Merge tag 'perf-core-for-mingo' of...
Merge tag 'perf-core-for-mingo' of 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: - Do event name substring search as last resort in 'perf list'. (Arnaldo Carvalho de Melo) E.g.: # perf list clock List of pre-defined events (to be used in -e): cpu-clock [Software event] task-clock [Software event] uncore_cbox_0/clockticks/ [Kernel PMU event] uncore_cbox_1/clockticks/ [Kernel PMU event] kvm:kvm_pvclock_update [Tracepoint event] kvm:kvm_update_master_clock [Tracepoint event] power:clock_disable [Tracepoint event] power:clock_enable [Tracepoint event] power:clock_set_rate [Tracepoint event] syscalls:sys_enter_clock_adjtime [Tracepoint event] syscalls:sys_enter_clock_getres [Tracepoint event] syscalls:sys_enter_clock_gettime [Tracepoint event] syscalls:sys_enter_clock_nanosleep [Tracepoint event] syscalls:sys_enter_clock_settime [Tracepoint event] syscalls:sys_exit_clock_adjtime [Tracepoint event] syscalls:sys_exit_clock_getres [Tracepoint event] syscalls:sys_exit_clock_gettime [Tracepoint event] syscalls:sys_exit_clock_nanosleep [Tracepoint event] syscalls:sys_exit_clock_settime [Tracepoint event] - Reduce min 'perf stat --interval-print/-I' to 10ms. (Kan Liang) perf stat --interval in action: # perf stat -e cycles -I 50 -a usleep $((200 * 1000)) print interval < 100ms. The overhead percentage could be high in some cases. Please proceed with caution. # time counts unit events 0.050233636 48,240,396 cycles 0.100557098 35,492,594 cycles 0.150804687 39,295,112 cycles 0.201032269 33,101,961 cycles 0.201980732 786,379 cycles # - Allow for max_stack greater than PERF_MAX_STACK_DEPTH, as when synthesizing callchains from Intel PT data. (Adrian Hunter) - Allow probing on kmodules without DWARF. (Masami Hiramatsu) - Fix a segfault when processing a perf.data file with callchains using "perf report --call-graph none". (Namhyung Kim) - Fix unresolved COMMs in 'perf top' when -s comm is used. (Namhyung Kim) - Register idle thread in 'perf top'. (Namhyung Kim) - Change 'record.samples' type to unsigned long long, fixing output of number of samples in 32-bit architectures. (Yang Shi) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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