the console. Instead just abort(), it's a fatal error in the test. The test harness will notice that the child died and print a nice message for us. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14selftests/powerpc: Add Anton's null_syscall benchmark to the selftestsAnton Blanchard
Pull in a version of Anton's null_syscall benchmark: http://ozlabs.org/~anton/junkcode/null_syscall.c Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Anton Blanchard <anton@au.ibm.com> Signed-off-by: Rui Teng <rui.teng@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-10-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Mostly simple overlapping changes. For example, David Ahern's adjacency list revamp in 'net-next' conflicted with an adjacency list traversal bug fix in 'net'. Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-24docs: fix locations of several documents that got movedMauro Carvalho Chehab
The previous patch renamed several files that are cross-referenced along the Kernel documentation. Adjust the links to point to the right places. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-10-22reuseport, bpf: add test case for bpf_get_numa_node_idDaniel Borkmann
The test case is very similar to reuseport_bpf_cpu, only that here we select socket members based on current numa node id. # numactl -H available: 2 nodes (0-1) node 0 cpus: 0 1 2 3 4 5 12 13 14 15 16 17 node 0 size: 128867 MB node 0 free: 120080 MB node 1 cpus: 6 7 8 9 10 11 18 19 20 21 22 23 node 1 size: 96765 MB node 1 free: 87504 MB node distances: node 0 1 0: 10 20 1: 20 10 # ./reuseport_bpf_numa ---- IPv4 UDP ---- send node 0, receive socket 0 send node 1, receive socket 1 send node 1, receive socket 1 send node 0, receive socket 0 ---- IPv6 UDP ---- send node 0, receive socket 0 send node 1, receive socket 1 send node 1, receive socket 1 send node 0, receive socket 0 ---- IPv4 TCP ---- send node 0, receive socket 0 send node 1, receive socket 1 send node 1, receive socket 1 send node 0, receive socket 0 ---- IPv6 TCP ---- send node 0, receive socket 0 send node 1, receive socket 1 send node 1, receive socket 1 send node 0, receive socket 0 SUCCESS Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-19tools/testing/nvdimm: dynamic label supportDan Williams
Update nfit_test infrastructure to enable labels for the dimm on the nfit_test.1 bus. This bus has a pmem region without aliased blk space, so it is a candidate for dynamically enabling label support by writing a namespace index block. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2016-10-19bpf: Detect identical PTR_TO_MAP_VALUE_OR_NULL registersThomas Graf
A BPF program is required to check the return register of a map_elem_lookup() call before accessing memory. The verifier keeps track of this by converting the type of the result register from PTR_TO_MAP_VALUE_OR_NULL to PTR_TO_MAP_VALUE after a conditional jump ensures safety. This check is currently exclusively performed for the result register 0. In the event the compiler reorders instructions, BPF_MOV64_REG instructions may be moved before the conditional jump which causes them to keep their type PTR_TO_MAP_VALUE_OR_NULL to which the verifier objects when the register is accessed: 0: (b7) r1 = 10 1: (7b) *(u64 *)(r10 -8) = r1 2: (bf) r2 = r10 3: (07) r2 += -8 4: (18) r1 = 0x59c00000 6: (85) call 1 7: (bf) r4 = r0 8: (15) if r0 == 0x0 goto pc+1 R0=map_value(ks=8,vs=8) R4=map_value_or_null(ks=8,vs=8) R10=fp 9: (7a) *(u64 *)(r4 +0) = 0 R4 invalid mem access 'map_value_or_null' This commit extends the verifier to keep track of all identical PTR_TO_MAP_VALUE_OR_NULL registers after a map_elem_lookup() by assigning them an ID and then marking them all when the conditional jump is observed. Signed-off-by: Thomas Graf <tgraf@suug.ch> Reviewed-by: Josef Bacik <jbacik@fb.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-18bpf: add initial suite for selftestsDaniel Borkmann
Add a start of a test suite for kernel selftests. This moves test_verifier and test_maps over to tools/testing/selftests/bpf/ along with various code improvements and also adds a script for invoking test_bpf module. The test suite can simply be run via selftest framework, f.e.: # cd tools/testing/selftests/bpf/ # make # make run_tests Both test_verifier and test_maps were kind of misplaced in samples/bpf/ directory and we were looking into adding them to selftests for a while now, so it can be picked up by kbuild bot et al and hopefully also get more exposure and thus new test case additions. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-14Merge tag 'linux-kselftest-4.9-rc1-update' of ↵Linus Torvalds
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 ...
