#define _LTTNG_ABI_H
#include <linux/fs.h>
+#include <linux/types.h>
/*
* Major/minor version of ABI exposed to lttng tools. Major number
#define LTTNG_KERNEL_EVENT_NOTIFIER_PADDING1 16
struct lttng_kernel_event_notifier {
struct lttng_kernel_event event;
+ uint64_t error_counter_index;
char padding[LTTNG_KERNEL_EVENT_NOTIFIER_PADDING1];
} __attribute__((packed));
+enum lttng_kernel_counter_arithmetic {
+ LTTNG_KERNEL_COUNTER_ARITHMETIC_MODULAR = 1,
+};
+
+enum lttng_kernel_counter_bitness {
+ LTTNG_KERNEL_COUNTER_BITNESS_32 = 1,
+ LTTNG_KERNEL_COUNTER_BITNESS_64 = 2,
+};
+
+struct lttng_kernel_counter_dimension {
+ uint64_t size;
+ uint64_t underflow_index;
+ uint64_t overflow_index;
+ uint8_t has_underflow;
+ uint8_t has_overflow;
+} __attribute__((packed));
+
+#define LTTNG_KERNEL_COUNTER_DIMENSION_MAX 4
+struct lttng_kernel_counter_conf {
+ uint32_t arithmetic; /* enum lttng_kernel_counter_arithmetic */
+ uint32_t bitness; /* enum lttng_kernel_counter_bitness */
+ uint32_t number_dimensions;
+ int64_t global_sum_step;
+ struct lttng_kernel_counter_dimension dimensions[LTTNG_KERNEL_COUNTER_DIMENSION_MAX];
+} __attribute__((packed));
+
+struct lttng_kernel_counter_index {
+ uint32_t number_dimensions;
+ uint64_t dimension_indexes[LTTNG_KERNEL_COUNTER_DIMENSION_MAX];
+} __attribute__((packed));
+
+struct lttng_kernel_counter_value {
+ int64_t value;
+ uint8_t underflow;
+ uint8_t overflow;
+} __attribute__((packed));
+
+#define LTTNG_KERNEL_COUNTER_READ_PADDING 32
+struct lttng_kernel_counter_read {
+ struct lttng_kernel_counter_index index;
+ int32_t cpu; /* -1 for global counter, >= 0 for specific cpu. */
+ struct lttng_kernel_counter_value value; /* output */
+ char padding[LTTNG_KERNEL_COUNTER_READ_PADDING];
+} __attribute__((packed));
+
+#define LTTNG_KERNEL_COUNTER_AGGREGATE_PADDING 32
+struct lttng_kernel_counter_aggregate {
+ struct lttng_kernel_counter_index index;
+ struct lttng_kernel_counter_value value; /* output */
+ char padding[LTTNG_KERNEL_COUNTER_AGGREGATE_PADDING];
+} __attribute__((packed));
+
+#define LTTNG_KERNEL_COUNTER_CLEAR_PADDING 32
+struct lttng_kernel_counter_clear {
+ struct lttng_kernel_counter_index index;
+ char padding[LTTNG_KERNEL_COUNTER_CLEAR_PADDING];
+} __attribute__((packed));
+
#define LTTNG_KERNEL_EVENT_NOTIFIER_NOTIFICATION_PADDING 32
struct lttng_kernel_event_notifier_notification {
uint64_t token;
#define LTTNG_KERNEL_CONTEXT \
_IOW(0xF6, 0x71, struct lttng_kernel_context)
-/* Event, Event notifier, Channel and Session ioctl */
+/* Event, Event notifier, Channel, Counter and Session ioctl */
/* lttng/abi-old.h reserve 0x80 and 0x81. */
#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
+/* Trigger group and session ioctl */
+#define LTTNG_KERNEL_COUNTER \
+ _IOW(0xF6, 0x84, struct lttng_kernel_counter_conf)
+
/* Event and Event notifier FD ioctl */
#define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
#define LTTNG_KERNEL_ADD_CALLSITE _IO(0xF6, 0x91)
/* Event notifier file descriptor ioctl */
#define LTTNG_KERNEL_CAPTURE _IO(0xF6, 0xB8)
+/* Counter file descriptor ioctl */
+#define LTTNG_KERNEL_COUNTER_READ \
+ _IOWR(0xF6, 0xC0, struct lttng_kernel_counter_read)
+#define LTTNG_KERNEL_COUNTER_AGGREGATE \
+ _IOWR(0xF6, 0xC1, struct lttng_kernel_counter_aggregate)
+#define LTTNG_KERNEL_COUNTER_CLEAR \
+ _IOW(0xF6, 0xC2, struct lttng_kernel_counter_clear)
+
+
/*
* LTTng-specific ioctls for the lib ringbuffer.
