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2016-06-21perf hists: Rename __hists__add_entry to hists__add_entryJiri Olsa5-38/+28
There's no reason we should suffer the '__' prefix for the base global function. Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-21perf script: Fix documentation of '-f' when it should be '-F'Adrian Hunter1-10/+10
The documentation for perf script mixes up '-f' and '-F'. Fix it. Signed-off-by: Adrian Hunter <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Link: http://lkml.kernel.org/r/None Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-21kbuild: List libelf-devel as an alternativeJean Delvare1-1/+1
On openSUSE, the libelf development files are in package libelf-devel. Signed-off-by: Jean Delvare <[email protected]> Acked-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Michal Marek <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-21selftests/powerpc: Load Monitor Register TestsJack Miller6-1/+227
Adds two tests. One is a simple test to ensure that the new registers LMRR and LMSER are properly maintained. The other actually uses the existing EBB test infrastructure to test that LMRR and LMSER behave as documented. Signed-off-by: Jack Miller <[email protected]> Signed-off-by: Michael Neuling <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2016-06-20Merge tag 'trace-v4.7-rc3' of ↵Linus Torvalds3-15/+12
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "Two fixes for the tracing system: - When trace_printk() is used with a non constant format descriptor, it adds a NULL pointer into the trace format section, and the code isn't prepared to deal with it. This bug appeared by a change that was added in v3.5. - The ftracetest (selftests section) can't handle testing histograms when histograms are not configured. Currently it shows that they fail the test, when they should state that they are unsupported. This bug was added in the 4.7 merge window with the addition of the historgram code" * tag 'trace-v4.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftracetest: Fix hist unsupported result in hist selftests tracing: Handle NULL formats in hold_module_trace_bprintk_format()
2016-06-20Merge 4.7-rc4 into staging-nextGreg Kroah-Hartman8-18/+132
We want the fixes in here, and we can resolve a merge issue in drivers/iio/industrialio-trigger.c Signed-off-by: Greg Kroah-Hartman <[email protected]>
2016-06-20ftracetest: Fix hist unsupported result in hist selftestsSteven Rostedt (Red Hat)3-15/+12
When histograms are not configured in the kernel, the ftracetest histogram selftests should return "unsupported" and not "Failed". To detect this, the test scripts have: FEATURE=`grep hist events/sched/sched_process_fork/trigger` if [ -z "$FEATURE" ]; then echo "hist trigger is not supported" exit_unsupported fi The problem is that '-e' is in effect and any error will cause the program to terminate. The grep for 'hist' fails, because it is not compiled it (thus unsupported), but because grep has an error code for failing to find the string, it causes the program to terminate, and is marked as a failed test. Namhyung Kim recommended to test for the "hist" file located in events/sched/sched_process_fork/hist instead, as it is more inline with the other checks. As the hist file is only created if the histogram feature is enabled, that is a valid check. Link: http://lkml.kernel.org/r/[email protected] Suggested-by: Namhyung Kim <[email protected]> Acked-by: Namhyung Kim <[email protected]> Acked-by: Masami Hiramatsu <[email protected]> Fixes: 76929ab51f0ee ("kselftests/ftrace: Add hist trigger testcases") Signed-off-by: Steven Rostedt <[email protected]>
2016-06-17tools/testing/nvdimm: add pfn device dependencyDan Williams1-0/+1
Fail building nfit_test.ko when the configuration is missing pfn device support. Reported-by: Megha Dey <[email protected]> Signed-off-by: Dan Williams <[email protected]>
2016-06-15Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds4-3/+78
Pull virtio docs and tests from Michael Tsirkin: "This merely has some documentation and a new test, seems safe to merge" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: tools/virtio: add noring tool tools/virtio/ringtest: fix run-on-all.sh to work without /dev/cpu tools/virtio/ringtest: add usage example to README MAINTAINERS: Add file patterns for virtio device tree bindings
2016-06-15ptr_ring: ring testMichael S. Tsirkin2-1/+196