2016-10-14Merge tag 'powerpc-4.9-2' of ↵Linus Torvalds
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 ...
2016-10-11Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge more updates from Andrew Morton: - a few block updates that fell in my lap - lib/ updates - checkpatch - autofs - ipc - a ton of misc other things * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits) mm: split gfp_mask and mapping flags into separate fields fs: use mapping_set_error instead of opencoded set_bit treewide: remove redundant #include <linux/kconfig.h> hung_task: allow hung_task_panic when hung_task_warnings is 0 kthread: add kerneldoc for kthread_create() kthread: better support freezable kthread workers kthread: allow to modify delayed kthread work kthread: allow to cancel kthread work kthread: initial support for delayed kthread work kthread: detect when a kthread work is used by more workers kthread: add kthread_destroy_worker() kthread: add kthread_create_worker*() kthread: allow to call __kthread_create_on_node() with va_list args kthread/smpboot: do not park in kthread_create_on_cpu() kthread: kthread worker API cleanup kthread: rename probe_kthread_data() to kthread_probe_data() scripts/tags.sh: enable code completion in VIM mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping kdump, vmcoreinfo: report memory sections virtual addresses ipc/sem.c: add cond_resched in exit_sme ...
2016-10-11treewide: remove redundant #include <linux/kconfig.h>Masahiro Yamada
Kernel source files need not include <linux/kconfig.h> explicitly because the top Makefile forces to include it with: -include $(srctree)/include/linux/kconfig.h This commit removes explicit includes except the following: * arch/s390/include/asm/facilities_src.h * tools/testing/radix-tree/linux/kernel.h These two are used for host programs. Link: http://lkml.kernel.org/r/1473656164-11929-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11radix-tree tests: properly initialize mutexRoss Zwisler
The pthread_mutex_t in regression1.c wasn't being initialized properly. Link: http://lkml.kernel.org/r/20160815194237.25967-4-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.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>
2016-10-11radix-tree tests: add iteration testRoss Zwisler
There are four cases I can see where we could end up with a NULL 'slot' in radix_tree_next_slot(). This unit test exercises all four of them, making sure that if in the future we have an unsafe path through radix_tree_next_slot(), we'll catch it. Here are details on the four cases: 1) radix_tree_iter_retry() via a non-tagged iteration like radix_tree_for_each_slot(). In this case we currently aren't seeing a bug because radix_tree_iter_retry() sets iter->next_index = iter->index; which means that in in the else case in radix_tree_next_slot(), 'count' is zero, so we skip over the while() loop and effectively just return NULL without ever dereferencing 'slot'. 2) radix_tree_iter_retry() via tagged iteration like radix_tree_for_each_tagged(). This case was giving us NULL pointer dereferences in testing, and was fixed with this commit: commit 3cb9185c6730 ("radix-tree: fix radix_tree_iter_retry() for tagged iterators.") This fix doesn't explicitly check for 'slot' being NULL, though, it works around the NULL pointer dereference by instead zeroing iter->tags in radix_tree_iter_retry(), which makes us bail out of the if() case in radix_tree_next_slot() before we dereference 'slot'. 3) radix_tree_iter_next() via via a non-tagged iteration like radix_tree_for_each_slot(). This currently happens in shmem_tag_pins() and shmem_partial_swap_usage(). As with non-tagged iteration, 'count' in the else case of radix_tree_next_slot() is zero, so we skip over the while() loop and effectively just return NULL without ever dereferencing 'slot'. 4) radix_tree_iter_next() via tagged iteration like radix_tree_for_each_tagged(). This happens in shmem_wait_for_pins(). radix_tree_iter_next() zeros out iter->tags, so we end up exiting radix_tree_next_slot() here: if (flags & RADIX_TREE_ITER_TAGGED) { void *canon = slot; iter->tags >>= 1; if (unlikely(!iter->tags)) return NULL; Link: http://lkml.kernel.org/r/20160815194237.25967-3-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.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>
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