Viewing: lproc_osc.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*/
#define DEBUG_SUBSYSTEM S_CLASS
#include <linux/version.h>
#include <asm/statfs.h>
#include <obd_cksum.h>
#include <obd_class.h>
#include <lprocfs_status.h>
#include <linux/seq_file.h>
#include <lustre_osc.h>
#include "osc_internal.h"
static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct obd_import *imp;
int rc;
with_imp_locked(obd, imp, rc)
rc = scnprintf(buf, PAGE_SIZE, "%d\n",
!test_bit(IMPF_DEACTIVE, imp->imp_flags));
return rc;
}
static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct obd_import *imp, *imp0;
bool val;
int rc;
rc = kstrtobool(buffer, &val);
if (rc)
return rc;
with_imp_locked(obd, imp0, rc)
imp = class_import_get(imp0);
if (rc)
return rc;
/* opposite senses */
if (test_bit(IMPF_DEACTIVE, imp->imp_flags) == val)
rc = ptlrpc_set_import_active(imp, val);
else
CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
(unsigned int)val);
class_import_put(imp);
return rc ?: count;
}
LUSTRE_RW_ATTR(active);
static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
return scnprintf(buf, PAGE_SIZE, "%u\n", cli->cl_max_rpcs_in_flight);
}
static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
int adding, added, req_count;
unsigned int val;
int rc;
rc = kstrtouint(buffer, 0, &val);
if (rc)
return rc;
if (val == 0 || val > OSC_MAX_RIF_MAX)
return -ERANGE;
adding = (int)val - cli->cl_max_rpcs_in_flight;
req_count = atomic_read(&osc_pool_req_count);
if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
/*
* There might be some race which will cause over-limit
* allocation, but it is fine.
*/
if (req_count + adding > osc_reqpool_maxreqcount)
adding = osc_reqpool_maxreqcount - req_count;
added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
atomic_add(added, &osc_pool_req_count);
}
spin_lock(&cli->cl_loi_list_lock);
cli->cl_max_rpcs_in_flight = val;
client_adjust_max_dirty(cli);
spin_unlock(&cli->cl_loi_list_lock);
return count;
}
LUSTRE_RW_ATTR(max_rpcs_in_flight);
static ssize_t max_dirty_mb_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
return scnprintf(buf, PAGE_SIZE, "%lu\n",
PAGES_TO_MiB(cli->cl_dirty_max_pages));
}
static ssize_t max_dirty_mb_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
u64 pages_number;
int rc;
rc = sysfs_memparse(buffer, count, &pages_number, "MiB");
if (rc < 0)
return rc;
pages_number = round_up(pages_number, 1024 * 1024) >> PAGE_SHIFT;
if (pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
pages_number > compat_totalram_pages() / 4) /* 1/4 of RAM */
return -ERANGE;
spin_lock(&cli->cl_loi_list_lock);
cli->cl_dirty_max_pages = pages_number;
osc_wake_cache_waiters(cli);
spin_unlock(&cli->cl_loi_list_lock);
return count;
}
LUSTRE_RW_ATTR(max_dirty_mb);
LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
LUSTRE_RO_ATTR(conn_uuid);
LUSTRE_RW_ATTR(pinger_recov);
LUSTRE_RW_ATTR(ping);
static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
{
struct obd_device *obd = m->private;
struct client_obd *cli = &obd->u.cli;
int shift = 20 - PAGE_SHIFT;
seq_printf(m, "used_mb: %ld\n"
"busy_cnt: %ld\n"
"unevict_cnt: %ld\n"
"reclaim: %llu\n",
(atomic_long_read(&cli->cl_lru_in_list) +
