include/linux/seqlock.h

33  * via seqcount_t under KCSAN: upon beginning a seq-reader critical section,
46  * Write side critical sections must be serialized and non-preemptible.
125  * that the write side critical section is properly serialized.
136  * For PREEMPT_RT, seqcount_LOCKNAME_t write side critical sections cannot
146  * until the end of its writer serialization lock critical section.
165  * that the write side critical section is properly serialized.
322  * protected in this critical section.
324  * Use carefully, only in critical code, and comment how the barrier is
355  * read_seqcount_begin() - begin a seqcount_t read critical section
370  * raw_read_seqcount opens a read critical section of the given
387  * raw_seqcount_begin() - begin a seqcount_t read critical section w/o
391  * raw_seqcount_begin opens a read critical section of the given
394  * will fail the read_seqcount_retry() at the end of the read critical
420  * protected in this critical section.
422  * Use carefully, only in critical code, and comment how the barrier is
437  * read_seqcount_retry() - end a seqcount_t read critical section
441  * read_seqcount_retry closes the read critical section of given
442  * seqcount_t.  If the critical section was invalid, it must be ignored
519  * write_seqcount_begin() - start a seqcount_t write side critical section
522  * write_seqcount_begin opens a write side critical section of the given
525  * Context: seqcount_t write side critical sections must be serialized and
545  * write_seqcount_end() - end a seqcount_t write side critical section
575  * meant to propagate to the reader critical section. This is necessary because
577  * critical section that would ensure readers are aware of ongoing writes::
641  * typically NMIs, to safely interrupt the write side critical section.
831  * read_seqbegin() - start a seqlock_t read side critical section
850  * read_seqretry closes the read side critical section of given seqlock_t.
851  * If the critical section was invalid, it must be ignored (and typically
860 	 * completing read critical section.  in read_seqretry()
874  * write_seqlock() - start a seqlock_t write side critical section
877  * write_seqlock opens a write side critical section for the given
882  * Context: if the seqlock_t read section, or other write side critical
893  * write_sequnlock() - end a seqlock_t write side critical section
897  * critical section of given seqlock_t.
923  * softirqs-disabled, seqlock_t write side critical section opened with
1000  * read_seqlock_excl opens a seqlock_t locking reader critical section.  A
1018  * read_sequnlock_excl() - end a seqlock_t locking reader critical section
1164  * done_seqretry finishes the seqlock_t read side critical section started