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2016-06-22perf hists browser: Move horizontal scroll init to new()Jiri Olsa
Moving horizontal scroll init to initialization function as already intended. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1466459899-1166-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-22perf hists browser: Introduce struct hist_browser title callbackJiri Olsa
We can now setup title callback for hist_browser, which will be useful in following changes to create customized hist_browsers. This also separates struct perf_evsel dependency out of hist_browser basic code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1466459899-1166-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-22perf hists browser: Make (new|delete|run) publicJiri Olsa
This way we can use it outside of ui/browsers/hists.c and extend it in following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1466459899-1166-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-22perf hists browser: Move hist_browser into header fileJiri Olsa
This way we can use it outside of ui/browsers/hists.c and extend it in following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1466459899-1166-3-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-22perf script stackcollapse: Remove reference to the perl interpreterArnaldo Carvalho de Melo
It is ignored and this is actually a python script, not a perl one. Reported-by: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Link: http://lkml.kernel.org/n/tip-0w4bpbqd79v3sl34jvpr11v0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-22Merge tag 'perf-core-for-mingo-20160621' of ↵Ingo Molnar
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: New features: - Add --dry-run option to 'perf record' to check if command line options can be parsed, but not doing any recording (Wang Nan) - Allow dumping the object files generated by llvm when processing eBPF scriptlet events (Wang Nan) - Add stackcollapse.py script to help generating flame graphs (Paolo Bonzini) Documentation changes: - Fix 'perf script' documentation of '-f' when it should be '-F' (Adrian Hunter) Infrastructure changes: - Fix write_backwards fallback when using a new tool on older kernels without support for this feature (Arnaldo Carvalho de Melo) - Remove some leftovers from the initial codebase copying from git (Arnaldo Carvalho de Melo) - List libelf-devel as an alternative, as this is how the libelf development package is called on OpenSuSE (Jean Delvare) - Rename __hists__add_entry to hists__add_entry (Jiri Olsa) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-21perf script: Add stackcollapse.py scriptPaolo Bonzini
Add stackcollapse.py script as an example of parsing call chains, and also of using optparse to access command line options. The flame graph tools include a set of scripts that parse output from various tools (including "perf script"), remove the offsets in the function and collapse each stack to a single line. The website also says "perf report could have a report style [...] that output folded stacks directly, obviating the need for stackcollapse-perf.pl", so here it is. This script is a Python rewrite of stackcollapse-perf.pl, using the perf scripting interface to access the perf data directly from Python. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Brendan Gregg <bgregg@netflix.com> Link: http://lkml.kernel.org/r/1460467573-22989-1-git-send-email-pbonzini@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf evsel: Fix write_backwards fallbackArnaldo Carvalho de Melo
Commit b90dc17a5d14 "perf evsel: Add overwrite attribute and check write_backward" misunderstood the 'order' should be obeyed in __perf_evsel__open. But the way this was done for attr.write_backwards was buggy, as we need to check features in the inverse order of their introduction to the kernel, so that a newer tool checks first the newest perf_event_attr fields, detecting that the older kernel doesn't have support for them. Also, we can avoid calling sys_perf_event_open() if we have already detected the missing of write_backward. Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Fixes: b90dc17a5d14 ("perf evsel: Add overwrite attribute and check write_backward") Link: http://lkml.kernel.org/r/1466419645-75551-2-git-send-email-wangnan0@huawei.com Link: http://lkml.kernel.org/r/20160616214724.GI13337@kernel.org Signed-off-by: Wang Nan <wangnan0@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf record: Add --dry-run option to check cmdline optionsWang Nan
With '--dry-run', 'perf record' doesn't do reall recording. Combine with llvm.dump-obj option, --dry-run can be used to help compile BPF objects for embedded platform. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1466064161-48553-3-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf llvm: Allow dump llvm output object file using llvm.dump-objWang Nan
Add a 'llvm.dump-obj' config option to enable perf dump BPF object files compiled by LLVM. This option is useful when using BPF objects in embedded platforms. LLVM compiler won't be deployed in these platforms, and currently we don't support dynamic compiling library. Before this patch users have to explicitly issue llvm commands to compile BPF scripts, and can't use helpers (like include path detection and default macros) in perf. With this option, user is allowed to use perf to compile their BPF objects then copy them into their embedded platforms. Committer notice: Testing it: # cat ~/.perfconfig [llvm] dump-obj = true # # ls -la filter.o ls: cannot access filter.o: No such file or directory # cat filter.c #include <uapi/linux/bpf.h> #define SEC(NAME) __attribute__((section(NAME), used)) SEC("func=hrtimer_nanosleep rqtp->tv_nsec") int func(void *ctx, int err, long nsec) { return nsec > 1000; } char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; # trace -e nanosleep --event filter.c usleep 6 LLVM: dumping filter.o 0.007 ( 0.007 ms): usleep/13976 nanosleep(rqtp: 0x7ffc5847f640 ) ... 