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| * | | ktest: Use make -s kernelreleaseMichal Marek2014-11-21
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous tail -1 broke with commit 7ff525712acf ("kbuild: fake the "Entering directory ..." message more simply") Link: http://lkml.kernel.org/r/20141022194408.GA20989@pobox.suse.cz Reported-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | Merge tag 'ftracetest-3.19' of ↵Linus Torvalds2014-12-10
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftrace self-test updates from Steven Rostedt: "Updates for the ftrace self tests: - Added kprobes on ftrace testcase - Sort test cases - Add file to hold helper functions - Use logfile name supported by busybox's mktemp - Clear trace buffer after running kprobe test - Fix show descriptions when run on dash shell - Add --verbose option for showing echo output" * tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftracetest: Add --verbose option for showing echo output ftracetest: Fix to show descriptions on dash ftracetest: Add basic event tracing test cases ftracetest: Clear trace buffer after running kprobe testcases ftracetest: Use logfile name supported by busybox's mktemp ftracetest: Add a couple of ftrace test cases ftracetest: Add functions file that holds helper functions ftracetest: Sort testcases ftracetest: Add kprobes on ftrace testcase
| * | | ftracetest: Add --verbose option for showing echo outputMasami Hiramatsu2014-12-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add --verbose/-v option for showing echo output in testcases. This is good for checking the progress of testcases which take a longer time to run. To implement this feature, all the testcase failures are captured in ftracetest and send signal to set SIG_RESULT=FAIL. Link: http://lkml.kernel.org/r/20141204194123.7376.22964.stgit@localhost.localdomain Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Fix to show descriptions on dashMasami Hiramatsu2014-12-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ftracetest doesn't show testcase's descriptions when it is executed on dash. This fixes that to show the descriptions on dash correctly by passing it via a variable instead of directly passing the grep command output. Link: http://lkml.kernel.org/r/20141204194116.7376.78940.stgit@localhost.localdomain Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Add basic event tracing test casesNamhyung Kim2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds basic event tracing tests like enable/disable with top-level, subsystem-level and individual event files. # ./ftracetest === Ftrace unit tests === [1] Basic trace file check [PASS] [2] Basic trace clock test [PASS] [3] Basic event tracing check [PASS] [4] Basic test for tracers [PASS] [5] event tracing - enable/disable with top level files [PASS] [6] event tracing - enable/disable with subsystem level files [PASS] [7] event tracing - enable/disable with event level files [PASS] [8] ftrace - function graph filters [PASS] [9] ftrace - function profiler with function tracing [PASS] [10] ftrace - function graph filters with stack tracer [PASS] [11] Kretprobe dynamic event with arguments [PASS] [12] Kprobe dynamic event - busy event check [PASS] [13] Kprobe dynamic event with arguments [PASS] [14] Kprobe dynamic event - adding and removing [PASS] # of passed: 14 # 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/1415239470-28705-3-git-send-email-namhyung@kernel.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Clear trace buffer after running kprobe testcasesNamhyung Kim2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kprobe testcases create, use and delete dynamic events during the test but didn't clear the trace buffer so it'll leave the result after it finishes. # ./ftracetest ... # cat trace # tracer: nop # # entries-in-buffer/entries-written: 2/2 #P:12 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | ftracetest-26474 [009] d..1 79417.143782: Unknown type 1099 ftracetest-26498 [009] d..1 79417.208034: Unknown type 1101 Link: http://lkml.kernel.org/r/1415239470-28705-2-git-send-email-namhyung@kernel.