Yan Zhai 3ffe591b27 rcu: add a helper to report consolidated flavor QS ... [ Upstream commit 1a77557d48 ] When under heavy load, network processing can run CPU-bound for many tens of seconds. Even in preemptible kernels (non-RT kernel), this can block RCU Tasks grace periods, which can cause trace-event removal to take more than a minute, which is unacceptably long. This commit therefore creates a new helper function that passes through both RCU and RCU-Tasks quiescent states every 100 milliseconds. This hard-coded value suffices for current workloads. Suggested-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Jesper Dangaard Brouer <hawk@kernel.org> Signed-off-by: Yan Zhai <yan@cloudflare.com> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Jesper Dangaard Brouer <hawk@kernel.org> Link: https://lore.kernel.org/r/90431d46ee112d2b0af04dbfe936faaca11810a5.1710877680.git.yan@cloudflare.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: 00bf631224 ("bpf: report RCU QS in cpumap kthread") Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-03-26 18:22:25 -04:00
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acpi	…
asm-generic	asm-generic: qspinlock: fix queued_spin_value_unlocked() implementation	2023-12-20 15:41:22 +01:00
clocksource	…
crypto	crypto: af_alg - Disallow multiple in-flight AIO requests	2024-01-25 14:34:23 -08:00
drm	drm: Don't treat 0 as -1 in drm_fixp2int_ceil	2024-03-26 18:22:19 -04:00
dt-bindings	…
keys	…
kvm	…
linux	rcu: add a helper to report consolidated flavor QS	2024-03-26 18:22:25 -04:00
math-emu	…
media	media: rename VFL_TYPE_GRABBER to _VIDEO	2024-03-26 18:22:22 -04:00
misc	…
net	tcp: factor out __tcp_close() helper	2024-03-01 13:13:34 +01:00
pcmcia	…
ras	…
rdma	…
scsi	scsi: core: Introduce the scsi_cmd_to_rq() function	2023-12-08 08:44:28 +01:00
soc	firmware: raspberrypi: Introduce devm_rpi_firmware_get()	2023-05-17 11:35:52 +02:00
sound	ALSA: pcm: Set per-card upper limit of PCM buffer allocations	2023-08-30 16:27:22 +02:00
target	…
trace	neighbor: tracing: Move pin6 inside CONFIG_IPV6=y section	2023-10-25 11:53:22 +02:00
uapi	y2038: rusage: use __kernel_old_timeval	2024-03-15 10:48:18 -04:00
vdso	…
video	…
xen	dma-mapping: drop the dev argument to arch_sync_dma_for_*	2023-04-05 11:16:43 +02:00