[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / misc / sgi-gru / gruprocfs.c

/*
 * SN Platform GRU Driver
 *
 *              PROC INTERFACES
 *
 * This file supports the /proc interfaces for the GRU driver
 *
 *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/proc_fs.h>
#include <linux/device.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include "gru.h"
#include "grulib.h"
#include "grutables.h"

#define printstat(s, f)		printstat_val(s, &gru_stats.f, #f)

static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id)
{
	unsigned long val = atomic_long_read(v);

	seq_printf(s, "%16lu %s\n", val, id);
}

static int statistics_show(struct seq_file *s, void *p)
{
	printstat(s, vdata_alloc);
	printstat(s, vdata_free);
	printstat(s, gts_alloc);
	printstat(s, gts_free);
	printstat(s, gms_alloc);
	printstat(s, gms_free);
	printstat(s, gts_double_allocate);
	printstat(s, assign_context);
	printstat(s, assign_context_failed);
	printstat(s, free_context);
	printstat(s, load_user_context);
	printstat(s, load_kernel_context);
	printstat(s, lock_kernel_context);
	printstat(s, unlock_kernel_context);
	printstat(s, steal_user_context);
	printstat(s, steal_kernel_context);
	printstat(s, steal_context_failed);
	printstat(s, nopfn);
	printstat(s, asid_new);
	printstat(s, asid_next);
	printstat(s, asid_wrap);
	printstat(s, asid_reuse);
	printstat(s, intr);
	printstat(s, intr_cbr);
	printstat(s, intr_tfh);
	printstat(s, intr_spurious);
	printstat(s, intr_mm_lock_failed);
	printstat(s, call_os);
	printstat(s, call_os_wait_queue);
	printstat(s, user_flush_tlb);
	printstat(s, user_unload_context);
	printstat(s, user_exception);
	printstat(s, set_context_option);
	printstat(s, check_context_retarget_intr);
	printstat(s, check_context_unload);
	printstat(s, tlb_dropin);
	printstat(s, tlb_preload_page);
	printstat(s, tlb_dropin_fail_no_asid);
	printstat(s, tlb_dropin_fail_upm);
	printstat(s, tlb_dropin_fail_invalid);
	printstat(s, tlb_dropin_fail_range_active);
	printstat(s, tlb_dropin_fail_idle);
	printstat(s, tlb_dropin_fail_fmm);
	printstat(s, tlb_dropin_fail_no_exception);
	printstat(s, tfh_stale_on_fault);
	printstat(s, mmu_invalidate_range);
	printstat(s, mmu_invalidate_page);
	printstat(s, flush_tlb);
	printstat(s, flush_tlb_gru);
	printstat(s, flush_tlb_gru_tgh);
	printstat(s, flush_tlb_gru_zero_asid);
	printstat(s, copy_gpa);
	printstat(s, read_gpa);
	printstat(s, mesq_receive);
	printstat(s, mesq_receive_none);
	printstat(s, mesq_send);
	printstat(s, mesq_send_failed);
	printstat(s, mesq_noop);
	printstat(s, mesq_send_unexpected_error);
	printstat(s, mesq_send_lb_overflow);
	printstat(s, mesq_send_qlimit_reached);
	printstat(s, mesq_send_amo_nacked);
	printstat(s, mesq_send_put_nacked);
	printstat(s, mesq_qf_locked);
	printstat(s, mesq_qf_noop_not_full);
	printstat(s, mesq_qf_switch_head_failed);
	printstat(s, mesq_qf_unexpected_error);
	printstat(s, mesq_noop_unexpected_error);
	printstat(s, mesq_noop_lb_overflow);
	printstat(s, mesq_noop_qlimit_reached);
	printstat(s, mesq_noop_amo_nacked);
	printstat(s, mesq_noop_put_nacked);
	printstat(s, mesq_noop_page_overflow);
	return 0;
}

static ssize_t statistics_write(struct file *file, const char __user *userbuf,
				size_t count, loff_t *data)
{
	memset(&gru_stats, 0, sizeof(gru_stats));
	return count;
}

