hi, adding support to read sample values through the PERF_SAMPLE_READ sample type. It's now possible to specify 'S' modifier for an event and get its sample value by PERF_SAMPLE_READ.
For group the 'S' modifier will enable sampling only for the leader and read all the group member by PERF_SAMPLE_READ smple type with PERF_FORMAT_GROUP read format. This patchset is based on group report patches by Namhyung Kim: http://lwn.net/Articles/518569/ Example: (making sample on cycles, reading both cycles and cache-misses by PERF_SAMPLE_READ/PERF_FORMAT_GROUP) # ./perf record -e '{cycles,cache-misses}:S' ls ... # ./perf report --group --show-total-period --stdio # ======== # captured on: Sat Oct 20 16:53:39 2012 ... # group: {cycles,cache-misses} # ======== # # Samples: 86 of event 'anon group { cycles, cache-misses }' # Event count (approx.): 34863674 # # Overhead Period Command Shared Object Symbol # ................ ........................ ....... ................. ................................ # 16.56% 19.47% 5773450 475 ls [kernel.kallsyms] [k] native_sched_clock 10.87% 0.74% 3789088 18 ls [kernel.kallsyms] [k] rtl8169_interrupt 9.82% 15.86% 3423364 387 ls [kernel.kallsyms] [k] mark_lock 8.43% 17.75% 2938384 433 ls ld-2.14.90.so [.] do_lookup_x 6.79% 20.86% 2365622 509 ls ls [.] calculate_columns 6.36% 0.61% 2216808 15 ls [kernel.kallsyms] [k] lock_release ... Attached patches: 01/11 perf: Add PERF_EVENT_IOC_ID ioctl to return event ID 02/11 perf: Do not get values from disabled counters in group format read 03/11 perf tool: Use PERF_EVENT_IOC_ID perf ioctl to read event id 04/11 perf tool: Add support for parsing PERF_SAMPLE_READ sample type 05/11 perf tool: Fix event ID retrieval for group format read case 06/11 perf tool: Add perf_evlist__id2sid function to get event ID related data 07/11 perf tool: Add PERF_SAMPLE_READ sample related processing 08/11 perf tool: Add 'S' event/group modifier to read sample value 09/11 perf test: Add parse events tests for leader sampling 10/11 perf tool: Display period values for all group members 11/11 perf record: Fix mmap error output condition wbr, jirka Cc: Arnaldo Carvalho de Melo <a...@ghostprotocols.net> Cc: Peter Zijlstra <a.p.zijls...@chello.nl> Cc: Ingo Molnar <mi...@elte.hu> Cc: Paul Mackerras <pau...@samba.org> Cc: Corey Ashford <cjash...@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Namhyung Kim <namhy...@kernel.org> --- include/linux/perf_event.h | 1 + kernel/events/core.c | 27 ++++++++++++++++++--- tools/perf/Documentation/perf-list.txt | 1 + tools/perf/builtin-record.c | 3 ++- tools/perf/ui/hist.c | 46 +++++++++++++++++++++++++++++++---- tools/perf/util/event.h | 18 ++++++++++++++ tools/perf/util/evlist.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++------------ tools/perf/util/evlist.h | 4 ++++ tools/perf/util/evsel.c | 54 +++++++++++++++++++++++++++++++++++++++-- tools/perf/util/evsel.h | 4 ++++ tools/perf/util/parse-events-test.c | 117 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/parse-events.c | 6 +++++ tools/perf/util/parse-events.l | 2 +- tools/perf/util/session.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 14 files changed, 448 insertions(+), 27 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