*
struct lttng_event_notifier {
enum lttng_event_type evtype; /* First field. */
uint64_t user_token;
+ uint64_t error_counter_index;
int enabled;
int registered; /* has reg'd tracepoint probe */
const struct lttng_event_desc *desc;
struct lttng_event_notifier_enabler {
struct lttng_enabler base;
+ uint64_t error_counter_index;
struct list_head node; /* List of event_notifier enablers */
struct lttng_event_notifier_group *group;
char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
};
+struct lttng_counter {
+ struct file *file; /* File associated to counter. */
+ struct file *owner;
+ struct lttng_counter_transport *transport;
+ struct lib_counter *counter;
+ struct lttng_counter_ops *ops;
+};
+
struct lttng_event_notifier_group {
struct file *file; /* File associated to event notifier group */
struct file *notif_file; /* File used to expose notifications to userspace. */
int lttng_session_statedump(struct lttng_session *session);
void metadata_cache_destroy(struct kref *kref);
+struct lttng_counter *lttng_kernel_counter_create(
+ const char *counter_transport_name, size_t number_dimensions,
+ const size_t *dimensions_sizes);
+int lttng_kernel_counter_read(struct lttng_counter *counter,
+ const size_t *dimension_indexes, int32_t cpu,
+ int64_t *val, bool *overflow, bool *underflow);
+int lttng_kernel_counter_aggregate(struct lttng_counter *counter,
+ const size_t *dimension_indexes, int64_t *val,
+ bool *overflow, bool *underflow);
+int lttng_kernel_counter_clear(struct lttng_counter *counter,
+ const size_t *dimension_indexes);
+
+
struct lttng_event_notifier_group *lttng_event_notifier_group_create(void);
+int lttng_event_notifier_group_create_error_counter(
+ struct file *event_notifier_group_file,
+ const struct lttng_kernel_counter_conf *error_counter_conf);
void lttng_event_notifier_group_destroy(
struct lttng_event_notifier_group *event_notifier_group);
struct lttng_event_notifier *lttng_event_notifier_create(
const struct lttng_event_desc *event_notifier_desc,
uint64_t id,
+ uint64_t error_counter_idx,
struct lttng_event_notifier_group *event_notifier_group,
struct lttng_kernel_event_notifier *event_notifier_param,
void *filter,
struct lttng_event_notifier *_lttng_event_notifier_create(
const struct lttng_event_desc *event_notifier_desc,
uint64_t id,
+ uint64_t error_counter_idx,
struct lttng_event_notifier_group *event_notifier_group,
struct lttng_kernel_event_notifier *event_notifier_param,
void *filter,
static int put_u64(uint64_t val, unsigned long arg);
static int put_u32(uint32_t val, unsigned long arg);
+static int validate_zeroed_padding(char *p, size_t len)
+{
+ size_t i;
+
+ for (i = 0; i < len; i++) {
+ if (p[i])
+ return -1;
+ }
+ return 0;
+}
+
/*
* Teardown management: opened file descriptors keep a refcount on the module,
* so it can only exit when all file descriptors are closed.
return 0;
}
+static
+int lttng_counter_release(struct inode *inode, struct file *file)
+{
+ struct lttng_counter *counter = file->private_data;
+
+ if (counter) {
+ /*
+ * Do not destroy the counter itself. Wait of the owner
+ * (event_notifier group) to be destroyed.