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Use logfile name supported by busybox's mktempNamhyung Kim2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When I run the ftracetest in a busybox docker container, I saw following error. Make the logfile template to comply with busybox's mktemp. It also keep the logfiles under the logs directory. # /linux/tools/testing/selftests/ftrace/ftracetest === Ftrace unit tests === mktemp: unrecognized option `--tmpdir=/linux/tools/testing/selftests/ftrace/logs/20141106-003624/' BusyBox v1.22.1 (2014-05-22 23:22:11 UTC) multi-call binary. Usage: mktemp [-dt] [-p DIR] [TEMPLATE] Create a temporary file with name based on TEMPLATE and print its name. TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX). Without TEMPLATE, -t tmp.XXXXXX is assumed. -d Make directory, not file -q Fail silently on errors -t Prepend base directory name to TEMPLATE -p DIR Use DIR as a base directory (implies -t) -u Do not create anything; print a name Base directory is: -p DIR, else $TMPDIR, else /tmp [1] Basic trace file check/linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory /linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory [FAIL] Link: http://lkml.kernel.org/r/1415239470-28705-1-git-send-email-namhyung@kernel.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Add a couple of ftrace test casesSteven Rostedt (Red Hat)2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added three test cases to get the feel of adding tests to ftracetest. The three cases are: function profiling test, to make sure function profiling still works with function tracing (was a regression) function graph filter test to make sure that function graph filtering works. function graph filter with stack tracing test to make sure that the function graph filter does filter and also continues to filter when another function tracer is running (like the stack tracer) Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org Link: http://lkml.kernel.org/r/20141104153028.602754370@goodmis.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Add functions file that holds helper functionsSteven Rostedt (Red Hat)2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Created the file tools/testing/ftrace/test.d/functions that will hold helper functions. Current helper functions include: Add clear_trace() helper to reset the trace file Used as a descriptive name to show that "echo > trace" is clearing the trace file. Add disable/enable_tracing() helper calls Add calls that disable and enable tracing respectively by echoing 0 or 1 into tracing_on. Add helper reset_tracer() function Add a helper function reset_tracer() that will clear the current_tracer (echo nop > current_tracer). Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org Link: http://lkml.kernel.org/r/20141104153028.465517119@goodmis.org Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Sort testcasesHeiko Carstens2014-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure the order of the executed testcases is always the same. Link: http://lkml.kernel.org/p/1413802323-5297-3-git-send-email-heiko.carstens@de.ibm.com Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | ftracetest: Add kprobes on ftrace testcaseHeiko Carstens2014-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a kprobes on ftrace testcase. The testcase verifies that - enabling and disabling function tracing works on a function which already contains a dynamic kprobe - adding and removing a dynamic kprobe works on a function which is already enabled for function tracing Link: http://lkml.kernel.org/p/1413802323-5297-2-git-send-email-heiko.carstens@de.ibm.com Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | | Merge branch 'rcu/next' of ↵Ingo Molnar2014-11-20
|\ \ \ \ | |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU updates from Paul E. McKenney: - Streamline RCU's use of per-CPU variables, shifting from "cpu" arguments to functions to "this_"-style per-CPU variable accessors. - Signal-handling RCU updates. - Real-time updates. - Torture-test updates. - Miscellaneous fixes. - Documentation updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
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| *---. \ \ Merge branches 'torture.2014.11.03a', 'cpu.2014.11.03a', 'doc.2014.11.13a', ↵Paul E. McKenney2014-11-13
| |\ \ \ \ \ | | | |_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'fixes.2014.11.13a', 'signal.2014.10.29a' and 'rt.2014.10.29a' into HEAD cpu.2014.11.03a: Changes for per-CPU variables. doc.2014.11.13a: Documentation updates. fixes.2014.11.13a: Miscellaneous fixes. signal.2014.10.29a: Signal changes. rt.2014.10.29a: Real-time changes. torture.2014.11.03a: torture-test changes.
