*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
#ifdef CONFIG_PROC_FS
static int lprocfs_no_percpu_stats = 0;
-CFS_MODULE_PARM(lprocfs_no_percpu_stats, "i", int, 0644,
- "Do not alloc percpu data for lprocfs stats");
+module_param(lprocfs_no_percpu_stats, int, 0644);
+MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
#define MAX_STRING_SIZE 128
/* Generic callbacks */
int lprocfs_uint_seq_show(struct seq_file *m, void *data)
{
- return seq_printf(m, "%u\n", *(unsigned int *)data);
+ seq_printf(m, "%u\n", *(unsigned int *)data);
+ return 0;
}
EXPORT_SYMBOL(lprocfs_uint_seq_show);
int lprocfs_wr_uint(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
- unsigned *p = data;
- char dummy[MAX_STRING_SIZE + 1], *end;
- unsigned long tmp;
+ unsigned *p = data;
+ char dummy[MAX_STRING_SIZE + 1];
+ char *end;
+ unsigned long tmp;
- dummy[MAX_STRING_SIZE] = '\0';
- if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
- return -EFAULT;
+ if (count >= sizeof(dummy))
+ return -EINVAL;
- tmp = simple_strtoul(dummy, &end, 0);
- if (dummy == end)
- return -EINVAL;
+ if (count == 0)
+ return 0;
- *p = (unsigned int)tmp;
- return count;
+ if (copy_from_user(dummy, buffer, count))
+ return -EFAULT;
+
+ dummy[count] = 0;
+
+ tmp = simple_strtoul(dummy, &end, 0);
+ if (dummy == end)
+ return -EINVAL;
+
+ *p = (unsigned int)tmp;
+ return count;
}
EXPORT_SYMBOL(lprocfs_wr_uint);
size_t count, loff_t *off)
{
int *data = ((struct seq_file *)file->private_data)->private;
- int val = 0, rc;
+ int rc;
+ __s64 val = 0;
- rc = lprocfs_write_helper(buffer, count, &val);
+ rc = lprocfs_str_to_s64(buffer, count, &val);
if (rc < 0)
return rc;
int lprocfs_u64_seq_show(struct seq_file *m, void *data)
{
LASSERT(data != NULL);
- return seq_printf(m, LPU64"\n", *(__u64 *)data);
+ seq_printf(m, "%llu\n", *(__u64 *)data);
+ return 0;
}
EXPORT_SYMBOL(lprocfs_u64_seq_show);
{
atomic_t *atom = data;
LASSERT(atom != NULL);
- return seq_printf(m, "%d\n", atomic_read(atom));
+ seq_printf(m, "%d\n", atomic_read(atom));
+ return 0;
}
EXPORT_SYMBOL(lprocfs_atomic_seq_show);
size_t count, loff_t *off)
{
atomic_t *atm = ((struct seq_file *)file->private_data)->private;
- int val = 0;
+ __s64 val = 0;
int rc;
- rc = lprocfs_write_helper(buffer, count, &val);
+ rc = lprocfs_str_to_s64(buffer, count, &val);
if (rc < 0)
return rc;
- if (val <= 0)
+ if (val <= 0 || val > INT_MAX)
return -ERANGE;
atomic_set(atm, val);
struct obd_device *obd = data;
LASSERT(obd != NULL);
- return seq_printf(m, "%s\n", obd->obd_uuid.uuid);
+ seq_printf(m, "%s\n", obd->obd_uuid.uuid);
+ return 0;
}
EXPORT_SYMBOL(lprocfs_uuid_seq_show);
struct obd_device *dev = data;
LASSERT(dev != NULL);
- return seq_printf(m, "%s\n", dev->obd_name);
+ seq_printf(m, "%s\n", dev->obd_name);
+ return 0;
}
EXPORT_SYMBOL(lprocfs_name_seq_show);
cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
OBD_STATFS_NODELAY);
if (!rc)
- rc = seq_printf(m, "%u\n", osfs.os_bsize);
+ seq_printf(m, "%u\n", osfs.os_bsize);
return rc;
}
EXPORT_SYMBOL(lprocfs_blksize_seq_show);
while (blk_size >>= 1)
result <<= 1;
- rc = seq_printf(m, LPU64"\n", result);
+ seq_printf(m, "%llu\n", result);
}
return rc;
}
while (blk_size >>= 1)
result <<= 1;
- rc = seq_printf(m, LPU64"\n", result);
+ seq_printf(m, "%llu\n", result);
}
return rc;
}
while (blk_size >>= 1)
result <<= 1;
- rc = seq_printf(m, LPU64"\n", result);
+ seq_printf(m, "%llu\n", result);
}
return rc;
}
cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