+ */
+ fput(counter->owner);
+ }
+
+ return 0;
+}
+
+static
+long lttng_counter_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct lttng_counter *counter = file->private_data;
+ size_t indexes[LTTNG_KERNEL_COUNTER_DIMENSION_MAX] = { 0 };
+ int i;
+
+ switch (cmd) {
+ case LTTNG_KERNEL_COUNTER_READ:
+ {
+ struct lttng_kernel_counter_read local_counter_read;
+ struct lttng_kernel_counter_read __user *ucounter_read =
+ (struct lttng_kernel_counter_read __user *) arg;
+ bool overflow, underflow;
+ int64_t value;
+ int32_t cpu;
+ int ret;
+
+ if (copy_from_user(&local_counter_read, ucounter_read,
+ sizeof(local_counter_read)))
+ return -EFAULT;
+ if (validate_zeroed_padding(local_counter_read.padding,
+ sizeof(local_counter_read.padding)))
+ return -EINVAL;
+
+ /* Cast all indexes into size_t. */
+ for (i = 0; i < local_counter_read.index.number_dimensions; i++)
+ indexes[i] = (size_t) local_counter_read.index.dimension_indexes[i];
+ cpu = local_counter_read.cpu;
+
+ ret = lttng_kernel_counter_read(counter, indexes, cpu, &value,
+ &overflow, &underflow);
+ if (ret)
+ return ret;
+ local_counter_read.value.value = value;
+ local_counter_read.value.overflow = overflow;
+ local_counter_read.value.underflow = underflow;
+
+ if (copy_to_user(&ucounter_read->value, &local_counter_read.value,
+ sizeof(local_counter_read.value)))
+ return -EFAULT;
+
+ return 0;
+ }
+ case LTTNG_KERNEL_COUNTER_AGGREGATE:
+ {
+ struct lttng_kernel_counter_aggregate local_counter_aggregate;
+ struct lttng_kernel_counter_aggregate __user *ucounter_aggregate =
+ (struct lttng_kernel_counter_aggregate __user *) arg;
+ bool overflow, underflow;
+ int64_t value;
+ int ret;
+
+ if (copy_from_user(&local_counter_aggregate, ucounter_aggregate,
+ sizeof(local_counter_aggregate)))
+ return -EFAULT;
+ if (validate_zeroed_padding(local_counter_aggregate.padding,
+ sizeof(local_counter_aggregate.padding)))
+ return -EINVAL;
+
+ /* Cast all indexes into size_t. */
+ for (i = 0; i < local_counter_aggregate.index.number_dimensions; i++)
+ indexes[i] = (size_t) local_counter_aggregate.index.dimension_indexes[i];
+
+ ret = lttng_kernel_counter_aggregate(counter, indexes, &value,
+ &overflow, &underflow);
+ if (ret)
+ return ret;
+ local_counter_aggregate.value.value = value;
+ local_counter_aggregate.value.overflow = overflow;
+ local_counter_aggregate.value.underflow = underflow;
+
+ if (copy_to_user(&ucounter_aggregate->value, &local_counter_aggregate.value,
+ sizeof(local_counter_aggregate.value)))
+ return -EFAULT;
+
+ return 0;
+ }
+ case LTTNG_KERNEL_COUNTER_CLEAR:
+ {
+ struct lttng_kernel_counter_clear local_counter_clear;
+ struct lttng_kernel_counter_clear __user *ucounter_clear =
+ (struct lttng_kernel_counter_clear __user *) arg;
+
+ if (copy_from_user(&local_counter_clear, ucounter_clear,
+ sizeof(local_counter_clear)))
+ return -EFAULT;
+ if (validate_zeroed_padding(local_counter_clear.padding,
+ sizeof(local_counter_clear.padding)))
+ return -EINVAL;
+
+ /* Cast all indexes into size_t. */
+ for (i = 0; i < local_counter_clear.index.number_dimensions; i++)
+ indexes[i] = (size_t) local_counter_clear.index.dimension_indexes[i];
+
+ return lttng_kernel_counter_clear(counter, indexes);
+ }
+ default:
+ WARN_ON_ONCE(1);
+ return -ENOSYS;
+ }
+}
+
+static const struct file_operations lttng_counter_fops = {
+ .owner = THIS_MODULE,
+ .release = lttng_counter_release,
+ .unlocked_ioctl = lttng_counter_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = lttng_counter_ioctl,
+#endif
+};
+
+
static
enum tracker_type get_tracker_type(struct lttng_kernel_tracker_args *tracker)
{
* It will stay invariant for the rest of the session.