| | | | * | rcu: Remove redundant TREE_PREEMPT_RCU config optionPranith Kumar2014-10-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PREEMPT_RCU and TREE_PREEMPT_RCU serve the same function after TINY_PREEMPT_RCU has been removed. This patch removes TREE_PREEMPT_RCU and uses PREEMPT_RCU config option in its place. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | | | * | rcu: Unify boost and kthread prioritiesClark Williams2014-10-29
| | | |/ / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename CONFIG_RCU_BOOST_PRIO to CONFIG_RCU_KTHREAD_PRIO and use this value for both the per-CPU kthreads (rcuc/N) and the rcu boosting threads (rcub/n). Also, create the module_parameter rcutree.kthread_prio to be used on the kernel command line at boot to set a new value (rcutree.kthread_prio=N). Signed-off-by: Clark Williams <clark.williams@gmail.com> [ paulmck: Ported to rcu/dev, applied Paul Bolle and Peter Zijlstra feedback. ] Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | | * | rcu: Remove CONFIG_RCU_CPU_STALL_VERBOSEPaul E. McKenney2014-10-28
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CONFIG_RCU_CPU_STALL_VERBOSE Kconfig parameter causes preemptible RCU's CPU stall warnings to dump out any preempted tasks that are blocking the current RCU grace period. This information is useful, and the default has been CONFIG_RCU_CPU_STALL_VERBOSE=y for some years. It is therefore time for this commit to remove this Kconfig parameter, so that future kernel builds will always act as if CONFIG_RCU_CPU_STALL_VERBOSE=y. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * | | rcutorture: Remove obsolete kversion param in kvm.shPranith Kumar2014-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have removed configs based on kernel version, we can also remove the kversion parameter in kvm.sh. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * | | rcutorture: Remove stale test configurationsPranith Kumar2014-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove rcutorture configuration files which are no longer necessary. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * | | rcutorture: Enable RCU self test in configsPranith Kumar2014-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add config and boot parameters to enable the self tests in rcutorture testing. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * | | torture: Run Linux-kernel binary out of results directoryPaul E. McKenney2014-11-03
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rcutorture scripts create a qemu-cmd script containing the actual qemu command. However, this command references the build directory, which will be overwritten by later builds. This commit therefore runs the kernel out of the results directory so that less hand-editing is required to re-run a previous test. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2014-11-13
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) sunhme driver lacks DMA mapping error checks, based upon a report by Meelis Roos. 2) Fix memory leak in mvpp2 driver, from Sudip Mukherjee. 3) DMA memory allocation sizes are wrong in systemport ethernet driver, fix from Florian Fainelli. 4) Fix use after free in mac80211 defragmentation code, from Johannes Berg. 5) Some networking uapi headers missing from Kbuild file, from Stephen Hemminger. 6) TUN driver gets csum_start offset wrong when VLAN accel is enabled, and macvtap has a similar bug, from Herbert Xu. 7) Adjust several tunneling drivers to set dev->iflink after registry, because registry sets that to -1 overwriting whatever we did. From Steffen Klassert. 8) Geneve forgets to set inner tunneling type, causing GSO segmentation to fail on some NICs. From Jesse Gross. 9) Fix several locking bugs in stmmac driver, from Fabrice Gasnier and Giuseppe CAVALLARO. 10) Fix spurious timeouts with NewReno on low traffic connections, from Marcelo Leitner. 11) Fix descriptor updates in enic driver, from Govindarajulu Varadarajan. 12) PPP calls bpf_prog_create() with locks held, which isn't kosher. Fix from Takashi Iwai. 13) Fix NULL deref in SCTP with malformed INIT packets, from Daniel Borkmann. 14) psock_fanout selftest accesses past the end of the mmap ring, fix from Shuah Khan. 15) Fix PTP timestamping for VLAN packets, from Richard Cochran. 16) netlink_unbind() calls in netlink pass wrong initial argument, from Hiroaki SHIMODA. 17) vxlan socket reuse accidently reuses a socket when the address family is different, so we have to explicitly check this, from Marcelo Lietner. 18) Fix missing include in nft_reject_bridge.c breaking the build on ppc and other architectures, from Guenter Roeck. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (75 commits) vxlan: Do not reuse sockets for a different address family smsc911x: power-up phydev before doing a software reset. lib: rhashtable - Remove weird non-ASCII characters from comments net/smsc911x: Fix delays in the PHY enable/disable routines net/smsc911x: Fix rare soft reset timeout issue due to PHY power-down mode netlink: Properly unbind in error conditions. net: ptp: fix time stamp matching logic for VLAN packets. cxgb4 : dcb open-lldp interop fixes selftests/net: psock_fanout seg faults in sock_fanout_read_ring() net: bcmgenet: apply MII configuration in bcmgenet_open() net: bcmgenet: connect and disconnect from the PHY state machine net: qualcomm: Fix dependency ixgbe: phy: fix uninitialized status in ixgbe_setup_phy_link_tnx net: phy: Correctly handle MII ioctl which changes autonegotiation. ipv6: fix IPV6_PKTINFO with v4 mapped net: sctp: fix memory leak in auth key management net: sctp: fix NULL pointer dereference in af->from_addr_param on malformed packet net: ppp: Don't call bpf_prog_create() in ppp_lock net/mlx4_en: Advertize encapsulation offloads features only when VXLAN tunnel is set cxgb4 : Fix bug in DCB app deletion ...
