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* perf subcmd: Create subcmd libraryJosh Poimboeuf2015-12-172-2/+2
| | | | | | | | | | | | | | | Move the subcommand-related files from perf to a new library named libsubcmd.a. Since we're moving files anyway, go ahead and rename 'exec_cmd.*' to 'exec-cmd.*' to be consistent with the naming of all the other files. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/c0a838d4c878ab17fee50998811612b2281355c1.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Remove 'perf' from subcmd function and variable namesJosh Poimboeuf2015-12-171-1/+1
| | | | | | | | | | | | In preparation for moving exec_cmd.c and run-command.c out of perf and into a library, remove 'perf' from all the symbol names. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/bc3ee82b40b8f396b644fa49e0f7260ce442635b.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Remove tarpkg at end of testJosh Poimboeuf2015-12-141-1/+2
| | | | | | | | | Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/5e7e97a23e3ce11b59d1009b39ebb6d2813a0560.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Add Build file to dependencies for llvm-src-*.cJosh Poimboeuf2015-12-141-3/+3
| | | | | | | | | | | | | Because the Build file writes source code to the generated llvm-src-*.c files, it should be listed as one of the dependencies, so that any future changes to the code being echoed won't require a 'make clean'. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/9b9886c295750dc83cbbb29a665d280f9c5e8b3e.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Fix hist testcases when kptr_restrict is onNamhyung Kim2015-12-141-3/+2
| | | | | | | | | | | | | | | | Currently if kptr_restrict is enabled, all hist tests failed with segfaults. This is because machine__create_kernel_maps() in setup_fake_machine() failed in that situation, and it called machine__delete() on the error path. But outer callers again called machines__exit() causing double free for the host machine. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1450062673-22312-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Dump the stack when test segfaults when in verbose modeArnaldo Carvalho de Melo2015-12-141-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | E.g.: # perf test 26 26: Test mmap thread lookup : FAILED! # perf test -v 26 26: Test mmap thread lookup : --- start --- test child forked, pid 9269 tid = 9269, map = 0x7ff99ff0c000 tid = 9270, map = 0x7ff99ff0b000 tid = 9271, map = 0x7ff99ff0a000 tid = 9272, map = 0x7ff99ff09000 perf: Segmentation fault Obtained 13 stack frames. perf(sighandler_dump_stack+0x41) [0x4e3541] /lib64/libc.so.6(+0x34960) [0x7ff99d5f6960] perf(thread__put+0x5b) [0x4c6f6b] perf(machine__process_event+0x14e) [0x4bd37e] perf(perf_event__synthesize_threads+0x3aa) [0x48678a] perf(test__mmap_thread_lookup+0x20a) [0x474e0a] perf() [0x460d56] perf(cmd_test+0x589) [0x461319] perf() [0x47c641] perf(main+0x617) [0x422317] /lib64/libc.so.6(__libc_start_main+0xf0) [0x7ff99d5e1fe0] perf() [0x422429] [(nil)] test child interrupted ---- end ---- Test mmap thread lookup: FAILED! # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-sypazzsl4ptctrmlyi2zcmaj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Create kernel maps properly for hist entries testJiri Olsa2015-12-071-0/+5
| | | | | | | | | | | | | | | | | | | It fixes segfault within machine__exit, that's caused but not creating kernel maps for machine.. We're calling machine__destroy_kernel_maps in machine__exit since commit: ebe9729c8c31 perf machine: Fix to destroy kernel maps when machine exits Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/tip-k4snzv5t4dvdckggzwdzyljo@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Prevent using bpf-output event in round trip name testJiri Olsa2015-12-071-1/+2
| | | | | | | | | | | | | | | | | | | The bpf-output is added under software events, but is not parse-able within parse_events, which is what round trip test is expecting. Checking software events only until dummy event. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1449131658-1841-6-git-send-email-jolsa@kernel.org [ Make it a one liner by keeping __perf_evsel__name_array_test() around ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Fix cpus and thread maps reference in error pathJiri Olsa2015-12-071-0/+7
| | | | | | | | | | | | | | | | In error path to try user space event, both cpus and threads map now owned by evlist and freed by perf_evlist__set_maps call. Getting reference to keep them alive. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1449131658-1841-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Use machine__new_host in mmap thread code reading testJiri Olsa2015-12-071-5/+2
| | | | | | | | | | | | | | | | | | | | This is more straightforward than what we have now. It also fixes a segfault within machine__exit, that's caused by not creating kernel maps for machine.. We're calling machine__destroy_kernel_maps in machine__exit since commit: ebe9729c8c31 perf machine: Fix to destroy kernel maps when machine exits Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1449131658-1841-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Use machine__new_host in mmap thread lookup testJiri Olsa2015-12-071-4/+2
| | | | | | | | | | | | | | | | | | | | | This is more straightforward than what we have now. It also fixes a segfault within machine__exit, that's caused by not creating kernel maps for machine.. We're calling machine__destroy_kernel_maps in machine__exit since commit: ebe9729c8c31 perf machine: Fix to destroy kernel maps when machine exits Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1449131658-1841-3-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Use machine__new_host in dwarf unwind testJiri Olsa2015-12-071-6/+2
| | | | | | | | | | | | | | | | | | | | This is more straightforward than what we have now. It also fixes a segfault within machine__exit, that's caused by not creating kernel maps for machine.. We're calling machine__destroy_kernel_maps in machine__exit since commit: ebe9729c8c31 perf machine: Fix to destroy kernel maps when machine exits Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1449131658-1841-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: 'unwind' test should create kernel mapsJiri Olsa2015-11-271-0/+5
| | | | | | | | | | | | | | | | | | The 'perf test unwind' is failing because it forgot to create the kernel maps, fix it. After the patch: # perf test unwind 40: Test dwarf unwind : Ok Reported-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20151127082121.GA24503@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Add callchain order setup for DWARF unwinder testJiri Olsa2015-11-231-3/+19
| | | | | | | | | | | | | | Adding callchain order setup for DWARF unwinder test. The test now runs unwinder for both callee and caller orders. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Milian Wolff <milian.wolff@kdab.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1447772739-18471-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Mute test cases error messages if verbose == 0Wang Nan2015-11-191-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes error messages in breaks the pretty output of 'perf test'. For example: # mv /lib/modules/4.3.0-rc4+/build/vmlinux{,.bak} # perf test LLVM BPF 35: Test LLVM searching and compiling : 35.1: Basic BPF llvm compiling test : Ok 35.2: Test kbuild searching : Ok 35.3: Compile source for BPF prologue generation test : Ok 37: Test BPF filter : 37.1: Test basic BPF filtering : Ok 37.2: Test BPF prologue generation :Failed to find the path for kernel: No such file or directory FAILED! This patch mute test cases thoroughly by redirect their stdout and stderr to /dev/null when verbose == 0. After applying this patch: # ./perf test LLVM BPF 35: Test LLVM searching and compiling : 35.1: Basic BPF llvm compiling test : Ok 35.2: Test kbuild searching : Ok 35.3: Compile source for BPF prologue generation test : Ok 37: Test BPF filter : 37.1: Test basic BPF filtering : Ok 37.2: Test BPF prologue generation : FAILED! # ./perf test -v LLVM BPF 35: Test LLVM searching and compiling : 35.1: Basic BPF llvm compiling test : --- start --- test child forked, pid 13183 Kernel build dir is set to /lib/modules/4.3.0-rc4+/build set env: KBUILD_DIR=/lib/modules/4.3.0-rc4+/build ... bpf: config 'func=null_lseek file->f_mode offset orig' is ok Looking at the vmlinux_path (7 entries long) Failed to find the path for kernel: No such file or directory bpf_probe: failed to convert perf probe eventsFailed to add events selected by BPF test child finished with -1 ---- end ---- Test BPF filter subtest 1: FAILED! Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1447749170-175898-6-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Print result for each BPF subtestWang Nan2015-11-193-10/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch prints each sub-tests results for BPF testcases. Before: # ./perf test BPF 37: Test BPF filter : Ok After: # ./perf test BPF 37: Test BPF filter : 37.1: Test basic BPF filtering : Ok 37.2: Test BPF prologue generation : Ok When a failure happens: # cat ~/.perfconfig [llvm] clang-path = "/bin/false" # ./perf test BPF 37: Test BPF filter : 37.1: Test basic BPF filtering : Skip 37.2: Test BPF prologue generation : Skip Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1447749170-175898-5-git-send-email-wangnan0@huawei.com [ Fixed up not to use .func in an anonymous union ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Print result for each LLVM subtestWang Nan2015-11-193-50/+115
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently 'perf test llvm' and 'perf test BPF' have multiple sub-tests, but the result is provided in only one line: # perf test LLVM 35: Test LLVM searching and compiling : Ok This patch introduces sub-tests support, allowing 'perf test' to report result for each sub-tests: # perf test LLVM 35: Test LLVM searching and compiling : 35.1: Basic BPF llvm compiling test : Ok 35.2: Test kbuild searching : Ok 35.3: Compile source for BPF prologue generation test : Ok When a failure happens: # cat ~/.perfconfig [llvm] clang-path = "/bin/false" # perf test LLVM 35: Test LLVM searching and compiling : 35.1: Basic BPF llvm compiling test : FAILED! 35.2: Test kbuild searching : Skip 35.3: Compile source for BPF prologue generation test : Skip And: # rm ~/.perfconfig # ./perf test LLVM 35: Test LLVM searching and compiling : 35.1: Basic BPF llvm compiling test : Skip 35.2: Test kbuild searching : Skip 35.3: Compile source for BPF prologue generation test : Skip Skip by user: # ./perf test -s 1,`seq -s , 3 42` 1: vmlinux symtab matches kallsyms : Skip (user override) 2: detect openat syscall event : Ok ... 35: Test LLVM searching and compiling : Skip (user override) ... Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1447749170-175898-4-git-send-email-wangnan0@huawei.com [ Changed so that func is not on an anonymous union ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tests: Pass the subtest index to each test routineArnaldo Carvalho de Melo2015-11-1937-80/+81
