static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct l2tp_eth *priv = netdev_priv(dev);
struct l2tp_session *session = priv->session;
unsigned int len = skb->len;
int ret = l2tp_xmit_skb(session, skb, session->hdr_len);
if (likely(ret == NET_XMIT_SUCCESS)) {
atomic_long_add(len, &priv->tx_bytes);
atomic_long_inc(&priv->tx_packets);
} else {
atomic_long_inc(&priv->tx_dropped);
}
return NETDEV_TX_OK;
}
/* --------------------------- Kprobes handler ----------------------------- */
static int ma_pre_handler(struct kprobe *p, struct pt_regs *regs)
{
struct ma_symbol_data *data =
container_of(p, struct ma_symbol_data, kp);
atomic_long_inc(&data->calls);
return 0;
}
/*
* ima_add_violation - add violation to measurement list.
*
* Violations are flagged in the measurement list with zero hash values.
* By extending the PCR with 0xFF's instead of with zeroes, the PCR
* value is invalidated.
*/
void ima_add_violation(struct file *file, const unsigned char *filename,
struct integrity_iint_cache *iint,
const char *op, const char *cause)
{
struct ima_template_entry *entry;
struct inode *inode = file_inode(file);
struct ima_event_data event_data = {iint, file, filename, NULL, 0,
cause};
int violation = 1;
int result;
/* can overflow, only indicator */
atomic_long_inc(&ima_htable.violations);
result = ima_alloc_init_template(&event_data, &entry);
if (result < 0) {
result = -ENOMEM;
goto err_out;
}
result = ima_store_template(entry, violation, inode,
filename, CONFIG_IMA_MEASURE_PCR_IDX);
if (result < 0)
ima_free_template_entry(entry);
err_out:
integrity_audit_msg(AUDIT_INTEGRITY_PCR, inode, filename,
op, cause, result, 0);
}
static void update_mcs_stats(enum mcs_op op, unsigned long clks)
{
atomic_long_inc(&mcs_op_statistics[op].count);
atomic_long_add(clks, &mcs_op_statistics[op].total);
if (mcs_op_statistics[op].max < clks)
mcs_op_statistics[op].max = clks;
}
static void update_mcs_stats(enum mcs_op op, unsigned long clks)
{
unsigned long nsec;
nsec = CLKS2NSEC(clks);
atomic_long_inc(&mcs_op_statistics[op].count);
atomic_long_add(nsec, &mcs_op_statistics[op].total);
if (mcs_op_statistics[op].max < nsec)
mcs_op_statistics[op].max = nsec;
}
/**
* ubifs_load_znode - load znode to TNC cache.
* @c: UBIFS file-system description object
* @zbr: znode branch
* @parent: znode's parent
* @iip: index in parent
*
* This function loads znode pointed to by @zbr into the TNC cache and
* returns pointer to it in case of success and a negative error code in case
* of failure.
*/
struct ubifs_znode *ubifs_load_znode(struct ubifs_info *c,
struct ubifs_zbranch *zbr,
struct ubifs_znode *parent, int iip)
{
int err;
struct ubifs_znode *znode;
ubifs_assert(!zbr->znode);
/*
* A slab cache is not presently used for znodes because the znode size
* depends on the fanout which is stored in the superblock.
*/
znode = kzalloc(c->max_znode_sz, GFP_NOFS);
if (!znode)
return ERR_PTR(-ENOMEM);
err = read_znode(c, zbr->lnum, zbr->offs, zbr->len, znode);
if (err)
goto out;
atomic_long_inc(&c->clean_zn_cnt);
/*
* Increment the global clean znode counter as well. It is OK that
* global and per-FS clean znode counters may be inconsistent for some
* short time (because we might be preempted at this point), the global
* one is only used in shrinker.