static int mcs_statistics_show(struct seq_file *s, void *p)
{
	int op;
	unsigned long total, count, max;
	static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
		"cch_interrupt_sync", "cch_deallocate", "tfh_write_only",
		"tfh_write_restart", "tgh_invalidate"};

	seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks");
	for (op = 0; op < mcsop_last; op++) {
		count = atomic_long_read(&mcs_op_statistics[op].count);
		total = atomic_long_read(&mcs_op_statistics[op].total);
		max = mcs_op_statistics[op].max;
		seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
			   count ? total / count : 0, max);
	}
	return 0;
}

static ssize_t mcs_statistics_write(struct file *file,
			const char __user *userbuf, size_t count, loff_t *data)
{
	memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
	return count;
}

static int options_show(struct seq_file *s, void *p)
{
	seq_printf(s, "#bitmask: 1=trace, 2=statistics\n");
	seq_printf(s, "0x%lx\n", gru_options);
	return 0;
}

static ssize_t options_write(struct file *file, const char __user *userbuf,
			     size_t count, loff_t *data)
{
	char buf[20];

	if (count >= sizeof(buf))
		return -EINVAL;
	if (copy_from_user(buf, userbuf, count))
		return -EFAULT;
	buf[count] = '\0';
	if (strict_strtoul(buf, 0, &gru_options))
		return -EINVAL;

	return count;
}

static int cch_seq_show(struct seq_file *file, void *data)
{
	long gid = *(long *)data;
	int i;
	struct gru_state *gru = GID_TO_GRU(gid);
	struct gru_thread_state *ts;
	const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };

	if (gid == 0)
		seq_printf(file, "#%5s%5s%6s%7s%9s%6s%8s%8s\n", "gid", "bid",
			   "ctx#", "asid", "pid", "cbrs", "dsbytes", "mode");
	if (gru)
		for (i = 0; i < GRU_NUM_CCH; i++) {
			ts = gru->gs_gts[i];
			if (!ts)
				continue;
			seq_printf(file, " %5d%5d%6d%7d%9d%6d%8d%8s\n",
				   gru->gs_gid, gru->gs_blade_id, i,
				   is_kernel_context(ts) ? 0 : ts->ts_gms->ms_asids[gid].mt_asid,
				   is_kernel_context(ts) ? 0 : ts->ts_tgid_owner,
				   ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
				   ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
				   mode[ts->ts_user_options &
					GRU_OPT_MISS_MASK]);
		}

	return 0;
}

static int gru_seq_show(struct seq_file *file, void *data)
{
	long gid = *(long *)data, ctxfree, cbrfree, dsrfree;
	struct gru_state *gru = GID_TO_GRU(gid);

	if (gid == 0) {
		seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid",
			   "ctx", "cbr", "dsr", "ctx", "cbr", "dsr");
		seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy",
			   "busy", "busy", "free", "free", "free");
	}
	if (gru) {
		ctxfree = GRU_NUM_CCH - gru->gs_active_contexts;
		cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE;
		dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES;
		seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n",
			   gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree,
			   GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree,
			   ctxfree, cbrfree, dsrfree);
	}

	return 0;
}

static void seq_stop(struct seq_file *file, void *data)
{
}

static void *seq_start(struct seq_file *file, loff_t *gid)
{
	if (*gid < gru_max_gids)
		return gid;
	return NULL;
}

static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
{
	(*gid)++;
	if (*gid < gru_max_gids)
		return gid;
	return NULL;
}

static const struct seq_operations cch_seq_ops = {
	.start	= seq_start,
	.next	= seq_next,
	.stop	= seq_stop,
	.show	= cch_seq_show
};

static const struct seq_operations gru_seq_ops = {
	.start	= seq_start,
	.next	= seq_next,
	.stop	= seq_stop,
	.show	= gru_seq_show
};

static int statistics_open(struct inode *inode, struct file *file)
{
	return single_open(file, statistics_show, NULL);
}

static int mcs_statistics_open(struct inode *inode, struct file *file)
{
	return single_open(file, mcs_statistics_show, NULL);
}

static int options_open(struct inode *inode, struct file *file)
{
	return single_open(file, options_show, NULL);
}

static int cch_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &cch_seq_ops);
}

static int gru_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &gru_seq_ops);
}