OBD_STATFS_NODELAY);
if (!rc)
- rc = seq_printf(m, LPU64"\n", osfs.os_files);
+ seq_printf(m, "%llu\n", osfs.os_files);
return rc;
}
EXPORT_SYMBOL(lprocfs_filestotal_seq_show);
cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
OBD_STATFS_NODELAY);
if (!rc)
- rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
+ seq_printf(m, "%llu\n", osfs.os_ffree);
return rc;
}
EXPORT_SYMBOL(lprocfs_filesfree_seq_show);
LPROCFS_CLIMP_CHECK(obd);
imp = obd->u.cli.cl_import;
imp_state_name = ptlrpc_import_state_name(imp->imp_state);
- rc = seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
- imp->imp_deactive ? "\tDEACTIVATED" : "");
+ seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
+ imp->imp_deactive ? "\tDEACTIVATED" : "");
LPROCFS_CLIMP_EXIT(obd);
return rc;
LPROCFS_CLIMP_CHECK(obd);
conn = obd->u.cli.cl_import->imp_connection;
if (conn && obd->u.cli.cl_import)
- rc = seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
+ seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
else
- rc = seq_printf(m, "%s\n", "<none>");
+ seq_printf(m, "%s\n", "<none>");
LPROCFS_CLIMP_EXIT(obd);
return rc;
EXPORT_SYMBOL(lprocfs_conn_uuid_seq_show);
/** add up per-cpu counters */
+
+/**
+ * Lock statistics structure for access, possibly only on this CPU.
+ *
+ * The statistics struct may be allocated with per-CPU structures for
+ * efficient concurrent update (usually only on server-wide stats), or
+ * as a single global struct (e.g. for per-client or per-job statistics),
+ * so the required locking depends on the type of structure allocated.
+ *
+ * For per-CPU statistics, pin the thread to the current cpuid so that
+ * will only access the statistics for that CPU. If the stats structure
+ * for the current CPU has not been allocated (or previously freed),
+ * allocate it now. The per-CPU statistics do not need locking since
+ * the thread is pinned to the CPU during update.
+ *
+ * For global statistics, lock the stats structure to prevent concurrent update.
+ *
+ * \param[in] stats statistics structure to lock
+ * \param[in] opc type of operation:
+ * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
+ * for incrementing statistics for that CPU
+ * LPROCFS_GET_NUM_CPU: "lock" and return number of used
+ * CPU indices to iterate over all indices
+ * \param[out] flags CPU interrupt saved state for IRQ-safe locking
+ *
+ * \retval cpuid of current thread or number of allocated structs
+ * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
+ */
+int lprocfs_stats_lock(struct lprocfs_stats *stats,
+ enum lprocfs_stats_lock_ops opc,
+ unsigned long *flags)
+{
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
+ spin_lock_irqsave(&stats->ls_lock, *flags);
+ else
+ spin_lock(&stats->ls_lock);
+ return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
+ }
+
+ switch (opc) {
+ case LPROCFS_GET_SMP_ID: {
+ unsigned int cpuid = get_cpu();
+
+ if (unlikely(!stats->ls_percpu[cpuid])) {
+ int rc = lprocfs_stats_alloc_one(stats, cpuid);
+
+ if (rc < 0) {
+ put_cpu();
+ return rc;
+ }
+ }
+ return cpuid;
+ }
+ case LPROCFS_GET_NUM_CPU:
+ return stats->ls_biggest_alloc_num;
+ default:
+ LBUG();
+ }
+}
+
+/**
+ * Unlock statistics structure after access.
+ *
+ * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
+ * or unpin this thread from the current cpuid for per-CPU statistics.
+ *
+ * This function must be called using the same arguments as used when calling
+ * lprocfs_stats_lock() so that the correct operation can be performed.
+ *
+ * \param[in] stats statistics structure to unlock
+ * \param[in] opc type of operation (current cpuid or number of structs)
+ * \param[in] flags CPU interrupt saved state for IRQ-safe locking
+ */
+void lprocfs_stats_unlock(struct lprocfs_stats *stats,
+ enum lprocfs_stats_lock_ops opc,
+ unsigned long *flags)
+{
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
+ spin_unlock_irqrestore(&stats->ls_lock, *flags);
+ else
+ spin_unlock(&stats->ls_lock);
+ } else if (opc == LPROCFS_GET_SMP_ID) {
+ put_cpu();
+ }
+}
+
+/** add up per-cpu counters */
void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
struct lprocfs_counter *cnt)
{
#undef flag2str
static const char *obd_connect_names[] = {
+ /* flags names */
"read_only",
"lov_index",
"connect_from_mds",
"unlink_close",
"multi_mod_rpcs",
"dir_stripe",
- "fileset_mount",
+ "subtree",
"lock_ahead",
"bulk_mbits",
"compact_obdo",
+ "second_flags",
+ /* flags2 names */
+ "file_secctx",
NULL
};
-static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, char *sep)
+static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags,
+ __u64 flags2, const char *sep)
{
bool first = true;
- __u64 mask = 1;
+ __u64 mask;
int i;
- for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
+ for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
if (flags & mask) {
seq_printf(m, "%s%s",
first ? "" : sep, obd_connect_names[i]);
first = false;
}
}
- if (flags & ~(mask - 1))
- seq_printf(m, "%sunknown_"LPX64,
+
+ if (flags & ~(mask - 1)) {
+ seq_printf(m, "%sunknown_%#llx",
first ? "" : sep, flags & ~(mask - 1));
+ first = false;
+ }
+
+ if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
+ return;
+
+ for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
+ if (flags2 & mask) {
+ seq_printf(m, "%s%s",
+ first ? "" : sep, obd_connect_names[i]);
+ first = false;
+ }
+ }
+
+ if (flags2 & ~(mask - 1)) {
+ seq_printf(m, "%sunknown2_%#llx",
+ first ? "" : sep, flags2 & ~(mask - 1));
+ first = false;
+ }
}
-int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
+int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
+ const char *sep)
{
- __u64 mask = 1;
+ __u64 mask;
int i, ret = 0;
- for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
+ for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
if (flags & mask)
ret += snprintf(page + ret, count - ret, "%s%s",
ret ? sep : "", obd_connect_names[i]);
}
+
if (flags & ~(mask - 1))
ret += snprintf(page + ret, count - ret,
- "%sunknown_"LPX64,
+ "%sunknown_%#llx",
ret ? sep : "", flags & ~(mask - 1));
+
+ if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
+ return ret;
+
+ for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
+ if (flags2 & mask)
+ ret += snprintf(page + ret, count - ret, "%s%s",
+ ret ? sep : "", obd_connect_names[i]);
+ }
+
+ if (flags2 & ~(mask - 1))
+ ret += snprintf(page + ret, count - ret,
+ "%sunknown2_%#llx",
+ ret ? sep : "", flags2 & ~(mask - 1));
+
return ret;
}
EXPORT_SYMBOL(obd_connect_flags2str);
flags = ocd->ocd_connect_flags;
seq_printf(m, " connect_data:\n"
- " flags: "LPX64"\n"
- " instance: %u\n",
- ocd->ocd_connect_flags,
- ocd->ocd_instance);
+ " flags: %#llx\n"
+ " instance: %u\n",
+ ocd->ocd_connect_flags,
+ ocd->ocd_instance);
if (flags & OBD_CONNECT_VERSION)
seq_printf(m, " target_version: %u.%u.%u.%u\n",
- OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
- OBD_OCD_VERSION_MINOR(ocd->ocd_version),
- OBD_OCD_VERSION_PATCH(ocd->ocd_version),