*/
atomic_long_inc(&ubifs_clean_zn_cnt);
zbr->znode = znode;
znode->parent = parent;
znode->time = get_seconds();
znode->iip = iip;
return znode;
out:
kfree(znode);
return ERR_PTR(err);
}
static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct l2tp_eth *priv = netdev_priv(dev);
struct l2tp_session *session = priv->session;
atomic_long_add(skb->len, &priv->tx_bytes);
atomic_long_inc(&priv->tx_packets);
l2tp_xmit_skb(session, skb, session->hdr_len);
return NETDEV_TX_OK;
}
void copy_io_context(struct io_context **pdst, struct io_context **psrc)
{
struct io_context *src = *psrc;
struct io_context *dst = *pdst;
if (src) {
BUG_ON(atomic_long_read(&src->refcount) == 0);
atomic_long_inc(&src->refcount);
put_io_context(dst);
*pdst = src;
}
}
static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb, int data_len)
{
struct l2tp_eth_sess *spriv = l2tp_session_priv(session);
struct net_device *dev = spriv->dev;
struct l2tp_eth *priv = netdev_priv(dev);
if (session->debug & L2TP_MSG_DATA) {
unsigned int length;
length = min(32u, skb->len);
if (!pskb_may_pull(skb, length))
goto error;
pr_debug("%s: eth recv\n", session->name);
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, skb->data, length);
}
if (!pskb_may_pull(skb, ETH_HLEN))
goto error;
secpath_reset(skb);
/* checksums verified by L2TP */
skb->ip_summed = CHECKSUM_NONE;
skb_dst_drop(skb);
nf_reset(skb);
if (dev_forward_skb(dev, skb) == NET_RX_SUCCESS) {
atomic_long_inc(&priv->rx_packets);
atomic_long_add(data_len, &priv->rx_bytes);
} else {
atomic_long_inc(&priv->rx_errors);
}
return;
error:
atomic_long_inc(&priv->rx_errors);
kfree_skb(skb);
}
/**
* ovs_vport_record_error - indicate device error to generic stats layer
*
* @vport: vport that encountered the error
* @err_type: one of enum vport_err_type types to indicate the error type
*
* If using the vport generic stats layer indicate that an error of the given
* type has occurred.
*/
static void ovs_vport_record_error(struct vport *vport,
enum vport_err_type err_type)
{
switch (err_type) {
case VPORT_E_RX_DROPPED:
atomic_long_inc(&vport->err_stats.rx_dropped);
break;
case VPORT_E_RX_ERROR:
atomic_long_inc(&vport->err_stats.rx_errors);
break;
case VPORT_E_TX_DROPPED:
atomic_long_inc(&vport->err_stats.tx_dropped);
break;
case VPORT_E_TX_ERROR:
atomic_long_inc(&vport->err_stats.tx_errors);
break;
}
}
// consumer function
void * consumer(void * arg) {
int myid= *(int*)arg;
int * data;
ff::Barrier::instance()->doBarrier(myid);
while(1) {
if (q->pop((void**)&data)) {
printf("(%d %ld) ", myid, (long)data);
atomic_long_inc(&counter);
}
if ((long)(atomic_long_read(&counter))>= SIZE) break;
}
pthread_exit(NULL);
return NULL;
}
static inline void inc_slabs_node(struct kmem_cache *s, int node, int objects)
{
struct kmem_cache_node *n = get_node(s, node);
/*
* May be called early in order to allocate a slab for the
* kmem_cache_node structure. Solve the chicken-egg
* dilemma by deferring the increment of the count during
* bootstrap (see early_kmem_cache_node_alloc).
*/
if (n) {
atomic_long_inc(&n->nr_slabs);
atomic_long_add(objects, &n->total_objects);
}
}
// Multipush: push a bach of items.
