Differential D4315 Diff 10592 sys/cddl/dev/profile/profile.c

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sys/cddl/dev/profile/profile.c

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	struct profile_probe_percpu;			struct profile_probe_percpu;

	#ifdef __mips			#ifdef __mips
	/* bogus */			/* bogus */
	#define PROF_ARTIFICIAL_FRAMES 3			#define PROF_ARTIFICIAL_FRAMES 3
	#endif			#endif

	#ifdef __arm__			#ifdef __arm__
	/*			#define PROF_ARTIFICIAL_FRAMES 3
	* At least on ARMv7, this appears to work quite well.
	*/
	#define PROF_ARTIFICIAL_FRAMES 10
	#endif			#endif

	#ifdef __aarch64__			#ifdef __aarch64__
	/* TODO: verify */			/* TODO: verify */
	#define PROF_ARTIFICIAL_FRAMES 10			#define PROF_ARTIFICIAL_FRAMES 10
	#endif			#endif

	typedef struct profile_probe {			typedef struct profile_probe {
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	static struct cdev *profile_cdev;			static struct cdev *profile_cdev;
	static dtrace_provider_id_t profile_id;			static dtrace_provider_id_t profile_id;
	static hrtime_t profile_interval_min = NANOSEC / 5000; /* 5000 hz */			static hrtime_t profile_interval_min = NANOSEC / 5000; /* 5000 hz */
	static int profile_aframes = 0; /* override */			static int profile_aframes = 0; /* override */

	static sbintime_t			static sbintime_t
	nsec_to_sbt(hrtime_t nsec)			nsec_to_sbt(hrtime_t nsec)
	{			{
				stasUnsubmitted Not Done Inline Actions SYSCTL_INT? stas: SYSCTL_INT?
	time_t sec;			time_t sec;

	/*			/*
	* We need to calculate nsec * 2^32 / 10^9			* We need to calculate nsec * 2^32 / 10^9
	* Seconds and nanoseconds are split to avoid overflow.			* Seconds and nanoseconds are split to avoid overflow.
	*/			*/
	sec = nsec / NANOSEC;			sec = nsec / NANOSEC;
	nsec = nsec % NANOSEC;			nsec = nsec % NANOSEC;
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