0.007 ( ): perf_bpf_probe:func:(ffffffff811137d0) tv_nsec=6000) 0.070 ( 0.070 ms): usleep/13976 ... [continued]: nanosleep()) = 0 # ls -la filter.o -rw-r--r--. 1 root root 776 Jun 20 17:01 filter.o # readelf -SW filter.o There are 7 section headers, starting at offset 0x148: Section Headers: [Nr] Name Type Address Off Size ES Flg Lk Inf Al [ 0] NULL 0000000000000000 000000 000000 00 0 0 0 [ 1] .strtab STRTAB 0000000000000000 0000e8 00005a 00 0 0 1 [ 2] .text PROGBITS 0000000000000000 000040 000000 00 AX 0 0 4 [ 3] func=hrtimer_nanosleep rqtp->tv_nsec PROGBITS 0000000000000000 000040 000028 00 AX 0 0 8 [ 4] license PROGBITS 0000000000000000 000068 000004 00 WA 0 0 1 [ 5] version PROGBITS 0000000000000000 00006c 000004 00 WA 0 0 4 [ 6] .symtab SYMTAB 0000000000000000 000070 000078 18 1 2 8 Key to Flags: W (write), A (alloc), X (execute), M (merge), S (strings) I (info), L (link order), G (group), T (TLS), E (exclude), x (unknown) O (extra OS processing required) o (OS specific), p (processor specific) # Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1466064161-48553-2-git-send-email-wangnan0@huawei.com [ s/dumpping/dumping/g ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf tools: Remove --perf-dir and --work-dirArnaldo Carvalho de Melo
Completely unused in perf, carried along all this time from the initial copy of git infrastructure, ditch'em. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-wtiln26gyqndprmkl0kdswvi@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf tools: Remove some unused functionsArnaldo Carvalho de Melo
Probably are there since the beginning, taken from git but never used. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-lr65jeefffjeaywoapps9a6i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf hists: Rename __hists__add_entry to hists__add_entryJiri Olsa
There's no reason we should suffer the '__' prefix for the base global function. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-12-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21perf script: Fix documentation of '-f' when it should be '-F'Adrian Hunter
The documentation for perf script mixes up '-f' and '-F'. Fix it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/None Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-21kbuild: List libelf-devel as an alternativeJean Delvare
On openSUSE, the libelf development files are in package libelf-devel. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michal Marek <mmarek@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-kbuild@vger.kernel.org Link: http://lkml.kernel.org/n/tip-s8nyk3pyy2927sd7qp7u42oi@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-16Merge tag 'perf-core-for-mingo-20160615' of ↵Ingo Molnar
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: - Add --ldlat option to 'perf mem' to specify load latency for loads event (e.g. cpu/mem-loads/ ) (Jiri Olsa) Build fixes: - Fix libunwind related compile error for static cross build (He Kuang) Infrastructure changes: - UI refactorings to support headers with multiple lines, non-evsel hists browsers, toggle showing callchains, etc (Jiri Olsa) - More prep work for caching probe definitions, paving the way for supporting SDT (Statically Defined Traces) userspace probes (Masami Hiramatsu) - Handle NULL at perf_config_set__delete() (Taeung Song) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-15perf probe: Add --cache option to cache the probe definitionsMasami Hiramatsu
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 <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160615032840.31330.44412.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf probe: Introduce perf_cache interfacesMasami Hiramatsu
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 <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160615032830.31330.84998.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf hists: Replace perf_evsel arg perf_hpp_fmt's width callbackJiri Olsa
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 <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-11-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf hists: Replace perf_evsel arg perf_hpp_fmt's header callbackJiri Olsa
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 <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-10-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf stdio: Add use_callchain parameter to hists__fprintfJiri Olsa
It will be convenient in following patches to display hists entries without callchains even if they are defined. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf stdio: Do not pass hists in hist_entry__fprintfJiri Olsa
There's no need, we have the hists pointer in struct hist_entry. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-8-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf stdio: Separate standard headers outputJiri Olsa
Introducing hists__fprintf_standard_headers function to separate standard headers display code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf stdio: Separate hierarchy headers outputJiri Olsa
Introducing hists__fprintf_hierarchy_headers function to separate hierarchy headers display code. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf stdio: Separate headers outputJiri Olsa
Introducing hists__fprintf_headers function to separate the code that displays headers. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf tui: Separate hierarchy and standard headers outputJiri Olsa
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 <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf tools: Fix Data Object sort entry width indexJiri Olsa
Putting correct HISTC_MEM_DADDR_DSO index to Data Object sort entry. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-3-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf mem: Add --ldlat optionJiri Olsa
