• Jiri Olsa's avatar
    perf tools: Add perf pmu object to access pmu format definition · cd82a32e
    Jiri Olsa authored
    Adding pmu object which provides interface to pmu's sysfs
    event format definition located at:
      ${sysfs_mount}/bus/event_source/devices/${pmu}/format
    
    Following interface is exported:
      struct perf_pmu* perf_pmu__find(char *name);
      - this function returns pmu object, which is then
        passed as a handle to other interface functions
    
      int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
                           struct list_head *head_terms);
      - this function configures perf_event_attr struct based
        on pmu's format definitions and config terms data,
        containined in head_terms list.
    
    Parser generator is used to retrive the pmu's format definition.
    The generated parser is part of the patch. Added makefile rule
    'pmu-parser' to generate the parser code out of the bison/flex
    sources.
    
    Added builtin test 'Test perf pmu format parsing', which could
    be run like:
    	perf test pmu
    Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
    Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
    Link: http://lkml.kernel.org/n/tip-errz96u1668gj9wlop1zhpht@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    cd82a32e
pmu-flex.c 46.2 KB