/* *INDENT-OFF* */
static const struct file_operations statistics_fops = {
	.open 		= statistics_open,
	.read 		= seq_read,
	.write 		= statistics_write,
	.llseek 	= seq_lseek,
	.release 	= single_release,
};

static const struct file_operations mcs_statistics_fops = {
	.open 		= mcs_statistics_open,
	.read 		= seq_read,
	.write 		= mcs_statistics_write,
	.llseek 	= seq_lseek,
	.release 	= single_release,
};

static const struct file_operations options_fops = {
	.open 		= options_open,
	.read 		= seq_read,
	.write 		= options_write,
	.llseek 	= seq_lseek,
	.release 	= single_release,
};

static const struct file_operations cch_fops = {
	.open 		= cch_open,
	.read 		= seq_read,
	.llseek 	= seq_lseek,
	.release 	= seq_release,
};
static const struct file_operations gru_fops = {
	.open 		= gru_open,
	.read 		= seq_read,
	.llseek 	= seq_lseek,
	.release 	= seq_release,
};

static struct proc_entry {
	char *name;
	umode_t mode;
	const struct file_operations *fops;
	struct proc_dir_entry *entry;
} proc_files[] = {
	{"statistics", 0644, &statistics_fops},
	{"mcs_statistics", 0644, &mcs_statistics_fops},
	{"debug_options", 0644, &options_fops},
	{"cch_status", 0444, &cch_fops},
	{"gru_status", 0444, &gru_fops},
	{NULL}
};
/* *INDENT-ON* */

static struct proc_dir_entry *proc_gru __read_mostly;

static int create_proc_file(struct proc_entry *p)
{
	p->entry = proc_create(p->name, p->mode, proc_gru, p->fops);
	if (!p->entry)
		return -1;
	return 0;
}

static void delete_proc_files(void)
{
	struct proc_entry *p;

	if (proc_gru) {
		for (p = proc_files; p->name; p++)
			if (p->entry)
				remove_proc_entry(p->name, proc_gru);
		proc_remove(proc_gru);
	}
}

int gru_proc_init(void)
{
	struct proc_entry *p;

	proc_gru = proc_mkdir("sgi_uv/gru", NULL);

	for (p = proc_files; p->name; p++)
		if (create_proc_file(p))
			goto err;
	return 0;

