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/*
* xen performance counters
*/
#include <xeno/lib.h>
#include <xeno/smp.h>
#include <xeno/time.h>
#include <xeno/perfc.h>
#include <xeno/keyhandler.h>
/* used for different purposes in perfc.h and here */
#undef PERFCOUNTER
#undef PERFCOUNTER_CPU
#undef PERFCOUNTER_ARRAY
#define PERFCOUNTER( var, name ) "[0]"name"\0",
#define PERFCOUNTER_CPU( var, name ) "C"name"\0",
#define PERFCOUNTER_ARRAY( var, name, size ) "["#size"]"name"\0",
char* perfc_name[] = {
#include <xeno/perfc_defn.h>
};
struct perfcounter_t perfcounters;
void __perfc_print (unsigned long counter[], int offset)
{
int loop;
int total_size = 0;
int element_size = 0;
int cpus = 0;
int num = 0;
for (loop = 0; loop < sizeof(perfc_name) / sizeof(char *); loop++) {
if (perfc_name[loop][0] == 'C') {
element_size = NR_CPUS;
cpus = 1;
} else {
num = sscanf (perfc_name[loop], "[%d]", &element_size);
}
total_size += element_size == 0 ? 1 : element_size;
if (total_size > offset) break;
}
if (loop == sizeof(perfc_name) / sizeof(char *)) {
printf ("error: couldn't find variable\n");
return;
}
if (element_size == 0) { /* single counter */
printf ("%10lu 0x%08lx %s\n", counter[0], counter[0],
perfc_name[loop] + 2 + num);
} else if (cpus) { /* counter per CPU */
for (loop = 0; loop < smp_num_cpus; loop++) {
printf ("%10lu 0x%08lx cpu[%02d] %s\n",
counter[loop], counter[loop],
loop, perfc_name[loop]);
}
} else { /* show entire array */
for (loop = 0; loop < element_size; loop++) {
printf ("%10lu 0x%08lx %s:%d\n",
counter[loop], counter[loop],
perfc_name[loop] + 2 + num, loop);
}
}
return;
}
void perfc_printall (u_char key, void *dev_id, struct pt_regs *regs)
{
int loop, idx;
int element_size;
int cpus=0;
int num = 0;
s_time_t now = NOW();
unsigned long *counters = (unsigned long *)&perfcounters;
printf ("xen performance counters: now=0x%08X%08X\n",
(u32)(now>>32), (u32)now);
for (loop = 0; loop < sizeof(perfc_name) / sizeof(char *); loop++) {
if (perfc_name[loop][0] == 'C') {
element_size = NR_CPUS;
cpus = 1;
} else {
num = sscanf (perfc_name[loop], "[%d]", &element_size);
}
for (idx = 0; idx < (element_size ? element_size : 1); idx++) {
if (cpus) {
if (idx < smp_num_cpus)
printf ("%10ld 0x%08lx cpu[%02d] %s\n",
*counters, *counters, idx, perfc_name[loop] + 1);
} else if (element_size) {
printf ("%10ld 0x%08lx %s:%d\n",
*counters, *counters, perfc_name[loop] + num + 2, idx);
} else {
printf ("%10ld 0x%08lx %s\n",
*counters, *counters, perfc_name[loop] + num + 2);
}
counters++;
}
}
//perfc_reset( key, dev_id, regs );
return;
}
void perfc_reset (u_char key, void *dev_id, struct pt_regs *regs)
{
s_time_t now = NOW();
printk ("xen performance counters reset: now=0x%08X%08X\n",
(u32)(now>>32), (u32)now);
memset (&perfcounters, 0, sizeof(perfcounters));
}
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