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cb96143def
This commit adds a test of instruction counting using the PMU on powerpc. Although the bulk of the code is architecture agnostic, the code needs to run a precisely sized loop which is implemented in assembler. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
/*
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* Copyright 2013, Michael Ellerman, IBM Corp.
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* Licensed under GPLv2.
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*/
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#ifndef _SELFTESTS_POWERPC_PMU_EVENT_H
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#define _SELFTESTS_POWERPC_PMU_EVENT_H
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#include <unistd.h>
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#include <linux/perf_event.h>
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#include "utils.h"
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struct event {
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struct perf_event_attr attr;
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char *name;
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int fd;
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/* This must match the read_format we use */
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struct {
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u64 value;
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u64 running;
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u64 enabled;
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} result;
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};
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void event_init(struct event *e, u64 config);
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void event_init_named(struct event *e, u64 config, char *name);
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void event_init_opts(struct event *e, u64 config, int type, char *name);
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int event_open_with_options(struct event *e, pid_t pid, int cpu, int group_fd);
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int event_open_with_group(struct event *e, int group_fd);
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int event_open(struct event *e);
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void event_close(struct event *e);
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int event_reset(struct event *e);
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int event_read(struct event *e);
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void event_report_justified(struct event *e, int name_width, int result_width);
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void event_report(struct event *e);
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#endif /* _SELFTESTS_POWERPC_PMU_EVENT_H */
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