| * | | selftests/net: psock_fanout seg faults in sock_fanout_read_ring()Shuah Khan2014-11-11
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The while loop in sock_fanout_read_ring() checks mmap region bounds after access, causing it to segfault. Fix it to check count before accessing header->tp_status. This problem can be reproduced consistently when the test in run as follows: make -C tools/testing/selftests TARGETS=net run_tests or make run_tests from tools/testing/selftests or make run_test from tools/testing/selftests/net Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge tag 'ftracetest-3.18-rc1' of ↵Linus Torvalds2014-11-04
|\ \ \ | |/ / |/| / | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftracetest fix from Steven Rostedt: "Running the ftracetests on a machine that had the debugfs file system mounted in two locations caused the ftracetests to fail. This is because the ftracetests script does a grep of the /proc/mounts file to find where the debugfs file system is mounted. If it is mounted twice, then the grep returns two lines instead of just one. This causes the ftracetests to get confused and fail. Use "head -1" to only return the first mount point for debugfs" * tag 'ftracetest-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftracetest: Take the first debugfs mount found
| * ftracetest: Take the first debugfs mount foundSteven Rostedt (Red Hat)2014-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Running ftracetests on a box that mounted debugfs in two locations made the ftracetests fail. This is because the tests uses a grep of debugfs from the /proc/mounts file to find the debugfs mount point, and then appends "/tracing" to that string to get the tracing directory. If the debugfs directory is mounted twice, then that grep will return two answers and appending "/tracing" to a string with two lines will not work. Use "head -1" to only take the first mount point found. Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds2014-10-13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * \ Merge branch 'rcu/next' of ↵Ingo Molnar2014-10-09
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | locktorture: Support rwlocksDavidlohr Bueso2014-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | Merge branch 'rcu/next' of ↵Ingo Molnar2014-09-23
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | rcutorture: Rename rcutorture_runnable parameterPaul E. McKenney2014-09-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | locktorture: Add test scenario for rwsem_lockPaul E. McKenney2014-09-16
| | | | | | | | | | | | | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | * | locktorture: Add test scenario for mutex_lockPaul E. McKenney2014-09-16
| | | | | | | | | | | | | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | * | locktorture: Make torture scripting account for new _runnable namePaul E. McKenney2014-09-16
| | | | | | | | | | | | | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| | * | Merge branch 'rcu-tasks.2014.09.10a' into HEADPaul E. McKenney2014-09-16
| | |\ \ | | | | | | | | | | | | | | | rcu-tasks.2014.09.10a: Add RCU-tasks flavor of RCU.
| | | * | rcutorture: Add RCU-tasks tests to default rcutorture listPaul E. McKenney2014-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | | * | rcutorture: Add RCU-tasks test casesPaul E. McKenney2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | torture: Check for nul bytes in console outputPaul E. McKenney2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | torture: Print PID in hung-kernel diagnostic messagePaul E. McKenney2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
| | * | | rcutorture: Specify CONFIG_CPUMASK_OFFSTACK=y for TREE07Paul E. McKenney2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | rcutorture: Specify MAXSMP=y for TREE01Paul E. McKenney2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | rcutorture: Test partial nohz_full= configurationPaul E. McKenney2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | rcu: Add step to initrd documentationPaul E. McKenney2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | rcutorture: Set executable bit and drop bash from UsagePranith Kumar2014-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | rcutorture: Use bash shell for all the test scriptsPranith Kumar2014-09-07
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | | Merge tag 'kselftest-3.18-updates-1' of ↵Linus Torvalds2014-10-12
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * | | | selftests/memfd: Run test on all architecturesPranith Kumar2014-09-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | | memfd_test: Add missing argument to printf()Pranith Kumar2014-09-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | | memfd_test: Make it work on 32-bit systemsPranith Kumar2014-09-04
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | | Merge tag 'ftracetest-3.18' of ↵Linus Torvalds2014-10-12
|\ \ \ \ | | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * | | tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup testMasami Hiramatsu2014-10-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | ftracetest: Add POSIX.3 standard and XFAIL result codesMasami Hiramatsu2014-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
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