inline bool multipush() {
if (buf_w->multipush(multipush_buf,MULTIPUSH_BUFFER_SIZE)) {
mcnt=0;
return true;
}
if (fixedsize) return false;
// try to get a new buffer
INTERNAL_BUFFER_T * t = pool.next_w(size);
assert(t); // if (!t) return false; // EWOULDBLOCK
buf_w = t;
in_use_buffers++;
buf_w->multipush(multipush_buf,MULTIPUSH_BUFFER_SIZE);
mcnt=0;
#if defined(UBUFFER_STATS)
atomic_long_inc(&numBuffers);
#endif
return true;
}
static void iscsit_handle_time2retain_timeout(unsigned long data)
{
struct iscsi_session *sess = (struct iscsi_session *) data;
struct iscsi_portal_group *tpg = sess->tpg;
struct se_portal_group *se_tpg = &tpg->tpg_se_tpg;
spin_lock_bh(&se_tpg->session_lock);
if (sess->time2retain_timer_flags & ISCSI_TF_STOP) {
spin_unlock_bh(&se_tpg->session_lock);
return;
}
if (atomic_read(&sess->session_reinstatement)) {
pr_err("Exiting Time2Retain handler because"
" session_reinstatement=1\n");
spin_unlock_bh(&se_tpg->session_lock);
return;
}
sess->time2retain_timer_flags |= ISCSI_TF_EXPIRED;
pr_err("Time2Retain timer expired for SID: %u, cleaning up"
" iSCSI session.\n", sess->sid);
{
struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
if (tiqn) {
spin_lock(&tiqn->sess_err_stats.lock);
strcpy(tiqn->sess_err_stats.last_sess_fail_rem_name,
(void *)sess->sess_ops->InitiatorName);
tiqn->sess_err_stats.last_sess_failure_type =
ISCSI_SESS_ERR_CXN_TIMEOUT;
tiqn->sess_err_stats.cxn_timeout_errors++;
atomic_long_inc(&sess->conn_timeout_errors);
spin_unlock(&tiqn->sess_err_stats.lock);
}
}
spin_unlock_bh(&se_tpg->session_lock);
target_put_session(sess->se_sess);
}
/**
* Push Method: push the input value into the queue.\n
* If fixedsize has been set to \p true, this method may
* return false. This means EWOULDBLOCK
* and the call should be retried.
*
* \param data Data to be pushed in the buffer
* \return \p false if \p fixedsize is set to \p true OR if \p data is NULL
* OR if there is not a buffer to write to.
*
* \return \p true if the push succedes.
*/
inline bool push(void * const data) {
/* NULL values cannot be pushed in the queue */
if (!data || !buf_w) return false;
// If fixedsize has been set to \p true, this method may
// return false. This means EWOULDBLOCK
if (!available()) {
if (fixedsize) return false;
// try to get a new buffer
INTERNAL_BUFFER_T * t = pool.next_w(size);
assert(t); //if (!t) return false; // EWOULDBLOCK
buf_w = t;
in_use_buffers++;
#if defined(UBUFFER_STATS)
atomic_long_inc(&numBuffers);
#endif
}
//DBG(assert(buf_w->push(data)); return true;);
buf_w->push(data);
return true;
}
/**
* scfs_readpages
*
* Parameters:
* @file: upper file
* @*mapping: address_space struct for the file
* @*pages: list of pages to read in
* @nr_pages: number of pages to read in
*
* Return:
* SCFS_SUCCESS if success, otherwise if error
*
* Description:
* - Asynchronously read pages for readahead. A scaling number of background threads
* will read & decompress them in a slightly deferred but parallelized manner.
*/
static int
scfs_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
{
struct scfs_inode_info *sii = SCFS_I(file->f_mapping->host);
struct scfs_sb_info *sbi = SCFS_S(file->f_mapping->host->i_sb);
struct file *lower_file = NULL;
struct page *page;
struct scfs_cinfo cinfo;
loff_t i_size;
pgoff_t start, end;
int page_idx, page_idx_readahead = 1024, ret = 0;
int readahead_page = 0;
int prev_cbi = 0;
int prev_cluster = -1, cur_cluster = -1;
int cluster_idx = 0;
i_size = i_size_read(&sii->vfs_inode);
if (!i_size) {
SCFS_PRINT("file %s: i_size is zero, "
"flags 0x%x sii->clust_info_size %d\n",
file->f_path.dentry->d_name.name, sii->flags,
sii->cinfo_array_size);
return 0;
}
#ifdef SCFS_ASYNC_READ_PROFILE
atomic_add(nr_pages, &sbi->scfs_standby_readpage_count);
#endif
#ifdef SCFS_NOTIFY_RANDOM_READ
lower_file = scfs_lower_file(file);
if (!lower_file) {
SCFS_PRINT_ERROR("file %s: lower file is null!\n",
file->f_path.dentry->d_name.name);
return -EINVAL;
}
/* if the read request was random (enough), hint it to the lower file.