Add ringtest based unit test for ptr ring. Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2016-06-15selftests/exec: Makefile is a run-time dependency, add it to the install listYannick Brosseau1-1/+2
The execveat test try to exec the Makefile file and expect an EACCES results. When running the test in the installed destination it would fail with ENOENT since the file is not there. Add Makefile to the TEST_FILES list so it's copied at install time. Signed-off-by: Yannick Brosseau <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2016-06-15perf probe: Add --cache option to cache the probe definitionsMasami Hiramatsu4-0/+15
Add --cache option to cache the probe definitions. This just saves the result of the dwarf analysis to probe cache. Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: Hemant Kumar <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20160615032840.31330.44412.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf probe: Introduce perf_cache interfacesMasami Hiramatsu2-0/+351
Introduce perf_cache object and interfaces to create, add entries, commit, and delete the object. perf_cache represents a file for the cached "perf probe" definitions on one binary file or vmlinux which has its own build id. The probe cache file is located under the build-id cache directory of the target binary, as below; <perf-debug-dir>/.build-id/<BU>/<ILDID>/probe Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: Hemant Kumar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20160615032830.31330.84998.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf hists: Replace perf_evsel arg perf_hpp_fmt's width callbackJiri Olsa7-14/+15
Replacing perf_evsel arg perf_hpp_fmt's width callback with hists object. This will be helpful in future for non evsel related hist browsers. Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf hists: Replace perf_evsel arg perf_hpp_fmt's header callbackJiri Olsa7-14/+14
Replacing perf_evsel arg perf_hpp_fmt's header callback with hists object. None of the actual callbacks actually use evsel object, also this will be helpful in future for non evsel related hist browsers. Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf stdio: Add use_callchain parameter to hists__fprintfJiri Olsa5-8/+13
It will be convenient in following patches to display hists entries without callchains even if they are defined. Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf stdio: Do not pass hists in hist_entry__fprintfJiri Olsa1-2/+2
There's no need, we have the hists pointer in struct hist_entry. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf stdio: Separate standard headers outputJiri Olsa1-14/+24
Introducing hists__fprintf_standard_headers function to separate standard headers display code. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf stdio: Separate hierarchy headers outputJiri Olsa1-8/+18
Introducing hists__fprintf_hierarchy_headers function to separate hierarchy headers display code. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf stdio: Separate headers outputJiri Olsa1-29/+30
Introducing hists__fprintf_headers function to separate the code that displays headers. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf tui: Separate hierarchy and standard headers outputJiri Olsa1-7/+24
It will be useful for future changes that enhance headers with multiple lines and span columns, which don't affect hierarchy headers. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf tools: Fix Data Object sort entry width indexJiri Olsa1-1/+1
Putting correct HISTC_MEM_DADDR_DSO index to Data Object sort entry. Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf mem: Add --ldlat optionJiri Olsa4-1/+21
Adding --ldlat option to specify desired latency for loads event. Specify 50 as loads event latency: $ perf mem record -e ldlat-loads -v --ldlat 50 true calling: record -W -d -e cpu/mem-loads,ldlat=50/P true Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15perf unwind: Fix compile error for static cross buildHe Kuang1-0/+3