*/
event_notifier = lttng_event_notifier_create(NULL,
- event_notifier_param->event.token, event_notifier_group,
+ event_notifier_param->event.token,
+ event_notifier_param->error_counter_index,
+ event_notifier_group,
event_notifier_param, NULL,
event_notifier_param->event.instrumentation);
WARN_ON_ONCE(!event_notifier);
return ret;
}
+static
+long lttng_abi_event_notifier_group_create_error_counter(
+ struct file *event_notifier_group_file,
+ const struct lttng_kernel_counter_conf *error_counter_conf)
+{
+ int counter_fd, ret;
+ char *counter_transport_name;
+ size_t counter_len;
+ struct lttng_counter *counter = NULL;
+ struct file *counter_file;
+ struct lttng_event_notifier_group *event_notifier_group =
+ (struct lttng_event_notifier_group *) event_notifier_group_file->private_data;
+
+ if (error_counter_conf->arithmetic != LTTNG_KERNEL_COUNTER_ARITHMETIC_MODULAR) {
+ printk(KERN_ERR "LTTng: event_notifier: Error counter of the wrong arithmetic type.\n");
+ return -EINVAL;
+ }
+
+ if (error_counter_conf->number_dimensions != 1) {
+ printk(KERN_ERR "LTTng: event_notifier: Error counter has more than one dimension.\n");
+ return -EINVAL;
+ }
+
+ switch (error_counter_conf->bitness) {
+ case LTTNG_KERNEL_COUNTER_BITNESS_64:
+ counter_transport_name = "counter-per-cpu-64-modular";
+ break;
+ case LTTNG_KERNEL_COUNTER_BITNESS_32:
+ counter_transport_name = "counter-per-cpu-32-modular";
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * Lock sessions to provide mutual exclusion against concurrent
+ * modification of event_notifier group, which would result in
+ * overwriting the error counter if set concurrently.
+ */
+ lttng_lock_sessions();
+
+ if (event_notifier_group->error_counter) {
+ printk(KERN_ERR "Error counter already created in event_notifier group\n");
+ ret = -EBUSY;
+ goto fd_error;
+ }
+
+ counter_fd = lttng_get_unused_fd();
+ if (counter_fd < 0) {
+ ret = counter_fd;
+ goto fd_error;
+ }
+
+ counter_file = anon_inode_getfile("[lttng_counter]",
+ <tng_counter_fops,
+ NULL, O_RDONLY);
+ if (IS_ERR(counter_file)) {
+ ret = PTR_ERR(counter_file);
+ goto file_error;
+ }
+
+ counter_len = error_counter_conf->dimensions[0].size;
+
+ if (!atomic_long_add_unless(&event_notifier_group_file->f_count, 1, LONG_MAX)) {
+ ret = -EOVERFLOW;
+ goto refcount_error;
+ }
+
+ counter = lttng_kernel_counter_create(counter_transport_name,
+ 1, &counter_len);
+ if (!counter) {
+ ret = -EINVAL;
+ goto counter_error;
+ }
+
+ event_notifier_group->error_counter = counter;
+ event_notifier_group->error_counter_len = counter_len;
+
+ counter->file = counter_file;
+ counter->owner = event_notifier_group->file;
+ counter_file->private_data = counter;
+ /* Ownership transferred. */
+ counter = NULL;
+
+ fd_install(counter_fd, counter_file);
+ lttng_unlock_sessions();
+
+ return counter_fd;
+
+counter_error:
+ atomic_long_dec(&event_notifier_group_file->f_count);
+refcount_error:
+ fput(counter_file);
+file_error:
+ put_unused_fd(counter_fd);
+fd_error:
+ lttng_unlock_sessions();
+ return ret;
+}
+
static
long lttng_event_notifier_group_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
return -EFAULT;
return lttng_abi_create_event_notifier(file, &uevent_notifier_param);
}
+ case LTTNG_KERNEL_COUNTER:
+ {
+ struct lttng_kernel_counter_conf uerror_counter_conf;
+
+ if (copy_from_user(&uerror_counter_conf,
+ (struct lttng_kernel_counter_conf __user *) arg,
+ sizeof(uerror_counter_conf)))
+ return -EFAULT;
+ return lttng_abi_event_notifier_group_create_error_counter(file,
+ &uerror_counter_conf);
+ }
default:
return -ENOIOCTLCMD;
}
return ret;
}
+static
+void record_error(struct lttng_event_notifier *event_notifier)
+{
+
+ struct lttng_event_notifier_group *event_notifier_group = event_notifier->group;
+ size_t dimension_index[1];
+ int ret;
+
+ dimension_index[0] = event_notifier->error_counter_index;
+
+ ret = event_notifier_group->error_counter->ops->counter_add(
+ event_notifier_group->error_counter->counter,
+ dimension_index, 1);
+ if (ret)
+ WARN_ON_ONCE(1);
+}
+
static
void notification_send(struct lttng_event_notifier_notification *notif,
struct lttng_event_notifier *event_notifier)
lttng_alignof(kernel_notif), -1);
ret = event_notifier_group->ops->event_reserve(&ctx, 0);
if (ret < 0) {
- //TODO: error handling with counter maps
- //silently drop for now.