* scfs_sequential_page_number is the tunable threshold.
* filemap.c will later on refer to this FMODE_RANDOM flag.
*/
spin_lock(&lower_file->f_lock);
if (nr_pages > sbi->scfs_sequential_page_number)
lower_file->f_mode &= ~FMODE_RANDOM;
else
lower_file->f_mode |= FMODE_RANDOM;
spin_unlock(&lower_file->f_lock);
#endif
lower_file = scfs_lower_file(file);
page = list_entry(pages->prev, struct page, lru);
cluster_idx = page->index / (sii->cluster_size / PAGE_SIZE);
if (sii->compressed) {
mutex_lock(&sii->cinfo_mutex);
ret = get_cluster_info(file, cluster_idx, &cinfo);
mutex_unlock(&sii->cinfo_mutex);
if (ret) {
SCFS_PRINT_ERROR("err in get_cluster_info, ret : %d,"
"i_size %lld\n", ret, i_size);
return ret;
}
if (!cinfo.size || cinfo.size > sii->cluster_size) {
SCFS_PRINT_ERROR("file %s: cinfo is invalid, "
"clust %u cinfo.size %u\n",
file->f_path.dentry->d_name.name,
cluster_idx, cinfo.size);
return -EINVAL;
}
start = (pgoff_t)(cinfo.offset / PAGE_SIZE);
} else {
start = (pgoff_t)(cluster_idx * sii->cluster_size / PAGE_SIZE);
}
cluster_idx = (page->index + nr_pages - 1) / (sii->cluster_size / PAGE_SIZE);
if (sii->compressed) {
mutex_lock(&sii->cinfo_mutex);
ret = get_cluster_info(file, cluster_idx, &cinfo);
mutex_unlock(&sii->cinfo_mutex);
if (ret) {
SCFS_PRINT_ERROR("err in get_cluster_info, ret : %d,"
"i_size %lld\n", ret, i_size);
return ret;
}
if (!cinfo.size || cinfo.size > sii->cluster_size) {
SCFS_PRINT_ERROR("file %s: cinfo is invalid, "
"clust %u cinfo.size %u\n",
file->f_path.dentry->d_name.name,
cluster_idx, cinfo.size);
return -EINVAL;
}
end = (pgoff_t)((cinfo.offset + cinfo.size -1) / PAGE_SIZE);
} else {
end = (pgoff_t)(((cluster_idx + 1) * sii->cluster_size - 1) / PAGE_SIZE);
/* check upper inode size */
/* out of range? on compressed file, it is handled returning error,
which one is right? */
if (end > (i_size / PAGE_SIZE))
end = (i_size / PAGE_SIZE);
}
force_page_cache_readahead(lower_file->f_mapping, lower_file,
start, (unsigned long)(end - start +1));
for (page_idx = 0; page_idx < nr_pages; page_idx++) {
page = list_entry(pages->prev, struct page, lru);
list_del(&page->lru);
if (PageReadahead(page))
page_idx_readahead = page_idx;
ret = add_to_page_cache_lru(page, mapping,
page->index, GFP_KERNEL);
if (ret) {
SCFS_PRINT("adding to page cache failed, "
"page %x page->idx %d ret %d\n",
page, page->index, ret);
page_cache_release(page);
continue;
}
/* memory buffer is full or synchronous read request -
call scfs_readpage to read now */
if (sbi->page_buffer_next_filling_index_smb ==
MAX_PAGE_BUFFER_SIZE_SMB || page_idx < page_idx_readahead) {
cur_cluster = PAGE_TO_CLUSTER_INDEX(page, sii);
if (prev_cluster == cur_cluster && prev_cbi > 0)
prev_cbi = _scfs_readpage(file, page, prev_cbi - 1);
else
prev_cbi = _scfs_readpage(file, page, -1);
prev_cluster = cur_cluster;
page_cache_release(page); /* refer line 701 */
} else {
spin_lock(&sbi->spinlock_smb);
/* Queue is not full so add the page into the queue.