Build failure for static cross-compiling on aarch64, with libunwind-x86 provided: $ file ./libunwind_for_x86_on_aarch64/lib/libunwind-x86.so.8.0.1 libunwind-x86.so.8.0.1: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, not stripped $ make LDFLAGS=-static LIBUNWIND_DIR=./libunwind_for_x86_on_aarch64 ARCH=aarch64 CROSS_COMPILE=aarch64-buildroot-linux-gnu- ~/libperf.a(libperf-in.o): In function `find_proc_info': :(.text+0xae4ac): undefined reference to `_Ux86_dwarf_search_unwind_table' ~/libperf.a(libperf-in.o): In function `_unwind__prepare_access': :(.text+0xaedd0): undefined reference to `_Ux86_create_addr_space' :(.text+0xaee24): undefined reference to `_Ux86_set_caching_policy' ~/libperf.a(libperf-in.o): In function `_unwind__flush_access': :(.text+0xaee98): undefined reference to `_Ux86_flush_cache' ~/libperf.a(libperf-in.o): In function `_unwind__finish_access': :(.text+0xaef08): undefined reference to `_Ux86_destroy_addr_space' ~/libperf.a(libperf-in.o): In function `get_entries': :(.text+0xaf148): undefined reference to `_Ux86_init_remote' :(.text+0xaf184): undefined reference to `_Ux86_get_reg' :(.text+0xaf1a4): undefined reference to `_Ux86_step' collect2: error: ld returned 1 exit status Makefile.perf:350: recipe for target '~/perf' failed make[1]: *** [~/perf] Error 1 Makefile:68: recipe for target 'all' failed make: *** [all] Error 2 This is because the remote libunwind library detected is not appended to EXTLIBS variable, which will be included between 'start-group' and 'end-group' when linking. The existing variable LIBUNWIND_LIBS is assigned to libs for local unwind, this patch introduces a new variable EXTLIBS_LIBUNWIND for storing remote libunwind libraries instead. Signed-off-by: He Kuang <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-15tools/gpio: add the gpio-event-mon toolLinus Walleij2-2/+195
The gpio-event-mon is used from userspace as an example of how to monitor GPIO line events. It will latch on to a certain GPIO line on a certain gpiochip and print timestamped events as they arrive. Example output: $ gpio-event-mon -n gpiochip2 -o 0 -r -f Monitoring line 0 on gpiochip2 Initial line value: 1 GPIO EVENT 946685798487609863: falling edge GPIO EVENT 946685798732482910: rising edge GPIO EVENT 946685799115997314: falling edge GPIO EVENT 946685799381469726: rising edge Signed-off-by: Linus Walleij <[email protected]>
2016-06-15tools/gpio: add the gpio-hammer toolLinus Walleij2-2/+192
The gpio-hammer is used from userspace as an example of how to retrieve a GPIO handle for one or several GPIO lines and hammer the outputs from low to high and back again. It will pulse the selected lines once per second for a specified number of times or indefinitely if no loop count is supplied. Example output: $ gpio-hammer -n gpiochip0 -o5 -o6 -o7 Hammer lines [5, 6, 7] on gpiochip0, initial states: [1, 1, 1] [-] [5: 0, 6: 0, 7: 0] Tested-by: Michael Welling <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2016-06-14torture: Inflict default jitterPaul E. McKenney1-1/+1
This commit enables jitter by default. It may be manually disabled by passing "--jitter 0" to kvm.sh. Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14rcutorture: Drop "-soundhw pcspkr" from x86 boot argumentsPaul E. McKenney1-1/+0
Because recent testing shows that "-soundhw pcspkr" is no longer required in the kernel boot arguments, this commit drops this qemu argument. Reported-by: Josh Triplett <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14rcutorture: Don't specify the cpu type of QEMU on PPCBoqun Feng1-1/+1
Do not restrict the cpu type to POWER7 for QEMU as we have POWER8 now. Signed-off-by: Boqun Feng <[email protected]> Reviewed-by: Josh Triplett <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14rcutorture: Make -soundhw a x86 specific optionBoqun Feng2-4/+5
The option "-soundhw pcspk" gives me a error on PPC as follow: qemu-system-ppc64: ISA bus not available for pcspk This means this option doesn't work on ppc by default. So simply make this an x86-specific option via identify_qemu_args(). Signed-off-by: Boqun Feng <[email protected]> Reviewed-by: Josh Triplett <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14rcutorture: Use vmlinux as the fallback kernel imageBoqun Feng2-8/+7
The vmlinux image is available for all the architectures, and suitable for running a KVM guest by QEMU, besides, we used to copy the vmlinux to $resdir anyway. Therefore it makes sense to use it as the fallback kernel image for rcutorture KVM tests. This patch makes identify_boot_image() return vmlinux if ${TORTURE_BOOT_IMAGE} is not set on non-x86 architectures, also fixes several places that hard-code "bzImage" as $KERNEL. This also fixes a problem that PPC doesn't have a bzImage file as build results. Signed-off-by: Boqun Feng <[email protected]> Reviewed-by: Josh Triplett <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14rcutorture/doc: Create initrd using dracutBoqun Feng1-0/+22