- WARN_ON_ONCE(1);
+ record_error(event_notifier);
return;
}
return NULL;
}
+static
+struct lttng_counter_transport *lttng_counter_transport_find(const char *name)
+{
+ struct lttng_counter_transport *transport;
+
+ list_for_each_entry(transport, <tng_counter_transport_list, node) {
+ if (!strcmp(transport->name, name))
+ return transport;
+ }
+ return NULL;
+}
+
+struct lttng_counter *lttng_kernel_counter_create(
+ const char *counter_transport_name,
+ size_t number_dimensions, const size_t *dimensions_sizes)
+{
+ struct lttng_counter *counter = NULL;
+ struct lttng_counter_transport *counter_transport = NULL;
+
+ counter_transport = lttng_counter_transport_find(counter_transport_name);
+ if (!counter_transport) {
+ printk(KERN_WARNING "LTTng: counter transport %s not found.\n",
+ counter_transport_name);
+ goto notransport;
+ }
+ if (!try_module_get(counter_transport->owner)) {
+ printk(KERN_WARNING "LTTng: Can't lock counter transport module.\n");
+ goto notransport;
+ }
+
+ counter = lttng_kvzalloc(sizeof(struct lttng_counter), GFP_KERNEL);
+ if (!counter)
+ goto nomem;
+
+ /* Create event notifier error counter. */
+ counter->ops = &counter_transport->ops;
+ counter->transport = counter_transport;
+
+ counter->counter = counter->ops->counter_create(
+ number_dimensions, dimensions_sizes, 0);
+ if (!counter->counter) {
+ goto create_error;
+ }
+
+ return counter;
+
+create_error:
+ lttng_kvfree(counter);
+nomem:
+ if (counter_transport)
+ module_put(counter_transport->owner);
+notransport:
+ return NULL;
+}
+
struct lttng_event_notifier_group *lttng_event_notifier_group_create(void)
{
struct lttng_transport *transport = NULL;
&event_notifier_group->event_notifiers_head, list)
_lttng_event_notifier_destroy(event_notifier);
+ if (event_notifier_group->error_counter) {
+ struct lttng_counter *error_counter = event_notifier_group->error_counter;
+ error_counter->ops->counter_destroy(error_counter->counter);
+ module_put(error_counter->transport->owner);
+ lttng_kvfree(error_counter);
+ event_notifier_group->error_counter = NULL;
+ }
+
event_notifier_group->ops->channel_destroy(event_notifier_group->chan);
module_put(event_notifier_group->transport->owner);
list_del(&event_notifier_group->node);
wake_up_interruptible(&stream->read_wait);
}
-static
-struct lttng_counter_transport *lttng_counter_transport_find(const char *name)
-{
- struct lttng_counter_transport *transport;
-
- list_for_each_entry(transport, <tng_counter_transport_list, node) {
- if (!strcmp(transport->name, name))
- return transport;
- }
- return NULL;
-}
/*
* Supports event creation while tracing session is active.
struct lttng_event_notifier *_lttng_event_notifier_create(
const struct lttng_event_desc *event_desc,
- uint64_t token, struct lttng_event_notifier_group *event_notifier_group,
+ uint64_t token, uint64_t error_counter_index,
+ struct lttng_event_notifier_group *event_notifier_group,
struct lttng_kernel_event_notifier *event_notifier_param,
void *filter, enum lttng_kernel_instrumentation itype)
{
event_notifier->group = event_notifier_group;
event_notifier->user_token = token;
+ event_notifier->error_counter_index = error_counter_index;
event_notifier->num_captures = 0;
event_notifier->filter = filter;
event_notifier->instrumentation = itype;
list_add(&event_notifier->list, &event_notifier_group->event_notifiers_head);
hlist_add_head(&event_notifier->hlist, head);
+
+ /*
+ * Clear the error counter bucket. The sessiond keeps track of which
+ * bucket is currently in use. We trust it.
+ */
+ if (event_notifier_group->error_counter) {
+ size_t dimension_index[1];
+
+ /*
+ * Check that the index is within the boundary of the counter.