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 <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1465928361-2442-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-15perf unwind: Fix compile error for static cross buildHe Kuang
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 <hekuang@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1465988636-81502-1-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-14perf probe: Uncomment and export synthesize_perf_probe_point()Masami Hiramatsu
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 <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160608092949.3116.21958.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-14perf probe: Add perf_probe_event__copy()Masami Hiramatsu
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 <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160608092940.3116.18034.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-14perf buildid: Rename and export build_id_cache__cachedir()Masami Hiramatsu
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 <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160608092930.3116.67575.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-14perf probe: Fix to add NULL check for strndupMasami Hiramatsu
Fix to add a NULL check for strndup when parsing probe trace command. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160608092920.3116.63319.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-14perf tools: Fix rm_rf() to handle non-regular files correctlyMasami Hiramatsu
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 <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160608092911.3116.90929.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-14perf config: Handle NULL at perf_config_set__delete()Taeung Song
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 <treeze.taeung@gmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1465389413-8936-2-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-06-14perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86Andi Kleen
The NMI watchdog uses either the fixed cycles or a generic cycles counter. This causes a lot of conflicts with users of the PMU who want to run a full group including the cycles fixed counter, for example the --topdown support recently added to perf stat. The code needs to fall back to not use groups, which can cause measurement inaccuracy due to multiplexing errors. This patch switches the NMI watchdog to use reference cycles on Intel systems. This is actually more accurate than cycles, because cycles can tick faster than the measured CPU Frequency due to Turbo mode. The ref cycles always tick at their frequency, or slower when the system is idling. That means the NMI watchdog can never expire too early, unlike with cycles. The reference cycles tick roughly at the frequency of the TSC, so the same period computation can be used. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: acme@kernel.org Cc: jolsa@kernel.org Link: http://lkml.kernel.org/r/1465478079-19993-1-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-14perf/x86/intel/uncore: Remove redundant pci_get_drvdata()Bjorn Helgaas
Remove redundant pci_get_drvdata() call. There's another call a few lines down, just before we test "box" for NULL. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/20160531212527.28718.92371.stgit@bhelgaas-glaptop2.roam.corp.google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-14Merge branch 'linus' into perf/core, to pick up fixes before merging new changesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-13Merge branch 'for-4.7-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu Pull percpu fixes from Tejun Heo: "While adding GFP_ATOMIC support to the percpu allocator, the synchronization for the fast-path which doesn't require external allocations was separated into pcpu_lock. Unfortunately, it incorrectly decoupled async paths and percpu chunks could get destroyed while still being operated on. This contains two patches to fix the bug" * 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: fix synchronization between synchronous map extension and chunk destruction percpu: fix synchronization between chunk->map_extend_work and chunk destruction
2016-06-13Merge tag 'regulator-fix-v4.7-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "Some driver specific fixes for the regulator subsystem: - Some of the changes to the core that were merged in the last merge window exposed the fact that the qcom-smd driver hadn't implemented the voltage enumeration interfaces like it should. Since it's a simple driver specific fix to implement them do that. - Fix the ramp delay configuration for tps51632" * tag 'regulator-fix-v4.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: qcom_smd: add list_voltage callback regulator: qcom_smd: add regulator ops for pm8941 lnldo regulator: qcom_smd: add list_voltage callback regulator: tps51632: Fix setting ramp delay
2016-06-13Merge remote-tracking branches 'regulator/fix/qcom-smd' and ↵Mark Brown
'regulator/fix/tps51632' into regulator-linus
2016-06-13regulator: qcom_smd: add list_voltage callbackSrinivas Kandagatla
This patch adds support to list_voltage callback, so that consumers like mmc core, can get information of supported voltage range. Without this patch there is no way for mmc core to know this voltage range. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-06-12Linux 4.7-rc3Linus Torvalds
2016-06-12Merge branch 'for-rc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal management fixes from Zhang Rui: - fix an ordering issue in cpu cooling that cooling device is registered before it's ready (freq_table being populated). (Lukasz Luba) - fix a missing comment update (Caesar Wang) * 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: thermal: add the note for set_trip_temp thermal: cpu_cooling: fix improper order during initialization