- OBD_OCD_VERSION_FIX(ocd->ocd_version));
+ OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
+ OBD_OCD_VERSION_MINOR(ocd->ocd_version),
+ OBD_OCD_VERSION_PATCH(ocd->ocd_version),
+ OBD_OCD_VERSION_FIX(ocd->ocd_version));
if (flags & OBD_CONNECT_MDS)
seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
if (flags & OBD_CONNECT_GRANT)
if (flags & OBD_CONNECT_BRW_SIZE)
seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
if (flags & OBD_CONNECT_IBITS)
- seq_printf(m, " ibits_known: "LPX64"\n",
- ocd->ocd_ibits_known);
+ seq_printf(m, " ibits_known: %#llx\n",
+ ocd->ocd_ibits_known);
if (flags & OBD_CONNECT_GRANT_PARAM)
seq_printf(m, " grant_block_size: %d\n"
- " grant_inode_size: %d\n"
- " grant_extent_overhead: %d\n",
- ocd->ocd_blocksize,
- ocd->ocd_inodespace,
- ocd->ocd_grant_extent);
+ " grant_inode_size: %d\n"
+ " grant_max_extent_size: %d\n"
+ " grant_extent_tax: %d\n",
+ 1 << ocd->ocd_grant_blkbits,
+ 1 << ocd->ocd_grant_inobits,
+ ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
+ ocd->ocd_grant_tax_kb << 10);
if (flags & OBD_CONNECT_TRANSNO)
- seq_printf(m, " first_transno: "LPX64"\n",
- ocd->ocd_transno);
+ seq_printf(m, " first_transno: %#llx\n",
+ ocd->ocd_transno);
if (flags & OBD_CONNECT_CKSUM)
seq_printf(m, " cksum_types: %#x\n",
- ocd->ocd_cksum_types);
+ ocd->ocd_cksum_types);
if (flags & OBD_CONNECT_MAX_EASIZE)
seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
if (flags & OBD_CONNECT_MAXBYTES)
- seq_printf(m, " max_object_bytes: "LPU64"\n",
- ocd->ocd_maxbytes);
+ seq_printf(m, " max_object_bytes: %llu\n",
+ ocd->ocd_maxbytes);
if (flags & OBD_CONNECT_MULTIMODRPCS)
seq_printf(m, " max_mod_rpcs: %hu\n",
- ocd->ocd_maxmodrpcs);
+ ocd->ocd_maxmodrpcs);
}
int lprocfs_import_seq_show(struct seq_file *m, void *data)
ocd = &imp->imp_connect_data;
seq_printf(m, "import:\n"
- " name: %s\n"
- " target: %s\n"
- " state: %s\n"
- " connect_flags: [ ",
- obd->obd_name,
- obd2cli_tgt(obd),
- ptlrpc_import_state_name(imp->imp_state));
+ " name: %s\n"
+ " target: %s\n"
+ " state: %s\n"
+ " connect_flags: [ ",
+ obd->obd_name,
+ obd2cli_tgt(obd),
+ ptlrpc_import_state_name(imp->imp_state));
obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
- ", ");
+ imp->imp_connect_data.ocd_connect_flags2,
+ ", ");
seq_printf(m, " ]\n");
obd_connect_data_seqprint(m, ocd);
seq_printf(m, " import_flags: [ ");
obd_import_flags2str(imp, m);
seq_printf(m, " ]\n"
- " connection:\n"
- " failover_nids: [ ");
+ " connection:\n"
+ " failover_nids: [ ");
spin_lock(&imp->imp_lock);
j = 0;
list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
else
strncpy(nidstr, "<none>", sizeof(nidstr));
seq_printf(m, " ]\n"
- " current_connection: %s\n"
- " connection_attempts: %u\n"
- " generation: %u\n"
- " in-progress_invalidations: %u\n",
- nidstr,
- imp->imp_conn_cnt,
- imp->imp_generation,
- atomic_read(&imp->imp_inval_count));
+ " current_connection: %s\n"
+ " connection_attempts: %u\n"
+ " generation: %u\n"
+ " in-progress_invalidations: %u\n",
+ nidstr,
+ imp->imp_conn_cnt,
+ imp->imp_generation,
+ atomic_read(&imp->imp_inval_count));
spin_unlock(&imp->imp_lock);
if (obd->obd_svc_stats == NULL)
} else
ret.lc_sum = 0;
seq_printf(m, " rpcs:\n"
- " inflight: %u\n"
- " unregistering: %u\n"
- " timeouts: %u\n"
- " avg_waittime: "LPU64" %s\n",
- atomic_read(&imp->imp_inflight),
- atomic_read(&imp->imp_unregistering),
- atomic_read(&imp->imp_timeouts),
- ret.lc_sum, header->lc_units);
+ " inflight: %u\n"
+ " unregistering: %u\n"
+ " timeouts: %u\n"
+ " avg_waittime: %llu %s\n",
+ atomic_read(&imp->imp_inflight),
+ atomic_read(&imp->imp_unregistering),
+ atomic_read(&imp->imp_timeouts),
+ ret.lc_sum, header->lc_units);
k = 0;
for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
at_get(&imp->imp_at.iat_service_estimate[j]));
}
seq_printf(m, " service_estimates:\n"
- " services: %u sec\n"
- " network: %u sec\n",
- k,
- at_get(&imp->imp_at.iat_net_latency));
+ " services: %u sec\n"
+ " network: %u sec\n",
+ k,
+ at_get(&imp->imp_at.iat_net_latency));
seq_printf(m, " transactions:\n"
- " last_replay: "LPU64"\n"
- " peer_committed: "LPU64"\n"
- " last_checked: "LPU64"\n",
- imp->imp_last_replay_transno,
- imp->imp_peer_committed_transno,
- imp->imp_last_transno_checked);
+ " last_replay: %llu\n"
+ " peer_committed: %llu\n"
+ " last_checked: %llu\n",
+ imp->imp_last_replay_transno,
+ imp->imp_peer_committed_transno,
+ imp->imp_last_transno_checked);
/* avg data rates */
for (rw = 0; rw <= 1; rw++) {
do_div(sum, ret.lc_count);
ret.lc_sum = sum;
seq_printf(m, " %s_data_averages:\n"
- " bytes_per_rpc: "LPU64"\n",
- rw ? "write" : "read",
- ret.lc_sum);
+ " bytes_per_rpc: %llu\n",
+ rw ? "write" : "read",
+ ret.lc_sum);
}
k = (int)ret.lc_sum;
j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
__u64 sum = ret.lc_sum;
do_div(sum, ret.lc_count);
ret.lc_sum = sum;
- seq_printf(m, " %s_per_rpc: "LPU64"\n",
- header->lc_units, ret.lc_sum);
+ seq_printf(m, " %s_per_rpc: %llu\n",
+ header->lc_units, ret.lc_sum);
j = (int)ret.lc_sum;
if (j > 0)
seq_printf(m, " MB_per_sec: %u.%.02u\n",
- k / j, (100 * k / j) % 100);
+ k / j, (100 * k / j) % 100);
}
}
{
struct obd_device *obd = data;
__u64 flags;
+ __u64 flags2;
LPROCFS_CLIMP_CHECK(obd);
flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
- seq_printf(m, "flags="LPX64"\n", flags);
- obd_connect_seq_flags2str(m, flags, "\n");
+ flags2 = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags2;
+ seq_printf(m, "flags=%#llx\n", flags);
+ seq_printf(m, "flags2=%#llx\n", flags2);
+ obd_connect_seq_flags2str(m, flags, flags2, "\n");
seq_printf(m, "\n");
LPROCFS_CLIMP_EXIT(obd);
return 0;
}
return rc;
}
-EXPORT_SYMBOL(lprocfs_stats_alloc_one);
struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
enum lprocfs_stats_flags flags)
}
EXPORT_SYMBOL(lprocfs_free_stats);
+u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
+ enum lprocfs_fields_flags field)
+{
+ unsigned long flags = 0;
+ unsigned int num_cpu;
+ unsigned int i;
+ u64 ret = 0;
+
+ LASSERT(stats);
+
+ num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
+ for (i = 0; i < num_cpu; i++) {
+ struct lprocfs_counter *cntr;
+
+ if (!stats->ls_percpu[i])
+ continue;
+
+ cntr = lprocfs_stats_counter_get(stats, i, idx);
+ ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
+ stats->ls_flags, field);
+ }
+ lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
+ return ret;
+}
+EXPORT_SYMBOL(lprocfs_stats_collector);
+
void lprocfs_clear_stats(struct lprocfs_stats *stats)
{
struct lprocfs_counter *percpu_cntr;
struct lprocfs_counter_header *hdr;
struct lprocfs_counter ctr;
int idx = *(loff_t *)v;
- int rc = 0;
if (idx == 0) {
struct timeval now;
do_gettimeofday(&now);
- rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
- "snapshot_time", now.tv_sec, now.tv_usec);
- if (rc < 0)
- return rc;
+ seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
+ "snapshot_time", now.tv_sec, now.tv_usec);
}
hdr = &stats->ls_cnt_header[idx];