err:
	delete_proc_files();
	return -1;
}

void gru_proc_exit(void)
{
	delete_proc_files();
}
Commit	Line	Data
1d09d737 JS	1	/*
	2	* SN Platform GRU Driver
	3	*
	4	* PROC INTERFACES
	5	*
	6	* This file supports the /proc interfaces for the GRU driver
	7	*
	8	* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*/
	24
	25	#include <linux/proc_fs.h>
	26	#include <linux/device.h>
	27	#include <linux/seq_file.h>
	28	#include <linux/uaccess.h>
	29	#include "gru.h"
	30	#include "grulib.h"
	31	#include "grutables.h"
	32
	33	#define printstat(s, f) printstat_val(s, &gru_stats.f, #f)
	34
	35	static void printstat_val(struct seq_file s, atomic_long_t v, char *id)
	36	{
	37	unsigned long val = atomic_long_read(v);
	38
563447d7	39	seq_printf(s, "%16lu %s\n", val, id);
1d09d737 JS	40	}
	41
	42	static int statistics_show(struct seq_file s, void p)
	43	{
	44	printstat(s, vdata_alloc);
	45	printstat(s, vdata_free);
	46	printstat(s, gts_alloc);
	47	printstat(s, gts_free);
563447d7 JS	48	printstat(s, gms_alloc);
563447d7 JS	49	printstat(s, gms_free);
1d09d737 JS	50	printstat(s, gts_double_allocate);
	51	printstat(s, assign_context);
	52	printstat(s, assign_context_failed);
	53	printstat(s, free_context);
836ce679 JS	54	printstat(s, load_user_context);
	55	printstat(s, load_kernel_context);
	56	printstat(s, lock_kernel_context);
	57	printstat(s, unlock_kernel_context);
	58	printstat(s, steal_user_context);
	59	printstat(s, steal_kernel_context);
1d09d737 JS	60	printstat(s, steal_context_failed);
1d09d737 JS	61	printstat(s, nopfn);
1d09d737 JS	62	printstat(s, asid_new);
	63	printstat(s, asid_next);
	64	printstat(s, asid_wrap);
	65	printstat(s, asid_reuse);
	66	printstat(s, intr);
563447d7 JS	67	printstat(s, intr_cbr);
563447d7 JS	68	printstat(s, intr_tfh);
2ce4d4c9	69	printstat(s, intr_spurious);
43884604	70	printstat(s, intr_mm_lock_failed);
1d09d737	71	printstat(s, call_os);
1d09d737 JS	72	printstat(s, call_os_wait_queue);
	73	printstat(s, user_flush_tlb);
	74	printstat(s, user_unload_context);
	75	printstat(s, user_exception);
92b39388	76	printstat(s, set_context_option);
55484c45 JS	77	printstat(s, check_context_retarget_intr);
55484c45 JS	78	printstat(s, check_context_unload);
1d09d737	79	printstat(s, tlb_dropin);
c550222f	80	printstat(s, tlb_preload_page);
1d09d737 JS	81	printstat(s, tlb_dropin_fail_no_asid);
	82	printstat(s, tlb_dropin_fail_upm);
	83	printstat(s, tlb_dropin_fail_invalid);
	84	printstat(s, tlb_dropin_fail_range_active);
	85	printstat(s, tlb_dropin_fail_idle);
	86	printstat(s, tlb_dropin_fail_fmm);
cd1334f0	87	printstat(s, tlb_dropin_fail_no_exception);
270952a9	88	printstat(s, tfh_stale_on_fault);
1d09d737 JS	89	printstat(s, mmu_invalidate_range);
1d09d737 JS	90	printstat(s, mmu_invalidate_page);
1d09d737 JS	91	printstat(s, flush_tlb);
	92	printstat(s, flush_tlb_gru);
	93	printstat(s, flush_tlb_gru_tgh);
	94	printstat(s, flush_tlb_gru_zero_asid);
	95	printstat(s, copy_gpa);
289750d1	96	printstat(s, read_gpa);
1d09d737 JS	97	printstat(s, mesq_receive);
	98	printstat(s, mesq_receive_none);
	99	printstat(s, mesq_send);
	100	printstat(s, mesq_send_failed);
	101	printstat(s, mesq_noop);
	102	printstat(s, mesq_send_unexpected_error);
	103	printstat(s, mesq_send_lb_overflow);
	104	printstat(s, mesq_send_qlimit_reached);
	105	printstat(s, mesq_send_amo_nacked);
	106	printstat(s, mesq_send_put_nacked);
1d09d737 JS	107	printstat(s, mesq_qf_locked);
	108	printstat(s, mesq_qf_noop_not_full);
	109	printstat(s, mesq_qf_switch_head_failed);
	110	printstat(s, mesq_qf_unexpected_error);
	111	printstat(s, mesq_noop_unexpected_error);
	112	printstat(s, mesq_noop_lb_overflow);
	113	printstat(s, mesq_noop_qlimit_reached);
	114	printstat(s, mesq_noop_amo_nacked);
	115	printstat(s, mesq_noop_put_nacked);
563447d7	116	printstat(s, mesq_noop_page_overflow);
1d09d737 JS	117	return 0;
	118	}
