kernel/tools/perf/tests/builtin-test.c, branch linux-4.1.y

perf tools: Add kmod_path__parse function

2015-03-21T17:53:41Z

Provides united way of parsing kernel module path into several components. The new kmod_path__parse function and few defines: int __kmod_path__parse(struct kmod_path *m, const char *path, bool alloc_name, bool alloc_ext); #define kmod_path__parse(__m, __p) __kmod_path__parse(__m, __p, false, false) #define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false) #define kmod_path__parse_ext(__m, __p) __kmod_path__parse(__m, __p, false, true) parse kernel module @path and updates @m argument like: @comp - true if @path contains supported compression suffix, false otherwise @kmod - true if @path contains '.ko' suffix in right position, false otherwise @name - if (@alloc_name && @kmod) is true, it contains strdup-ed base name of the kernel module without suffixes, otherwise strudup-ed base name of @path @ext - if (@alloc_ext && @comp) is true, it contains strdup-ed string the compression suffix It returns 0 if there's no strdup error, -ENOMEM otherwise. Signed-off-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-9t6eqg8j610r94l743hkntiv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add the bash completion for listing subsubcommands of perf test

2015-03-19T16:52:54Z

The bash completion does not support listing subsubcommands for 'perf test ', so fix it. Example: Before this patch: $ perf test $ As shown above, the subsubcommands of perf test does not come out. After this patch: $ perf test list As shown above, the subsubcommands of perf test can come out now. Signed-off-by: Yunlong Song Tested-by: Arnaldo Carvalho de Melo Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1426685758-25488-11-git-send-email-yunlong.song@huawei.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: fix typo in python test

2014-11-19T15:33:47Z

Library loading in python syntax should be 'import perf', not 'use perf'. Signed-off-by: WANG Chao Cc: Adrian Hunter Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1415780826-13250-1-git-send-email-chaowang@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove hists from evsel

2014-10-14T20:32:52Z

Now tools that deals want to have an hists per evsel need to call hists__init() before creating any evsels, which can be as early as when parsing the command line, so do it before calling parse_options(). The current tools using hists/hist_entries are report, top and annotate, change them to request per evsel hists. This is in preparation for making evsels usable by 3rd party tools, that not necessarily live in perf's source code repository. Acked-by: Borislav Petkov Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jean Pihet Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-usjx2la743f10ippj7p1b20x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

tools lib api: Adopt fdarray class from perf's evlist

2014-09-25T19:46:55Z

The extensible file description array that grew in the perf_evlist class can be useful for other tools, as it is not something that only evlists need, so move it to tools/lib/api/fd to ease sharing it. v2: Don't use {} like in: libapi_dirs: $(QUIET_MKDIR)mkdir -p $(OUTPUT){fs,fd}/ in Makefiles, as it will not work in some systems, as in ubuntu13.10. v3: Add fd/*.[ch] to LIBAPIKFS_SOURCES (Fix from Jiri Olsa) v4: Leave the fcntl(fd, O_NONBLOCK) in the evlist layer, remains to be checked if it is really needed there, but has no place in the fdarray class (Fix from Jiri Olsa) v5: Remove evlist details from fdarray grow/filter tests. Improve it a bit doing more tests about expected internal state. Cc: Adrian Hunter Cc: Borislav Petkov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-kleuni3hckbc3s0lu6yb9x40@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add pollfd growing test

2014-09-25T19:46:54Z

[acme@ssdandy linux]$ perf test "Add fd" 34: Add fd to pollfd array, making it autogrow : Ok [acme@ssdandy linux]$ perf test -v "Add fd" 34: Add fd to pollfd array, making it autogrow : --- start --- test child forked, pid 19817 before growing array: 2 [ 1, 2 ] after 3rd add_pollfd: 3 [ 1, 2, 35 ] after 4th add_pollfd: 4 [ 1, 2, 35, 88 ] test child finished with 0 ---- end ---- Add fd to pollfd array, making it autogrow: Ok [acme@ssdandy linux]$ Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-smflpyta146bzog7z0effjss@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add test for perf_evlist__filter_pollfd()

2014-09-25T19:46:53Z

That will use a synthetic evlist with just what is touched by this new method to check that it works as expected. Output in verbose mode: $ perf test -v pollfd 33: Filter fds with revents mask in a pollfd array : --- start --- filtering all but pollfd[2]: before: 5 [ 5, 4, 3, 2, 1 ] after: 1 [ 3 ] filtering all but (pollfd[0], pollfd[3]): before: 5 [ 5, 4, 3, 2, 1 ] after: 2 [ 5, 2 ] test child finished with 0 ---- end ---- Filter fds with revents mask in a pollfd array: Ok $ Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-x7c8liszdvc3ocmanf2cet8p@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add a test for tracking with sched_switch

2014-08-22T16:10:35Z

Add a test that checks that sched_switch events and tracking events can be recorded for a workload using the evsel->system_wide and evsel->tracking flags (respectively) with other events sometimes enabled or disabled. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1408129739-17368-2-git-send-email-adrian.hunter@intel.com [ Fix build on fedora14 by using a designated initializer for the sched_switch variable ] Signed-off-by: Arnaldo Carvalho de Melo

perf test: Use strerror_r instead of strerror

2014-08-15T16:07:28Z

Use strerror_r instead of strerror in error messages for thread-safety. Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Namhyung Kim Cc: Naohiro Aota Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20140814022245.3545.91394.stgit@kbuild-fedora.novalocal Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Check recorded kernel version when finding vmlinux

2014-08-13T19:42:21Z

Currently vmlinux_path__init() only tries to find vmlinux file from current directory, /boot and some canonical directories with version number of the running kernel. This can be a problem when reporting old data recorded on a kernel version not running currently. We can use --symfs option for this but it's annoying for user to do it always. As we already have the info in the perf.data file, it can be changed to use it for the search automatically. Before: $ perf report ... # Samples: 4K of event 'cpu-clock' # Event count (approx.): 1067250000 # # Overhead Command Shared Object Symbol # ........ .......... ................. .............................. 71.87% swapper [kernel.kallsyms] [k] recover_probed_instruction After: # Overhead Command Shared Object Symbol # ........ .......... ................. .................... 71.87% swapper [kernel.kallsyms] [k] native_safe_halt This requires to change signature of symbol__init() to receive struct perf_session_env *. Reported-by: Minchan Kim Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Minchan Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1407825645-24586-14-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo