void ath9k_spectral_init_debug(struct ath_softc *sc)
{
sc->rfs_chan_spec_scan = relay_open("spectral_scan",
sc->debug.debugfs_phy,
1024, 256, &rfs_spec_scan_cb,
NULL);
debugfs_create_file("spectral_scan_ctl",
S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc,
&fops_spec_scan_ctl);
debugfs_create_file("spectral_short_repeat",
S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc,
&fops_spectral_short_repeat);
debugfs_create_file("spectral_count",
S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc,
&fops_spectral_count);
debugfs_create_file("spectral_period",
S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc,
&fops_spectral_period);
debugfs_create_file("spectral_fft_period",
S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc,
&fops_spectral_fft_period);
}
void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv,
struct dentry *debugfs_phy)
{
spec_priv->rfs_chan_spec_scan = relay_open("spectral_scan",
debugfs_phy,
1024, 256, &rfs_spec_scan_cb,
NULL);
debugfs_create_file("spectral_scan_ctl",
S_IRUSR | S_IWUSR,
debugfs_phy, spec_priv,
&fops_spec_scan_ctl);
debugfs_create_file("spectral_short_repeat",
S_IRUSR | S_IWUSR,
debugfs_phy, spec_priv,
&fops_spectral_short_repeat);
debugfs_create_file("spectral_count",
S_IRUSR | S_IWUSR,
debugfs_phy, spec_priv,
&fops_spectral_count);
debugfs_create_file("spectral_period",
S_IRUSR | S_IWUSR,
debugfs_phy, spec_priv,
&fops_spectral_period);
debugfs_create_file("spectral_fft_period",
S_IRUSR | S_IWUSR,
debugfs_phy, spec_priv,
&fops_spectral_fft_period);
}
static int setup_relay(void)
{
relay = relay_open("kmem_cache_relay", NULL, RELAY_BUFFER_SIZE,
RELAY_NUM_BUFFERS, &kt_relay_callbacks, NULL);
if (!relay) {
pr_err("Error creating relay channel\n");
return -ENOMEM;
}
return 0;
}
int kp_transport_init(ktap_State *ks)
{
char prefix[32] = {0};
sprintf(prefix, "trace-%d-", (int)task_tgid_vnr(current));
G(ks)->ktap_chan = relay_open(prefix, ktap_dir, 4096, 10,
&relay_callbacks, NULL);
if (!G(ks)->ktap_chan) {
pr_err("ktap: relay_open failed\n");
return -1;
}
return 0;
}
static int do_kvm_trace_enable(struct kvm_user_trace_setup *kuts)
{
struct kvm_trace *kt;
int i, r = -ENOMEM;
if (!kuts->buf_size || !kuts->buf_nr)
return -EINVAL;
kt = kzalloc(sizeof(*kt), GFP_KERNEL);
if (!kt)
goto err;
r = -EIO;
atomic_set(&kt->lost_records, 0);
kt->lost_file = debugfs_create_file("lost_records", 0444, kvm_debugfs_dir,
kt, &kvm_trace_lost_ops);
if (!kt->lost_file)
goto err;
kt->rchan = relay_open("trace", kvm_debugfs_dir, kuts->buf_size,
kuts->buf_nr, &kvm_relay_callbacks, kt);
if (!kt->rchan)
goto err;
kvm_trace = kt;
for (i = 0; i < ARRAY_SIZE(kvm_trace_probes); i++) {
struct kvm_trace_probe *p = &kvm_trace_probes[i];
r = marker_probe_register(p->name, p->format, p->probe_func, p);
if (r)
printk(KERN_INFO "Unable to register probe %s\n",
p->name);
}
kvm_trace->trace_state = KVM_TRACE_STATE_RUNNING;
return 0;
err:
if (kt) {
if (kt->lost_file)
debugfs_remove(kt->lost_file);
if (kt->rchan)
relay_close(kt->rchan);
kfree(kt);
}
return r;
}
static int __init my_init(void)
{
int j, k;
char data[64];
spinlock_t dumb_lock;
mychan = relay_open(fname, NULL, SB_SIZE, N_SB, &relay_callbacks, NULL);
/* can't use smp_processor_id() properly otherwise */
spin_lock_init(&dumb_lock);
for (k = 0; k < 10; k++) { /* do this for a minute */
spin_lock(&dumb_lock);
for (j = 0; j < 10; j++) {
memset(data, 0, 64);
sprintf(data, "data=%d\n", j * k);
relay_write(mychan, data, 64);
}
printk(KERN_INFO "Relay Channel %s loaded on cpu=%d.\n", fname,
smp_processor_id());
spin_unlock(&dumb_lock);
msleep(6000);
}
return 0;
}
static int guc_log_relay_create(struct intel_guc_log *log)
{
struct intel_guc *guc = log_to_guc(log);
struct drm_i915_private *dev_priv = guc_to_i915(guc);
struct rchan *guc_log_relay_chan;
size_t n_subbufs, subbuf_size;
int ret;
lockdep_assert_held(&log->relay.lock);
/* Keep the size of sub buffers same as shared log buffer */
subbuf_size = log->vma->size;
/*
* Store up to 8 snapshots, which is large enough to buffer sufficient
* boot time logs and provides enough leeway to User, in terms of
* latency, for consuming the logs from relay. Also doesn't take
* up too much memory.
*/
n_subbufs = 8;
guc_log_relay_chan = relay_open("guc_log",
dev_priv->drm.primary->debugfs_root,
subbuf_size, n_subbufs,
&relay_callbacks, dev_priv);
if (!guc_log_relay_chan) {
DRM_ERROR("Couldn't create relay chan for GuC logging\n");
ret = -ENOMEM;
return ret;
}
GEM_BUG_ON(guc_log_relay_chan->subbuf_size < subbuf_size);
log->relay.channel = guc_log_relay_chan;
return 0;
}
int st_relayfs_open(void)
{
int n,m;
//clear and fill in entries table with names/default
memset( &relay_entries, 0x00, sizeof(relay_entries) );
for(n=0;n<RELAY_NUMBER_OF_TYPES;n++) {
strcpy(relay_entries[n].name, relay_type_names[n]);
relay_entries[n].active = 0;
}
//clear count table
for(n=0;n<RELAY_NUMBER_OF_SOURCES;n++)
for(m=0;m<RELAY_NUMBER_OF_TYPES;m++)
relay_source_item_counts[n][m] = 0;
//set up our debugfs dir and entries
strelay_dir = debugfs_create_dir("st_relay", NULL);
if (!strelay_dir) {
printk("%s: ERROR: Couldn't create debugfs app directory.\n", __FUNCTION__);
return 1;
} else {
st_relay_chan = relay_open("data", strelay_dir, SUBBUF_SIZE,
N_SUBBUFS, &st_relayfs_callbacks, 0);
if(st_relay_chan) {
for(n=0;n<RELAY_NUMBER_OF_TYPES;n++) {
relay_entries[n].dentry =
debugfs_create_u32(relay_entries[n].name, 0666, strelay_dir, &(relay_entries[n].active));
}
} else {
printk("st_relayfs_open: ERROR: Couldn't create relay channel.\n");
}
}
return 0;
}
/*
* Setup everything required to start tracing
*/
int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
struct block_device *bdev,
struct blk_user_trace_setup *buts)
{
struct blk_trace *old_bt, *bt = NULL;
struct dentry *dir = NULL;
int ret, i;
if (!buts->buf_size || !buts->buf_nr)
return -EINVAL;
strncpy(buts->name, name, BLKTRACE_BDEV_SIZE);
buts->name[BLKTRACE_BDEV_SIZE - 1] = '\0';
/*
* some device names have larger paths - convert the slashes
* to underscores for this to work as expected
*/
for (i = 0; i < strlen(buts->name); i++)
if (buts->name[i] == '/')
buts->name[i] = '_';
bt = kzalloc(sizeof(*bt), GFP_KERNEL);
if (!bt)
return -ENOMEM;
ret = -ENOMEM;
bt->sequence = alloc_percpu(unsigned long);
if (!bt->sequence)
goto err;
bt->msg_data = __alloc_percpu(BLK_TN_MAX_MSG, __alignof__(char));
if (!bt->msg_data)
goto err;
ret = -ENOENT;
mutex_lock(&blk_tree_mutex);
if (!blk_tree_root) {
blk_tree_root = debugfs_create_dir("block", NULL);
if (!blk_tree_root) {
mutex_unlock(&blk_tree_mutex);
goto err;
}
}
mutex_unlock(&blk_tree_mutex);
dir = debugfs_create_dir(buts->name, blk_tree_root);
if (!dir)
goto err;
bt->dir = dir;
bt->dev = dev;
atomic_set(&bt->dropped, 0);
ret = -EIO;
bt->dropped_file = debugfs_create_file("dropped", 0444, dir, bt,
&blk_dropped_fops);
if (!bt->dropped_file)
goto err;
bt->msg_file = debugfs_create_file("msg", 0222, dir, bt, &blk_msg_fops);
if (!bt->msg_file)
goto err;
bt->rchan = relay_open("trace", dir, buts->buf_size,
buts->buf_nr, &blk_relay_callbacks, bt);
if (!bt->rchan)
goto err;
bt->act_mask = buts->act_mask;
if (!bt->act_mask)
bt->act_mask = (u16) -1;
blk_trace_setup_lba(bt, bdev);
/* overwrite with user settings */
if (buts->start_lba)
bt->start_lba = buts->start_lba;
if (buts->end_lba)
bt->end_lba = buts->end_lba;
bt->pid = buts->pid;
bt->trace_state = Blktrace_setup;
ret = -EBUSY;
old_bt = xchg(&q->blk_trace, bt);
if (old_bt) {
(void) xchg(&q->blk_trace, old_bt);
goto err;
}
if (atomic_inc_return(&blk_probes_ref) == 1)
blk_register_tracepoints();
return 0;
err:
blk_trace_free(bt);
return ret;
}
/*