Also, here we increase file->f_count to protect
the file structs from multi-threaded accesses */
atomic_long_inc(&SCFS_F(file)->lower_file->f_count);
atomic_long_inc(&file->f_count);
sbi->page_buffer_smb[sbi->page_buffer_next_filling_index_smb] = page;
sbi->file_buffer_smb[sbi->page_buffer_next_filling_index_smb++] = file;
/* check whether page buffer is full and set page buffer full if needed */
if (((sbi->page_buffer_next_filling_index_smb == MAX_PAGE_BUFFER_SIZE_SMB) &&
sbi->page_buffer_next_io_index_smb == 0) ||
(sbi->page_buffer_next_filling_index_smb ==
sbi->page_buffer_next_io_index_smb))
sbi->page_buffer_next_filling_index_smb = MAX_PAGE_BUFFER_SIZE_SMB;
else if (sbi->page_buffer_next_filling_index_smb == MAX_PAGE_BUFFER_SIZE_SMB)
sbi->page_buffer_next_filling_index_smb = 0;
spin_unlock(&sbi->spinlock_smb);
++readahead_page;
}
//page_cache_release(page);
}
if (readahead_page > 0)
wakeup_smb_thread(sbi);
SCFS_PRINT("<e>\n");
#ifdef SCFS_ASYNC_READ_PROFILE
atomic_sub(nr_pages, &sbi->scfs_standby_readpage_count);
#endif
return 0;
}
/*
* Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
*
* Also, at this point we assume that we ARE dealing exclusively with
* VLAN packets, or packets that should be made into VLAN packets based
* on a default VLAN ID.
*
* NOTE: Should be similar to ethernet/eth.c.
*
* SANITY NOTE: This method is called when a packet is moving up the stack
* towards userland. To get here, it would have already passed
* through the ethernet/eth.c eth_type_trans() method.
* SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be
* stored UNALIGNED in the memory. RISC systems don't like
* such cases very much...
* SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be
* aligned, so there doesn't need to be any of the unaligned
* stuff. It has been commented out now... --Ben
*
*/
int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype, struct net_device *orig_dev)
{
struct vlan_hdr *vhdr;
struct vlan_pcpu_stats *rx_stats;
struct net_device *vlan_dev;
u16 vlan_id;
u16 vlan_tci;
skb = skb_share_check(skb, GFP_ATOMIC);
if (skb == NULL)
goto err_free;
if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
goto err_free;
vhdr = (struct vlan_hdr *)skb->data;
vlan_tci = ntohs(vhdr->h_vlan_TCI);
vlan_id = vlan_tci & VLAN_VID_MASK;
rcu_read_lock();
vlan_dev = vlan_find_dev(dev, vlan_id);
/* If the VLAN device is defined, we use it.
* If not, and the VID is 0, it is a 802.1p packet (not
* really a VLAN), so we will just netif_rx it later to the
* original interface, but with the skb->proto set to the
* wrapped proto: we do nothing here.
*/
if (!vlan_dev) {
if (vlan_id) {
pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
__func__, vlan_id, dev->name);
goto err_unlock;
}
rx_stats = NULL;
} else {
skb->dev = vlan_dev;
rx_stats = this_cpu_ptr(vlan_dev_info(skb->dev)->vlan_pcpu_stats);
u64_stats_update_begin(&rx_stats->syncp);
rx_stats->rx_packets++;
rx_stats->rx_bytes += skb->len;
skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
pr_debug("%s: priority: %u for TCI: %hu\n",
__func__, skb->priority, vlan_tci);
switch (skb->pkt_type) {
case PACKET_BROADCAST:
/* Yeah, stats collect these together.. */
/* stats->broadcast ++; // no such counter :-( */
break;
case PACKET_MULTICAST:
rx_stats->rx_multicast++;
break;
case PACKET_OTHERHOST:
/* Our lower layer thinks this is not local, let's make
* sure.
* This allows the VLAN to have a different MAC than the
* underlying device, and still route correctly.
