rcu_read_lock_bh_held man page on OpenSuSE

rcu_read_lock_bh_held man page on OpenSuSE

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RCU_READ_LOCK_BH_HEL(9)		 Driver Basics	       RCU_READ_LOCK_BH_HEL(9)

NAME
       rcu_read_lock_bh_held - might we be in RCU-bh read-side critical
       section?

SYNOPSIS
       int rcu_read_lock_bh_held(void);

ARGUMENTS
       void
	   no arguments

DESCRIPTION
       Check for bottom half being disabled, which covers both the
       CONFIG_PROVE_RCU and not cases. Note that if someone uses
       rcu_read_lock_bh, but then later enables BH, lockdep (if enabled) will
       show the situation. This is useful for debug checks in functions that
       require that they be called within an RCU read-side critical section.

       Check debug_lockdep_rcu_enabled to prevent false positives during boot.

       Note that rcu_read_lock is disallowed if the CPU is either idle or
       offline from an RCU perspective, so check for those as well.

COPYRIGHT
Kernel Hackers Manual 3.11	 November 2013	       RCU_READ_LOCK_BH_HEL(9)

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