* Setup everything required to start tracing
*/
static int blk_trace_setup(request_queue_t *q, struct block_device *bdev,
char __user *arg)
{
struct blk_user_trace_setup buts;
struct blk_trace *old_bt, *bt = NULL;
struct dentry *dir = NULL;
char b[BDEVNAME_SIZE];
int ret, i;
if (copy_from_user(&buts, arg, sizeof(buts)))
return -EFAULT;
if (!buts.buf_size || !buts.buf_nr)
return -EINVAL;
strcpy(buts.name, bdevname(bdev, b));
/*
* some device names have larger paths - convert the slashes
* to underscores for this to work as expected
*/
for (i = 0; i < strlen(buts.name); i++)
if (buts.name[i] == '/')
buts.name[i] = '_';
if (copy_to_user(arg, &buts, sizeof(buts)))
return -EFAULT;
ret = -ENOMEM;
bt = kzalloc(sizeof(*bt), GFP_KERNEL);
if (!bt)
goto err;
bt->sequence = alloc_percpu(unsigned long);
if (!bt->sequence)
goto err;
ret = -ENOENT;
dir = blk_create_tree(buts.name);
if (!dir)
goto err;
bt->dir = dir;
bt->dev = bdev->bd_dev;
atomic_set(&bt->dropped, 0);
ret = -EIO;
bt->dropped_file = debugfs_create_file("dropped", 0444, dir, bt, &blk_dropped_fops);
if (!bt->dropped_file)
goto err;
bt->rchan = relay_open("trace", dir, buts.buf_size, buts.buf_nr, &blk_relay_callbacks);
if (!bt->rchan)
goto err;
bt->rchan->private_data = bt;
bt->act_mask = buts.act_mask;
if (!bt->act_mask)
bt->act_mask = (u16) -1;
bt->start_lba = buts.start_lba;
bt->end_lba = buts.end_lba;
if (!bt->end_lba)
bt->end_lba = -1ULL;
bt->pid = buts.pid;
bt->trace_state = Blktrace_setup;
ret = -EBUSY;
old_bt = xchg(&q->blk_trace, bt);
if (old_bt) {
(void) xchg(&q->blk_trace, old_bt);
goto err;
}
return 0;
err:
if (dir)
blk_remove_tree(dir);
if (bt) {
if (bt->dropped_file)
debugfs_remove(bt->dropped_file);
if (bt->sequence)
free_percpu(bt->sequence);
if (bt->rchan)
relay_close(bt->rchan);
kfree(bt);
}
return ret;
}
void
test_fn(char *name)
{
relay_open(name, NULL, 1024*128, 4, NULL, NULL);
}
/*
* Setup everything required to start tracing
*/
int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
struct blk_user_trace_setup *buts)
{
struct blk_trace *old_bt, *bt = NULL;
struct dentry *dir = NULL;
int ret, i;
if (!buts->buf_size || !buts->buf_nr)
return -EINVAL;
strcpy(buts->name, name);
/*
* some device names have larger paths - convert the slashes
* to underscores for this to work as expected
*/
for (i = 0; i < strlen(buts->name); i++)
if (buts->name[i] == '/')
buts->name[i] = '_';
ret = -ENOMEM;
bt = kzalloc(sizeof(*bt), GFP_KERNEL);
if (!bt)
goto err;
bt->sequence = alloc_percpu(unsigned long);
if (!bt->sequence)
goto err;
ret = -ENOENT;
dir = blk_create_tree(buts->name);
if (!dir)
goto err;
bt->dir = dir;
bt->dev = dev;
atomic_set(&bt->dropped, 0);
ret = -EIO;
bt->dropped_file = debugfs_create_file("dropped", 0444, dir, bt, &blk_dropped_fops);
if (!bt->dropped_file)
goto err;
bt->rchan = relay_open("trace", dir, buts->buf_size,
buts->buf_nr, &blk_relay_callbacks, bt);
if (!bt->rchan)
goto err;
bt->act_mask = buts->act_mask;
if (!bt->act_mask)
bt->act_mask = (u16) -1;
bt->start_lba = buts->start_lba;
bt->end_lba = buts->end_lba;
if (!bt->end_lba)
bt->end_lba = -1ULL;
bt->pid = buts->pid;
bt->trace_state = Blktrace_setup;
ret = -EBUSY;
old_bt = xchg(&q->blk_trace, bt);
if (old_bt) {
(void) xchg(&q->blk_trace, old_bt);
goto err;
}
return 0;
err:
if (dir)
blk_remove_tree(dir);
if (bt) {
if (bt->dropped_file)
debugfs_remove(bt->dropped_file);
free_percpu(bt->sequence);
if (bt->rchan)
relay_close(bt->rchan);
kfree(bt);
}
return ret;
}