user/sven/linux.git/tools/perf/builtin-diff.c, branch v3.10.2

perf tools: Add support for weight v7 (modified)

2013-04-01T15:19:43Z

perf record has a new option -W that enables weightened sampling. Add sorting support in top/report for the average weight per sample and the total weight sum. This allows to both compare relative cost per event and the total cost over the measurement period. Add the necessary glue to perf report, record and the library. v2: Merge with new hist refactoring. v3: Fix manpage. Remove value check. Rename global_weight to weight and weight to local_weight. v4: Readd sort keys to manpage v5: Move weight to end v6: Move weight to template v7: Rename weight key. Original patch from Andi modified by Stephane Eranian to include ONLY the weight supporting code and apply to pristine 3.8.0-rc4. Signed-off-by: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1359040242-8269-6-git-send-email-eranian@google.com [ committer note: changed to cope with fc5871ed and the hists_link perf test entry ] Signed-off-by: Arnaldo Carvalho de Melo

perf sort: Make setup_sorting returns an error code

2013-02-06T21:09:26Z

Currently the setup_sorting() is called for parsing sort keys and exits if it failed to add the sort key. As it's included in libperf it'd be better returning an error code rather than exiting application inside of the library. Signed-off-by: Namhyung Kim Suggested-by: Arnaldo Carvalho de Melo Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1360130237-9963-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf diff: Use internal rb tree for compute resort

2013-01-24T19:40:06Z

There's no reason to run hists_compute_resort() using output tree. Convert it to use internal tree so that it can remove unnecessary _output_resort. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1355128197-18193-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists: Link hist entries before inserting to an output tree

2013-01-24T19:40:06Z

For matching and/or linking hist entries, they need to be sorted by given sort keys. However current hists__match/link did this on the output trees, so that the entries in the output tree need to be resort before doing it. This looks not so good since we have trees for collecting or collapsing entries before passing them to an output tree and they're already sorted by the given sort keys. Since we don't need to print anything at the time of matching/linking, we can use these internal trees directly instead of bothering with double resort on the output tree. Its only user - at the time of this writing - perf diff can be easily converted to use the internal tree and can save some lines too by getting rid of unnecessary resorting codes. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1355128197-18193-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists: Exchange order of comparing items when collapsing hists

2013-01-24T19:40:05Z

When comparing entries for collapsing put the given entry first, and then the iterated entry. This is not the case of hist_entry__cmp() when called if given sort keys don't require collapsing. So change the order for the sake of consistency. It will be required for matching and/or linking multiple hist entries. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1355128197-18193-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf diff: Remove displacement output option

2012-12-09T11:46:07Z

It seems not very useful, because it's possible and event more convenient to lookup related symbol by name. Also the output value for both 'baseline' and 'new' data is quite apparent from diff output. And above all it complicates hist code factoring ;) Ditching out PERF_HPP__DISPL column with related output functions. Suggested-by: Arnaldo Carvalho de Melo Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Ingo Molnar Cc: Namhyung Kim Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20121206132228.GB1080@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf diff: Change formula methods to work with pair directly

2012-12-09T11:46:07Z

Changing formula methods to operate over hist entry and its pair directly. This makes the code more obvious and readable, instead of all time checking for pair being != NULL. Signed-off-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1354110769-2998-7-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf diff: Change compute methods to work with pair directly

2012-12-09T11:46:06Z

Changing compute methods to operate over hist entry and its pair directly. This makes the code more obvious and readable, instead of all time checking for pair being != NULL. Signed-off-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1354110769-2998-6-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo

perf hists: Introduce perf_hpp__list for period related columns

2012-12-09T11:46:05Z

Adding perf_hpp__list list to register and contain all period related columns the command is interested in. This way we get rid of static array holding all possible columns and enable commands to register their own columns. It'll be handy for diff command in future to process and display data for multiple files. Signed-off-by: Jiri Olsa Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Paul Mackerras Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Namhyung Kim Link: http://lkml.kernel.org/n/tip-kiykge4igrcl7etmpmveto1h@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf diff: Use hists__link when not pairing just with baseline