| | | | | | | | | | | | | | | | | | | | | | | | | | Some tests have sub-tests we want to run, so allow passing this. Wang tried to avoid having to touch all tests, but then, having the test.func in an anonymous union makes the build fail on older compilers, like the one in RHEL6, where: test a = { .func = foo, }; fails. To fix it leave the func pointer in the main structure and pass the subtest index to all tests, end result function is the same, but we have just one function pointer, not two, with and without the subtest index as an argument. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-5genj0ficwdmelpoqlds0u4y@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Fix 'perf test BPF' when it fails to find a suitable vmlinuxWang Nan2015-11-181-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Two bugs in 'perf test BPF' are found when testing BPF prologue without vmlinux: # mv /lib/modules/4.3.0-rc4+/build/vmlinux{,.bak} # ./perf test BPF 37: Test BPF filter :Failed to find the path for kernel: No such file or directory Ok Test BPF should fail in this case. After this patch: # ./perf test BPF 37: Test BPF filter :Failed to find the path for kernel: No such file or directory FAILED! # mv /lib/modules/4.3.0-rc4+/build/vmlinux{.bak,} # ./perf test BPF 37: Test BPF filter : Ok Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1447749170-175898-2-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Test the BPF prologue adding infrastructureWang Nan2015-11-186-1/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces a new BPF script to test the BPF prologue adding routines. The new script probes at null_lseek, which is the function pointer used when we try to lseek on '/dev/null'. The null_lseek function is chosen because it is used by function pointers, so we don't need to consider inlining and LTO. By extracting file->f_mode, bpf-script-test-prologue.c should know whether the file is writable or readonly. According to llseek_loop() and bpf-script-test-prologue.c, one fourth of total lseeks should be collected. Committer note: Testing it: # perf test -v BPF <SNIP> Kernel build dir is set to /lib/modules/4.3.0+/build set env: KBUILD_DIR=/lib/modules/4.3.0+/build unset env: KBUILD_OPTS include option is set to -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/4.9.2/include -I/home/git/linux/arch/x86/include -Iarch/x86/include/generated/uapi -Iarch/x86/include/generated -I/home/git/linux/include -Iinclude -I/home/git/linux/arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I/home/git/linux/include/uapi -Iinclude/generated/uapi -include /home/git/linux/include/linux/kconfig.h set env: NR_CPUS=4 set env: LINUX_VERSION_CODE=0x40300 set env: CLANG_EXEC=/usr/libexec/icecc/bin/clang set env: CLANG_OPTIONS=-xc set env: KERNEL_INC_OPTIONS= -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/4.9.2/include -I/home/git/linux/arch/x86/include -Iarch/x86/include/generated/uapi -Iarch/x86/include/generated -I/home/git/linux/include -Iinclude -I/home/git/linux/arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I/home/git/linux/include/uapi -Iinclude/generated/uapi -include /home/git/linux/include/linux/kconfig.h set env: WORKING_DIR=/lib/modules/4.3.0+/build set env: CLANG_SOURCE=- llvm compiling command template: echo '/* * bpf-script-test-prologue.c * Test BPF prologue */ #ifndef LINUX_VERSION_CODE # error Need LINUX_VERSION_CODE # error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig' #endif #define SEC(NAME) __attribute__((section(NAME), used)) #include <uapi/linux/fs.h> #define FMODE_READ 0x1 #define FMODE_WRITE 0x2 static void (*bpf_trace_printk)(const char *fmt, int fmt_size, ...) = (void *) 6; SEC("func=null_lseek file->f_mode offset orig") int bpf_func__null_lseek(void *ctx, int err, unsigned long f_mode, unsigned long offset, unsigned long orig) { if (err) return 0; if (f_mode & FMODE_WRITE) return 0; if (offset & 1) return 0; if (orig == SEEK_CUR) return 0; return 1; } char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; ' | $CLANG_EXEC -D__KERNEL__ -D__NR_CPUS__=$NR_CPUS -DLINUX_VERSION_CODE=$LINUX_VERSION_CODE $CLANG_OPTIONS $KERNEL_INC_OPTIONS -Wno-unused-value -Wno-pointer-sign -working-directory $WORKING_DIR -c "$CLANG_SOURCE" -target bpf -O2 -o - libbpf: loading object '[bpf_prologue_test]' from buffer libbpf: section .strtab, size 135, link 0, flags 0, type=3 libbpf: section .text, size 0, link 0, flags 6, type=1 libbpf: section .data, size 0, link 0, flags 3, type=1 libbpf: section .bss, size 0, link 0, flags 3, type=8 libbpf: section func=null_lseek file->f_mode offset orig, size 112, link 0, flags 6, type=1 libbpf: found program func=null_lseek file->f_mode offset orig libbpf: section license, size 4, link 0, flags 3, type=1 libbpf: license of [bpf_prologue_test] is GPL libbpf: section version, size 4, link 0, flags 3, type=1 libbpf: kernel version of [bpf_prologue_test] is 40300 libbpf: section .symtab, size 168, link 1, flags 0, type=2 bpf: config program 'func=null_lseek file->f_mode offset orig' symbol:null_lseek file:(null) line:0 offset:0 return:0 lazy:(null) parsing arg: file->f_mode into file, f_mode(1) parsing arg: offset into offset parsing arg: orig into orig bpf: config 'func=null_lseek file->f_mode offset orig' is ok Looking at the vmlinux_path (7 entries long) Using /lib/modules/4.3.0+/build/vmlinux for symbols Open Debuginfo file: /lib/modules/4.3.0+/build/vmlinux Try to find probe point from debuginfo. Matched function: null_lseek Probe point found: null_lseek+0 Searching 'file' variable in context. Converting variable file into trace event. converting f_mode in file f_mode type is unsigned int. Searching 'offset' variable in context. Converting variable offset into trace event. offset type is long long int. Searching 'orig' variable in context. Converting variable orig into trace event. orig type is int. Found 1 probe_trace_events. Opening /sys/kernel/debug/tracing//kprobe_events write=1 Writing event: p:perf_bpf_probe/func _text+4840528 f_mode=+68(%di):u32 offset=%si:s64 orig=%dx:s32 libbpf: don't need create maps for [bpf_prologue_test] prologue: pass validation prologue: slow path prologue: fetch arg 0, base reg is %di prologue: arg 0: offset 68 prologue: fetch arg 1, base reg is %si prologue: fetch arg 2, base reg is %dx add bpf event perf_bpf_probe:func and attach bpf program 3 adding perf_bpf_probe:func adding perf_bpf_probe:func to 0x51672c0 mmap size 1052672B Opening /sys/kernel/debug/tracing//kprobe_events write=1 Opening /sys/kernel/debug/tracing//uprobe_events write=1 Parsing probe_events: p:perf_bpf_probe/func _text+4840528 f_mode=+68(%di):u32 offset=%si:s64 orig=%dx:s32 Group:perf_bpf_probe Event:func probe:p Writing event: -:perf_bpf_probe/func test child finished with 0 ---- end ---- Test BPF filter: Ok # Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1447675815-166222-13-git-send-email-wangnan0@huawei.com [ Added tools/perf/tests/llvm-src-prologue.c to .gitignore ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Fix build of BPF and LLVM on older glibc librariesArnaldo Carvalho de Melo2015-11-182-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ rpm -q glibc glibc-2.12-1.166.el6_7.1.x86_64 <SNIP> CC /tmp/build/perf/tests/llvm.o cc1: warnings being treated as errors tests/llvm.c: In function ‘test_llvm__fetch_bpf_obj’: tests/llvm.c:53: error: declaration of ‘index’ shadows a global declaration /usr/include/string.h:489: error: shadowed declaration is here <SNIP> CC /tmp/build/perf/tests/bpf.o cc1: warnings being treated as errors tests/bpf.c: In function ‘__test__bpf’: tests/bpf.c:149: error: declaration of ‘index’ shadows a global declaration /usr/include/string.h:489: error: shadowed declaration is here <SNIP> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: pi3orama@163.com Cc: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Fixes: b31de018a628 ("perf test: Enhance the LLVM test: update basic BPF test program") Fixes: ba1fae431e74 ("perf test: Add 'perf test BPF'") Link: http://lkml.kernel.org/n/tip-akpo4r750oya2phxoh9e3447@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Add llvm-src-base.c and llvm-src-kbuild.c to .gitignoreYunlong Song2015-11-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Commit b31de018a6284a25e0fdfeb028e724f8417ec3b1 ("perf test: Enhance the LLVM test: update basic BPF test program") dynamically creates file llvm-src-base.c during the perf building. Similarly, the commit 7af3f3d55b80cce40ad94b6b8e173dccedaf25e6 ("perf test: Enhance the LLVM tests: add kbuild test") dynamically creates file llvm-src-kbuild.c during the perf building. Add them to .gitignore. Signed-off-by: Yunlong Song <yunlong.song@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Fixes: b31de018a628 ("perf test: Enhance the LLVM test: update basic BPF test program") Fixes: 7af3f3d55b80 ("perf test: Enhance the LLVM tests: add kbuild test") Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Do not be case sensitive when searching for matching testsArnaldo Carvalho de Melo2015-11-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | Before: # perf test llvm # perf test LLVM 35: Test LLVM searching and compiling : Ok # After # perf test llvm 35: Test LLVM searching and compiling : Ok # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-c1u05npqbf6epse17ovfejoj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Add 'perf test BPF'Wang Nan2015-11-064-0/+215
| | | | | | | | | | | | | | | | | | | | This patch adds BPF testcase for testing BPF event filtering. By utilizing the result of 'perf test LLVM', this patch compiles the eBPF sample program then test its ability. The BPF script in 'perf test LLVM' lets only 50% samples generated by epoll_pwait() to be captured. This patch runs that system call for 111 times, so the result should contain 56 samples. Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1446817783-86722-8-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Enhance the LLVM tests: add kbuild testWang Nan2015-11-064-1/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a kbuild testcase to check whether kernel headers can be correctly found. For example: # mv /lib/modules/4.3.0-rc5{,.bak} # perf test LLVM 38: Test LLVM searching and compiling : Skip # perf test -v LLVM ... <stdin>:11:10: fatal error: 'uapi/linux/fs.h' file not found #include <uapi/linux/fs.h> ^ 1 error generated. ERROR: unable to compile - Hint: Check error message shown above. Hint: You can also pre-compile it into .o using: clang -target bpf -O2 -c - with proper -I and -D options. Failed to compile test case: 'Test kbuild searching' test child finished with -2 Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1446817783-86722-7-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Enhance the LLVM test: update basic BPF test programWang Nan2015-11-064-31/+129
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch replaces the original toy BPF program with the previously introduced bpf-script-example.c. Dynamically embeddeding it into 'llvm-src-base.c'. The newly introduced BPF program attaches a BPF program to 'sys_epoll_pwait()'. perf itself never use that syscall, so further test can verify their result with it. The program would generate 1 sample in every 2 calls of epoll_pwait() system call. Since the resulting BPF object is useful per se for further tests, test_llvm__fetch_bpf_obj() is introduced for creating BPF objects from source. The LLVM test was rewritten to use it. Committer note: Running it: [root@zoo wb]# perf test -v LLVM 35: Test LLVM searching and compiling : --- start --- test child forked, pid 17740 Kernel build dir is set to /lib/modules/4.3.0-rc1+/build set env: KBUILD_DIR=/lib/modules/4.3.0-rc1+/build unset env: KBUILD_OPTS include option is set to -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/4.9.2/include -I/home/git/linux/arch/x86/include -Iarch/x86/include/generated/uapi -Iarch/x86/include/generated -I/home/git/linux/include -Iinclude -I/home/git/linux/arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I/home/git/linux/include/uapi -Iinclude/generated/uapi -include /home/git/linux/include/linux/kconfig.h set env: NR_CPUS=4 set env: LINUX_VERSION_CODE=0x40300 set env: CLANG_EXEC=/usr/libexec/icecc/bin/clang set env: CLANG_OPTIONS=-xc set env: KERNEL_INC_OPTIONS= -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/4.9.2/include -I/home/git/linux/arch/x86/include -Iarch/x86/include/generated/uapi -Iarch/x86/include/generated -I/home/git/linux/include -Iinclude -I/home/git/linux/arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I/home/git/linux/include/uapi -Iinclude/generated/uapi -include /home/git/linux/include/linux/kconfig.h set env: WORKING_DIR=/lib/modules/4.3.0-rc1+/build set env: CLANG_SOURCE=- llvm compiling command template: echo '/* * bpf-script-example.c * Test basic LLVM building */ #ifndef LINUX_VERSION_CODE # error Need LINUX_VERSION_CODE # error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig' #endif #define BPF_ANY 0 #define BPF_MAP_TYPE_ARRAY 2 #define BPF_FUNC_map_lookup_elem 1 #define BPF_FUNC_map_update_elem 2 static void *(*bpf_map_lookup_elem)(void *map, void *key) = (void *) BPF_FUNC_map_lookup_elem; static void *(*bpf_map_update_elem)(void *map, void *key, void *value, int flags) = (void *) BPF_FUNC_map_update_elem; struct bpf_map_def { unsigned int type; unsigned int key_size; unsigned int value_size; unsigned int max_entries; }; #define SEC(NAME) __attribute__((section(NAME), used)) struct bpf_map_def SEC("maps") flip_table = { .type = BPF_MAP_TYPE_ARRAY, .key_size = sizeof(int), .value_size = sizeof(int), .max_entries = 1, }; SEC("func=sys_epoll_pwait") int bpf_func__sys_epoll_pwait(void *ctx) { int ind =0; int *flag = bpf_map_lookup_elem(&flip_table, &ind); int new_flag; if (!flag) return 0; /* flip flag and store back */ new_flag = !*flag; bpf_map_update_elem(&flip_table, &ind, &new_flag, BPF_ANY); return new_flag; } char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; ' | $CLANG_EXEC -D__KERNEL__ -D__NR_CPUS__=$NR_CPUS -DLINUX_VERSION_CODE=$LINUX_VERSION_CODE $CLANG_OPTIONS $KERNEL_INC_OPTIONS -Wno-unused-value -Wno-pointer-sign -working-directory $WORKING_DIR -c "$CLANG_SOURCE" -target bpf -O2 -o - test child finished with 0 ---- end ---- Test LLVM searching and compiling: Ok [root@zoo wb]# Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1446817783-86722-6-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* bpf tools: Improve libbpf error reportingWang Nan2015-11-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In this patch, a series of libbpf specific error numbers and libbpf_strerror() are introduced to help reporting errors. Functions are updated to pass correct the error number through the CHECK_ERR() macro. All users of bpf_object__open{_buffer}() and bpf_program__title() in perf are modified accordingly. In addition, due to the error codes changing, bpf__strerror_load() is also modified to use them. bpf__strerror_head() is also changed accordingly so it can parse libbpf errors. bpf_loader_strerror() is introduced for that purpose, and will be improved by the following patch. load_program() is improved not to dump log buffer if it is empty. log buffer is also used to deduce whether the error was caused by an invalid program or other problem. v1 -> v2: - Using macro for error code. - Fetch error message based on array index, eliminate for-loop. - Use log buffer to detect the reason of failure. 