Using dracut is another way to get an initramfs for KVM-based RCU torture tests, which is more flexible than using the host's initramfs image, because modules and binaries may be added or removed via dracut command options. So add an example in the document, in case that there are some situations where host's initramfs couldn't be used. Signed-off-by: Boqun Feng <[email protected]> Reviewed-by: Josh Triplett <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14torture: Add starvation events to error summaryPaul E. McKenney1-1/+6
This commit adds a string of the form "Starves: 10" to the summary line for error conditions found in the console output. Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14torture: Forgive lengthy trace dumps and preemptionPaul E. McKenney1-2/+19
This commit avoids killing qemu if a trace dump is making progress or if console log output is continuing and the console log timestamp does not exceed the total plus grace period. Signed-off-by: Paul E. McKenney <[email protected]>
2016-06-14seccomp: add tests for ptrace holeKees Cook1-11/+165
One problem with seccomp was that ptrace could be used to change a syscall after seccomp filtering had completed. This was a well documented limitation, and it was recommended to block ptrace when defining a filter to avoid this problem. This can be quite a limitation for containers or other places where ptrace is desired even under seccomp filters. This adds tests for both SECCOMP_RET_TRACE and PTRACE_SYSCALL manipulations. Signed-off-by: Kees Cook <[email protected]> Cc: Andy Lutomirski <[email protected]>
2016-06-14perf probe: Uncomment and export synthesize_perf_probe_point()Masami Hiramatsu2-17/+23
Uncomment and export synthesize_perf_probe_point() which had once introduced but has been disabled for a long time. This renews the code and re-enable it. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: Hemant Kumar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20160608092949.3116.21958.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-14perf probe: Add perf_probe_event__copy()Masami Hiramatsu2-3/+76
Add perf_probe_event__copy() to copy perf_probe_event data structure and sub data structures under given source perf_probe_event. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: Hemant Kumar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20160608092940.3116.18034.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-14perf buildid: Rename and export build_id_cache__cachedir()Masami Hiramatsu2-7/+7
Rename and export build_id_cache__cachedir() for retrieving use of the path of cache directory for given build_id. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: Hemant Kumar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20160608092930.3116.67575.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-14perf probe: Fix to add NULL check for strndupMasami Hiramatsu1-0/+4
Fix to add a NULL check for strndup when parsing probe trace command. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: Hemant Kumar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20160608092920.3116.63319.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-14perf tools: Fix rm_rf() to handle non-regular files correctlyMasami Hiramatsu1-8/+5
Fix rm_rf() to handle non-regular files correctly. This fix includes two changes; - Fix to use lstat(3) instead of stat(3) since if the target file is a symbolic link, rm_rf() should unlink the symbolic link itself, not the file which pointed by the symlink. - Fix to unlink non-regular files (except for directory), including symlink. Even though the first one fixes to stat symlink itself, without second fix, it still failed because the symlink is not a regular file. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ananth N Mavinakayanahalli <[email protected]> Cc: Brendan Gregg <[email protected]> Cc: Hemant Kumar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20160608092911.3116.90929.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-14perf config: Handle NULL at perf_config_set__delete()Taeung Song1-0/+3
perf_config_set__delete() purge and free the config set that contains all config key-value pairs. But if the config set (i.e. 'set' variable at the function) is NULL, this is wrong so handle it. Signed-off-by: Taeung Song <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-06-14x86/mpx, selftests: Add MPX self testDave Hansen6-1/+2230