atomic_long_read(&cli->cl_lru_busy)) >> shift,
atomic_long_read(&cli->cl_lru_busy),
atomic_long_read(&cli->cl_unevict_lru_in_list),
cli->cl_lru_reclaim);
return 0;
}
/* shrink the number of caching pages to a specific number */
static ssize_t osc_cached_mb_seq_write(struct file *file,
const char __user *buffer,
size_t count, loff_t *off)
{
struct seq_file *m = file->private_data;
struct obd_device *obd = m->private;
struct client_obd *cli = &obd->u.cli;
u64 pages_number;
const char *tmp;
long rc;
char kernbuf[128];
if (count >= sizeof(kernbuf))
return -EINVAL;
if (copy_from_user(kernbuf, buffer, count))
return -EFAULT;
kernbuf[count] = 0;
tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
if (rc < 0)
return rc;
pages_number >>= PAGE_SHIFT;
rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
if (rc > 0) {
struct lu_env *env;
__u16 refcheck;
env = cl_env_get(&refcheck);
if (!IS_ERR(env)) {
(void)osc_lru_shrink(env, cli, rc, true, NULL);
cl_env_put(env, &refcheck);
}
}
return count;
}
LDEBUGFS_SEQ_FOPS(osc_cached_mb);
static ssize_t osc_unevict_cached_mb_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
int shift = 20 - PAGE_SHIFT;
return scnprintf(buf, PAGE_SIZE, "%ld\n",
atomic_long_read(&cli->cl_unevict_lru_in_list) >> shift);
}
static ssize_t osc_unevict_cached_mb_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
if (count == 5 && strncmp(buffer, "clear", 5) == 0) {
struct lu_env *env;
u16 refcheck;
env = cl_env_get(&refcheck);
if (!IS_ERR(env)) {
(void)osc_unevict_cache_shrink(env, cli);
/*
* Scan the LRU list, discard the LRU pages or move
* the unevictable/mlock()ed pages into the unevictable
* list.
*/
(void)osc_lru_shrink(env, cli,
atomic_long_read(&cli->cl_lru_in_list),
true, NULL);
cl_env_put(env, &refcheck);
}
return count;
}
return -EINVAL;
}
LUSTRE_RW_ATTR(osc_unevict_cached_mb);
static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
return scnprintf(buf, PAGE_SIZE, "%lu\n",
cli->cl_dirty_pages << PAGE_SHIFT);
}
LUSTRE_RO_ATTR(cur_dirty_bytes);
static ssize_t cur_grant_bytes_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_avail_grant);
}
static ssize_t cur_grant_bytes_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
struct obd_import *imp;
u64 val;
int rc;
rc = sysfs_memparse(buffer, count, &val, "MiB");
if (rc < 0)
return rc;
/* this is only for shrinking grant */
if (val >= cli->cl_avail_grant)
return 0;
with_imp_locked(obd, imp, rc)
if (imp->imp_state == LUSTRE_IMP_FULL)
rc = osc_shrink_grant_to_target(cli, val);
return rc ? rc : count;
}
LUSTRE_RW_ATTR(cur_grant_bytes);
static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_lost_grant);
}
LUSTRE_RO_ATTR(cur_lost_grant_bytes);
static ssize_t cur_dirty_grant_bytes_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct client_obd *cli = &obd->u.cli;
return scnprintf(buf, PAGE_SIZE, "%lu\n", cli->cl_dirty_grant);
}
LUSTRE_RO_ATTR(cur_dirty_grant_bytes);
static ssize_t grant_shrink_interval_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
}
static ssize_t grant_shrink_interval_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
unsigned int val;
int rc;
rc = kstrtouint(buffer, 0, &val);
if (rc)
return rc;
if (val == 0)
return -ERANGE;