3 new error code are introduced to replace LIBBPF_ERRNO__LOAD. In v1: # perf record -e ./test_ill_program.o ls event syntax error: './test_ill_program.o' \___ Failed to load program: Validate your program and check 'license'/'version' sections in your object SKIP # perf record -e ./test_kversion_nomatch_program.o ls event syntax error: './test_kversion_nomatch_program.o' \___ Failed to load program: Validate your program and check 'license'/'version' sections in your object SKIP # perf record -e ./test_big_program.o ls event syntax error: './test_big_program.o' \___ Failed to load program: Validate your program and check 'license'/'version' sections in your object SKIP In v2: # perf record -e ./test_ill_program.o ls event syntax error: './test_ill_program.o' \___ Kernel verifier blocks program loading SKIP # perf record -e ./test_kversion_nomatch_program.o event syntax error: './test_kversion_nomatch_program.o' \___ Incorrect kernel version SKIP (Will be further improved by following patches) # perf record -e ./test_big_program.o event syntax error: './test_big_program.o' \___ Program too big SKIP Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1446817783-86722-2-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Allow shuffling the build testsArnaldo Carvalho de Melo2015-11-051-0/+5
| | | | | | | | | | | | | | | | | | | | | | Those tests take a long time and sometimes we stop it, so allow randomly shuffling the tests so that we have a better chance of running more of them in partial 'make build-test' runs. Using it just on the 'build-test' target, i.e.: make -C tools/perf build-test Is equivalent to: make SHUF=1 -C tools/perf -f tests/make Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ey7461i9q4k8u0987j8guun6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Keep test result clean if '-v' not setWang Nan2015-11-035-17/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | According to [1], 'perf test' should avoid output too much information if '-v' is not set, only 'Ok', 'FAIL' or 'Skip' need to be printed. This patch removes several messages sent directly to stderr to make the output clean. Before this patch: # perf test dummy 23: Test using a dummy software event to keep tracking : (not supported) Ok After this patch: # perf test dummy 23: Test using a dummy software event to keep tracking : Skip [1] http://lkml.kernel.org/r/20151020134155.GE4400@redhat.com Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1446547486-229499-2-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Compile scriptlets to BPF objects when passing '.c' to --eventWang Nan2015-10-291-0/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides infrastructure for passing source files to --event directly using: # perf record --event bpf-file.c command This patch does following works: 1) Allow passing '.c' file to '--event'. parse_events_load_bpf() is expanded to allow caller tell it whether the passed file is source file or object. 2) llvm__compile_bpf() is called to compile the '.c' file, the result is saved into memory. Use bpf_object__open_buffer() to load the in-memory object. Introduces a bpf-script-example.c so we can manually test it: # perf record --clang-opt "-DLINUX_VERSION_CODE=0x40200" --event ./bpf-script-example.c sleep 1 Note that '--clang-opt' must put before '--event'. Futher patches will merge it into a testcase so can be tested automatically. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1444826502-49291-10-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Make perf depend on libbpfWang Nan2015-10-281-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By adding libbpf into perf's Makefile, this patch enables perf to build libbpf if libelf is found and neither NO_LIBELF nor NO_LIBBPF is set. The newly introduced code is similar to how libapi and libtraceevent are wired into Makefile.perf. MANIFEST is also updated for 'make perf-*-src-pkg'. Append make_no_libbpf to tools/perf/tests/make. The 'bpf' feature check is appended into default FEATURE_TESTS and FEATURE_DISPLAY, so perf will check the API version of bpf in /path/to/kernel/include/uapi/linux/bpf.h. Which should not fail except when we are trying to port this code to an old kernel. Error messages are also updated to notify users about the lack of BPF support in 'perf record' if libelf is missing or the BPF API check failed. tools/lib/bpf is added to TAG_FOLDERS to allow us to navigate libbpf files when working on perf using tools/perf/tags. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1444826502-49291-2-git-send-email-wangnan0@huawei.com [ Document NO_LIBBPF in Makefile.perf, noted by Jiri Olsa ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf cpu_map: Add data arg to cpu_map__build_map callbackJiri Olsa2015-10-191-2/+2