I've had this code for a while, but never submitted it upstream. Now that Skylake hardware is out in the wild, folks can actually run this for real. It tests the following: 1. The MPX hardware is enabled by the kernel and doing what it is supposed to 2. The MPX management code is present and enabled in the kernel 3. MPX Signal handling 4. The MPX bounds table population code (on-demand population) 5. The MPX bounds table unmapping code (kernel-initiated freeing when unused) This has also caught bugs in the XSAVE code because MPX state is saved/restored with XSAVE. I'm submitting it now because it would have caught the recent issues with the compat_siginfo code not being properly augmented when new siginfo state is added. Signed-off-by: Dave Hansen <[email protected]> Cc: Al Viro <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Brian Gerst <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Shuah Khan <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2016-06-14Merge branch 'linus' into perf/core, to pick up fixes before merging new changesIngo Molnar1-5/+5
Signed-off-by: Ingo Molnar <[email protected]>
2016-06-11iio: generic_buffer: Fix --trigger-num optionCrestez Dan Leonard1-2/+2
Initialize trig_num to -1 and handle trig_num=0 as a valid id. Fixes: 7c7e9dad (iio: iio_generic_buffer: Add --trigger-num option) Signed-off-by: Crestez Dan Leonard <[email protected]> Signed-off-by: Jonathan Cameron <[email protected]>
2016-06-10Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds3-10/+49
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "A handful of tooling fixes, two PMU driver fixes and a cleanup of redundant code that addresses a security analyzer false positive" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Remove a redundant check perf/x86/intel/uncore: Remove SBOX support for Broadwell server perf ctf: Convert invalid chars in a string before set value perf record: Fix crash when kptr is restricted perf symbols: Check kptr_restrict for root perf/x86/intel/rapl: Fix pmus free during cleanup
2016-06-09Merge tag 'iio-for-4.8a' of ↵Greg Kroah-Hartman2-83/+199
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: First round of IIO new device support, features and cleanups for the 4.8 cycle. New device support * ads1015 - add ads1115 support * bma220 accelerometer - new driver - triggered buffer support. * bmc150 - add bmm150 support. * bmp280 - bme280 support with addition of humidity channel. * max5487 potentiometer - new driver * MMA7660FC accelerometer. - New driver * st-pressure - support for the lps22hb * loop trigger. - This one is *nasty* but we have real applications (parrot drones) where it is useful. The trigger basically spins as hard as it can firing off a new trigger each time all triggered devices come back to say they are done. It doesn't hang a machine even when doing it on a dummy driver. A lot nicer than having this implemented within lots of device drivers anyway. Core stuff * Add support to create IIO devices via configfs (similar to we did for triggers a while back) + docs. * New channel types - IIO_ELECTRICAL_CONDUCTIVITY * Couple of MAINTAINERS patches to list the device tree bindings. * Make trigger ops structure non optional (comment fix). It hasn't been for an awful long time, but that's not what the description said. New features * ak8975 - support adapters that are limited to byte data only by allowing the emulated block read i2c function that was recently introduced. * atlas-ph - support atlas-ec (electrical conductivity sensor) * bmi160 - add available frequency and scale attributes to make the driver more user friendly (and avoid having to read the datasheet to know what will work). * dummy - move creation to configfs interface. It's not real hardware so we are not that worried about the ABI breakage ;) * mma8452 - oversampling ration support * nau7802 - expose available gains to make life easier for userspace. * st-sensors - allow use of emulation for SMBus block reads as all the st parts support it. * ti-ads1015 - list datasheet names to allow their use by inkernel consumers. * Various module alias additions to help auto probing. Drop one redundant one as well. Cleanups * ad7266, ad7476, ad7887, ad7923, ad799x - use direct mode claim function rather than open coding it during sensor read (prevents switching on buffers mid read). * ad7793, ad7791 - use direct