	119
	120	static ssize_t statistics_write(struct file file, const char __user userbuf,
	121	size_t count, loff_t *data)
	122	{
	123	memset(&gru_stats, 0, sizeof(gru_stats));
	124	return count;
	125	}
	126
e56484da JS	127	static int mcs_statistics_show(struct seq_file s, void p)
	128	{
	129	int op;
	130	unsigned long total, count, max;
	131	static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
c550222f JS	132	"cch_interrupt_sync", "cch_deallocate", "tfh_write_only",
c550222f JS	133	"tfh_write_restart", "tgh_invalidate"};
e56484da	134
563447d7	135	seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks");
e56484da JS	136	for (op = 0; op < mcsop_last; op++) {
	137	count = atomic_long_read(&mcs_op_statistics[op].count);
	138	total = atomic_long_read(&mcs_op_statistics[op].total);
	139	max = mcs_op_statistics[op].max;
	140	seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
	141	count ? total / count : 0, max);
	142	}
	143	return 0;
	144	}
	145
	146	static ssize_t mcs_statistics_write(struct file *file,
	147	const char __user userbuf, size_t count, loff_t data)
	148	{
	149	memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
	150	return count;
	151	}
	152
1d09d737 JS	153	static int options_show(struct seq_file s, void p)
1d09d737 JS	154	{
563447d7	155	seq_printf(s, "#bitmask: 1=trace, 2=statistics\n");
9ca8e40c	156	seq_printf(s, "0x%lx\n", gru_options);
1d09d737 JS	157	return 0;
	158	}
	159
	160	static ssize_t options_write(struct file file, const char __user userbuf,
	161	size_t count, loff_t *data)
	162	{
d39b7dd1	163	char buf[20];
1d09d737	164
d39b7dd1 LT	165	if (count >= sizeof(buf))
	166	return -EINVAL;
	167	if (copy_from_user(buf, userbuf, count))
1d09d737	168	return -EFAULT;
d39b7dd1 LT	169	buf[count] = '\0';
	170	if (strict_strtoul(buf, 0, &gru_options))
	171	return -EINVAL;
1d09d737 JS	172
	173	return count;
	174	}
	175
	176	static int cch_seq_show(struct seq_file file, void data)
	177	{
	178	long gid = (long )data;
	179	int i;
	180	struct gru_state *gru = GID_TO_GRU(gid);
	181	struct gru_thread_state *ts;
	182	const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };
	183
	184	if (gid == 0)
563447d7 JS	185	seq_printf(file, "#%5s%5s%6s%7s%9s%6s%8s%8s\n", "gid", "bid",
563447d7 JS	186	"ctx#", "asid", "pid", "cbrs", "dsbytes", "mode");
1d09d737 JS	187	if (gru)
	188	for (i = 0; i < GRU_NUM_CCH; i++) {
	189	ts = gru->gs_gts[i];
	190	if (!ts)
	191	continue;
563447d7	192	seq_printf(file, " %5d%5d%6d%7d%9d%6d%8d%8s\n",
1d09d737	193	gru->gs_gid, gru->gs_blade_id, i,
563447d7 JS	194	is_kernel_context(ts) ? 0 : ts->ts_gms->ms_asids[gid].mt_asid,
563447d7 JS	195	is_kernel_context(ts) ? 0 : ts->ts_tgid_owner,
1d09d737 JS	196	ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
	197	ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
	198	mode[ts->ts_user_options &
	199	GRU_OPT_MISS_MASK]);
	200	}
	201
	202	return 0;
	203	}
	204
	205	static int gru_seq_show(struct seq_file file, void data)
	206	{
	207	long gid = (long )data, ctxfree, cbrfree, dsrfree;
	208	struct gru_state *gru = GID_TO_GRU(gid);
	209
	210	if (gid == 0) {
	211	seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid",
	212	"ctx", "cbr", "dsr", "ctx", "cbr", "dsr");
	213	seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy",
	214	"busy", "busy", "free", "free", "free");
	215	}
	216	if (gru) {
	217	ctxfree = GRU_NUM_CCH - gru->gs_active_contexts;
	218	cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE;
	219	dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES;
	220	seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n",
	221	gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree,
	222	GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree,
	223	ctxfree, cbrfree, dsrfree);
	224	}
	225
	226	return 0;
	227	}
	228
	229	static void seq_stop(struct seq_file file, void data)
