freebsd-dev/sys/security
Mateusz Guzik 89744405e6 pipe: allow for lockless pipe_stat
pipes get stated all thet time and this avoidably contributed to contention.
The pipe lock is only held to accomodate MAC and to check the type.

Since normally there is no probe for pipe stat depessimize this by having the
flag.

The pipe_state field gets modified with locks held all the time and it's not
feasible to convert them to use atomic store. Move the type flag away to a
separate variable as a simple cleanup and to provide stable field to read.
Use short for both fields to avoid growing the struct.

While here short-circuit MAC for pipe_poll as well.
2020-11-19 06:30:25 +00:00
..
audit security: clean up empty lines in .c and .h files 2020-09-01 21:26:00 +00:00
mac pipe: allow for lockless pipe_stat 2020-11-19 06:30:25 +00:00
mac_biba security: clean up empty lines in .c and .h files 2020-09-01 21:26:00 +00:00
mac_bsdextended Deduplicate fsid comparisons 2020-05-21 01:55:35 +00:00
mac_ifoff Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mac_lomac security: clean up empty lines in .c and .h files 2020-09-01 21:26:00 +00:00
mac_mls security: clean up empty lines in .c and .h files 2020-09-01 21:26:00 +00:00
mac_none
mac_ntpd Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mac_partition Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mac_portacl Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mac_seeotheruids Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mac_stub security: clean up empty lines in .c and .h files 2020-09-01 21:26:00 +00:00
mac_test Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mac_veriexec security: clean up empty lines in .c and .h files 2020-09-01 21:26:00 +00:00
mac_veriexec_parser security: clean up empty lines in .c and .h files 2020-09-01 21:26:00 +00:00