linux/include
Tanner Love a358f40600 once: implement DO_ONCE_LITE for non-fast-path "do once" functionality
Certain uses of "do once" functionality reside outside of fast path,
and so do not require jump label patching via static keys, making
existing DO_ONCE undesirable in such cases.

Replace uses of __section(".data.once") with DO_ONCE_LITE(_IF)?

This patch changes the return values of xfs_printk_once, printk_once,
and printk_deferred_once. Before, they returned whether the print was
performed, but now, they always return true. This is okay because the
return values of the following macros are entirely ignored throughout
the kernel:
- xfs_printk_once
- xfs_warn_once
- xfs_notice_once
- xfs_info_once
- printk_once
- pr_emerg_once
- pr_alert_once
- pr_crit_once
- pr_err_once
- pr_warn_once
- pr_notice_once
- pr_info_once
- pr_devel_once
- pr_debug_once
- printk_deferred_once
- orc_warn

Changes
v3:
  - Expand commit message to explain why changing return values of
    xfs_printk_once, printk_once, printk_deferred_once is benign
v2:
  - Fix i386 build warnings

Signed-off-by: Tanner Love <tannerlove@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-28 15:54:57 -07:00
..
acpi Merge branches 'acpi-cppc', 'acpi-video' and 'acpi-utils' 2021-04-26 17:04:27 +02:00
asm-generic once: implement DO_ONCE_LITE for non-fast-path "do once" functionality 2021-06-28 15:54:57 -07:00
clocksource ARM: platform support for Apple M1 2021-04-26 12:30:36 -07:00
crypto
drm
dt-bindings dt-bindings: connector: Add PD rev 2.0 VDO definition 2021-06-04 11:43:01 +02:00
keys integrity-v5.13 2021-05-01 15:32:18 -07:00
kunit
kvm Merge branch 'kvm-arm64/kill_oprofile_dependency' into kvmarm-master/next 2021-04-22 13:41:49 +01:00
linux once: implement DO_ONCE_LITE for non-fast-path "do once" functionality 2021-06-28 15:54:57 -07:00
math-emu
media media updates for v5.13-rc1 2021-04-28 09:24:36 -07:00
memory
misc
net bluetooth-next pull request for net-next: 2021-06-28 15:35:50 -07:00
pcmcia
ras
rdma RDMA/restrack: Add support to get resource tracking for SRQ 2021-04-22 10:30:27 -03:00
scsi SCSI misc on 20210428 2021-04-28 17:22:10 -07:00
soc Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
sound ASoC: Fixes for v5.13 2021-05-25 08:58:01 +02:00
target
trace mptcp: dump csum fields in mptcp_dump_mpext 2021-06-18 11:40:11 -07:00
uapi Lots of changes: 2021-06-28 13:06:12 -07:00
vdso
video
xen xen/arm: move xen_swiotlb_detect to arm/swiotlb-xen.h 2021-05-14 15:52:05 +02:00