obd->u.cli.cl_grant_shrink_interval = val;
osc_update_next_shrink(&obd->u.cli);
osc_schedule_grant_work();
return count;
}
LUSTRE_RW_ATTR(grant_shrink_interval);
static ssize_t enable_page_cache_shrink_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
return scnprintf(buf, PAGE_SIZE, "%d\n", osc_page_cache_shrink_enabled);
}
static ssize_t enable_page_cache_shrink_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
bool val;
int rc;
rc = kstrtobool(buffer, &val);
if (rc)
return rc;
osc_page_cache_shrink_enabled = val;
return count;
}
LUSTRE_RW_ATTR(enable_page_cache_shrink);
static ssize_t checksums_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum);
}
static ssize_t checksums_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
bool val;
int rc;
rc = kstrtobool(buffer, &val);
if (rc)
return rc;
obd->u.cli.cl_checksum = val;
return count;
}
LUSTRE_RW_ATTR(checksums);
LUSTRE_RW_ATTR(checksum_type);
static ssize_t resend_count_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
}
static ssize_t resend_count_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
unsigned int val;
int rc;
rc = kstrtouint(buffer, 10, &val);
if (rc)
return rc;
atomic_set(&obd->u.cli.cl_resends, val);
return count;
}
LUSTRE_RW_ATTR(resend_count);
static ssize_t checksum_dump_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
return scnprintf(buf, PAGE_SIZE, "%d\n", !!obd->u.cli.cl_checksum_dump);
}
static ssize_t checksum_dump_store(struct kobject *kobj,
struct attribute *attr,
const char *buffer,
size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
bool val;
int rc;
rc = kstrtobool(buffer, &val);
if (rc)
return rc;
obd->u.cli.cl_checksum_dump = val;
return count;
}
LUSTRE_RW_ATTR(checksum_dump);
static ssize_t destroys_in_flight_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
return sprintf(buf, "%u\n",
atomic_read(&obd->u.cli.cl_destroy_in_flight));
}
LUSTRE_RO_ATTR(destroys_in_flight);
LUSTRE_RW_ATTR(max_pages_per_rpc);
LUSTRE_RW_ATTR(max_mb_per_rpc_read);
LUSTRE_RW_ATTR(max_mb_per_rpc_write);
LUSTRE_RW_ATTR(short_io_bytes);
static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
{
struct obd_device *obd = m->private;
struct client_obd *cli = &obd->u.cli;
long pages;
int mb;
pages = atomic_long_read(&cli->cl_unstable_count);
mb = (pages * PAGE_SIZE) >> 20;
seq_printf(m, "unstable_pages: %20ld\n"
"unstable_mb: %10d\n",
pages, mb);
return 0;
}
LDEBUGFS_SEQ_FOPS_RO(osc_unstable_stats);
static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct obd_import *imp;
int ret;
with_imp_locked(obd, imp, ret)
ret = sprintf(buf, "%u\n", imp->imp_idle_timeout);
return ret;
}
static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct obd_import *imp;
struct ptlrpc_request *req;
unsigned int idle_debug = 0;
unsigned int val;
int rc;
if (strncmp(buffer, "debug", 5) == 0) {
idle_debug = D_CONSOLE;
} else if (strncmp(buffer, "nodebug", 6) == 0) {
idle_debug = D_HA;
} else {
rc = kstrtouint(buffer, 10, &val);
if (rc)
return rc;
if (val > CONNECTION_SWITCH_MAX)
return -ERANGE;
}
with_imp_locked(obd, imp, rc) {
if (idle_debug) {
imp->imp_idle_debug = idle_debug;
} else {
if (!val) {
/* initiate the connection if it's in IDLE state */
req = ptlrpc_request_alloc(imp,
