[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);

	if (val)
		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, vdata_double_alloc);
	printstat(s, gts_double_allocate);
	printstat(s, assign_context);
	printstat(s, assign_context_failed);
	printstat(s, free_context);
	printstat(s, load_context);
	printstat(s, unload_context);
	printstat(s, steal_context);
	printstat(s, steal_context_failed);
	printstat(s, nopfn);
	printstat(s, break_cow);
	printstat(s, asid_new);
	printstat(s, asid_next);
	printstat(s, asid_wrap);
	printstat(s, asid_reuse);
	printstat(s, intr);
	printstat(s, intr_mm_lock_failed);
	printstat(s, call_os);
	printstat(s, call_os_offnode_reference);
	printstat(s, call_os_check_for_bug);
	printstat(s, call_os_wait_queue);
	printstat(s, user_flush_tlb);
	printstat(s, user_unload_context);
	printstat(s, user_exception);
	printstat(s, set_task_slice);
	printstat(s, migrate_check);
	printstat(s, migrated_retarget);
	printstat(s, migrated_unload);
	printstat(s, migrated_unload_delay);
	printstat(s, migrated_nopfn_retarget);
	printstat(s, migrated_nopfn_unload);
	printstat(s, tlb_dropin);
	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, mmu_invalidate_range);
	printstat(s, mmu_invalidate_page);
	printstat(s, mmu_clear_flush_young);
	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, 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_not_full);
	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);
	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", "tgh_invalidate"};

	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, "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)
{
	unsigned long val;
	char buf[80];

	if (copy_from_user
	    (buf, userbuf, count < sizeof(buf) ? count : sizeof(buf)))
		return -EFAULT;
	buf[count - 1] = '\0';
	if (!strict_strtoul(buf, 10, &val))
		gru_options = val;

	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%9s%6s%8s%8s\n", "gid", "bid",
			   "ctx#", "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%9d%6d%8d%8s\n",
				   gru->gs_gid, gru->gs_blade_id, i,
				   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_GRUS)
		return gid;
	return NULL;
}

static void *seq_next(struct seq_file *file, void *data, loff_t *gid)
{
	(*gid)++;
	if (*gid < GRU_MAX_GRUS)
		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;
	int 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 = create_proc_entry(p->name, p->mode, proc_gru);
	if (!p->entry)
		return -1;
	p->entry->proc_fops = p->fops;
	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);
		remove_proc_entry("gru", NULL);
	}
}

