rb_reader_lock

Name:rb_reader_lock

Proto:static inline bool rb_reader_lock(struct ring_buffer_per_cpu *cpu_buffer)

Type:bool

Parameter:

Type	Parameter	Name
struct ring_buffer_per_cpu *	cpu_buffer

4039

If Value is more likely to compile time(!in_nmi()) Then

4040

raw_spin_lock( & serialize readers )

4041

Return true

4053

If Define the various spin_lock methods. Note we define these* regardless of whether CONFIG_SMP or CONFIG_PREEMPTION are set. The* various methods are defined as nops in the case they are not* required.( & serialize readers ) Then Return true

4057

atomic_inc( & record_disabled)

4058

Return false

**Caller**
Name	Describe
ring_buffer_peek	g_buffer_peek - peek at the next event to be read@buffer: The ring buffer to read@cpu: The cpu to peak at*@ts: The timestamp counter of this event
ring_buffer_consume	g_buffer_consume - return an event and consume it@buffer: The ring buffer to get the next event from@cpu: the cpu to read the buffer from@ts: a variable to store the timestamp (may be NULL)@lost_events: a variable to store if events were lost (may be
ring_buffer_empty	d_buffer_empty - is the ring buffer empty?*@buffer: The ring buffer to test
ring_buffer_empty_cpu	g_buffer_empty_cpu - is a cpu buffer of a ring buffer empty?@buffer: The ring buffer@cpu: The CPU buffer to test

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