Sometimes e.g. with crashme the compat layer warnings can be noisy. Add a way to turn them off by gating all output through compat_printk that checks a global sysctl. The default is not changed.
Showing the changes to kernel/sysctl.c (1 of 5 files). Show all
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| @@ -73,6 +73,7 @@ extern int printk_ratelimit_burst; · 72 unmodified lines | |||
| 73 | extern int pid_max_min, pid_max_max; | 73 | extern int pid_max_min, pid_max_max; |
| 74 | extern int sysctl_drop_caches; | 74 | extern int sysctl_drop_caches; |
| 75 | extern int percpu_pagelist_fraction; | 75 | extern int percpu_pagelist_fraction; |
| 76 | extern int compat_log; | ||
| 76 | 77 | ||
| 77 | #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) | 78 | #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) |
| 78 | int unknown_nmi_panic; | 79 | int unknown_nmi_panic; |
| @@ -676,6 +677,16 @@ static ctl_table kern_table[] = { · 597 unmodified lines | |||
| 676 | .mode = 0644, | 677 | .mode = 0644, |
| 677 | .proc_handler = &proc_dointvec, | 678 | .proc_handler = &proc_dointvec, |
| 678 | }, | 679 | }, |
| 680 | #endif | ||
| 681 | #ifdef CONFIG_COMPAT | ||
| 682 | { | ||
| 683 | .ctl_name = KERN_COMPAT_LOG, | ||
| 684 | .procname = "compat-log", | ||
| 685 | .data = &compat_log, | ||
| 686 | .maxlen = sizeof (int), | ||
| 687 | .mode = 0644, | ||
| 688 | .proc_handler = &proc_dointvec, | ||
| 689 | }, | ||
| 679 | #endif | 690 | #endif |
| 680 | { .ctl_name = 0 } | 691 | { .ctl_name = 0 } |
| 681 | }; | 692 | }; |