2012-11-08T21:08:26Z

Previously there were blind spots because we were not looking at symbols that didn't ocurred in the latest run: # perf record usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.018 MB perf.data (~801 samples) ] # perf record usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.018 MB perf.data (~801 samples) ] Before: # perf diff # Event 'cycles' # # Baseline Delta Shared Object Symbol # ........ ....... ................. ............................. # +10.38% [kernel.kallsyms] [k] get_empty_filp +9.51% [kernel.kallsyms] [k] update_sd_lb_stats +9.41% libpopt.so.0.0.0 [.] _init +9.29% [kernel.kallsyms] [k] vma_interval_tree_insert 9.05% +0.12% [kernel.kallsyms] [k] do_sys_open +9.14% [kernel.kallsyms] [k] kfree +8.98% [kernel.kallsyms] [k] free_pages_and_swap_cache +8.78% [kernel.kallsyms] [k] unmap_page_range 9.36% -0.90% [kernel.kallsyms] [k] zap_pte_range 7.60% +0.09% [kernel.kallsyms] [k] find_next_bit +4.37% [kernel.kallsyms] [k] place_entity +3.38% [kernel.kallsyms] [k] __do_page_fault +0.80% [kernel.kallsyms] [k] native_apic_mem_write 0.21% +0.43% [kernel.kallsyms] [k] native_write_msr_safe # So 9.05 + 9.36 + 7.60 + 0.21 != 100% Now using the recently introduced hists__link we can see the whole picture: # perf diff # Event 'cycles' # # Baseline Delta Shared Object Symbol # ........ ....... ................. ............................. # 8.44% -8.44% [kernel.kallsyms] [k] _raw_spin_lock 9.05% -9.05% [kernel.kallsyms] [k] sha_transform 10.55% -10.55% [kernel.kallsyms] [k] __d_lookup_rcu +10.38% [kernel.kallsyms] [k] get_empty_filp 17.70% -17.70% [kernel.kallsyms] [k] kmem_cache_free +9.51% [kernel.kallsyms] [k] update_sd_lb_stats +9.41% libpopt.so.0.0.0 [.] _init +9.29% [kernel.kallsyms] [k] vma_interval_tree_insert 9.05% +0.12% [kernel.kallsyms] [k] do_sys_open +9.14% [kernel.kallsyms] [k] kfree +8.98% [kernel.kallsyms] [k] free_pages_and_swap_cache +8.78% [kernel.kallsyms] [k] unmap_page_range 9.36% -0.90% [kernel.kallsyms] [k] zap_pte_range 7.60% +0.09% [kernel.kallsyms] [k] find_next_bit +4.37% [kernel.kallsyms] [k] place_entity +3.38% [kernel.kallsyms] [k] __do_page_fault 4.01% -4.01% [kernel.kallsyms] [k] handle_pte_fault 9.27% -9.27% [kernel.kallsyms] [k] find_get_page 0.78% -0.78% [kernel.kallsyms] [k] rcu_irq_enter 0.57% -0.57% [kernel.kallsyms] [k] finish_task_switch 4.25% -4.25% [kernel.kallsyms] [k] run_timer_softirq +0.80% [kernel.kallsyms] [k] native_apic_mem_write 0.21% +0.43% [kernel.kallsyms] [k] native_write_msr_safe 9.16% -9.16% ld-2.12.so [.] close # Now: 8.44 + 9.05 + 10.55 + 17.70 + 9.05 + 9.36 + 7.60 + 4.01 + 9.27 + 0.78 + 0.57 + 4.25 + 0.21 + 9.16 == 100% Cc: David Ahern 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-jeq55qdgby1745bs8r9sscdh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo