Stefan Wahren b58a36008b hwrng: bcm2835 - Fix hwrng throughput regression ... The last RCU stall fix caused a massive throughput regression of the hwrng on Raspberry Pi 0 - 3. hwrng_msleep doesn't sleep precisely enough and usleep_range doesn't allow scheduling. So try to restore the best possible throughput by introducing hwrng_yield which interruptable sleeps for one jiffy. Some performance measurements on Raspberry Pi 3B+ (arm64/defconfig): sudo dd if=/dev/hwrng of=/dev/null count=1 bs=10000 cpu_relax ~138025 Bytes / sec hwrng_msleep(1000) ~13 Bytes / sec hwrng_yield ~2510 Bytes / sec Fixes: 96cb9d0554 ("hwrng: bcm2835 - use hwrng_msleep() instead of cpu_relax()") Link: https://lore.kernel.org/linux-arm-kernel/bc97ece5-44a3-4c4e-77da-2db3eb66b128@gmx.net/ Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>		2023-09-15 18:29:45 +08:00
..
acpi	Merge branches 'acpi-scan', 'acpi-tad', 'acpi-extlog' and 'acpi-misc'	2023-08-25 20:49:52 +02:00
asm-generic	ata changes for 6.6	2023-09-05 12:37:28 -07:00
clocksource
crypto	This update includes the following changes:	2023-08-29 11:23:29 -07:00
drm	drm for 6.6-rc1	2023-08-30 13:34:34 -07:00
dt-bindings	IOMMU Updates for Linux v6.6	2023-09-01 16:54:25 -07:00
keys	integrity: PowerVM support for loading third party code signing keys	2023-08-17 20:12:35 +00:00
kunit	- An extensive rework of kexec and crash Kconfig from Eric DeVolder	2023-08-29 14:53:51 -07:00
kvm	KVM: arm64: pmu: Guard PMU emulation definitions with CONFIG_KVM	2023-08-23 20:01:03 +01:00
linux	hwrng: bcm2835 - Fix hwrng throughput regression	2023-09-15 18:29:45 +08:00
math-emu
media	media updates for v6.6-rc1	2023-09-01 12:21:32 -07:00
memory
misc
net	Including fixes from netfilter and bpf.	2023-09-07 18:33:07 -07:00
pcmcia
ras
rdma	RDMA Remove unused function declarations	2023-08-13 10:32:35 +03:00
rv	rv: Set variable 'da_mon_##name' to static	2023-09-01 21:00:00 -04:00
scsi	SCSI misc on 20230909	2023-09-09 12:01:33 -07:00
soc	IOMMU Updates for Linux v6.6	2023-09-01 16:54:25 -07:00
sound	ASoC: Name iov_iter argument as iterator instead of buffer	2023-09-01 15:38:49 +02:00
target	scsi: target: iscsi: Remove the unused netif_timeout attribute	2023-07-11 12:33:32 -04:00
trace	tracing: Replace strlcpy with strscpy in trace/events/task.h	2023-09-01 21:00:00 -04:00
uapi	RISC-V Patches for the 6.6 Merge Window, Part 2 (try 2)	2023-09-09 14:25:11 -07:00
ufs	Merge branch 'fixes' into misc	2023-09-02 08:25:19 +01:00
vdso
video	fbdev: kyro: Remove unused declarations	2023-08-15 23:39:33 +02:00
xen	dma-maping updates for Linux 6.6	2023-08-29 20:32:10 -07:00