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2015-12-17perf tools: Add event_update event unit typeJiri Olsa7-0/+99
Adding unit type 'event update' event, that stores/transfer events unit name. The unit name is part of the perf stat output data. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Rename __alloc() to __new() for consistency ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add event_update user level eventJiri Olsa6-0/+56
It'll serve as a base event for additional event attributes details, that are not part of the attr event. At the moment this event is just a dummy one without any specific functionality. The type value will distinguish the update event details. It'll come in the following patches. The idea for this event is to be extensible for any update that the event might need in the future. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat events fprintf functionsJiri Olsa2-0/+43
Introducing the following functions to display the stat events for raw dump. perf_event__fprintf_stat perf_event__fprintf_stat_round perf_event__fprintf_stat_config Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ s/stat/st/g and s/round/rd/g parameters to fix 'already defined' build error with older distros (e.g. RHEL6.7) ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat round event synthesize functionJiri Olsa5-0/+47
Introduce the perf_event__synthesize_stat_round function to synthesize a 'struct stat_round_event'. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Renamed 'time' parameter to 'evtime' to fix build on older systems ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat round user level eventJiri Olsa4-1/+37
Adding the stat round event to be stored after each stat interval round, so that report tools (report/script) gets notified and process interval data. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat event read functionJiri Olsa2-0/+29
Introducing the perf_event__process_stat_event function to process a 'struct perf_stat' data from a stat event. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat event synthesize functionJiri Olsa5-6/+69
Introduce the perf_event__synthesize_stat function to synthesize a 'struct stat_event'. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat user level eventJiri Olsa4-1/+47
Adding a stat event to store a 'struct perf_counter_values' for a given event/cpu/thread. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat config event read functionJiri Olsa3-0/+32
Introducing the perf_event__read_stat_config function to read a struct perf_stat_config object data from a stat config event. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat config event synthesize functionJiri Olsa6-0/+104
Introduce the perf_event__synthesize_stat_config to synthesize a 'struct perf_stat_config'. Storing the stat config in the form of tag-value pairs will, I believe, sort out future version extensibility issues. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Add stat config user level eventJiri Olsa4-1/+47
Adding the stat config event to pass/store stat config data, so report tools (report/script) know how to interpret stat data. The config data is stored in a 'tag|value' way to allow for easy extension and backwards compatibility. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ stat_config_term_event -> stat_config_event_entry ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf cpu_map: Add perf_event__fprintf_cpu_map functionJiri Olsa2-0/+17
To display a cpu_map event for raw dump. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf cpu_map: Add cpu_map__new_event functionJiri Olsa3-4/+64
Introducing the cpu_map__new_event function to create a struct cpu_map object from a cpu_map event. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf cpu_map: Add cpu_map event synthesize functionJiri Olsa6-0/+216
Introduce the perf_event__synthesize_cpu_map function to synthesize a struct cpu_map. Added generic interface: cpu_map_data__alloc cpu_map_data__synthesize to make the cpu_map synthesizing usable for other events. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf cpu_map: Add cpu_map user level eventJiri Olsa4-1/+81
Adding the cpu_map event to pass/store cpu maps as data in a pipe/perf.data. We store maps in 2 formats: - list of cpus - mask of cpus The format that takes less space is selected transparently in the following patch. The interface is made generic, so we could add the cpumap event data into another event in the following patches. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ cpu_map_data_cpus -> cpu_map_entries, cpu_map_data_mask -> cpu_map_mask ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf thread_map: Add perf_event__fprintf_thread_map functionJiri Olsa2-0/+17
To display a thread_map event for a raw dump. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf thread_map: Add thread_map__new_event functionJiri Olsa3-0/+44
