Linus, the latest prandom series I sent you changes __this_cpu_read() to this_cpu_read() since LKP returned the following trace on i386:
[ 9.061912] dump_stack+0x54/0x6e [ 9.061912] check_preemption_disabled+0xb1/0xc0 [ 9.061912] __this_cpu_preempt_check+0xf/0x11 [ 9.065516] __igt_reserve+0x91/0x580 [ 9.065516] igt_reserve+0x5b/0xc0 [ 9.065516] test_drm_mm_init+0x78/0xa9 I got another report that it breaks on ARC (trivial fix consists in adding irqflags.h in prandom.h) but that made me wonder, we're using this to access and update the net_rand_noise variable only, wouldn't it be better to use the faster raw_cpu_read()/raw_cpu_write() there, considering we don't care about concurrent accesses since they simply add even more impredictability to the noise ? If so, I'll update this branch and will send you another PR. Thanks, Willy
