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80 lines
1.8 KiB
C
80 lines
1.8 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 <linux/atomic.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 <linux/seq_file.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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atomic_t smtc_fpu_recoveries;
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static int smtc_proc_show(struct seq_file *m, void *v)
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{
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int i;
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extern unsigned long ebase;
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seq_printf(m, "SMTC Status Word: 0x%08x\n", smtc_status);
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seq_printf(m, "Config7: 0x%08x\n", read_c0_config7());
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seq_printf(m, "EBASE: 0x%08lx\n", ebase);
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seq_printf(m, "Counter Interrupts taken per CPU (TC)\n");
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for (i=0; i < NR_CPUS; i++)
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seq_printf(m, "%d: %ld\n", i, smtc_cpu_stats[i].timerints);
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seq_printf(m, "Self-IPIs by CPU:\n");
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for(i = 0; i < NR_CPUS; i++)
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seq_printf(m, "%d: %ld\n", i, smtc_cpu_stats[i].selfipis);
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seq_printf(m, "%d Recoveries of \"stolen\" FPU\n",
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atomic_read(&smtc_fpu_recoveries));
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return 0;
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}
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static int smtc_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, smtc_proc_show, NULL);
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}
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static const struct file_operations smtc_proc_fops = {
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.open = smtc_proc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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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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proc_create("smtc", 0444, NULL, &smtc_proc_fops);
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}
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