diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/printk/printk.c | 14 | ||||
| -rw-r--r-- | kernel/printk/printk_safe.c | 7 |
2 files changed, 7 insertions, 14 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 2f4af216bd6e..247808333ba4 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -1908,6 +1908,7 @@ asmlinkage int vprintk_emit(int facility, int level, preempt_enable(); } + wake_up_klogd(); return printed_len; } EXPORT_SYMBOL(vprintk_emit); @@ -2289,9 +2290,7 @@ void console_unlock(void) { static char ext_text[CONSOLE_EXT_LOG_MAX]; static char text[LOG_LINE_MAX + PREFIX_MAX]; - static u64 seen_seq; unsigned long flags; - bool wake_klogd = false; bool do_cond_resched, retry; if (console_suspended) { @@ -2335,11 +2334,6 @@ again: printk_safe_enter_irqsave(flags); raw_spin_lock(&logbuf_lock); - if (seen_seq != log_next_seq) { - wake_klogd = true; - seen_seq = log_next_seq; - } - if (console_seq < log_first_seq) { len = sprintf(text, "** %u printk messages dropped **\n", (unsigned)(log_first_seq - console_seq)); @@ -2397,7 +2391,7 @@ skip: if (console_lock_spinning_disable_and_check()) { printk_safe_exit_irqrestore(flags); - goto out; + return; } printk_safe_exit_irqrestore(flags); @@ -2429,10 +2423,6 @@ skip: if (retry && console_trylock()) goto again; - -out: - if (wake_klogd) - wake_up_klogd(); } EXPORT_SYMBOL(console_unlock); diff --git a/kernel/printk/printk_safe.c b/kernel/printk/printk_safe.c index 3e3c2004bb23..d7d091309054 100644 --- a/kernel/printk/printk_safe.c +++ b/kernel/printk/printk_safe.c @@ -82,6 +82,7 @@ static __printf(2, 0) int printk_safe_log_store(struct printk_safe_seq_buf *s, { int add; size_t len; + va_list ap; again: len = atomic_read(&s->len); @@ -100,7 +101,9 @@ again: if (!len) smp_rmb(); - add = vscnprintf(s->buffer + len, sizeof(s->buffer) - len, fmt, args); + va_copy(ap, args); + add = vscnprintf(s->buffer + len, sizeof(s->buffer) - len, fmt, ap); + va_end(ap); if (!add) return 0; @@ -278,7 +281,7 @@ void printk_safe_flush_on_panic(void) * Make sure that we could access the main ring buffer. * Do not risk a double release when more CPUs are up. */ - if (in_nmi() && raw_spin_is_locked(&logbuf_lock)) { + if (raw_spin_is_locked(&logbuf_lock)) { if (num_online_cpus() > 1) return; |