minix/kernel/system/do_sprofile.c
Ben Gras 6f77685609 Split of architecture-dependent and -independent functions for i386,
mainly in the kernel and headers. This split based on work by
Ingmar Alting <iaalting@cs.vu.nl> done for his Minix PowerPC architecture
port.

 . kernel does not program the interrupt controller directly, do any
   other architecture-dependent operations, or contain assembly any more,
   but uses architecture-dependent functions in arch/$(ARCH)/.
 . architecture-dependent constants and types defined in arch/$(ARCH)/include.
 . <ibm/portio.h> moved to <minix/portio.h>, as they have become, for now,
   architecture-independent functions.
 . int86, sdevio, readbios, and iopenable are now i386-specific kernel calls
   and live in arch/i386/do_* now.
 . i386 arch now supports even less 86 code; e.g. mpx86.s and klib86.s have
   gone, and 'machine.protected' is gone (and always taken to be 1 in i386).
   If 86 support is to return, it should be a new architecture.
 . prototypes for the architecture-dependent functions defined in
   kernel/arch/$(ARCH)/*.c but used in kernel/ are in kernel/proto.h
 . /etc/make.conf included in makefiles and shell scripts that need to
   know the building architecture; it defines ARCH=<arch>, currently only
   i386.
 . some basic per-architecture build support outside of the kernel (lib)
 . in clock.c, only dequeue a process if it was ready
 . fixes for new include files

files deleted:
 . mpx/klib.s - only for choosing between mpx/klib86 and -386
 . klib86.s - only for 86

i386-specific files files moved (or arch-dependent stuff moved) to arch/i386/:
 . mpx386.s (entry point)
 . klib386.s
 . sconst.h
 . exception.c
 . protect.c
 . protect.h
 . i8269.c
2006-12-22 15:22:27 +00:00

95 lines
2.3 KiB
C

/* The kernel call that is implemented in this file:
* m_type: SYS_SPROFILE
*
* The parameters for this kernel call are:
* m7_i1: PROF_ACTION (start/stop profiling)
* m7_i2: PROF_MEM_SIZE (available memory for data)
* m7_i3: PROF_FREQ (requested sample frequency)
* m7_i4: PROF_ENDPT (endpoint of caller)
* m7_p1: PROF_CTL_PTR (location of info struct)
* m7_p2: PROF_MEM_PTR (location of memory for data)
*
* Changes:
* 14 Aug, 2006 Created (Rogier Meurs)
*/
#include "../system.h"
#if SPROFILE
/*===========================================================================*
* do_sprofile *
*===========================================================================*/
PUBLIC int do_sprofile(m_ptr)
register message *m_ptr; /* pointer to request message */
{
int proc_nr, i;
vir_bytes vir_dst;
phys_bytes length;
switch(m_ptr->PROF_ACTION) {
case PROF_START:
/* Starting profiling.
*
* Check if profiling is not already running. Calculate physical
* addresses of user pointers. Reset counters. Start CMOS timer.
* Turn on profiling.
*/
if (sprofiling) {
kprintf("SYSTEM: start s-profiling: already started\n");
return EBUSY;
}
isokendpt(m_ptr->PROF_ENDPT, &proc_nr);
vir_dst = (vir_bytes) m_ptr->PROF_CTL_PTR;
length = (phys_bytes) sizeof (int *);
sprof_info_addr = numap_local(proc_nr, vir_dst, length);
vir_dst = (vir_bytes) m_ptr->PROF_MEM_PTR;
length = (phys_bytes) sizeof (char *);
sprof_data_addr = numap_local(proc_nr, vir_dst, length);
sprof_info.mem_used = 0;
sprof_info.total_samples = 0;
sprof_info.idle_samples = 0;
sprof_info.system_samples = 0;
sprof_info.user_samples = 0;
sprof_mem_size = m_ptr->PROF_MEM_SIZE;
init_profile_clock(m_ptr->PROF_FREQ);
sprofiling = 1;
return OK;
case PROF_STOP:
/* Stopping profiling.
*
* Check if profiling is indeed running. Turn off profiling.
* Stop CMOS timer. Copy info struct to user process.
*/
if (!sprofiling) {
kprintf("SYSTEM: stop s-profiling: not started\n");
return EBUSY;
}
sprofiling = 0;
stop_profile_clock();
phys_copy(vir2phys((vir_bytes) &sprof_info),
sprof_info_addr, (phys_bytes) sizeof(sprof_info));
return OK;
default:
return EINVAL;
}
}
#endif /* SPROFILE */