Introducing the thread_map__new_event function to create a struct thread_map object from a thread_map event. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf thread_map: Add thread_map event sythesize functionJiri Olsa5-0/+74
Introduce the perf_event__synthesize_thread_map2 function to synthesize struct thread_map. The perf_event__synthesize_thread_map name is already taken for synthesizing the complete threads data (comm/mmap/fork). Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Rename thread_map_data_event to thread_map_event_entry ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf thread_map: Add thread_map user level eventJiri Olsa4-1/+42
Adding the thread_map event to pass/store thread maps as data in the pipe/perf.data. Storing the thread ID along with the standard comm[16] thread name string. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Kan Liang <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Renamed thread_map_data_event to thread_map_event_entry ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17tools subcmd: Rename subcmd header include guardsJosh Poimboeuf7-21/+22
Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/d8081e7528b25ad91f4154b6a3fd063e93c108ec.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf subcmd: Create subcmd libraryJosh Poimboeuf66-68/+129
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 <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/c0a838d4c878ab17fee50998811612b2281355c1.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17perf tools: Finalize subcmd independenceJosh Poimboeuf11-62/+237
For the files that will be moved to the subcmd library, remove all their perf-specific includes and duplicate any needed functionality. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/6e12946f0f26ce4d543d34db68d9dae3c8551cb9.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-16perf tools: Remove 'perf' from subcmd function and variable namesJosh Poimboeuf9-32/+32
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 <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/bc3ee82b40b8f396b644fa49e0f7260ce442635b.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-16perf tools: Remove subcmd dependencies on strbufJosh Poimboeuf4-41/+66
Introduce and use new astrcat() and astrcatf() functions which replace the strbuf functionality for subcmd. For now they duplicate strbuf's die-on-allocation-error policy. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/957d207e1254406fa11fc2e405e75a7e405aad8f.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-17selftests/powerpc: Add script to test HMI functionalityDaniel Axtens1-0/+89
HMIs (Hypervisor Management|Maintenance Interrupts) are a class of interrupt on POWER systems. HMI support has traditionally been exceptionally difficult to test, however Skiboot ships a tool that, with the correct magic numbers, will inject them. This, therefore, is a first pass at a script to inject HMIs and monitor Linux's response. It injects an HMI on each core on every chip in turn It then watches dmesg to see if it's acknowledged by Linux. On a Tuletta, I observed that we see 8 (or sometimes 9 or more) events per injection, regardless of SMT setting, so we wait for 8 before progressing. It sits in a new scripts/ directory in selftests/powerpc, because it's not designed to be run as part of the regular make selftests process. In particular, it is quite possibly going to end up garding lots of your CPUs, so it should only be run if you know how to undo that. CC: Mahesh J Salgaonkar <[email protected]> Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-12-17selftests/powerpc: Make context_switch touch FP/altivec/vector by defaultMichael Ellerman1-6/+6
Simply because it touches more code paths that way, and therefore tests more things. Signed-off-by: Michael Ellerman <[email protected]> Acked-by: Anton Blanchard <[email protected]>
2015-12-17selftests/powerpc: Make context_switch do something with no argsMichael Ellerman2-9/+24
For ease of use make the context_switch test do something useful when called with no arguments. Default to a 30 second run, using threads, doing yield, and use any online cpu. Make it print out what it's doing to avoid confusion. Signed-off-by: Michael Ellerman <[email protected]> Acked-by: Anton Blanchard <[email protected]>
2015-12-17selftests/powerpc: Import Anton's context_switch2 benchmarkMichael Ellerman3-1/+456
This gets referred to a lot in commit messages, so let's pull it into the selftests. Almost vanilla from: http://ozlabs.org/~anton/junkcode/context_switch2.c Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Acked-by: Anton Blanchard <[email protected]>
2015-12-17selftests/powerpc: Move pick_online_cpu() up into utils.cMichael Ellerman5-28/+31
We want to use this in another test, so make it available at the top of the powerpc selftests tree. Signed-off-by: Michael Ellerman <[email protected]>
2015-12-16perf list: Robustify event printing routineArnaldo Carvalho de Melo1-1/+1