&RQF_OST_STATFS);
if (req != NULL)
ptlrpc_req_put(req);
}
imp->imp_idle_timeout = val;
}
}
return count;
}
LUSTRE_RW_ATTR(idle_timeout);
static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct obd_import *imp;
struct ptlrpc_request *req;
int rc;
with_imp_locked(obd, imp, rc) {
/* to initiate the connection if it's in IDLE state */
req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
if (req)
ptlrpc_req_put(req);
ptlrpc_pinger_force(imp);
}
return rc ?: count;
}
LUSTRE_WO_ATTR(idle_connect);
static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct obd_import *imp;
ssize_t len;
with_imp_locked(obd, imp, len)
len = scnprintf(buf, PAGE_SIZE, "%d\n",
!test_bit(IMPF_GRANT_SHRINK_DISABLED, imp->imp_flags) &&
OCD_HAS_FLAG(&imp->imp_connect_data,
GRANT_SHRINK));
return len;
}
static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count)
{
struct obd_device *obd = container_of(kobj, struct obd_device,
obd_kset.kobj);
struct obd_import *imp;
bool val;
int rc;
if (obd == NULL)
return 0;
rc = kstrtobool(buffer, &val);
if (rc)
return rc;
with_imp_locked(obd, imp, rc) {
if (val)
clear_bit(IMPF_GRANT_SHRINK_DISABLED, imp->imp_flags);
else
set_bit(IMPF_GRANT_SHRINK_DISABLED, imp->imp_flags);
smp_mb__after_atomic();
}
return rc ?: count;
}
LUSTRE_RW_ATTR(grant_shrink);
LDEBUGFS_SEQ_FOPS_RO_TYPE(osc, connect_flags);
LDEBUGFS_SEQ_FOPS_RO_TYPE(osc, server_uuid);
LDEBUGFS_SEQ_FOPS_RO_TYPE(osc, timeouts);
LDEBUGFS_SEQ_FOPS_RO_TYPE(osc, state);
LDEBUGFS_SEQ_FOPS_RW_TYPE(osc, import);
static int osc_io_latency_stats_seq_show(struct seq_file *seq, void *v)
{
struct obd_device *obd = seq->private;
struct client_obd *cli = &obd->u.cli;
int num_buckets = PTLRPC_MAX_BRW_BITS - PAGE_SHIFT;
return obd_io_latency_stats_seq_show(seq,
cli->cl_read_io_latency_by_size,
cli->cl_write_io_latency_by_size,
num_buckets,
cli->cl_io_latency_stats_init,
&cli->cl_loi_list_lock);
}
static ssize_t osc_io_latency_stats_seq_write(struct file *file,
const char __user *buf,
size_t len, loff_t *off)
{
struct seq_file *seq = file->private_data;
struct obd_device *obd = seq->private;
struct client_obd *cli = &obd->u.cli;
int num_buckets = PTLRPC_MAX_BRW_BITS - PAGE_SHIFT;
obd_io_latency_stats_clear(cli->cl_read_io_latency_by_size,
cli->cl_write_io_latency_by_size,
num_buckets, &cli->cl_io_latency_stats_init);
return len;
}
LDEBUGFS_SEQ_FOPS(osc_io_latency_stats);
static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
{
struct obd_device *obd = seq->private;
struct client_obd *cli = &obd->u.cli;
unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
unsigned long read_lat_tot, read_lat_cum;
unsigned long write_lat_tot, write_lat_cum;
int i;
spin_lock(&cli->cl_loi_list_lock);
lprocfs_stats_header(seq, ktime_get_real(), cli->cl_stats_init, 25,
":", true, "");
seq_printf(seq, "read RPCs in flight: %d\n",
cli->cl_r_in_flight);
seq_printf(seq, "write RPCs in flight: %d\n",
cli->cl_w_in_flight);
seq_printf(seq, "DIO RPCs in flight: %d\n",
cli->cl_d_in_flight);
seq_printf(seq, "pending write pages: %d\n",
atomic_read(&cli->cl_pending_w_pages));
seq_printf(seq, "pending read pages: %d\n",
atomic_read(&cli->cl_pending_r_pages));
seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
seq_printf(seq, "pages per rpc rpcs %% cum %% |");
seq_printf(seq, " rpcs %% cum %%\n");
read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
read_cum = 0;
write_cum = 0;
for (i = 0; i < OBD_HIST_MAX; i++) {
unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
read_cum += r;
write_cum += w;
seq_printf(seq, "%d:\t\t%10lu %3u %3u | %10lu %3u %3u\n",
1 << i, r, pct(r, read_tot),
pct(read_cum, read_tot), w,
pct(w, write_tot),
pct(write_cum, write_tot));
if (read_cum == read_tot && write_cum == write_tot)
break;
}
seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
seq_printf(seq, "rpcs in flight rpcs %% cum %% |");
seq_printf(seq, " rpcs %% cum %%\n");
read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
read_cum = 0;
write_cum = 0;
for (i = 1; i < OBD_HIST_MAX; i++) {
unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
read_cum += r;
write_cum += w;
seq_printf(seq, "%d:\t\t%10lu %3u %3u | %10lu %3u %3u\n",
i, r, pct(r, read_tot),
pct(read_cum, read_tot), w,
pct(w, write_tot),
pct(write_cum, write_tot));
if (read_cum == read_tot && write_cum == write_tot)
break;
}
seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
seq_printf(seq, "offset rpcs %% cum %% |");
seq_printf(seq, " rpcs %% cum %%\n");
read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
read_cum = 0;
write_cum = 0;
for (i = 0; i < OBD_HIST_MAX; i++) {
unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
read_cum += r;
write_cum += w;
seq_printf(seq, "%d:\t\t%10lu %3u %3u | %10lu %3u %3u\n",
(i == 0) ? 0 : 1 << (i - 1),
r, pct(r, read_tot), pct(read_cum, read_tot),
w, pct(w, write_tot), pct(write_cum, write_tot));
if (read_cum == read_tot && write_cum == write_tot)
break;
}
seq_puts(seq, "\n");
seq_puts(seq, "\t\t\tread\t\t\twrite\n");
seq_puts(seq, "RPC latency (us) count % cum % |");
seq_puts(seq, " count % cum %\n");
read_lat_tot = lprocfs_oh_sum(&cli->cl_read_io_latency_hist);
write_lat_tot = lprocfs_oh_sum(&cli->cl_write_io_latency_hist);
read_lat_cum = 0;
write_lat_cum = 0;
for (i = 0; i < OBD_HIST_MAX; i++) {
unsigned long read_lat =
cli->cl_read_io_latency_hist.oh_buckets[i];
unsigned long write_lat =
cli->cl_write_io_latency_hist.oh_buckets[i];
read_lat = binary_usec_to_dec(read_lat);
write_lat = binary_usec_to_dec(write_lat);
read_lat_cum += read_lat;
write_lat_cum += write_lat;
seq_printf(seq, "%d:\t\t%10lu %3u %3u | %10lu %3u %3u\n",
(i == 0) ? 0 : 1 << (i - 1),
read_lat, pct(read_lat, read_lat_tot),
pct(read_lat_cum, read_lat_tot),
write_lat, pct(write_lat, write_lat_tot),
pct(write_lat_cum, write_lat_tot));
if (read_lat_cum == read_lat_tot &&
write_lat_cum == write_lat_tot)
break;
}
spin_unlock(&cli->cl_loi_list_lock);
return 0;
}
static ssize_t osc_rpc_stats_seq_write(struct file *file,
const char __user *buf,
size_t len, loff_t *off)
{
struct seq_file *seq = file->private_data;
struct obd_device *obd = seq->private;
struct client_obd *cli = &obd->u.cli;
lprocfs_oh_clear(&cli->cl_read_rpc_hist);
lprocfs_oh_clear(&cli->cl_write_rpc_hist);
lprocfs_oh_clear(&cli->cl_read_page_hist);
lprocfs_oh_clear(&cli->cl_write_page_hist);
lprocfs_oh_clear(&cli->cl_read_offset_hist);
lprocfs_oh_clear(&cli->cl_write_offset_hist);
