linux_dsm_epyc7002/drivers/misc/sgi-gru/gruprocfs.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

312 lines
8.3 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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.
*/
#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)
{
int ret;
ret = kstrtoul_from_user(userbuf, count, 0, &gru_options);
if (ret)
return ret;
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);
}
/* *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 struct proc_dir_entry *proc_gru __read_mostly;
int gru_proc_init(void)
{
proc_gru = proc_mkdir("sgi_uv/gru", NULL);
if (!proc_gru)
return -1;
if (!proc_create("statistics", 0644, proc_gru, &statistics_fops))
goto err;
if (!proc_create("mcs_statistics", 0644, proc_gru, &mcs_statistics_fops))
goto err;
if (!proc_create("debug_options", 0644, proc_gru, &options_fops))
goto err;
if (!proc_create_seq("cch_status", 0444, proc_gru, &cch_seq_ops))
goto err;
if (!proc_create_seq("gru_status", 0444, proc_gru, &gru_seq_ops))
goto err;
return 0;
err:
remove_proc_subtree("sgi_uv/gru", NULL);
return -1;
}
void gru_proc_exit(void)
{
remove_proc_subtree("sgi_uv/gru", NULL);
}