lprocfs_stats_collect(stats, idx, &ctr);
if (ctr.lc_count == 0)
- goto out;
+ return 0;
- rc = seq_printf(p, "%-25s "LPD64" samples [%s]", hdr->lc_name,
- ctr.lc_count, hdr->lc_units);
- if (rc < 0)
- goto out;
+ seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
+ ctr.lc_count, hdr->lc_units);
if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
- rc = seq_printf(p, " "LPD64" "LPD64" "LPD64,
- ctr.lc_min, ctr.lc_max, ctr.lc_sum);
- if (rc < 0)
- goto out;
+ seq_printf(p, " %lld %lld %lld",
+ ctr.lc_min, ctr.lc_max, ctr.lc_sum);
if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
- rc = seq_printf(p, " "LPD64, ctr.lc_sumsquare);
- if (rc < 0)
- goto out;
+ seq_printf(p, " %llu", ctr.lc_sumsquare);
}
- rc = seq_printf(p, "\n");
-out:
- return (rc < 0) ? rc : 0;
+ seq_putc(p, '\n');
+ return 0;
}
static const struct seq_operations lprocfs_stats_seq_sops = {
void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
{
- LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, get_root);
LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
- LPROCFS_MD_OP_INIT(num_private_stats, stats, find_cbdata);
LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
- LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
}
}
EXPORT_SYMBOL(lprocfs_read_helper);
-int lprocfs_write_helper(const char __user *buffer, unsigned long count,
- int *val)
-{
- return lprocfs_write_frac_helper(buffer, count, val, 1);
-}
-EXPORT_SYMBOL(lprocfs_write_helper);
-
-int lprocfs_write_frac_helper(const char __user *buffer, unsigned long count,
- int *val, int mult)
-{
- char kernbuf[20], *end, *pbuf;
-
- if (count > (sizeof(kernbuf) - 1))
- return -EINVAL;
-
- if (copy_from_user(kernbuf, buffer, count))
- return -EFAULT;
-
- kernbuf[count] = '\0';
- pbuf = kernbuf;
- if (*pbuf == '-') {
- mult = -mult;
- pbuf++;
- }
-
- *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
- if (pbuf == end)
- return -EINVAL;
-
- if (end != NULL && *end == '.') {
- int temp_val, pow = 1;
- int i;
-
- pbuf = end + 1;
- if (strlen(pbuf) > 5)
- pbuf[5] = '\0'; /*only allow 5bits fractional*/
-
- temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
-
- if (pbuf < end) {
- for (i = 0; i < (end - pbuf); i++)
- pow *= 10;
-
- *val += temp_val / pow;
- }
- }
- return 0;
-}
-EXPORT_SYMBOL(lprocfs_write_frac_helper);
-
int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
int mult)
{
}
EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
-int lprocfs_write_u64_helper(const char __user *buffer, unsigned long count,
- __u64 *val)
+/* Obtains the conversion factor for the unit specified */
+static int get_mult(char unit, __u64 *mult)
+{
+ __u64 units = 1;
+
+ switch (unit) {
+ /* peta, tera, giga, mega, and kilo */
+ case 'p':
+ case 'P':
+ units <<= 10;
+ case 't':
+ case 'T':
+ units <<= 10;
+ case 'g':
+ case 'G':
+ units <<= 10;
+ case 'm':
+ case 'M':
+ units <<= 10;
+ case 'k':
+ case 'K':
+ units <<= 10;
+ break;
+ /* some tests expect % to be accepted */
+ case '%':
+ units = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ *mult = units;
+
+ return 0;
+}
+
+/*
+ * Ensures the numeric string is valid. The function provides the final
+ * multiplier in the case a unit exists at the end of the string. It also
+ * locates the start of the whole and fractional parts (if any). This
+ * function modifies the string so kstrtoull can be used to parse both
+ * the whole and fraction portions. This function also figures out
+ * the base of the number.
