perf_output_read identifier - Linux source code next-20260811

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linux

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FIXME
- FIXME
  - next-20260811

Defined in 1 files as a function:

kernel/events/core.c, line 8257 (as a function)

Referenced in 1 files:

kernel/events/core.c
- line 8319
- line 8978

Smatch caller information:

kernel/events/core.c perf_event_read_event() -> perf_output_read()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	4376037895315054592
PARAM_VALUE	0	handle->event	4096-ptr_max
PARAM_VALUE	0	handle->flags	0
PARAM_VALUE	0	handle->rb	4096-ptr_max
PARAM_VALUE	1	event	4096-ptr_max
PARAM_VALUE	1	event->parent->child_mutex.dep_map->name	0-255
PARAM_VALUE	1	event->parent->child_mutex.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	1	event->parent->child_mutex.first_waiter->list.prev->prev	5159360019465732096
PARAM_VALUE	1	event->parent->child_mutex.osq.tail.counter	0-s32max
PARAM_VALUE	1	event->parent->child_mutex.wait_lock.dep_map->name	0-255
PARAM_VALUE	1	event->parent->child_mutex.wait_lock.owner	(-1)
PARAM_VALUE	1	event->parent->child_mutex.wait_lock.owner_cpu	u32max
DATA_SOURCE	1	event	$0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	event->group_leader->hw->addr_filters_gen	0-u64max
HOST_DATA	1	event->group_leader->hw->freq_count_stamp	0-u64max
HOST_DATA	1	event->group_leader->hw->freq_time_stamp	0-u64max
HOST_DATA	1	event->group_leader->hw->interrupts	0-u64max
HOST_DATA	1	event->group_leader->hw->interrupts_seq	0-u64max
HOST_DATA	1	event->group_leader->hw->sample_period	0-u64max
HOST_DATA	1	event->group_leader->hw->state	s32min-s32max
HOST_DATA	1	event->group_leader->hw.aux_config	0-u64max
HOST_DATA	1	event->group_leader->hw.aux_paused	0-u32max
HOST_DATA	1	event->group_leader->hw.branch_reg.alloc	s32min-s32max
HOST_DATA	1	event->group_leader->hw.branch_reg.config	0-u64max
HOST_DATA	1	event->group_leader->hw.branch_reg.idx	s32min-s32max
HOST_DATA	1	event->group_leader->hw.branch_reg.reg	0-u32max
HOST_DATA	1	event->group_leader->hw.conf	0-u64max
HOST_DATA	1	event->group_leader->hw.conf1	0-u64max
HOST_DATA	1	event->group_leader->hw.config	0-u64max
HOST_DATA	1	event->group_leader->hw.config1	0-u64max
HOST_DATA	1	event->group_leader->hw.config_base	0-u64max
HOST_DATA	1	event->group_leader->hw.dyn_constraint	0-u64max
HOST_DATA	1	event->group_leader->hw.event_base	0-u64max
