From cd82a32e9924d3a82bd27f830755d23e4ded25bc Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 15 Mar 2012 20:09:17 +0100 Subject: perf tools: Add perf pmu object to access pmu format definition 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: Peter Zijlstra Signed-off-by: Jiri Olsa Link: http://lkml.kernel.org/n/tip-errz96u1668gj9wlop1zhpht@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/pmu.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 tools/perf/util/pmu.h (limited to 'tools/perf/util/pmu.h') diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h new file mode 100644 index 0000000..68c0db9 --- /dev/null +++ b/tools/perf/util/pmu.h @@ -0,0 +1,41 @@ +#ifndef __PMU_H +#define __PMU_H + +#include +#include "../../../include/linux/perf_event.h" + +enum { + PERF_PMU_FORMAT_VALUE_CONFIG, + PERF_PMU_FORMAT_VALUE_CONFIG1, + PERF_PMU_FORMAT_VALUE_CONFIG2, +}; + +#define PERF_PMU_FORMAT_BITS 64 + +struct perf_pmu__format { + char *name; + int value; + DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); + struct list_head list; +}; + +struct perf_pmu { + char *name; + __u32 type; + struct list_head format; + struct list_head list; +}; + +struct perf_pmu *perf_pmu__find(char *name); +int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, + struct list_head *head_terms); + +int perf_pmu_wrap(void); +void perf_pmu_error(struct list_head *list, char *name, char const *msg); + +int perf_pmu__new_format(struct list_head *list, char *name, + int config, unsigned long *bits); +void perf_pmu__set_format(unsigned long *bits, long from, long to); + +int perf_pmu__test(void); +#endif /* __PMU_H */ -- cgit v1.1