+ */
+static int preprocess_numeric_str(char *buffer, __u64 *mult, __u64 def_mult,
+ bool allow_units, char **whole, char **frac,
+ unsigned int *base)
{
- return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
+ bool hit_decimal = false;
+ bool hit_unit = false;
+ int rc = 0;
+ char *start;
+ *mult = def_mult;
+ *whole = NULL;
+ *frac = NULL;
+ *base = 10;
+
+ /* a hex string if it starts with "0x" */
+ if (buffer[0] == '0' && tolower(buffer[1]) == 'x') {
+ *base = 16;
+ buffer += 2;
+ }
+
+ start = buffer;
+
+ while (*buffer) {
+ /* allow for a single new line before the null terminator */
+ if (*buffer == '\n') {
+ *buffer = '\0';
+ buffer++;
+
+ if (*buffer)
+ return -EINVAL;
+
+ break;
+ }
+
+ /* any chars after our unit indicates a malformed string */
+ if (hit_unit)
+ return -EINVAL;
+
+ /* ensure we only hit one decimal */
+ if (*buffer == '.') {
+ if (hit_decimal)
+ return -EINVAL;
+
+ /* if past start, there's a whole part */
+ if (start != buffer)
+ *whole = start;
+
+ *buffer = '\0';
+ start = buffer + 1;
+ hit_decimal = true;
+ } else if (!isdigit(*buffer) &&
+ !(*base == 16 && isxdigit(*buffer))) {
+ if (allow_units) {
+ /* if we allow units, attempt to get mult */
+ hit_unit = true;
+ rc = get_mult(*buffer, mult);
+ if (rc)
+ return rc;
+
+ /* string stops here, but keep processing */
+ *buffer = '\0';
+ } else {
+ /* bad string */
+ return -EINVAL;
+ }
+ }
+
+ buffer++;
+ }
+
+ if (hit_decimal) {
+ /* hit a decimal, make sure there's a fractional part */
+ if (!*start)
+ return -EINVAL;
+
+ *frac = start;
+ } else {
+ /* didn't hit a decimal, but may have a whole part */
+ if (start != buffer && *start)
+ *whole = start;
+ }
+
+ /* malformed string if we didn't get anything */
+ if (!*frac && !*whole)
+ return -EINVAL;
+
+ return 0;
}
-EXPORT_SYMBOL(lprocfs_write_u64_helper);
-int lprocfs_write_frac_u64_helper(const char __user *buffer,
- unsigned long count,
- __u64 *val, int mult)
+/*
+ * Parses a numeric string which can contain a whole and fraction portion
+ * into a __u64. Accepts a multiplier to apply to the value parsed. Also
+ * allows the string to have a unit at the end. The function handles
+ * wrapping of the final unsigned value.
+ */
+static int str_to_u64_parse(char *buffer, unsigned long count,
+ __u64 *val, __u64 def_mult, bool allow_units)
{
- char kernbuf[22], *end, *pbuf;
- __u64 whole, frac = 0, units;
- unsigned frac_d = 1;
+ __u64 whole = 0;
+ __u64 frac = 0;
+ unsigned int frac_d = 1;
+ __u64 wrap_indicator = ULLONG_MAX;
+ int rc = 0;
+ __u64 mult;
+ char *strwhole;
+ char *strfrac;
+ unsigned int base = 10;
- if (count > (sizeof(kernbuf) - 1))
- return -EINVAL;
+ rc = preprocess_numeric_str(buffer, &mult, def_mult, allow_units,
+ &strwhole, &strfrac, &base);
- if (copy_from_user(kernbuf, buffer, count))
- return -EFAULT;
+ if (rc)
+ return rc;
- kernbuf[count] = '\0';
- pbuf = kernbuf;
- if (*pbuf == '-') {
- mult = -mult;
- pbuf++;
- }
+ if (mult == 0) {
+ *val = 0;
+ return 0;
+ }
- whole = simple_strtoull(pbuf, &end, 10);
- if (pbuf == end)
- return -EINVAL;
+ /* the multiplier limits how large the value can be */
+ wrap_indicator /= mult;
- if (end != NULL && *end == '.') {
- int i;
- pbuf = end + 1;
+ if (strwhole) {
+ rc = kstrtoull(strwhole, base, &whole);
+ if (rc)
+ return rc;
- /* need to limit frac_d to a __u32 */
- if (strlen(pbuf) > 10)
- pbuf[10] = '\0';
+ if (whole > wrap_indicator)
+ return -ERANGE;
- frac = simple_strtoull(pbuf, &end, 10);
- /* count decimal places */
- for (i = 0; i < (end - pbuf); i++)
- frac_d *= 10;
- }
+ whole *= mult;
+ }
+
+ if (strfrac) {
+ if (strlen(strfrac) > 10)
+ strfrac[10] = '\0';
- units = 1;
- if (end != NULL) {
- switch (*end) {
- case 'p': case 'P':
- units <<= 10;
- case 't': case 'T':
- units <<= 10;
- case 'g': case 'G':
- units <<= 10;
- case 'm': case 'M':
- units <<= 10;
- case 'k': case 'K':
- units <<= 10;
+ rc = kstrtoull(strfrac, base, &frac);
+ if (rc)
+ return rc;
+
+ /* determine power of fractional portion */
+ while (*strfrac) {
+ frac_d *= base;
+ strfrac++;
}
+
+ /* fractional portion is too large to perform calculation */
+ if (frac > wrap_indicator)
+ return -ERANGE;
+
+ frac *= mult;
+ do_div(frac, frac_d);
}
- /* Specified units override the multiplier */
- if (units > 1)
- mult = mult < 0 ? -units : units;
- frac *= mult;
- do_div(frac, frac_d);
- *val = whole * mult + frac;
- return 0;
+ /* check that the sum of whole and fraction fits in u64 */
+ if (whole > (ULLONG_MAX - frac))
+ return -ERANGE;
+
+ *val = whole + frac;
+
+ return 0;
}
-EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
+
+/*
+ * This function parses numeric/hex strings into __s64. It accepts a multiplier
+ * which will apply to the value parsed. It also can allow the string to
+ * have a unit as the last character. The function handles overflow/underflow
+ * of the signed integer.
