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Bin Lai 92e026f5b5 sli: fix rq_clock warning caused by sli 
In order to reduce the critical section, we invoke sli_update_tick()
to do sli statistics after release the rq lock. But there is a race
condition that could led the rq_clock warning.

Warning generates like following:
CPU0				CPU1
rq_lock()
update_rq_clock()
rq_unlock()
				rq_lock()
sli_update_tick()		load balance

Although, CPU0 had updated the rq_clock(). But CPU1 may concurrently
do the load balance and acquire CPU0's rq lock, and the CPU0's
clock_update_flags would be cleared. It means that caller should
update the rq clock before actually use it. Unfortunately, CPU0
cann't observed it. So the warning was produced by sli when it
invoke rq_clock().

Therefore, we must move the sli_check_longsys() in the front of
rq_unlock().

Signed-off-by: Bin Lai <robinlai@tencent.com>
 		2022-07-05 15:19:38 +08:00
Documentation docs/bpf: Add BPF ring buffer design notes 2022-06-21 10:27:16 +08:00
LICENSES Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
arch bpf: Fix trampoline generation for fmod_ret programs 2022-06-21 10:27:07 +08:00
block block: dont count passthrough req as inflight 2022-06-01 10:11:12 +08:00
certs certs: Fix blacklist flag type confusion 2021-04-12 12:52:25 +08:00
crypto crypto: rng - fix crypto_rng_reset() refcounting when !CRYPTO_STATS 2021-05-20 16:07:34 +08:00
drivers bpf: Implement CAP_BPF 2022-06-21 10:27:12 +08:00
fs bpf: Refactor to provide aux info to bpf_iter_init_seq_priv_t 2022-06-21 10:27:14 +08:00
include sli: fix rq_clock warning caused by sli 2022-07-05 15:19:38 +08:00
init Merge pull request #223 from xmmgithub/tk4/bpf 2022-06-22 16:41:32 +08:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2021-03-16 16:27:51 +08:00
kernel sli: fix rq_clock warning caused by sli 2022-07-05 15:19:38 +08:00
lib libfdt: include fdt_addresses.c 2022-06-06 14:14:45 +08:00
mm Merge pull request #223 from xmmgithub/tk4/bpf 2022-06-22 16:41:32 +08:00
net tcp_ipv6: set the drop_reason in the right place 2022-06-27 19:27:03 +08:00
package config: auto generate kasan config 2022-06-29 15:30:41 +08:00
samples kfifo: fix ternary sign extension bugs 2021-05-20 16:08:01 +08:00
scripts bpf: fix selftest case compile error for bpf_timer 2022-06-21 10:27:21 +08:00
security bpf: Implement bpf_local_storage for inodes 2022-06-21 10:27:15 +08:00
sound ALSA: usb: midi: don't return -ENOMEM when usb_urb_ep_type_check fails 2021-05-20 16:07:59 +08:00
tools selftests/bpf: check packet range again in bpf_sk_assign_test() 2022-06-21 14:20:01 +08:00
usr Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
virt KVM: Stop looking for coalesced MMIO zones if the bus is destroyed 2021-05-20 16:07:44 +08:00
.clang-format Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.cocciconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.get_maintainer.ignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitattributes Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
COPYING Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
CREDITS Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kbuild Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
MAINTAINERS bpf: Introduce BPF_PROG_TYPE_LSM 2022-06-21 10:27:08 +08:00
Makefile bpf: Resolve BTF IDs in vmlinux image 2022-06-21 10:27:14 +08:00
README Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
README.md Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
backport_remove_lists.txt Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tools_key.pub Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00

README.md

Tencent Linux Kernel 4.0