This is the continuation (rebased and reworked) of the series posted at https://lkml.org/lkml/2014/5/5/153 (which is V6). I remember to have incremented the version count for the re-send of the first four patches of the series to Peter Z for generic review which got pulled in last year. These patches here are the remaining powerpc part of the original series.
NOTE: This patch series is logical extension and also dependent on the series posted at https://patchwork.ozlabs.org/patch/489544/ Changes in V11 ============== (1) Re-merged all the patches into this series like before (2) One patch got already merged into mainline (3) Dropped couple of patches as suggested (4) Changed the self test case to ignore incomplete branch records (5) Fixed build problem of the self test case on LE (6) Replaced all the direct addressing registers as rN instead in the test (7) Rebased against mainline kernel Changes in V10 (https://lists.ozlabs.org/pipermail/linuxppc-dev/2015-June/130566.html) ============== (1) The patch series is split into two groups now for easier review (2) Changed the 'check_excludes' function as suggested by Daniel (3) Using logical inversion of 'mispred' inside 'insert_branch' function (4) Made 'insert_branch' function inline and changed its last argument Changes in V9 (https://patchwork.ozlabs.org/patch/484242/) ============= (1) Changed some of the commit messages and fixed some typos (2) Variable 'bhrb_users' type changed from int to unsigned int (3) Replaced the last usage of 'get_cpu_var' with 'this_cpu_ptr' (4) Conditional checks for 'cpuhw->bhrb_users' changed to test against zero (5) Updated in-code documentation inside 'check_excludes' function (6) Changed the name & type of 'pred' variable in 'power_pmu_bhrb_read' (7) Changed the name of 'tmp' to 'to_addr' inside 'power_pmu_bhrb_read' (8) Changed return values for branch instruction analysis functions (9) Changed the name of 'flag' variable to 'select_branch' inside 'keep_branch' (10) Fixed one nested conditional statement inside 'keep_branch' function (11) Changed function name from 'update_branch_entry' to 'insert_branch' (12) Fixed copyright and license statements for new selftest related files (13) Improved helper assembly functions with some macro definitions (14) Improved the core test program at various places (15) Added .gitignore file for the new test case Changes in V8 (http://patchwork.ozlabs.org/patch/481848/) ============= (1) Fixed BHRB privilege mode branch filter request processing (2) Dropped branch records where 'from' cannot be fetched (3) Added in-code documenation at various places in the patch series (4) Added one comprehensive seltest case to verify all the filters Changes in V7 ============= (1) Incremented the version count while requesting pull for generic changes Changes in V6 (https://lkml.org/lkml/2014/5/5/153) ============= (1) Rebased the patchset against the master (2) Added "Reviewed-by: Andi Kleen" in the first four patches in the series which changes the generic or X86 perf code. [https://lkml.org/lkml/2014/4/7/130] Changes in V5 (https://lkml.org/lkml/2014/3/7/101) ============= (1) Added a precursor patch to cleanup the indentation problem in power_pmu_bhrb_read (2) Added a precursor patch to re-arrange P8 PMU BHRB filter config which improved the clarity (3) Merged the previous 10th patch into the 8th patch (4) Moved SW based branch analysis code from core perf into code-patching library as suggested by Michael (5) Simplified the logic in branch analysis library (6) Fixed some ambiguities in documentation at various places (7) Added some more in-code documentation blocks at various places (8) Renamed some local variable and function names (9) Fixed some indentation and white space errors in the code (10) Implemented almost all the review comments and suggestions made by Michael Ellerman on V4 patchset (11) Enabled privilege mode SW branch filter (12) Simplified and generalized the SW implemented conditional branch filter (13) PERF_SAMPLE_BRANCH_COND filter is now supported only through SW implementation (14) Adjusted other patches to deal with the above changes Changes in V4 (https://lkml.org/lkml/2013/12/4/168) ============= (1) Changed the commit message for patch (01/10) (2) Changed the patch (02/10) to accommodate review comments from Michael Ellerman (3) Rebased the patchset against latest Linus's tree Changes in V3 (https://lkml.org/lkml/2013/10/16/59) ============= (1) Split the SW branch filter enablement into multiple patches (2) Added PMU neutral SW branch filtering code, PMU specific HW branch filtering code (3) Added new instruction analysis functionality into powerpc code-patching library (4) Changed name for some of the functions (5) Fixed couple of spelling mistakes (6) Changed code documentation in multiple places Changes in V2 (https://lkml.org/lkml/2013/8/30/10) ============= (1) Enabled PPC64 SW branch filtering support (2) Incorporated changes required for all previous comments Anshuman Khandual (10): powerpc/perf: Change name & type of 'pred' in power_pmu_bhrb_read powerpc/perf: Re organize PMU branch filter processing on POWER8 powerpc/perf: Restore privilege level filter support for BHRB powerpc/perf: Re organize BHRB processing powerpc/perf: Change the name of HW PMU branch filter tracking variable powerpc/lib: Add new branch analysis support functions powerpc/perf: Enable SW filtering in branch stack sampling framework powerpc/perf: Change POWER8 PMU configuration to work with SW filters powerpc/perf: Enable privilege mode SW branch filters selftests/powerpc: Add test for BHRB branch filters (HW & SW) arch/powerpc/include/asm/code-patching.h | 15 + arch/powerpc/include/asm/perf_event_server.h | 10 +- arch/powerpc/lib/code-patching.c | 60 +++ arch/powerpc/perf/core-book3s.c | 355 +++++++++++--- arch/powerpc/perf/power8-pmu.c | 70 ++- tools/testing/selftests/powerpc/pmu/Makefile | 11 +- .../testing/selftests/powerpc/pmu/bhrb/.gitignore | 1 + tools/testing/selftests/powerpc/pmu/bhrb/Makefile | 13 + .../selftests/powerpc/pmu/bhrb/bhrb_filters.c | 539 +++++++++++++++++++++ .../selftests/powerpc/pmu/bhrb/bhrb_filters.h | 15 + .../selftests/powerpc/pmu/bhrb/bhrb_filters_asm.S | 257 ++++++++++ tools/testing/selftests/powerpc/pmu/event.h | 5 + 12 files changed, 1263 insertions(+), 88 deletions(-) create mode 100644 tools/testing/selftests/powerpc/pmu/bhrb/.gitignore create mode 100644 tools/testing/selftests/powerpc/pmu/bhrb/Makefile create mode 100644 tools/testing/selftests/powerpc/pmu/bhrb/bhrb_filters.c create mode 100644 tools/testing/selftests/powerpc/pmu/bhrb/bhrb_filters.h create mode 100644 tools/testing/selftests/powerpc/pmu/bhrb/bhrb_filters_asm.S -- 2.1.0 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
