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kernel/linux-imx6_3.14.28/tools/perf/tests/parse-no-sample-id-all.c 2.29 KB
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  #include <sys/types.h>
  #include <stddef.h>
  
  #include "tests.h"
  
  #include "event.h"
  #include "evlist.h"
  #include "header.h"
  #include "util.h"
  
  static int process_event(struct perf_evlist **pevlist, union perf_event *event)
  {
  	struct perf_sample sample;
  
  	if (event->header.type == PERF_RECORD_HEADER_ATTR) {
  		if (perf_event__process_attr(NULL, event, pevlist)) {
  			pr_debug("perf_event__process_attr failed
  ");
  			return -1;
  		}
  		return 0;
  	}
  
  	if (event->header.type >= PERF_RECORD_USER_TYPE_START)
  		return -1;
  
  	if (!*pevlist)
  		return -1;
  
  	if (perf_evlist__parse_sample(*pevlist, event, &sample)) {
  		pr_debug("perf_evlist__parse_sample failed
  ");
  		return -1;
  	}
  
  	return 0;
  }
  
  static int process_events(union perf_event **events, size_t count)
  {
  	struct perf_evlist *evlist = NULL;
  	int err = 0;
  	size_t i;
  
  	for (i = 0; i < count && !err; i++)
  		err = process_event(&evlist, events[i]);
  
  	if (evlist)
  		perf_evlist__delete(evlist);
  
  	return err;
  }
  
  struct test_attr_event {
  	struct attr_event attr;
  	u64 id;
  };
  
  /**
   * test__parse_no_sample_id_all - test parsing with no sample_id_all bit set.
   *
   * This function tests parsing data produced on kernel's that do not support the
   * sample_id_all bit.  Without the sample_id_all bit, non-sample events (such as
   * mmap events) do not have an id sample appended, and consequently logic
   * designed to determine the id will not work.  That case happens when there is
   * more than one selected event, so this test processes three events: 2
   * attributes representing the selected events and one mmap event.
   *
   * Return: %0 on success, %-1 if the test fails.
   */
  int test__parse_no_sample_id_all(void)
  {
  	int err;
  
  	struct test_attr_event event1 = {
  		.attr = {
  			.header = {
  				.type = PERF_RECORD_HEADER_ATTR,
  				.size = sizeof(struct test_attr_event),
  			},
  		},
  		.id = 1,
  	};
  	struct test_attr_event event2 = {
  		.attr = {
  			.header = {
  				.type = PERF_RECORD_HEADER_ATTR,
  				.size = sizeof(struct test_attr_event),
  			},
  		},
  		.id = 2,
  	};
  	struct mmap_event event3 = {
  		.header = {
  			.type = PERF_RECORD_MMAP,
  			.size = sizeof(struct mmap_event),
  		},
  	};
  	union perf_event *events[] = {
  		(union perf_event *)&event1,
  		(union perf_event *)&event2,
  		(union perf_event *)&event3,
  	};
  
  	err = process_events(events, ARRAY_SIZE(events));
  	if (err)
  		return -1;
  
  	return 0;
  }