linux/tools/perf/builtin-script.c, branch v4.6

perf script: Use readdir() instead of deprecated readdir_r()

2016-05-12T14:26:57Z

The readdir() function is thread safe as long as just one thread uses a DIR, which is the case in 'perf script', so, to avoid breaking the build with glibc-2.23.90 (upcoming 2.24), use it instead of readdir_r(). See: http://man7.org/linux/man-pages/man3/readdir.3.html "However, in modern implementations (including the glibc implementation), concurrent calls to readdir() that specify different directory streams are thread-safe. In cases where multiple threads must read from the same directory stream, using readdir() with external synchronization is still preferable to the use of the deprecated readdir_r(3) function." Noticed while building on a Fedora Rawhide docker container. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-mt3xz7n2hl49ni2vx7kuq74g@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf script: Remove lots of unused arguments

2016-03-23T15:11:03Z

Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Signed-off-by: Arnaldo Carvalho de Melo

perf thread: Rename perf_event__preprocess_sample_addr to thread__resolve

2016-03-23T15:03:08Z

Since none of the perf_event fields are used anymore, just the perf_sample ones, and since this resolves to (map, symbol) from data structures within struct thread, rename it to thread__resolve and make the argument ordering similar to the one in machine__resolve(). Cc: Adrian Hunter Cc: Hemant Kumar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Ravi Bangoria Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-2b33hs9bp550tezzlhl4kejh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf machine: Rename perf_event__preprocess_sample to machine__resolve

2016-03-23T15:03:08Z

Since we only deal with fields in the passed struct perf_sample move this method to struct machine, that is where the perf_sample fields will be resolved to a struct addr_location, i.e. thread, map, symbol, etc. Cc: Adrian Hunter Cc: Hemant Kumar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Ravi Bangoria Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-a1ww2lbm2vbuqsv4p7ilubu9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add cpumode to struct perf_sample

2016-03-23T15:03:07Z

To avoid parsing event->header.misc in many locations. This will also allow setting perf.sample.{ip,cpumode} in a single place, from tracepoint fields, as needed by 'perf kvm' with PPC guests, where the guest hardware counters is not available at the host. Cc: Adrian Hunter Cc: Hemant Kumar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Ravi Bangoria Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-qp3yradhyt6q3wl895b1aat0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove misplaced __maybe_unused

2016-03-23T15:03:04Z

All over the tree. Cc: David Ahern cc: Jiri Olsa Cc: Namhyung Kim Cc: Ravi Bangoria Link: http://lkml.kernel.org/n/tip-8nzhnokxyp8y4v7gf0j00oyb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf script: Remove duplicated code and needless script_spec__findnew()

2016-02-25T19:14:33Z

script_spec_register() called two functions: script_spec__find() and script_spec__findnew(). But this way script_spec__find() gets called two times, directly and via script_spec__findnew(). So remove script_spec__findnew() and make script_spec_register() only call once script_spec__find(). Signed-off-by: Taeung Song Acked-by: Jiri Olsa Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1456413190-12378-1-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf script: Print bpf-output events in 'perf script'

2016-02-24T15:09:24Z

This patch allows 'perf script' output messages from BPF program. For example, use test_bpf_output_3.c at the end of this commit message, # ./perf record -e bpf-output/no-inherit,name=evt/ \ -e ./test_bpf_output_3.c/map:channel.event=evt/ \ usleep 100000 # ./perf script usleep 4882 21384.532523: evt: ffffffff810e97d1 sys_nanosleep ([kernel.kallsyms]) BPF output: 0000: 52 61 69 73 65 20 61 20 Raise a 0008: 42 50 46 20 65 76 65 6e BPF even 0010: 74 21 00 00 t!.. BPF string: "Raise a BPF event!" usleep 4882 21384.632606: evt: ffffffff8105c609 kretprobe_trampoline_holder ([kernel.kallsyms BPF output: 0000: 52 61 69 73 65 20 61 20 Raise a 0008: 42 50 46 20 65 76 65 6e BPF even 0010: 74 21 00 00 t!.. BPF string: "Raise a BPF event!" Two samples from BPF output are printed by both binary and string format. If BPF program output something unprintable, string format is suppressed. /************************ BEGIN **************************/ #include 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)) static u64 (*ktime_get_ns)(void) = (void *)BPF_FUNC_ktime_get_ns; static int (*trace_printk)(const char *fmt, int fmt_size, ...) = (void *)BPF_FUNC_trace_printk; static int (*get_smp_processor_id)(void) = (void *)BPF_FUNC_get_smp_processor_id; static int (*perf_event_output)(void *, struct bpf_map_def *, int, void *, unsigned long) = (void *)BPF_FUNC_perf_event_output; struct bpf_map_def SEC("maps") channel = { .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, .key_size = sizeof(int), .value_size = sizeof(u32), .max_entries = __NR_CPUS__, }; static inline int __attribute__((always_inline)) func(void *ctx, int type) { char output_str[] = "Raise a BPF event!"; perf_event_output(ctx, &channel, get_smp_processor_id(), &output_str, sizeof(output_str)); return 0; } SEC("func_begin=sys_nanosleep") int func_begin(void *ctx) {return func(ctx, 1);} SEC("func_end=sys_nanosleep%return") int func_end(void *ctx) { return func(ctx, 2);} char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; /************************* END ***************************/ Signed-off-by: Wang Nan Tested-by: Arnaldo Carvalho de Melo Cc: Brendan Gregg Cc: Jiri Olsa Cc: Li Zefan Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1456312845-111583-3-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo

perf script: Display data_src values

2016-02-24T13:32:11Z

perf script: Display addr/data_src/weight columns for raw events

2016-02-23T15:20:21Z

Adding addr/data_src/weight columns for raw events. Example: $ perf script ... true 11883 322960.489590: ... ffff8801aa0b8400 68501042 246 ffffffff813b2cd true 11883 322960.489600: ... ffff8800b90b38d8 68501042 251 ffffffff811d0b7 true 11883 322960.489612: ... ffff880196893130 6a100142 94 ffffffff8177fb8 true 11883 322960.489637: ... ffff880164277b40 68100842 101 ffffffff813b2cd true 11883 322960.489683: ... ffff880035d3d818 68501042 201 ffffffff811d0b7 true 11883 322960.489733: ... 7fb9616efcf0 68100242 199 7fb961aaba9 true 11883 322960.489818: ... ffffea000481c39c 6a100142 122 ffffffff811b634 ^^^^^^^^^^^^^^^^ ^^^^^^^^ ^^^ addr data_src weight Signed-off-by: Jiri Olsa Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1455525293-8671-23-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo