Messages in this thread | | | From | Paul Menzel <> | Subject | smpboot: CPU numbers printed as warning | Date | Mon, 15 Feb 2021 20:22:34 +0100 |
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Dear Linux folks,
Using Linux 5.10.13 (and before), looking at the Linux kernel warnings, the CPU numbers show up. For example with 12 cpus/threads:
``` $ sudo dmesg --level=warn [ 0.216103] #2 [ 0.220105] #3 [ 0.224103] #4 [ 0.228104] #5 [ 0.232110] #6 [ 0.236101] #7 [ 0.240102] #8 [ 0.244102] #9 [ 0.248100] #10 [ 0.252098] #11 ```
If I am not mistaken, this is from `announce_cpu()` in `arch/x86/kernel/smpboot.c`, and the `pr_cont()` in their “forgets” the log level it belongs to, maybe because of SMP and other messages are printed in between.
``` if (system_state < SYSTEM_RUNNING) { if (node != current_node) { if (current_node > (-1)) pr_cont("\n"); current_node = node;
printk(KERN_INFO ".... node %*s#%d, CPUs: ", node_width - num_digits(node), " ", node); }
/* Add padding for the BSP */ if (cpu == 1) pr_cont("%*s", width + 1, " ");
pr_cont("%*s#%d", width - num_digits(cpu), " ", cpu);
} else pr_info("Booting Node %d Processor %d APIC 0x%x\n", node, cpu, apicid); ```
Would using `pr_info()` instead be an acceptable fix?
Kind regards,
Paul
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