HOST_DATA	1	event->group_leader->hw.event_base_rdpmc	s32min-s32max
HOST_DATA	1	event->group_leader->hw.extra_reg.alloc	s32min-s32max
HOST_DATA	1	event->group_leader->hw.extra_reg.config	0-u64max
HOST_DATA	1	event->group_leader->hw.extra_reg.idx	s32min-s32max
HOST_DATA	1	event->group_leader->hw.extra_reg.reg	0-u32max
HOST_DATA	1	event->group_leader->hw.flags	s32min-s32max
HOST_DATA	1	event->group_leader->hw.hrtimer._softexpires	s64min-s64max
HOST_DATA	1	event->group_leader->hw.hrtimer.is_hard	0-1
HOST_DATA	1	event->group_leader->hw.hrtimer.is_lazy	0-1
HOST_DATA	1	event->group_leader->hw.hrtimer.is_queued	0-1
HOST_DATA	1	event->group_leader->hw.hrtimer.is_rel	0-1
HOST_DATA	1	event->group_leader->hw.hrtimer.is_soft	0-1
HOST_DATA	1	event->group_leader->hw.hrtimer.node.expires	s64min-s64max
HOST_DATA	1	event->group_leader->hw.hrtimer.node.node.node.__rb_parent_color	0-u64max
HOST_DATA	1	event->group_leader->hw.idx	s32min-s32max
HOST_DATA	1	event->group_leader->hw.info.address	0-u64max
HOST_DATA	1	event->group_leader->hw.info.len	0-255
HOST_DATA	1	event->group_leader->hw.info.mask	0-u64max
HOST_DATA	1	event->group_leader->hw.info.type	0-255
HOST_DATA	1	event->group_leader->hw.iommu_bank	0-255
HOST_DATA	1	event->group_leader->hw.iommu_cntr	0-255
HOST_DATA	1	event->group_leader->hw.last_cpu	s32min-s32max
HOST_DATA	1	event->group_leader->hw.last_period	0-u64max
HOST_DATA	1	event->group_leader->hw.last_tag	0-u64max
HOST_DATA	1	event->group_leader->hw.padding	0-u16max
HOST_DATA	1	event->group_leader->hw.period_left.a.a.counter	s64min-s64max
HOST_DATA	1	event->group_leader->hw.prev_count.a.a.counter	s64min-s64max
HOST_DATA	1	event->group_leader->hw.ptsc	0-u64max
HOST_DATA	1	event->group_leader->hw.pwr_acc	0-u64max
HOST_DATA	1	event->group_leader->hw.saved_metric	0-u64max
HOST_DATA	1	event->group_leader->hw.saved_slots	0-u64max
HOST_DATA	1	event->hw->addr_filters_gen	0-u64max
HOST_DATA	1	event->hw->freq_count_stamp	0-u64max
HOST_DATA	1	event->hw->freq_time_stamp	0-u64max
HOST_DATA	1	event->hw->interrupts	0-u64max
HOST_DATA	1	event->hw->interrupts_seq	0-u64max
HOST_DATA	1	event->hw->sample_period	0-u64max
HOST_DATA	1	event->hw->state	s32min-s32max
LOCK2		&parent_event->child_mutex
LOCK2		rcu_read
HALF_LOCKED2		&ctx->mutex
HALF_LOCKED2		&tsk->signal->exec_update_lock
HALF_LOCKED2		_T->lock
TYPE_LOCK		(struct perf_event)->child_mutex

