mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 22:02:28 +00:00
96cb9d0554
Rather than busy looping, yield back to the scheduler and sleep for a bit in the event that there's no data. This should hopefully prevent the stalls that Mark reported: <6>[ 3.362859] Freeing initrd memory: 16196K <3>[ 23.160131] rcu: INFO: rcu_sched self-detected stall on CPU <3>[ 23.166057] rcu: 0-....: (2099 ticks this GP) idle=03b4/1/0x40000002 softirq=28/28 fqs=1050 <4>[ 23.174895] (t=2101 jiffies g=-1147 q=2353 ncpus=4) <4>[ 23.180203] CPU: 0 PID: 49 Comm: hwrng Not tainted 6.0.0 #1 <4>[ 23.186125] Hardware name: BCM2835 <4>[ 23.189837] PC is at bcm2835_rng_read+0x30/0x6c <4>[ 23.194709] LR is at hwrng_fillfn+0x71/0xf4 <4>[ 23.199218] pc : [<c07ccdc8>] lr : [<c07cb841>] psr: 40000033 <4>[ 23.205840] sp : f093df70 ip : 00000000 fp : 00000000 <4>[ 23.211404] r10: c3c7e800 r9 : 00000000 r8 : c17e6b20 <4>[ 23.216968] r7 : c17e6b64 r6 : c18b0a74 r5 : c07ccd99 r4 : c3f171c0 <4>[ 23.223855] r3 : 000fffff r2 : 00000040 r1 : c3c7e800 r0 : c3f171c0 <4>[ 23.230743] Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment none <4>[ 23.238426] Control: 50c5387d Table: 0020406a DAC: 00000051 <4>[ 23.244519] CPU: 0 PID: 49 Comm: hwrng Not tainted 6.0.0 #1 Link: https://lore.kernel.org/all/Y0QJLauamRnCDUef@sirena.org.uk/ Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|---|---|---|
| .. | ||
| amd-rng.c | ||
| arm_smccc_trng.c | ||
| atmel-rng.c | ||
| ba431-rng.c | ||
| bcm2835-rng.c | ||
| cavium-rng-vf.c | ||
| cavium-rng.c | ||
| cctrng.c | ||
| cctrng.h | ||
| cn10k-rng.c | ||
| core.c | ||
| exynos-trng.c | ||
| geode-rng.c | ||
| hisi-rng.c | ||
| imx-rngc.c | ||
| ingenic-rng.c | ||
| ingenic-trng.c | ||
| intel-rng.c | ||
| iproc-rng200.c | ||
| ixp4xx-rng.c | ||
| Kconfig | ||
| ks-sa-rng.c | ||
| Makefile | ||
| meson-rng.c | ||
| mpfs-rng.c | ||
| mtk-rng.c | ||
| mxc-rnga.c | ||
| n2-asm.S | ||
| n2-drv.c | ||
| n2rng.h | ||
| nomadik-rng.c | ||
| npcm-rng.c | ||
| octeon-rng.c | ||
| omap3-rom-rng.c | ||
| omap-rng.c | ||
| optee-rng.c | ||
| pasemi-rng.c | ||
| pic32-rng.c | ||
| powernv-rng.c | ||
| pseries-rng.c | ||
| s390-trng.c | ||
| st-rng.c | ||
| stm32-rng.c | ||
| timeriomem-rng.c | ||
| via-rng.c | ||
| virtio-rng.c | ||
| xgene-rng.c | ||
| xiphera-trng.c | ||