b439e431bf
passing a pointer to an opaque clockframe structure and requiring the MD code to supply CLKF_FOO() macros to extract needed values out of the opaque structure, just pass the needed values directly. In practice this means passing the pair (usermode, pc) to hardclock() and profclock() and passing the boolean (usermode) to hardclock_cpu() and hardclock_process(). Other details: - Axe clockframe and CLKF_FOO() macros on all architectures. Basically, all the archs were taking a trapframe and converting it into a clockframe one way or another. Now they can just extract the PC and usermode values directly out of the trapframe and pass it to fooclock(). - Renamed hardclock_process() to hardclock_cpu() as the latter is more accurate. - On Alpha, we now run profclock() at hz (profhz == hz) rather than at the slower stathz. - On Alpha, for the TurboLaser machines that don't have an 8254 timecounter, call hardclock() directly. This removes an extra conditional check from every clock interrupt on Alpha on the BSP. There is probably room for even further pruning here by changing Alpha to use the simplified timecounter we use on x86 with the lapic timer since we don't get interrupts from the 8254 on Alpha anyway. - On x86, clkintr() shouldn't ever be called now unless using_lapic_timer is false, so add a KASSERT() to that affect and remove a condition to slightly optimize the non-lapic case. - Change prototypeof arm_handler_execute() so that it's first arg is a trapframe pointer rather than a void pointer for clarity. - Use KCOUNT macro in profclock() to lookup the kernel profiling bucket. Tested on: alpha, amd64, arm, i386, ia64, sparc64 Reviewed by: bde (mostly)
43 lines
866 B
C
43 lines
866 B
C
/*-
|
|
* Kernel interface to machine-dependent clock driver.
|
|
* Garrett Wollman, September 1994.
|
|
* This file is in the public domain.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_CLOCK_H_
|
|
#define _MACHINE_CLOCK_H_
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* i386 to clock driver interface.
|
|
* XXX large parts of the driver and its interface are misplaced.
|
|
*/
|
|
extern int adjkerntz;
|
|
extern int clkintr_pending;
|
|
extern int disable_rtc_set;
|
|
extern int pscnt;
|
|
extern int psdiv;
|
|
extern int statclock_disable;
|
|
extern u_int timer_freq;
|
|
extern int timer0_max_count;
|
|
extern uint64_t tsc_freq;
|
|
extern int tsc_is_broken;
|
|
extern int wall_cmos_clock;
|
|
|
|
/*
|
|
* Driver to clock driver interface.
|
|
*/
|
|
|
|
int acquire_timer2(int mode);
|
|
int release_timer2(void);
|
|
int rtcin(int val);
|
|
int sysbeep(int pitch, int period);
|
|
void init_TSC(void);
|
|
void init_TSC_tc(void);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_CLOCK_H_ */
|