When a43eec304259 ("bpf: introduce bpf_perf_event_output() helper") added PERF_COUNT_SW_BPF_OUTPUT we ended up with a new entry in the event_symbols_sw array that wasn't initialized, thus set to NULL, fix print_symbol_events() to check for that case so that we don't crash if this happens again. (gdb) bt #0 __match_glob (ignore_space=false, pat=<optimized out>, str=<optimized out>) at util/string.c:198 #1 strglobmatch (str=<optimized out>, pat=pat@entry=0x7fffffffe61d "stall") at util/string.c:252 #2 0x00000000004993a5 in print_symbol_events (type=1, syms=0x872880 <event_symbols_sw+160>, max=11, name_only=false, event_glob=0x7fffffffe61d "stall") at util/parse-events.c:1615 #3 print_events (event_glob=event_glob@entry=0x7fffffffe61d "stall", name_only=false) at util/parse-events.c:1675 #4 0x000000000042c79e in cmd_list (argc=1, argv=0x7fffffffe390, prefix=<optimized out>) at builtin-list.c:68 #5 0x00000000004788a5 in run_builtin (p=p@entry=0x871758 <commands+120>, argc=argc@entry=2, argv=argv@entry=0x7fffffffe390) at perf.c:370 #6 0x0000000000420ab0 in handle_internal_command (argv=0x7fffffffe390, argc=2) at perf.c:429 #7 run_argv (argv=0x7fffffffe110, argcp=0x7fffffffe11c) at perf.c:473 #8 main (argc=2, argv=0x7fffffffe390) at perf.c:588 (gdb) p event_symbols_sw[PERF_COUNT_SW_BPF_OUTPUT] $4 = {symbol = 0x0, alias = 0x0} (gdb) A patch to robustify perf to not segfault when the next counter gets added in the kernel will follow this one. Reported-by: Ingo Molnar <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-16perf list: Add support for PERF_COUNT_SW_BPF_OUTArnaldo Carvalho de Melo1-0/+4
When PERF_COUNT_SW_BPF_OUTPUT was added to the kernel we should've added it to tools/perf, where it is used just to list events. This ended up causing a segfault in commands like "perf list stall". Fix it by adding that new software counter. A patch to robustify perf to not segfault when the next counter gets added in the kernel will follow this one. Reported-by: Ingo Molnar <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-16perf tools: Provide subcmd configuration at runtimeJosh Poimboeuf11-12/+67
Create init functions for exec_cmd.c and pager.c. This allows their configuration to be specified at runtime so they can be split out into a separate library which can be used by other programs. Their configuration is stored in a shared subcmd_config struct. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/21f5f6b38da72c985a8dcfa185700d03e7eecd1d.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-16perf tools: Document the fact that parse_options*() may exitJosh Poimboeuf1-0/+3
Generally, calling exit() from a library is bad practice. Eventually these functions might be redesigned so that they don't exit. For now, just document the fact that they do. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/97b1af06cc3b18dd0f49e655d6d659eaa64ecde5.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-16perf tools: Move strlcpy() from perf to tools/lib/string.cJosh Poimboeuf4-23/+33
strlcpy() will be needed by the subcmd library. Move it to the shared tools/lib/string.c file which can be used by other tools. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/71e2804b973bf39ad3d3b9be10f99f2ea630be46.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-16tools build: Fix feature Makefile issues with 'O='Josh Poimboeuf2-47/+48
When building perf binaries outside the source tree with 'make O=<dir>', the auto-detected features get re-tested for every build, which is unnecessary and inconsistent with the behavior seen when building directly in the source tree. Another issue is that 'make O=<dir> clean' doesn't remove the feature files from the object tree. Fix these problems by looking for the binaries in the $(OUTPUT) directory. Signed-off-by: Josh Poimboeuf <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/113bd01530e9761778c60a75a96c65fc59860f68.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-15Merge branch 'rdma-cq.2' of git://git.infradead.org/users/hch/rdma into ↵Doug Ledford2-2/+2
4.5/rdma-cq Signed-off-by: Doug Ledford <[email protected]> Conflicts: drivers/infiniband/ulp/srp/ib_srp.c - Conflicts with changes in ib_srp.c introduced during 4.4-rc updates
2015-12-15perf record: Add record.build-id config optionNamhyung Kim2-1/+26
Post processing at 'perf record' takes a long time on big machines. What it does is to find the build-id of binaries found in the event stream, so that it can make sure, at 'report' time, that the symtabs (be it ELF, kallsyms, etc) being used to resolve symbols are the ones matching the binaries found at 'record' time. Sometimes we just want to skip this processing of events at the end of the session to get quicker results, making sure the binaries haven't changed from 'record' to 'report' time. Add a new config option to control this behavior. The record.build-id config variable can have one of the following values: - cache: post-process data and save/update the binaries into the build-id cache (in ~/.debug). This is the default. - no-cache: post-process the data but not update the build-id cache. Same effect as using the -N option. - skip: skip post-processing and do not update the cache. Same effect as using the -B option. Reported-and-Acked-by: Peter Zijlstra (Intel) <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Taeung Song <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Added some more text to the documentation ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-15libnvdimm, pfn: enable pfn sysfs interface unit testingDan Williams2-0/+50