	230	{
	231	}
	232
	233	static void seq_start(struct seq_file file, loff_t *gid)
	234	{
e1c3219d	235	if (*gid < gru_max_gids)
1d09d737 JS	236	return gid;
	237	return NULL;
	238	}
	239
	240	static void seq_next(struct seq_file file, void data, loff_t gid)
	241	{
	242	(*gid)++;
e1c3219d	243	if (*gid < gru_max_gids)
1d09d737 JS	244	return gid;
	245	return NULL;
	246	}
	247
	248	static const struct seq_operations cch_seq_ops = {
	249	.start = seq_start,
	250	.next = seq_next,
	251	.stop = seq_stop,
	252	.show = cch_seq_show
	253	};
	254
	255	static const struct seq_operations gru_seq_ops = {
	256	.start = seq_start,
	257	.next = seq_next,
	258	.stop = seq_stop,
	259	.show = gru_seq_show
	260	};
	261
	262	static int statistics_open(struct inode inode, struct file file)
	263	{
	264	return single_open(file, statistics_show, NULL);
	265	}
	266
e56484da JS	267	static int mcs_statistics_open(struct inode inode, struct file file)
	268	{
	269	return single_open(file, mcs_statistics_show, NULL);
	270	}
	271
1d09d737 JS	272	static int options_open(struct inode inode, struct file file)
	273	{
	274	return single_open(file, options_show, NULL);
	275	}
	276
	277	static int cch_open(struct inode inode, struct file file)
	278	{
	279	return seq_open(file, &cch_seq_ops);
	280	}
	281
	282	static int gru_open(struct inode inode, struct file file)
	283	{
	284	return seq_open(file, &gru_seq_ops);
	285	}
	286
	287	/* INDENT-OFF */
	288	static const struct file_operations statistics_fops = {
	289	.open = statistics_open,
	290	.read = seq_read,
	291	.write = statistics_write,
	292	.llseek = seq_lseek,
	293	.release = single_release,
	294	};
	295
e56484da JS	296	static const struct file_operations mcs_statistics_fops = {
	297	.open = mcs_statistics_open,
	298	.read = seq_read,
	299	.write = mcs_statistics_write,
	300	.llseek = seq_lseek,
	301	.release = single_release,
	302	};
	303
1d09d737 JS	304	static const struct file_operations options_fops = {
	305	.open = options_open,
	306	.read = seq_read,
	307	.write = options_write,
	308	.llseek = seq_lseek,
	309	.release = single_release,
	310	};
	311
	312	static const struct file_operations cch_fops = {
	313	.open = cch_open,
	314	.read = seq_read,
	315	.llseek = seq_lseek,
	316	.release = seq_release,
	317	};
	318	static const struct file_operations gru_fops = {
	319	.open = gru_open,
	320	.read = seq_read,
	321	.llseek = seq_lseek,
	322	.release = seq_release,
	323	};
	324
	325	static struct proc_entry {
	326	char *name;
d161a13f	327	umode_t mode;
1d09d737 JS	328	const struct file_operations *fops;
	329	struct proc_dir_entry *entry;
	330	} proc_files[] = {
	331	{"statistics", 0644, &statistics_fops},
e56484da	332	{"mcs_statistics", 0644, &mcs_statistics_fops},
1d09d737 JS	333	{"debug_options", 0644, &options_fops},
	334	{"cch_status", 0444, &cch_fops},
	335	{"gru_status", 0444, &gru_fops},
	336	{NULL}
	337	};
	338	/* INDENT-ON */
	339
	340	static struct proc_dir_entry *proc_gru __read_mostly;
	341
	342	static int create_proc_file(struct proc_entry *p)
	343	{
f8679af8	344	p->entry = proc_create(p->name, p->mode, proc_gru, p->fops);
1d09d737 JS	345	if (!p->entry)
1d09d737 JS	346	return -1;
1d09d737 JS	347	return 0;
	348	}
	349
	350	static void delete_proc_files(void)
	351	{
	352	struct proc_entry *p;
	353
	354	if (proc_gru) {
	355	for (p = proc_files; p->name; p++)
	356	if (p->entry)
	357	remove_proc_entry(p->name, proc_gru);
a8ca16ea	358	proc_remove(proc_gru);
1d09d737 JS	359	}
	360	}
	361
	362	int gru_proc_init(void)
	363	{
	364	struct proc_entry *p;
	365
1d09d737 JS	366	proc_gru = proc_mkdir("sgi_uv/gru", NULL);
	367
	368	for (p = proc_files; p->name; p++)
	369	if (create_proc_file(p))
	370	goto err;
	371	return 0;
	372
	373	err:
	374	delete_proc_files();
	375	return -1;
	376	}
	377
	378	void gru_proc_exit(void)
	379	{
	380	delete_proc_files();
	381	}