mode claim to prevent frequency changes when buffers running. * afe440x - These are ABI breaking but the driver requires custom userspace code to do anything useful anyway and that is still being written and under control of TI. Ultimately we may have other libraries to do pulse oximetry with these devices but we aren't aware of any yet. - kernel-doc format fixes - drop ifdef fun around of_match_ptr - it's not worth the mess to save a tiny amount of space. - drop some unnecessary register initializations. - drop the weird locked gain modes as they gain us nothing (can just set all gains separately). - remove handling of offset attributes seeing as no channels actually have them (oops) - Drop the LED3 input channel as it's an alias for ALED2. - *big one* remove channel names - an experiment that turned out to not make sense - see patch for details. - use regmap fields to clean up code. - tie the tia gain stages to appropriate channels in the ABI as that is what they really effect. Same with the LED currents. - cleanout some unused defines and fix a missnamed one. * atlas-ph - reorganise to allow support of other similar parts. * bmc150 - document supported chips in kconfig help. * jsa1212 - drop an unneeded i2c functionality check for functionality the driver doesn't use. * mxs-lradc - simply touch screen registration code. - remove the touch screen unregister as all devm based now. - disable only those channels that are masked in hardware stop (others are already dealt with elsewhere) * st-sensors - unexport st_sensors_get_buffer_element as nothing outside the st-sensors core driver uses it. - fix handling of failure to start up regulators. * tpl0102 - drop an i2c functionality test for features that aren't needed. * ti-am335x - use variable name rather than type in sizeof for clarity. - use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit. Tools * Add install / uninstall to makefile. Someone cares, so presumably some people will find it useful! * generic_buffer - rename to iio_generic_buffer to line up with other tools. - handle cleanup when receiving signals - Add a --device-num option and a --trigger-num option rather than relying on naming which doesn't work if you have two of the same part.
2016-06-08Merge tag 'perf-core-for-mingo-20160607' of ↵Ingo Molnar22-812/+1056
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: User visible changes: - Support cross unwinding, i.e. collecting '--call-graph dwarf' perf.data files in one machine and then doing analysis in another machine of a different hardware architecture. This enables, for instance, to do: perf record -a --call-graph dwarf on a x86-32 or aarch64 system and then do 'perf report' on it on a x86_64 workstation. (He Kuang) - Fix crash in build_id_cache__kallsyms_path(), recent regression (Wang Nan) Infrastructure changes: - Make tools/lib/bpf use the IS_ERR return facility consistently and also stop using the _get_ term for non-reference count methods (Arnaldo Carvalho de Melo) - 'perf config' refactorings (Taeung Song) Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2016-06-08Merge tag 'perf-core-for-mingo-20160606' of ↵Ingo Molnar16-46/+441
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: User visible changes: - Tooling support for TopDown counters, recently added to the kernel (Andi Kleen) - Show call graphs in 'perf script' when 1st event doesn't have it but some other has (He Kuang) - Fix terminal cleanup when handling invalid .perfconfig files in 'perf top' (Taeung Song) Build fixes: - Respect CROSS_COMPILE for the linker in libapi (Lucas Stach) Infrastructure changes: - Fix perf_evlist__alloc_mmap() failure path (Wang Nan) - Provide way to extract integer value from format_field (Arnaldo Carvalho de Melo) Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2016-06-08Merge branch 'linus' into perf/core, to refresh the branchIngo Molnar119-1397/+5561
Signed-off-by: Ingo Molnar <[email protected]>
2016-06-07perf callchain: Support aarch64 cross-platformHe Kuang5-1/+55
Support aarch64 cross platform callchain unwind. Signed-off-by: He Kuang <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: David Ahern <[email protected]> Cc: Ekaterina Tumanova <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Kan Liang <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Sukadev Bhattiprolu <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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