+ */
+ if (event_notifier->error_counter_index >= event_notifier_group->error_counter_len) {
+ printk(KERN_INFO "LTTng: event_notifier: Error counter index out-of-bound: counter-len=%zu, index=%llu\n",
+ event_notifier_group->error_counter_len, event_notifier->error_counter_index);
+ ret = -EINVAL;
+ goto register_error;
+ }
+
+ dimension_index[0] = event_notifier->error_counter_index;
+ ret = event_notifier_group->error_counter->ops->counter_clear(
+ event_notifier_group->error_counter->counter,
+ dimension_index);
+ if (ret) {
+ printk(KERN_INFO "LTTng: event_notifier: Unable to clear error counter bucket %llu\n",
+ event_notifier->error_counter_index);
+ goto register_error;
+ }
+ }
+
return event_notifier;
register_error:
return ERR_PTR(ret);
}
+int lttng_kernel_counter_read(struct lttng_counter *counter,
+ const size_t *dim_indexes, int32_t cpu,
+ int64_t *val, bool *overflow, bool *underflow)
+{
+ return counter->ops->counter_read(counter->counter, dim_indexes,
+ cpu, val, overflow, underflow);
+}
+
+int lttng_kernel_counter_aggregate(struct lttng_counter *counter,
+ const size_t *dim_indexes, int64_t *val,
+ bool *overflow, bool *underflow)
+{
+ return counter->ops->counter_aggregate(counter->counter, dim_indexes,
+ val, overflow, underflow);
+}
+
+int lttng_kernel_counter_clear(struct lttng_counter *counter,
+ const size_t *dim_indexes)
+{
+ return counter->ops->counter_clear(counter->counter, dim_indexes);
+}
+
struct lttng_event *lttng_event_create(struct lttng_channel *chan,
struct lttng_kernel_event *event_param,
void *filter,
struct lttng_event_notifier *lttng_event_notifier_create(
const struct lttng_event_desc *event_desc,
- uint64_t id, struct lttng_event_notifier_group *event_notifier_group,
+ uint64_t id, uint64_t error_counter_index,
+ struct lttng_event_notifier_group *event_notifier_group,
struct lttng_kernel_event_notifier *event_notifier_param,
void *filter, enum lttng_kernel_instrumentation itype)
{
mutex_lock(&sessions_mutex);
event_notifier = _lttng_event_notifier_create(event_desc, id,
- event_notifier_group, event_notifier_param, filter, itype);
+ error_counter_index, event_notifier_group,
+ event_notifier_param, filter, itype);
mutex_unlock(&sessions_mutex);
return event_notifier;
}
*/
event_notifier = _lttng_event_notifier_create(desc,
event_notifier_enabler->base.user_token,
+ event_notifier_enabler->error_counter_index,
event_notifier_group, NULL, NULL,
LTTNG_KERNEL_TRACEPOINT);
if (IS_ERR(event_notifier)) {
INIT_LIST_HEAD(&event_notifier_enabler->base.filter_bytecode_head);
INIT_LIST_HEAD(&event_notifier_enabler->capture_bytecode_head);
+ event_notifier_enabler->error_counter_index = event_notifier_param->error_counter_index;
event_notifier_enabler->num_captures = 0;
memcpy(&event_notifier_enabler->base.event_param, &event_notifier_param->event,
struct lttng_event_notifier_group *group = event_notifier_enabler->group;
struct lttng_kernel_event_notifier event_notifier_param;
uint64_t user_token = event_notifier_enabler->base.user_token;
+ uint64_t error_counter_index = event_notifier_enabler->error_counter_index;
struct lttng_enabler *base_enabler = lttng_event_notifier_enabler_as_enabler(
event_notifier_enabler);
struct hlist_head *unknown_dispatch_list;
event_notifier_param.event.u.syscall.entryexit = entryexit;
notifier = _lttng_event_notifier_create(desc, user_token,
- group, &event_notifier_param, NULL,
+ error_counter_index, group, &event_notifier_param, NULL,
event_notifier_param.event.instrumentation);
if (IS_ERR(notifier)) {
printk(KERN_INFO "Unable to create unknown notifier %s\n",
struct lttng_event_notifier_group *group = event_notifier_enabler->group;
const struct lttng_event_desc *desc;
uint64_t user_token = event_notifier_enabler->base.user_token;
+ uint64_t error_counter_index = event_notifier_enabler->error_counter_index;
unsigned int i;
int ret = 0;
event_notifier_param.event.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
event_notifier_param.event.instrumentation = LTTNG_KERNEL_SYSCALL;
- event_notifier = _lttng_event_notifier_create(desc, user_token, group,
- &event_notifier_param, filter,
- event_notifier_param.event.instrumentation);
+ event_notifier = _lttng_event_notifier_create(desc, user_token,
+ error_counter_index, group, &event_notifier_param,
+ filter, event_notifier_param.event.instrumentation);
if (IS_ERR(event_notifier)) {
printk(KERN_INFO "Unable to create event_notifier %s\n",
desc->name);
projects / lttng-modules.git / commitdiff