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
	39	if (val)
	40	seq_printf(s, "%16lu %s\n", val, id);
	41	}
	42
	43	static int statistics_show(struct seq_file s, void p)
	44	{
	45	printstat(s, vdata_alloc);
	46	printstat(s, vdata_free);
	47	printstat(s, gts_alloc);
	48	printstat(s, gts_free);
	49	printstat(s, vdata_double_alloc);
	50	printstat(s, gts_double_allocate);
	51	printstat(s, assign_context);
	52	printstat(s, assign_context_failed);
	53	printstat(s, free_context);
	54	printstat(s, load_context);
	55	printstat(s, unload_context);
	56	printstat(s, steal_context);
	57	printstat(s, steal_context_failed);
	58	printstat(s, nopfn);
	59	printstat(s, break_cow);
	60	printstat(s, asid_new);
	61	printstat(s, asid_next);
	62	printstat(s, asid_wrap);
	63	printstat(s, asid_reuse);
	64	printstat(s, intr);
43884604	65	printstat(s, intr_mm_lock_failed);
1d09d737	66	printstat(s, call_os);
43884604	67	printstat(s, call_os_offnode_reference);
1d09d737 JS	68	printstat(s, call_os_check_for_bug);
	69	printstat(s, call_os_wait_queue);
	70	printstat(s, user_flush_tlb);
	71	printstat(s, user_unload_context);
	72	printstat(s, user_exception);
	73	printstat(s, set_task_slice);
	74	printstat(s, migrate_check);
	75	printstat(s, migrated_retarget);
	76	printstat(s, migrated_unload);
	77	printstat(s, migrated_unload_delay);
	78	printstat(s, migrated_nopfn_retarget);
	79	printstat(s, migrated_nopfn_unload);
	80	printstat(s, tlb_dropin);
	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);
	87	printstat(s, mmu_invalidate_range);
	88	printstat(s, mmu_invalidate_page);
	89	printstat(s, mmu_clear_flush_young);
	90	printstat(s, flush_tlb);
	91	printstat(s, flush_tlb_gru);
	92	printstat(s, flush_tlb_gru_tgh);
	93	printstat(s, flush_tlb_gru_zero_asid);
	94	printstat(s, copy_gpa);
	95	printstat(s, mesq_receive);
	96	printstat(s, mesq_receive_none);
	97	printstat(s, mesq_send);
	98	printstat(s, mesq_send_failed);
	99	printstat(s, mesq_noop);
	100	printstat(s, mesq_send_unexpected_error);
	101	printstat(s, mesq_send_lb_overflow);
	102	printstat(s, mesq_send_qlimit_reached);
	103	printstat(s, mesq_send_amo_nacked);
	104	printstat(s, mesq_send_put_nacked);
	105	printstat(s, mesq_qf_not_full);
	106	printstat(s, mesq_qf_locked);
	107	printstat(s, mesq_qf_noop_not_full);
	108	printstat(s, mesq_qf_switch_head_failed);
	109	printstat(s, mesq_qf_unexpected_error);
	110	printstat(s, mesq_noop_unexpected_error);
	111	printstat(s, mesq_noop_lb_overflow);
	112	printstat(s, mesq_noop_qlimit_reached);
	113	printstat(s, mesq_noop_amo_nacked);
	114	printstat(s, mesq_noop_put_nacked);
	115	return 0;
	116	}
	117
	118	static ssize_t statistics_write(struct file file, const char __user userbuf,
	119	size_t count, loff_t *data)
	120	{
	121	memset(&gru_stats, 0, sizeof(gru_stats));
	122	return count;
	123	}
	124
e56484da JS	125	static int mcs_statistics_show(struct seq_file s, void p)
	126	{
	127	int op;
	128	unsigned long total, count, max;
	129	static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt",
	130	"cch_interrupt_sync", "cch_deallocate", "tgh_invalidate"};
	131
	132	for (op = 0; op < mcsop_last; op++) {
	133	count = atomic_long_read(&mcs_op_statistics[op].count);
	134	total = atomic_long_read(&mcs_op_statistics[op].total);
	135	max = mcs_op_statistics[op].max;
	136	seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
	137	count ? total / count : 0, max);
	138	}
	139	return 0;
	140	}
	141
	142	static ssize_t mcs_statistics_write(struct file *file,
	143	const char __user userbuf, size_t count, loff_t data)
	144	{
	145	memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics));
	146	return count;
	147	}
	148
1d09d737 JS	149	static int options_show(struct seq_file s, void p)
1d09d737 JS	150	{
9ca8e40c	151	seq_printf(s, "0x%lx\n", gru_options);
1d09d737 JS	152	return 0;
	153	}
	154
	155	static ssize_t options_write(struct file file, const char __user userbuf,
	156	size_t count, loff_t *data)
	157	{
	158	unsigned long val;
	159	char buf[80];
	160
	161	if (copy_from_user
	162	(buf, userbuf, count < sizeof(buf) ? count : sizeof(buf)))
	163	return -EFAULT;
e56484da	164	buf[count - 1] = '\0';
1d09d737	165	if (!strict_strtoul(buf, 10, &val))
9ca8e40c	166	gru_options = val;
1d09d737 JS	167
	168	return count;
	169	}
	170
	171	static int cch_seq_show(struct seq_file file, void data)
	172	{
	173	long gid = (long )data;
	174	int i;
	175	struct gru_state *gru = GID_TO_GRU(gid);
	176	struct gru_thread_state *ts;
	177	const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" };
	178
	179	if (gid == 0)
	180	seq_printf(file, "#%5s%5s%6s%9s%6s%8s%8s\n", "gid", "bid",
	181	"ctx#", "pid", "cbrs", "dsbytes", "mode");
	182	if (gru)
	183	for (i = 0; i < GRU_NUM_CCH; i++) {
	184	ts = gru->gs_gts[i];
	185	if (!ts)
	186	continue;
	187	seq_printf(file, " %5d%5d%6d%9d%6d%8d%8s\n",
	188	gru->gs_gid, gru->gs_blade_id, i,
	189	ts->ts_tgid_owner,
	190	ts->ts_cbr_au_count * GRU_CBR_AU_SIZE,
	191	ts->ts_cbr_au_count * GRU_DSR_AU_BYTES,
	192	mode[ts->ts_user_options &
	193	GRU_OPT_MISS_MASK]);
	194	}
	195
	196	return 0;
	197	}
	198
	199	static int gru_seq_show(struct seq_file file, void data)
	200	{
	201	long gid = (long )data, ctxfree, cbrfree, dsrfree;
	202	struct gru_state *gru = GID_TO_GRU(gid);
	203
	204	if (gid == 0) {
	205	seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid",
	206	"ctx", "cbr", "dsr", "ctx", "cbr", "dsr");
	207	seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy",
	208	"busy", "busy", "free", "free", "free");
	209	}
	210	if (gru) {
	211	ctxfree = GRU_NUM_CCH - gru->gs_active_contexts;
	212	cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE;
	213	dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES;
	214	seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n",
	215	gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree,
	216	GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree,
	217	ctxfree, cbrfree, dsrfree);
	218	}
	219
	220	return 0;
	221	}
	222
	223	static void seq_stop(struct seq_file file, void data)
	224	{
	225	}
	226
	227	static void seq_start(struct seq_file file, loff_t *gid)
	228	{
	229	if (*gid < GRU_MAX_GRUS)
	230	return gid;
231	return NULL;
232	}
233
234	static void seq_next(struct seq_file file, void data, loff_t gid)
235	{
236	(*gid)++;
237	if (*gid < GRU_MAX_GRUS)
238	return gid;
239	return NULL;
240	}
241
242	static const struct seq_operations cch_seq_ops = {
243	.start = seq_start,
244	.next = seq_next,
245	.stop = seq_stop,
246	.show = cch_seq_show
247	};
248
249	static const struct seq_operations gru_seq_ops = {
250	.start = seq_start,
251	.next = seq_next,
252	.stop = seq_stop,
253	.show = gru_seq_show
254	};
255
256	static int statistics_open(struct inode inode, struct file file)
257	{
258	return single_open(file, statistics_show, NULL);
259	}
260
e56484da JS	261	static int mcs_statistics_open(struct inode inode, struct file file)
	262	{
	263	return single_open(file, mcs_statistics_show, NULL);
	264	}
	265
1d09d737 JS	266	static int options_open(struct inode inode, struct file file)
	267	{
	268	return single_open(file, options_show, NULL);
	269	}
	270
	271	static int cch_open(struct inode inode, struct file file)
	272	{
	273	return seq_open(file, &cch_seq_ops);
	274	}
	275
	276	static int gru_open(struct inode inode, struct file file)
	277	{
	278	return seq_open(file, &gru_seq_ops);
	279	}
	280
	281	/* INDENT-OFF */
	282	static const struct file_operations statistics_fops = {
	283	.open = statistics_open,
	284	.read = seq_read,
	285	.write = statistics_write,
	286	.llseek = seq_lseek,
	287	.release = single_release,
	288	};
	289
e56484da JS	290	static const struct file_operations mcs_statistics_fops = {
	291	.open = mcs_statistics_open,
	292	.read = seq_read,
	293	.write = mcs_statistics_write,
	294	.llseek = seq_lseek,
	295	.release = single_release,
	296	};
	297
1d09d737 JS	298	static const struct file_operations options_fops = {
	299	.open = options_open,
	300	.read = seq_read,
	301	.write = options_write,
	302	.llseek = seq_lseek,
	303	.release = single_release,
	304	};
	305
	306	static const struct file_operations cch_fops = {
	307	.open = cch_open,
	308	.read = seq_read,
	309	.llseek = seq_lseek,
	310	.release = seq_release,
	311	};
	312	static const struct file_operations gru_fops = {
	313	.open = gru_open,
	314	.read = seq_read,
	315	.llseek = seq_lseek,
	316	.release = seq_release,
	317	};
	318
	319	static struct proc_entry {
	320	char *name;
	321	int mode;
	322	const struct file_operations *fops;
	323	struct proc_dir_entry *entry;
	324	} proc_files[] = {
	325	{"statistics", 0644, &statistics_fops},
e56484da	326	{"mcs_statistics", 0644, &mcs_statistics_fops},
1d09d737 JS	327	{"debug_options", 0644, &options_fops},
	328	{"cch_status", 0444, &cch_fops},
	329	{"gru_status", 0444, &gru_fops},
	330	{NULL}
	331	};
	332	/* INDENT-ON */
	333
	334	static struct proc_dir_entry *proc_gru __read_mostly;
	335
	336	static int create_proc_file(struct proc_entry *p)
	337	{
	338	p->entry = create_proc_entry(p->name, p->mode, proc_gru);
	339	if (!p->entry)
	340	return -1;
	341	p->entry->proc_fops = p->fops;
	342	return 0;
	343	}
	344
	345	static void delete_proc_files(void)
	346	{
	347	struct proc_entry *p;
	348
	349	if (proc_gru) {
	350	for (p = proc_files; p->name; p++)
	351	if (p->entry)
	352	remove_proc_entry(p->name, proc_gru);
	353	remove_proc_entry("gru", NULL);
	354	}
	355	}
	356
	357	int gru_proc_init(void)
	358	{
	359	struct proc_entry *p;
	360
1d09d737 JS	361	proc_gru = proc_mkdir("sgi_uv/gru", NULL);
	362
	363	for (p = proc_files; p->name; p++)
	364	if (create_proc_file(p))
	365	goto err;
	366	return 0;
	367
	368	err:
	369	delete_proc_files();
	370	return -1;
	371	}
	372
	373	void gru_proc_exit(void)
	374	{
	375	delete_proc_files();
	376	}