diff options
author | David Woodhouse <dwmw2@infradead.org> | 2006-05-03 13:30:35 +0100 |
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committer | David Woodhouse <dwmw2@infradead.org> | 2006-05-03 13:30:35 +0100 |
commit | edc4ff7c08e9885c40e60c4fb39fa42cc91a0602 (patch) | |
tree | f375d28043dd4457428a841167dc93d760ba9a46 /arch/mips/kernel/smtc-proc.c | |
parent | cbb9a56177b16294ed347ba7fcb1c66c8adb5dc4 (diff) | |
parent | e17df688f7064dae1417ce425dd1e4b71d24d63b (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/mips/kernel/smtc-proc.c')
-rw-r--r-- | arch/mips/kernel/smtc-proc.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/mips/kernel/smtc-proc.c b/arch/mips/kernel/smtc-proc.c new file mode 100644 index 00000000000..6f370999617 --- /dev/null +++ b/arch/mips/kernel/smtc-proc.c @@ -0,0 +1,93 @@ +/* + * /proc hooks for SMTC kernel + * Copyright (C) 2005 Mips Technologies, Inc + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/cpumask.h> +#include <linux/interrupt.h> + +#include <asm/cpu.h> +#include <asm/processor.h> +#include <asm/atomic.h> +#include <asm/system.h> +#include <asm/hardirq.h> +#include <asm/mmu_context.h> +#include <asm/smp.h> +#include <asm/mipsregs.h> +#include <asm/cacheflush.h> +#include <linux/proc_fs.h> + +#include <asm/smtc_proc.h> + +/* + * /proc diagnostic and statistics hooks + */ + +/* + * Statistics gathered + */ +unsigned long selfipis[NR_CPUS]; + +struct smtc_cpu_proc smtc_cpu_stats[NR_CPUS]; + +static struct proc_dir_entry *smtc_stats; + +atomic_t smtc_fpu_recoveries; + +static int proc_read_smtc(char *page, char **start, off_t off, + int count, int *eof, void *data) +{ + int totalen = 0; + int len; + int i; + extern unsigned long ebase; + + len = sprintf(page, "SMTC Status Word: 0x%08x\n", smtc_status); + totalen += len; + page += len; + len = sprintf(page, "Config7: 0x%08x\n", read_c0_config7()); + totalen += len; + page += len; + len = sprintf(page, "EBASE: 0x%08lx\n", ebase); + totalen += len; + page += len; + len = sprintf(page, "Counter Interrupts taken per CPU (TC)\n"); + totalen += len; + page += len; + for (i=0; i < NR_CPUS; i++) { + len = sprintf(page, "%d: %ld\n", i, smtc_cpu_stats[i].timerints); + totalen += len; + page += len; + } + len = sprintf(page, "Self-IPIs by CPU:\n"); + totalen += len; + page += len; + for(i = 0; i < NR_CPUS; i++) { + len = sprintf(page, "%d: %ld\n", i, smtc_cpu_stats[i].selfipis); + totalen += len; + page += len; + } + len = sprintf(page, "%d Recoveries of \"stolen\" FPU\n", + atomic_read(&smtc_fpu_recoveries)); + totalen += len; + page += len; + + return totalen; +} + +void init_smtc_stats(void) +{ + int i; + + for (i=0; i<NR_CPUS; i++) { + smtc_cpu_stats[i].timerints = 0; + smtc_cpu_stats[i].selfipis = 0; + } + + atomic_set(&smtc_fpu_recoveries, 0); + + smtc_stats = create_proc_read_entry("smtc", 0444, NULL, + proc_read_smtc, NULL); +} |