kernel/events/core.c perf_output_sample() -> perf_output_read()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	3601165687258877952,7917383931946713088
PARAM_VALUE	0	handle->event	4096-ptr_max
PARAM_VALUE	0	handle->flags	0
PARAM_VALUE	0	handle->rb	4096-ptr_max
PARAM_VALUE	1	event	4096-ptr_max
CAPPED_DATA	1	event	1
DATA_SOURCE	0	handle	$0
DATA_SOURCE	1	event	$3
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	event->aux_event->hw->addr_filters_gen	0-u64max
HOST_DATA	1	event->aux_event->hw->freq_count_stamp	0-u64max
HOST_DATA	1	event->aux_event->hw->freq_time_stamp	0-u64max
HOST_DATA	1	event->aux_event->hw->interrupts	0-u64max
HOST_DATA	1	event->aux_event->hw->interrupts_seq	0-u64max
HOST_DATA	1	event->aux_event->hw->sample_period	0-u64max
HOST_DATA	1	event->aux_event->hw->state	s32min-s32max
HOST_DATA	1	event->aux_event->hw.aux_config	0-u64max
HOST_DATA	1	event->aux_event->hw.aux_paused	0
HOST_DATA	1	event->aux_event->hw.branch_reg.alloc	s32min-s32max
HOST_DATA	1	event->aux_event->hw.branch_reg.config	0-u64max
HOST_DATA	1	event->aux_event->hw.branch_reg.idx	s32min-s32max
HOST_DATA	1	event->aux_event->hw.branch_reg.reg	0-u32max
HOST_DATA	1	event->aux_event->hw.conf	0-u64max
HOST_DATA	1	event->aux_event->hw.conf1	0-u64max
HOST_DATA	1	event->aux_event->hw.config	0-u64max
HOST_DATA	1	event->aux_event->hw.config1	0-u64max
HOST_DATA	1	event->aux_event->hw.config_base	0-u64max
HOST_DATA	1	event->aux_event->hw.dyn_constraint	0-u64max
HOST_DATA	1	event->aux_event->hw.event_base	0-u64max
HOST_DATA	1	event->aux_event->hw.event_base_rdpmc	s32min-s32max
HOST_DATA	1	event->aux_event->hw.extra_reg.alloc	s32min-s32max
HOST_DATA	1	event->aux_event->hw.extra_reg.config	0-u64max
HOST_DATA	1	event->aux_event->hw.extra_reg.idx	s32min-s32max
HOST_DATA	1	event->aux_event->hw.extra_reg.reg	0-u32max
HOST_DATA	1	event->aux_event->hw.flags	s32min-s32max
HOST_DATA	1	event->aux_event->hw.hrtimer._softexpires	s64min-s64max
HOST_DATA	1	event->aux_event->hw.hrtimer.is_hard	0-1
HOST_DATA	1	event->aux_event->hw.hrtimer.is_lazy	0-1
HOST_DATA	1	event->aux_event->hw.hrtimer.is_queued	0
HOST_DATA	1	event->aux_event->hw.hrtimer.is_rel	0-1
HOST_DATA	1	event->aux_event->hw.hrtimer.is_soft	0-1
HOST_DATA	1	event->aux_event->hw.hrtimer.node.expires	s64min-s64max
HOST_DATA	1	event->aux_event->hw.hrtimer.node.node.node.__rb_parent_color	1
HOST_DATA	1	event->aux_event->hw.idx	s32min-s32max
HOST_DATA	1	event->aux_event->hw.info.address	0-u64max
HOST_DATA	1	event->aux_event->hw.info.len	0-255
HOST_DATA	1	event->aux_event->hw.info.mask	0-u64max
HOST_DATA	1	event->aux_event->hw.info.type	0-255
HOST_DATA	1	event->aux_event->hw.iommu_bank	0-255
HOST_DATA	1	event->aux_event->hw.iommu_cntr	0-255
HOST_DATA	1	event->aux_event->hw.last_cpu	s32min-s32max
HOST_DATA	1	event->aux_event->hw.last_period	0-u64max
HOST_DATA	1	event->aux_event->hw.last_tag	0-u64max
HOST_DATA	1	event->aux_event->hw.padding	0-u16max
HOST_DATA	1	event->aux_event->hw.period_left.a.a.counter	s64min-s64max
HOST_DATA	1	event->aux_event->hw.prev_count.a.a.counter	s64min-s64max
HOST_DATA	1	event->aux_event->hw.ptsc	0-u64max
HOST_DATA	1	event->aux_event->hw.pwr_acc	0-u64max
HOST_DATA	1	event->aux_event->hw.saved_metric	0-u64max
HOST_DATA	1	event->aux_event->hw.saved_slots	0-u64max
HOST_DATA	1	event->hw->addr_filters_gen	0-u64max
HOST_DATA	1	event->hw->freq_count_stamp	0-u64max
HOST_DATA	1	event->hw->freq_time_stamp	0-u64max
HOST_DATA	1	event->hw->interrupts	0-u64max
HOST_DATA	1	event->hw->interrupts_seq	0-u64max
HOST_DATA	1	event->hw->sample_period	0-u64max
HOST_DATA	1	event->hw->state	s32min-s32max
LOCK2		rcu_read