Differential D38825 Diff 124177 sys/cddl/dev/dtrace/dtrace_test.c

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sys/cddl/dev/dtrace/dtrace_test.c

/*-		/*-
* Copyright 2008 John Birrell <jb@FreeBSD.org>		* Copyright 2008 John Birrell <jb@FreeBSD.org>
		* Copyright (c) 2023 The FreeBSD Foundation
*		*
		* Portions of this software were developed by Christos Margiolis
		* <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
		*
* Redistribution and use in source and binary forms, with or without		* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions		* modification, are permitted provided that the following conditions
* are met:		* are met:
* 1. Redistributions of source code must retain the above copyright		* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.		* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright		* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the		* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.		* documentation and/or other materials provided with the distribution.
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#include <sys/param.h>		#include <sys/param.h>
#include <sys/systm.h>		#include <sys/systm.h>

#include <sys/conf.h>		#include <sys/conf.h>
#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/module.h>		#include <sys/module.h>
#include <sys/sdt.h>		#include <sys/sdt.h>
#include <sys/sysctl.h>		#include <sys/sysctl.h>
		#include <sys/time.h>
#include <sys/vnode.h>		#include <sys/vnode.h>

SDT_PROVIDER_DEFINE(test);		SDT_PROVIDER_DEFINE(test);

SDT_PROBE_DEFINE7(test, , , sdttest, "int", "int", "int", "int", "int",		SDT_PROBE_DEFINE7(test, , , sdttest, "int", "int", "int", "int", "int",
"int", "int");		"int", "int");

/*		/*
Show All 24 Lines	dtrace_test_sdttest(SYSCTL_HANDLER_ARGS)
else if (val == 0)		else if (val == 0)
return (0);		return (0);

SDT_PROBE7(test, , , sdttest, 1, 2, 3, 4, 5, 6, 7);		SDT_PROBE7(test, , , sdttest, 1, 2, 3, 4, 5, 6, 7);

return (error);		return (error);
}		}

		static __always_inline void
		kinst_test_inline(void)
		{
		struct timeval tv;
		size_t len;

		/*
		* TODO Modify the code so that the function is splitted into multiple
		* DW_AT_ranges.
		*/
		christosAuthorUnsubmitted Done Inline Actions @markj do you have a good idea for this? christos: @markj do you have a good idea for this?
		len = sizeof(struct timeval);
		if (kernel_sysctlbyname(curthread, "kern.boottime", &tv, &len,
		NULL, 0, NULL, 0) != 0)
		return;
		}

		static __noinline void
		kinst_test_fbtconvert(void)
		{
		struct timeval tv;
		size_t len;

		len = sizeof(struct timeval);
		(void) kernel_sysctlbyname(curthread, "kern.boottime", &tv, &len,
		NULL, 0, NULL, 0);
		}

		static int
		kinst_test(SYSCTL_HANDLER_ARGS)
		{
		int val, error;

		val = 0;
		error = sysctl_handle_int(oidp, &val, 0, req);
		if (error \|\| req->newptr == NULL)
		return (error);
		switch (val) {
		case 1:
		kinst_test_inline();
		break;
		case 2:
		kinst_test_fbtconvert();
		break;
		default:
		return (0);
		}

		return (error);
		}

static SYSCTL_NODE(_debug, OID_AUTO, dtracetest,		static SYSCTL_NODE(_debug, OID_AUTO, dtracetest,
CTLFLAG_RD \| CTLFLAG_MPSAFE, 0,		CTLFLAG_RD \| CTLFLAG_MPSAFE, 0,
"");		"");

SYSCTL_PROC(_debug_dtracetest, OID_AUTO, sdttest,		SYSCTL_PROC(_debug_dtracetest, OID_AUTO, sdttest,
CTLTYPE_INT \| CTLFLAG_MPSAFE \| CTLFLAG_RW, NULL, 0, dtrace_test_sdttest,		CTLTYPE_INT \| CTLFLAG_MPSAFE \| CTLFLAG_RW, NULL, 0, dtrace_test_sdttest,
"I", "Trigger the SDT test probe");		"I", "Trigger the SDT test probe");

		SYSCTL_PROC(_debug_dtracetest, OID_AUTO, kinst,
		CTLTYPE_INT \| CTLFLAG_MPSAFE \| CTLFLAG_RW, NULL, 0, kinst_test,
		"I", "Trigger the kinst test functions");

static int		static int
dtrace_test_modevent(module_t mod, int type, void *data)		dtrace_test_modevent(module_t mod, int type, void *data)
{		{
int error = 0;		int error = 0;

switch (type) {		switch (type) {
case MOD_LOAD:		case MOD_LOAD:
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