2016-06-11Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block layer fixes from Jens Axboe: "A small collection of fixes for the current series. This contains: - Two fixes for xen-blkfront, from Bob Liu. - A bug fix for NVMe, releasing only the specific resources we requested. - Fix for a debugfs flags entry for nbd, from Josef. - Plug fix from Omar, fixing up a case of code being switched between two functions. - A missing bio_put() for the new discard callers of submit_bio_wait(), fixing a regression causing a leak of the bio. From Shaun. - Improve dirty limit calculation precision in the writeback code, fixing a case where setting a limit lower than 1% of memory would end up being zero. From Tejun" * 'for-linus' of git://git.kernel.dk/linux-block: NVMe: Only release requested regions xen-blkfront: fix resume issues after a migration xen-blkfront: don't call talk_to_blkback when already connected to blkback nbd: pass the nbd pointer for flags debugfs block: missing bio_put following submit_bio_wait blk-mq: really fix plug list flushing for nomerge queues writeback: use higher precision calculation in domain_dirty_limits()
2016-06-11Merge tag 'gpio-v4.7-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO fixes from Linus Walleij: "A new bunch of GPIO fixes for v4.7. This time I am very grateful that Ricardo Ribalda Delgado went in and fixed my stupid refcounting mistakes in the removal path for GPIO chips. I had a feeling something was wrong here and so it was. It exploded on OMAP and it fixes their problem. Now it should be (more) solid. The rest i compilation, Kconfig and driver fixes. Some tagged for stable. Summary: - Fix a NULL pointer dereference when we are searching the GPIO device list but one of the devices have been removed (struct gpio_chip pointer is NULL). - Fix unaligned reference counters: we were ending on +3 after all said and done. It should be 0. Remove an extraneous get_device(), and call cdev_del() followed by device_del() in gpiochip_remove() instead and the count goes to zero and calls the release() function properly. - Fix a compile warning due to a missing #include in the OF/device tree portions. - Select ANON_INODES for GPIOLIB, we're using that for our character device. Some randconfig tests disclosed the problem. - Make sure the Zynq driver clock runs also without CONFIG_PM enabled - Fix an off-by-one error in the 104-DIO-48E driver - Fix warnings in bcm_kona_gpio_reset()" * tag 'gpio-v4.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: bcm-kona: fix bcm_kona_gpio_reset() warnings gpio: select ANON_INODES gpio: include <linux/io-mapping.h> in gpiolib-of gpiolib: Fix unaligned used of reference counters gpiolib: Fix NULL pointer deference gpio: zynq: initialize clock even without CONFIG_PM gpio: 104-dio-48e: Fix control port offset computation off-by-one error
2016-06-11Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Two current fixes: - one affects Qemu CD ROM emulation, which stopped working after the updates in SCSI to require VPD pages from all conformant devices. Fix temporarily by blacklisting Qemu (we can relax later when they come into compliance). - The other is a fix to the optimal transfer size. We set up a minefield for ourselves by being confused about whether the limits are in bytes or sectors (SCSI optimal is in blocks and the queue parameter is in bytes). This tries to fix the problem (wrong setting for queue limits max_sectors) and make the problem more obvious by introducing a wrapper function" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: sd: Fix rw_max for devices that report an optimal xfer size scsi: Add QEMU CD-ROM to VPD Inquiry Blacklist
2016-06-11Merge branch 'i2c/for-current' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: - a bigger fix for i801 to finally be able to be loaded on some machines again - smaller driver fixes - documentation update because of a renamed file * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: mux: reg: Provide of_match_table i2c: mux: refer to i2c-mux.txt i2c: octeon: Avoid printk after too long SMBUS message i2c: octeon: Missing AAK flag in case of I2C_M_RECV_LEN i2c: i801: Allow ACPI SystemIO OpRegion to conflict with PCI BAR
2016-06-11Merge tag 'devicetree-fixes-for-4.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree fixes from Rob Herring: - fix unflatten_dt_nodes when dad parameter is set. - add vendor prefixes for TechNexion and UniWest - documentation fix for Marvell BT - OF IRQ kerneldoc fixes - restrict CMA alignment adjustments to non dma-coherent - a couple of warning fixes in reserved-memory code - DT maintainers updates * tag 'devicetree-fixes-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: drivers: of: add definition of early_init_dt_alloc_reserved_memory_arch drivers/of: Fix depth for sub-tree blob in unflatten_dt_nodes() drivers: of: Fix of_pci.h header guard dt-bindings: Add vendor prefix for TechNexion of: add vendor prefix for UniWest dt: bindings: fix documentation for MARVELL's bt-sd8xxx wireless device of: add missing const for of_parse_phandle_with_args() in !CONFIG_OF of: silence warnings due to max() usage drivers: of: of_reserved_mem: fixup the CMA alignment not to affect dma-coherent of: irq: fix of_irq_get[_byname]() kernel-doc MAINTAINERS: DeviceTree maintainer updates
2016-06-11Merge tag '20160610_uvc_compat_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux Pull uvc compat XU ioctl fixes from Andy Lutomirski: "uvc's compat XU ioctls go through tons of potentially buggy indirection. The first patch removes the indirection. The second one cleans up the code. Compile-tested only. I have the hardware, but I have absolutely no idea what XU does, how to use it, what software to recompile as 32-bit, or what to test in that software" * tag '20160610_uvc_compat_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux: uvc_v4l2: Simplify compat ioctl implementation uvc: Forward compat ioctls to their handlers directly
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