*/
if (!compare_ether_addr(eth_hdr(skb)->h_dest,
skb->dev->dev_addr))
skb->pkt_type = PACKET_HOST;
break;
default:
break;
}
u64_stats_update_end(&rx_stats->syncp);
}
skb_pull_rcsum(skb, VLAN_HLEN);
vlan_set_encap_proto(skb, vhdr);
if (vlan_dev) {
skb = vlan_check_reorder_header(skb);
if (!skb) {
rx_stats->rx_errors++;
goto err_unlock;
}
}
netif_rx(skb);
rcu_read_unlock();
return NET_RX_SUCCESS;
err_unlock:
rcu_read_unlock();
err_free:
atomic_long_inc(&dev->rx_dropped);
kfree_skb(skb);
return NET_RX_DROP;
}
value_type operator++(int) // postfix
{ value_type v(atomic_long_read(&_rep)); atomic_long_inc(&_rep); return v; }
struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again)
{
int err;
unsigned long flags;
struct xfrm_state *x;
struct sk_buff *skb2;
struct softnet_data *sd;
netdev_features_t esp_features = features;
struct xfrm_offload *xo = xfrm_offload(skb);
if (!xo)
return skb;
if (!(features & NETIF_F_HW_ESP))
esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK);
x = skb->sp->xvec[skb->sp->len - 1];
if (xo->flags & XFRM_GRO || x->xso.flags & XFRM_OFFLOAD_INBOUND)
return skb;
local_irq_save(flags);
sd = this_cpu_ptr(&softnet_data);
err = !skb_queue_empty(&sd->xfrm_backlog);
local_irq_restore(flags);
if (err) {
*again = true;
return skb;
}
if (skb_is_gso(skb)) {
struct net_device *dev = skb->dev;
if (unlikely(!x->xso.offload_handle || (x->xso.dev != dev))) {
struct sk_buff *segs;
/* Packet got rerouted, fixup features and segment it. */
esp_features = esp_features & ~(NETIF_F_HW_ESP
| NETIF_F_GSO_ESP);
segs = skb_gso_segment(skb, esp_features);
if (IS_ERR(segs)) {
kfree_skb(skb);
atomic_long_inc(&dev->tx_dropped);
return NULL;
} else {
consume_skb(skb);
skb = segs;
}
}
}
if (!skb->next) {
x->outer_mode->xmit(x, skb);
xo->flags |= XFRM_DEV_RESUME;
err = x->type_offload->xmit(x, skb, esp_features);
if (err) {
if (err == -EINPROGRESS)
return NULL;
XFRM_INC_STATS(xs_net(x), LINUX_MIB_XFRMOUTSTATEPROTOERROR);
kfree_skb(skb);
return NULL;
}
skb_push(skb, skb->data - skb_mac_header(skb));
return skb;
}
skb2 = skb;
do {
struct sk_buff *nskb = skb2->next;
skb2->next = NULL;
xo = xfrm_offload(skb2);
xo->flags |= XFRM_DEV_RESUME;
x->outer_mode->xmit(x, skb2);
err = x->type_offload->xmit(x, skb2, esp_features);
if (!err) {
skb2->next = nskb;
} else if (err != -EINPROGRESS) {
XFRM_INC_STATS(xs_net(x), LINUX_MIB_XFRMOUTSTATEPROTOERROR);
skb2->next = nskb;
kfree_skb_list(skb2);
return NULL;
} else {
if (skb == skb2)
skb = nskb;
if (!skb)
return NULL;
goto skip_push;
}
skb_push(skb2, skb2->data - skb_mac_header(skb2));
skip_push:
skb2 = nskb;
} while (skb2);
return skb;
}
/**
* get_io_context - increment reference count to io_context
* @ioc: io_context to get
*
* Increment reference count to @ioc.
*/
void get_io_context(struct io_context *ioc)
{
BUG_ON(atomic_long_read(&ioc->refcount) <= 0);
atomic_long_inc(&ioc->refcount);
}
inline void qdio_perf_stat_inc(atomic_long_t *count)
{
if (qdio_performance_stats)
atomic_long_inc(count);
}
/**
* workingset_activation - note a page activation
* @page: page that is being activated
*/
void workingset_activation(struct page *page)
{
atomic_long_inc(&page_zone(page)->inactive_age);
}