lprocfs_oh_clear(&cli->cl_read_io_latency_hist);
lprocfs_oh_clear(&cli->cl_write_io_latency_hist);
cli->cl_stats_init = ktime_get_real();
return len;
}
LDEBUGFS_SEQ_FOPS(osc_rpc_stats);
static int osc_stats_seq_show(struct seq_file *seq, void *v)
{
struct obd_device *obd = seq->private;
struct osc_stats *stats = &obd2osc_dev(obd)->osc_stats;
lprocfs_stats_header(seq, ktime_get_real(), stats->os_init, 25, ":",
true, "");
seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
stats->os_lockless_writes);
seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
stats->os_lockless_reads);
return 0;
}
static ssize_t osc_stats_seq_write(struct file *file,
const char __user *buf,
size_t len, loff_t *off)
{
struct seq_file *seq = file->private_data;
struct obd_device *obd = seq->private;
struct osc_stats *stats = &obd2osc_dev(obd)->osc_stats;
memset(stats, 0, sizeof(*stats));
stats->os_init = ktime_get_real();
return len;
}
LDEBUGFS_SEQ_FOPS(osc_stats);
static struct ldebugfs_vars ldebugfs_osc_obd_vars[] = {
{ .name = "connect_flags",
.fops = &osc_connect_flags_fops },
{ .name = "import",
.fops = &osc_import_fops },
{ .name = "io_latency_stats",
.fops = &osc_io_latency_stats_fops },
{ .name = "osc_cached_mb",
.fops = &osc_cached_mb_fops },
{ .name = "osc_stats",
.fops = &osc_stats_fops },
{ .name = "ost_server_uuid",
.fops = &osc_server_uuid_fops },
{ .name = "rpc_stats",
.fops = &osc_rpc_stats_fops },
{ .name = "state",
.fops = &osc_state_fops },
{ .name = "timeouts",
.fops = &osc_timeouts_fops },
{ .name = "unstable_stats",
.fops = &osc_unstable_stats_fops },
{ NULL }
};
LUSTRE_OBD_UINT_PARAM_ATTR(at_min);
LUSTRE_OBD_UINT_PARAM_ATTR(at_max);
LUSTRE_OBD_UINT_PARAM_ATTR(at_history);
LUSTRE_OBD_UINT_PARAM_ATTR(ldlm_enqueue_min);
static struct attribute *osc_attrs[] = {
&lustre_attr_active.attr,
&lustre_attr_enable_page_cache_shrink.attr,
&lustre_attr_checksums.attr,
&lustre_attr_checksum_type.attr,
&lustre_attr_checksum_dump.attr,
&lustre_attr_cur_dirty_bytes.attr,
&lustre_attr_cur_grant_bytes.attr,
&lustre_attr_cur_lost_grant_bytes.attr,
&lustre_attr_cur_dirty_grant_bytes.attr,
&lustre_attr_destroys_in_flight.attr,
&lustre_attr_grant_shrink_interval.attr,
&lustre_attr_max_dirty_mb.attr,
&lustre_attr_max_mb_per_rpc_read.attr,
&lustre_attr_max_mb_per_rpc_write.attr,
&lustre_attr_max_pages_per_rpc.attr,
&lustre_attr_max_rpcs_in_flight.attr,
&lustre_attr_osc_unevict_cached_mb.attr,
&lustre_attr_short_io_bytes.attr,
&lustre_attr_resend_count.attr,
&lustre_attr_ost_conn_uuid.attr,
&lustre_attr_conn_uuid.attr,
&lustre_attr_pinger_recov.attr,
&lustre_attr_ping.attr,
&lustre_attr_idle_timeout.attr,
&lustre_attr_idle_connect.attr,
&lustre_attr_grant_shrink.attr,
&lustre_attr_at_max.attr,
&lustre_attr_at_min.attr,
&lustre_attr_at_history.attr,
&lustre_attr_ldlm_enqueue_min.attr,
NULL,
};
ATTRIBUTE_GROUPS(osc); /* creates osc_groups */
int osc_tunables_init(struct obd_device *obd)
{
int rc;
obd->obd_debugfs_vars = ldebugfs_osc_obd_vars;
obd->obd_ktype.default_groups = osc_groups;
rc = lprocfs_obd_setup(obd, false);
if (rc)
return rc;
rc = sptlrpc_lprocfs_cliobd_attach(obd);
if (rc) {
lprocfs_obd_cleanup(obd);
return rc;
}
ptlrpc_lprocfs_register_obd(obd);
return 0;
}