The unit test infrastructure uses CMA and real memory to emulate nvdimm resources. The call to devm_memremap_pages() can simply be mocked in the same manner as memremap and we mock phys_to_pfn_t() to clear PFN_MAP since these resources are not registered with in the pgmap_radix. Signed-off-by: Dan Williams <[email protected]>
2015-12-14tools: hv: vss: fix the write()'s argument: error -> vss_msgDexuan Cui1-1/+1
Fix the write()'s argument in the daemon code. Cc: Vitaly Kuznetsov <[email protected]> Cc: "K. Y. Srinivasan" <[email protected]> Signed-off-by: Dexuan Cui <[email protected]> Cc: [email protected] Signed-off-by: K. Y. Srinivasan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2015-12-14tools: hv: remove repeated HV_FCOPY stringOlaf Hering1-2/+2
HV_FCOPY is already used as identifier in syslog. Signed-off-by: Olaf Hering <[email protected]> Signed-off-by: K. Y. Srinivasan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2015-12-14tools: hv: report ENOSPC errors in hv_fcopy_daemonOlaf Hering1-3/+17
Currently some "Unspecified error 0x80004005" is reported on the Windows side if something fails. Handle the ENOSPC case and return ERROR_DISK_FULL, which allows at least Copy-VMFile to report a meaning full error. Signed-off-by: Olaf Hering <[email protected]> Signed-off-by: K. Y. Srinivasan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2015-12-15tools/power/acpi: Add userspace AML interface supportLv Zheng3-8/+473
This patch adds a userspace tool to access Linux kernel AML debugger interface. Tow modes are supported by this tool: 1. Interactive: Users are able to launch a debugging shell to talk with in-kernel AML debugger. Note that it's user duty to ensure kernel runtime integrity by using this debugging tool: A. Some control methods evaluated by the users may result in kernel panics if those control methods shouldn't be evaluated by the OSPMs according to the current BIOS/OS configurations. B. Currently if a single stepping evaluation couldn't run to an end, then the synchronization primitives acquired by the evaluation may block normal OSPM control method evaluations. 2. Batch: Users are able to execute debugger commands in a script. Note that in addition to the above duties, it's user duty to ensure script runtime integrity by using this debugging tool in this mode: C. Currently only those commands that are not used for single stepping are suitable to be used in this mode. D. If the execution of the command may cause a failure that could result in an endless kernel execution, the execution of the script may also get blocked. To exit the utility, currently "exit/quit" commands are recommended, but ctrl-C" can also be used. Signed-off-by: Lv Zheng <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
2015-12-14perf record: Support custom vmlinux pathHe Kuang2-2/+24
Make perf-record command support --vmlinux option if BPF_PROLOGUE is on. 'perf record' needs vmlinux as the source of DWARF info to generate prologue for BPF programs, so path of vmlinux should be specified. Short name 'k' has been taken by 'clockid'. This patch skips the short option name and uses '--vmlinux' for vmlinux path. Documentation is also updated. Test result: In a production (or broken) environment: (by: # rm -rf ~/.debug/ # mv /lib/modules/`uname -r`/build/vmlinux /tmp/ ) # ./perf record -e ./test_bpf_base.c ls Failed to find the path for kernel: No such file or directory event syntax error: './test_bpf_base.c' \___ You need to check probing points in BPF file ... # ./perf record --vmlinux /tmp/vmlinux -e ./test_bpf_base.c ls ... [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.011 MB perf.data ] Help messages when build with NO_LIBBPF: # ./perf record -h --transaction sample transaction flags (special events only) --vmlinux <file> vmlinux pathname (not built-in because NO_LIBBPF=1) # ./perf record --vmlinux /tmp/vmlinux ls / Warning: option `vmlinux' is being ignored because NO_LIBBPF=1 ... [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.011 MB perf.data (11 samples) ] Help messages when build with NO_DWARF: # ./perf record -h --transaction sample transaction flags (special events only) --vmlinux <file> vmlinux pathname (not built-in because NO_DWARF=1) Signed-off-by: He Kuang <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Cc: Zefan Li <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Wang Nan <[email protected]> Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-14perf tools: Make options always available, even if required libs not linkedWang Nan4-13/+134
