60 lines
1.4 KiB
Text
60 lines
1.4 KiB
Text
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dnl #
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dnl # Ensure the DECLARE_EVENT_CLASS macro is available to non-GPL modules.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_DECLARE_EVENT_CLASS], [
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="-I\$(src)"
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AC_MSG_CHECKING([whether DECLARE_EVENT_CLASS() is available])
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ZFS_LINUX_TRY_COMPILE_HEADER([
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#include <linux/module.h>
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MODULE_LICENSE(ZFS_META_LICENSE);
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#define CREATE_TRACE_POINTS
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#include "conftest.h"
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],[
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trace_zfs_autoconf_event_one(1UL);
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trace_zfs_autoconf_event_two(2UL);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_DECLARE_EVENT_CLASS, 1,
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[DECLARE_EVENT_CLASS() is available])
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],[
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AC_MSG_RESULT(no)
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],[
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#if !defined(_CONFTEST_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _CONFTEST_H
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM zfs
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#include <linux/tracepoint.h>
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DECLARE_EVENT_CLASS(zfs_autoconf_event_class,
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TP_PROTO(unsigned long i),
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TP_ARGS(i),
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TP_STRUCT__entry(
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__field(unsigned long, i)
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),
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TP_fast_assign(
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__entry->i = i;
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),
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TP_printk("i = %lu", __entry->i)
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);
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#define DEFINE_AUTOCONF_EVENT(name) \
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DEFINE_EVENT(zfs_autoconf_event_class, name, \
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TP_PROTO(unsigned long i), \
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TP_ARGS(i))
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DEFINE_AUTOCONF_EVENT(zfs_autoconf_event_one);
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DEFINE_AUTOCONF_EVENT(zfs_autoconf_event_two);
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#endif /* _CONFTEST_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE conftest
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#include <trace/define_trace.h>
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])
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EXTRA_KCFLAGS="$tmp_flags"
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])
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