| | | | | | | | | | | | | | Adding data arg to cpu_map__build_map callback, so we could pass data along to the callback. It'll be needed in following patches to retrieve topology info from perf.data. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.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/1444992092-17897-41-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Suppress libtraceevent warningsNamhyung Kim2015-10-191-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently libtraceevent emits warning on unsupported event formats. However it'd be better to see them only -v option is given. To do that, it needs to override the warning() function which is used in the libtracevent. Thus add set_warning_routine() same as set_die_routine() and check the verbose flag in our warning routine. Before: # perf test 5 5: parse events tests : Warning: [kvmmmu:kvm_mmu_get_page] bad op token { Warning: [kvmmmu:kvm_mmu_sync_page] bad op token { Warning: [kvmmmu:kvm_mmu_unsync_page] bad op token { Warning: [kvmmmu:kvm_mmu_prepare_zap_page] bad op token { Warning: [kvmmmu:fast_page_fault] function is_writable_pte not defined ... Ok After: # perf test 5 5: parse events tests : Ok Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1445268229-1601-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf test: Silence tracepoint event failuresNamhyung Kim2015-10-193-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, when 'perf test' is run by a normal user, it'll fail to access tracepoint events. The output becomes somewhat messy because it tries to be nice with long error messages and hints. IMHO this is not needed for 'perf test' by default and AFAIK 'perf test' uses pr_debug() rather than pr_err() for such messages so that one can use -v option to see further details on failed testcases if needed. Before: $ perf test 1: vmlinux symtab matches kallsyms : FAILED! 2: detect openat syscall event :Error: No permissions to read /sys/kernel/debug/tracing/events/syscalls/sys_enter_openat Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' FAILED! 3: detect openat syscall event on all cpus :Error: No permissions to read /sys/kernel/debug/tracing/events/syscalls/sys_enter_openat Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' FAILED! ... After: $ perf test 1: vmlinux symtab matches kallsyms : FAILED! 2: detect openat syscall event : FAILED! 3: detect openat syscall event on all cpus : FAILED! ... $ perf test -v 2 2: detect openat syscall event : --- start --- test child forked, pid 30575 Error: No permissions to read /sys/kernel/debug/tracing/events/syscalls/sys_enter_openat Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' test child finished with -1 ---- end ---- detect openat syscall event: FAILED! Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1445268229-1601-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tests: Move x86 tests into arch directoryMatt Fleming2015-10-0512-2982/+5
| | | | | | | | | | | | | | | | | | | | | Move out the x86-specific tests into tools/perf/arch/x86/tests and define an 'arch_tests' array, which is the list of tests that only apply to the build architecture. We can also now begin to get rid of some of the #ifdef code that is present in the generic perf tests. Signed-off-by: Matt Fleming <matt.fleming@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kanaka Juvva <kanaka.d.juvva@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vikas Shivappa <vikas.shivappa@intel.com> Cc: Vince Weaver <vince@deater.net> Link: http://lkml.kernel.org/n/tip-9s68h4ptg06ah0lgnjz55mqn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tests: Add arch testsMatt Fleming2015-10-052-8/+25
| | | | | | | | | | | | | | | | | | | | | | | Tests that only make sense for some architectures currently live in the same place as the generic tests. Move out the x86-specific tests into tools/perf/arch/x86/tests and define an 'arch_tests' array, which is the list of tests that only apply to the build architecture. The main idea is to encourage developers to add arch tests to build out perf's test coverage, without dumping everything in tools/perf/tests. Signed-off-by: Matt Fleming <matt.fleming@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kanaka Juvva <kanaka.d.juvva@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vikas Shivappa <vikas.shivappa@intel.com> Cc: Vince Weaver <vince@deater.net> Link: http://lkml.kernel.org/n/tip-p4uc1c15ssbj8xj7ku5slpa6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tests: Add parsing test for 'P' modifierJiri Olsa2015-10-051-0/+16
| | | | | | | | | | | | | | We cant test 'P' modifier gets properly parsed, the functionality test itself is beyond this suite. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444068369-20978-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf machine: Add method for common kernel_map(FUNCTION) operationArnaldo Carvalho de Melo2015-09-302-3/+3
| | | | | | | | | | | | | And it is also a step in the direction of killing the separation of data and text maps in map_groups. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-rrds86kb3wx5wk8v38v56gw8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf machine: Use machine__kernel_map() thoroughlyArnaldo Carvalho de Melo2015-09-301-1/+1
| | | | | | | | | | | | In places where we were using its open coded equivalent. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-khkdugcdoqy3tkszm3jdxgbe@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf/urgent' into perf/core, to resolve a conflictIngo Molnar2015-09-162-8/+28
|\ | | | | | | | | | | | | Conflicts: tools/perf/ui/browsers/hists.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * perf tests: Fix software clock events test setting mapsAdrian Hunter2015-09-151-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | The test titled "Test software clock events have valid period values" was setting cpu/thread maps directly. Make it use the proper function perf_evlist__set_maps() especially now that it also propagates the maps. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/1441699142-18905-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tests: Fix task exit test setting mapsAdrian Hunter2015-09-151-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | The test titled "Test number of exit event of a simple workload" was setting cpu/thread maps directly. Make it use the proper function perf_evlist__set_maps() especially now that it also propagates the maps. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/1441699142-18905-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf evsel: Propagate error info from tp_formatJiri Olsa2015-09-155-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Propagate error info from tp_format via ERR_PTR to get it all the way down to the parse-event.c tracepoint adding routines. Following functions now return pointer with encoded error: - tp_format - trace_event__tp_format - perf_evsel__newtp_idx - perf_evsel__newtp This affects several other places in perf, that cannot use pointer check anymore, but must utilize the err.h interface, when getting error information from above functions list. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Raphael Beamonte <raphael.beamonte@gmail.com> Link: http://lkml.kernel.org/r/1441615087-13886-5-git-send-email-jolsa@kernel.org [ Add two missing ERR_PTR() and one IS_ERR() ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf test: Add entry for hists socket filterKan Liang2015-09-141-10/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | Add test case for hists socket filter. Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1441377946-44429-5-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tests: Introduce iterator function for testsMatt Fleming2015-09-141-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for introducing more arrays of tests, e.g. "arch tests" (architecture-specific tests), abstract the code to iterate over the list of tests into a helper function. This way, code that uses a 'struct test' doesn't need to worry about how the tests are grouped together and changes to the list of tests doesn't require changes to the code using it. Signed-off-by: Matt Fleming <matt.fleming@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Kanaka Juvva <kanaka.d.juvva@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vikas Shivappa <vikas.shivappa@intel.com> Cc: Vince Weaver <vince@deater.net> Link: http://lkml.kernel.org/r/1441479742-15402-2-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf test: Add entry to test cpu topologyKan Liang2015-09-144-0/+121
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch test cpu core_id and socket_id which are stored in perf_env. Commiter note: # perf test topo 40: Test topology in session: Ok # perf test -v topo 40: Test topology in session: --- start --- test child forked, pid 31767 templ file: /tmp/perf-test-VTZ1PL CPU 0, core 0, socket 0 CPU 1, core 1, socket 0 CPU 2, core 0, socket 0 CPU 3, core 1, socket 0 test child finished with 0 ---- end ---- Test topology in session: Ok # Based-on-a-patch-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Kan Liang <kan.liang@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/1441357111-64522-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tools: Switch to tracing_path interface on appropriate placesJiri Olsa2015-09-143-27/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using tracing_path interface on several places, that more or less copy the functionality of tracing_path interface. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Raphael Beamonte <raphael.beamonte@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1441180605-24737-16-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | tools lib api fs: Replace debugfs/tracefs objects interface with fs.cJiri Olsa2015-09-143-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Switching to the fs.c related filesystem framework. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Raphael Beamonte <raphael.beamonte@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1441180605-24737-14-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tests: Print objdump/dso buffers if they don't matchJan Stancek2015-09-141-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jan Stancek <jstancek@redhat.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/d0f42f786bc0e965918e0f422df25617a12a4021.1441181335.git.jstancek@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | perf tests: Stop reading if objdump output crossed sectionsJan Stancek2015-09-141-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | objdump output can span across multiple sections: Disassembly of section .text: 0000000000000008 <crc32c+0x8>: 8: 48 89 e5 mov %rsp,%rbp b: 53 push %rbx c: 8b 01 mov (%rcx),%eax <snip> 6b: 90 nop Disassembly of section .init.text: 0000000000000008 <init_module+0x8>: 8: 00 00 add %al,(%rax) a: 00 00 add %al,(%rax) c: 48 89 e5 Stop further reading if an address starts going backwards, assuming we crossed sections. Signed-off-by: Jan Stancek <jstancek@redhat.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/9d1ea95e5f9884fdff1be6f761a2feabef37412c.1441181335.git.jstancek@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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