This patch keeps options of perf builtins same in all conditions. If one option is disabled because of compiling options, users should be notified. Masami suggested another implementation in [1] that, by adding a OPTION_NEXT_DEPENDS option before those options in the 'struct option' array, options parser knows an option is disabled. However, in some cases this array is reordered (options__order()). In addition, in parse-option.c that array is const, so we can't simply merge information in decorator option into the affacted option. This patch chooses a simpler implementation that, introducing a set_option_nobuild() function and two option parsing flags. Builtins with such options should call set_option_nobuild() before option parsing. The complexity of this patch is because we want some of options can be skipped safely. In this case their arguments should also be consumed. Options in 'perf record' and 'perf probe' are fixed in this patch. [1] http://lkml.kernel.org/g/50399556C9727B4D88A595C8584AAB3752627CD4@GSjpTKYDCembx32.service.hitachi.net Test result: Normal case: # ./perf probe --vmlinux /tmp/vmlinux sys_write Added new event: probe:sys_write (on sys_write) You can now use it in all perf tools, such as: perf record -e probe:sys_write -aR sleep 1 Build with NO_DWARF=1: # ./perf probe -L sys_write Error: switch `L' is not available because NO_DWARF=1 Usage: perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...] or: perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...] or: perf probe [<options>] --del '[GROUP:]EVENT' ... or: perf probe --list [GROUP:]EVENT ... or: perf probe [<options>] --funcs -L, --line <FUNC[:RLN[+NUM|-RLN2]]|SRC:ALN[+NUM|-ALN2]> Show source code lines. (not built-in because NO_DWARF=1) # ./perf probe -k /tmp/vmlinux sys_write Warning: switch `k' is being ignored because NO_DWARF=1 Added new event: probe:sys_write (on sys_write) You can now use it in all perf tools, such as: perf record -e probe:sys_write -aR sleep 1 # ./perf probe --vmlinux /tmp/vmlinux sys_write Warning: option `vmlinux' is being ignored because NO_DWARF=1 Added new event: [SNIP] # ./perf probe -l Usage: perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...] or: perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...] ... -k, --vmlinux <file> vmlinux pathname (not built-in because NO_DWARF=1) -L, --line <FUNC[:RLN[+NUM|-RLN2]]|SRC:ALN[+NUM|-ALN2]> Show source code lines. (not built-in because NO_DWARF=1) ... -V, --vars <FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT> Show accessible variables on PROBEDEF (not built-in because NO_DWARF=1) --externs Show external variables too (with --vars only) (not built-in because NO_DWARF=1) --no-inlines Don't search inlined functions (not built-in because NO_DWARF=1) --range Show variables location range in scope (with --vars only) (not built-in because NO_DWARF=1) Signed-off-by: Wang Nan <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Zefan Li <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-14perf tools: Convert parse-options.c internal functions to staticJosh Poimboeuf2-18/+9
Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/c027b5f47ec1055077f5650edb1c7ad37c191e6c.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-14perf tools: Move help_unknown_cmd() to its own fileJosh Poimboeuf5-104/+110
help_unknown_cmd() is quite perf-specific because it relies on some perf_config*() functions. Move it and its supporting functions out into a separate file so that help.c can be moved to a library. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/562d918bcaaf340c1ae3e47586b3f0ae33b9918b.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-14perf tools: Remove check for unused PERF_PAGER_IN_USEJosh Poimboeuf1-7/+1
PERF_PAGER_IN_USE doesn't seem to be used anywhere, so let's remove it. This will also make it easier to move pager.c into a separate library. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/ed9e8370db9811746dc590544cf48c36dcfb1731.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-14perf tools: Create pager.hJosh Poimboeuf2-4/+8
Move the 'pager' function prototypes into a new pager.h so that the pager code can be moved out to a library. Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/ba7c316474dd6bfc047e5c6dc4dcab39a982caf5.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-14perf build: Rename LIB_PATH -> API_PATHJosh Poimboeuf1-4/+4
'LIB_PATH' is a misnomer because there are multiple library paths. Signed-off-by: Josh Poimboeuf <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/c10df0b749a27f05cc531fe06b8dd71a329341fa.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-12-14perf build: Fix 'make clean'Josh Poimboeuf1-3/+4
Add some missing files to the 'make clean' target. Reported-and-Acked-by: Jiri Olsa <[email protected]> Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/8b1f5a5bd66a652be071d423e64aaa994254be31.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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