92 lines
2 KiB
C
92 lines
2 KiB
C
/*
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* /proc hooks for SMTC kernel
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* Copyright (C) 2005 Mips Technologies, Inc
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/cpumask.h>
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#include <linux/interrupt.h>
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#include <asm/cpu.h>
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#include <asm/processor.h>
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#include <asm/atomic.h>
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#include <asm/system.h>
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#include <asm/hardirq.h>
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#include <asm/mmu_context.h>
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#include <asm/mipsregs.h>
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#include <asm/cacheflush.h>
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#include <linux/proc_fs.h>
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#include <asm/smtc_proc.h>
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/*
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* /proc diagnostic and statistics hooks
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*/
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/*
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* Statistics gathered
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*/
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unsigned long selfipis[NR_CPUS];
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struct smtc_cpu_proc smtc_cpu_stats[NR_CPUS];
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static struct proc_dir_entry *smtc_stats;
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atomic_t smtc_fpu_recoveries;
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static int proc_read_smtc(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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int totalen = 0;
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int len;
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int i;
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extern unsigned long ebase;
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len = sprintf(page, "SMTC Status Word: 0x%08x\n", smtc_status);
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totalen += len;
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page += len;
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len = sprintf(page, "Config7: 0x%08x\n", read_c0_config7());
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totalen += len;
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page += len;
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len = sprintf(page, "EBASE: 0x%08lx\n", ebase);
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totalen += len;
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page += len;
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len = sprintf(page, "Counter Interrupts taken per CPU (TC)\n");
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totalen += len;
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page += len;
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for (i=0; i < NR_CPUS; i++) {
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len = sprintf(page, "%d: %ld\n", i, smtc_cpu_stats[i].timerints);
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totalen += len;
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page += len;
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}
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len = sprintf(page, "Self-IPIs by CPU:\n");
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totalen += len;
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page += len;
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for(i = 0; i < NR_CPUS; i++) {
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len = sprintf(page, "%d: %ld\n", i, smtc_cpu_stats[i].selfipis);
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totalen += len;
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page += len;
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}
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len = sprintf(page, "%d Recoveries of \"stolen\" FPU\n",
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atomic_read(&smtc_fpu_recoveries));
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totalen += len;
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page += len;
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return totalen;
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}
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void init_smtc_stats(void)
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{
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int i;
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for (i=0; i<NR_CPUS; i++) {
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smtc_cpu_stats[i].timerints = 0;
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smtc_cpu_stats[i].selfipis = 0;
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}
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atomic_set(&smtc_fpu_recoveries, 0);
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smtc_stats = create_proc_read_entry("smtc", 0444, NULL,
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proc_read_smtc, NULL);
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}
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