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| author | Takashi Iwai <tiwai@suse.de> | 2022-07-04 14:14:04 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-07-04 14:14:04 +0200 |
| commit | dd84cfff3cc3b79c9d616f85bd1178df135cbd1a (patch) | |
| tree | cd02e30a78211bed4f1270877b705a079d4bd364 /kernel/panic.c | |
| parent | 2307a0e1ca0b5c1337b37ac6302f96e017ebac3c (diff) | |
| parent | 980555e95f7cabdc9c80a07107622b097ba23703 (diff) | |
Merge tag 'asoc-fix-v5.19-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v5.19
A collection of fixes for v5.19, quite large but nothing major - a good
chunk of it is more stuff that was identified by mixer-test regarding
event generation.
Diffstat (limited to 'kernel/panic.c')
| -rw-r--r-- | kernel/panic.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index eb4dfb932c85..a3c758dba15a 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -43,12 +43,14 @@ * Should we dump all CPUs backtraces in an oops event? * Defaults to 0, can be changed via sysctl. */ -unsigned int __read_mostly sysctl_oops_all_cpu_backtrace; +static unsigned int __read_mostly sysctl_oops_all_cpu_backtrace; +#else +#define sysctl_oops_all_cpu_backtrace 0 #endif /* CONFIG_SMP */ int panic_on_oops = CONFIG_PANIC_ON_OOPS_VALUE; static unsigned long tainted_mask = - IS_ENABLED(CONFIG_GCC_PLUGIN_RANDSTRUCT) ? (1 << TAINT_RANDSTRUCT) : 0; + IS_ENABLED(CONFIG_RANDSTRUCT) ? (1 << TAINT_RANDSTRUCT) : 0; static int pause_on_oops; static int pause_on_oops_flag; static DEFINE_SPINLOCK(pause_on_oops_lock); @@ -73,6 +75,28 @@ ATOMIC_NOTIFIER_HEAD(panic_notifier_list); EXPORT_SYMBOL(panic_notifier_list); +#if defined(CONFIG_SMP) && defined(CONFIG_SYSCTL) +static struct ctl_table kern_panic_table[] = { + { + .procname = "oops_all_cpu_backtrace", + .data = &sysctl_oops_all_cpu_backtrace, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, + }, + { } +}; + +static __init int kernel_panic_sysctls_init(void) +{ + register_sysctl_init("kernel", kern_panic_table); + return 0; +} +late_initcall(kernel_panic_sysctls_init); +#endif + static long no_blink(int state) { return 0; @@ -579,6 +603,8 @@ void __warn(const char *file, int line, void *caller, unsigned taint, { disable_trace_on_warning(); + printk_prefer_direct_enter(); + if (file) pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pS\n", raw_smp_processor_id(), current->pid, file, line, @@ -608,6 +634,8 @@ void __warn(const char *file, int line, void *caller, unsigned taint, /* Just a warning, don't kill lockdep. */ add_taint(taint, LOCKDEP_STILL_OK); + + printk_prefer_direct_exit(); } #ifndef __WARN_FLAGS |