static int perf_proc_irq(void)
{
unsigned long snapshot;
/*
* It would be nice to do this as a loop, but we don't have
* indirect access to CP0 registers.
*/
snapshot = read_c0_perfcntr0();
if ((long)snapshot < 0) {
extencount[0] +=
(unsigned long long)((unsigned)read_c0_perfcntr0());
write_c0_perfcntr0(0);
}
snapshot = read_c0_perfcntr1();
if ((long)snapshot < 0) {
extencount[1] +=
(unsigned long long)((unsigned)read_c0_perfcntr1());
write_c0_perfcntr1(0);
}
snapshot = read_c0_perfcntr2();
if ((long)snapshot < 0) {
extencount[2] +=
(unsigned long long)((unsigned)read_c0_perfcntr2());
write_c0_perfcntr2(0);
}
snapshot = read_c0_perfcntr3();
if ((long)snapshot < 0) {
extencount[3] +=
(unsigned long long)((unsigned)read_c0_perfcntr3());
write_c0_perfcntr3(0);
}
return 0;
}
static int proc_read_perf(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int totalen = 0;
int len;
len = sprintf(page, "PerfCnt[0].Ctl : 0x%08x\n", read_c0_perfctrl0());
totalen += len;
page += len;
len = sprintf(page, "PerfCnt[0].Cnt : %Lu\n",
extencount[0] + (unsigned long long)((unsigned)read_c0_perfcntr0()));
totalen += len;
page += len;
len = sprintf(page, "PerfCnt[1].Ctl : 0x%08x\n", read_c0_perfctrl1());
totalen += len;
page += len;
len = sprintf(page, "PerfCnt[1].Cnt : %Lu\n",
extencount[1] + (unsigned long long)((unsigned)read_c0_perfcntr1()));
totalen += len;
page += len;
len = sprintf(page, "PerfCnt[2].Ctl : 0x%08x\n", read_c0_perfctrl2());
totalen += len;
page += len;
len = sprintf(page, "PerfCnt[2].Cnt : %Lu\n",
extencount[2] + (unsigned long long)((unsigned)read_c0_perfcntr2()));
totalen += len;
page += len;
len = sprintf(page, "PerfCnt[3].Ctl : 0x%08x\n", read_c0_perfctrl3());
totalen += len;
page += len;
len = sprintf(page, "PerfCnt[3].Cnt : %Lu\n",
extencount[3] + (unsigned long long)((unsigned)read_c0_perfcntr3()));
totalen += len;
page += len;
return totalen;
}
void read_cntrs(unsigned int *c0, unsigned int *c1)
{
*c0 = read_c0_perfcntr0();
*c1 = read_c0_perfcntr1();
}