+ */
+static int str_to_s64_internal(const char __user *buffer, unsigned long count,
+ __s64 *val, __u64 def_mult, bool allow_units)
+{
+ char kernbuf[22];
+ __u64 tmp;
+ unsigned int offset = 0;
+ int signed sign = 1;
+ __u64 max = LLONG_MAX;
+ int rc = 0;
+
+ if (count > (sizeof(kernbuf) - 1))
+ return -EINVAL;
+
+ if (copy_from_user(kernbuf, buffer, count))
+ return -EFAULT;
+
+ kernbuf[count] = '\0';
+
+ /* keep track of our sign */
+ if (*kernbuf == '-') {
+ sign = -1;
+ offset++;
+ /* equivalent to max = -LLONG_MIN, avoids overflow */
+ max++;
+ }
+
+ rc = str_to_u64_parse(kernbuf + offset, count - offset,
+ &tmp, def_mult, allow_units);
+ if (rc)
+ return rc;
+
+ /* check for overflow/underflow */
+ if (max < tmp)
+ return -ERANGE;
+
+ *val = (__s64)tmp * sign;
+
+ return 0;
+}
+
+/**
+ * Convert a user string into a signed 64 bit number. This function produces
+ * an error when the value parsed from the string underflows or
+ * overflows. This function accepts strings which contain digits and
+ * optionally a decimal or hex strings which are prefixed with "0x".
+ *
+ * \param[in] buffer string consisting of numbers and optionally a decimal
+ * \param[in] count buffer length
+ * \param[in] val if successful, the value represented by the string
+ *
+ * \retval 0 on success
+ * \retval negative number on error
+ */
+int lprocfs_str_to_s64(const char __user *buffer, unsigned long count,
+ __s64 *val)
+{
+ return str_to_s64_internal(buffer, count, val, 1, false);
+}
+EXPORT_SYMBOL(lprocfs_str_to_s64);
+
+/**
+ * Convert a user string into a signed 64 bit number. This function produces
+ * an error when the value parsed from the string times multiplier underflows or
+ * overflows. This function only accepts strings that contains digits, an
+ * optional decimal, and a char representing a unit at the end. If a unit is
+ * specified in the string, the multiplier provided by the caller is ignored.
+ * This function can also accept hexadecimal strings which are prefixed with
+ * "0x".
+ *
+ * \param[in] buffer string consisting of numbers, a decimal, and a unit
+ * \param[in] count buffer length
+ * \param[in] val if successful, the value represented by the string
+ * \param[in] defunit default unit if string doesn't contain one
+ *
+ * \retval 0 on success
+ * \retval negative number on error
+ */
+int lprocfs_str_with_units_to_s64(const char __user *buffer,
+ unsigned long count, __s64 *val, char defunit)
+{
+ __u64 mult = 1;
+ int rc;
+
+ if (defunit != '1') {
+ rc = get_mult(defunit, &mult);
+ if (rc)
+ return rc;
+ }
+
+ return str_to_s64_internal(buffer, count, val, mult, true);
+}
+EXPORT_SYMBOL(lprocfs_str_with_units_to_s64);
static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
{
{
struct obd_device *dev = data;
struct client_obd *cli = &dev->u.cli;
- int rc;
spin_lock(&cli->cl_loi_list_lock);
- rc = seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
+ seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
spin_unlock(&cli->cl_loi_list_lock);
- return rc;
+ return 0;
}
EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff