diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/printk/printk.c | 108 |
1 files changed, 5 insertions, 103 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 50b2703d6d6a..b3c454b733da 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -1583,46 +1583,25 @@ static inline void printk_delay(void) static struct cont { char buf[LOG_LINE_MAX]; size_t len; /* length == 0 means unused buffer */ - size_t cons; /* bytes written to console */ struct task_struct *owner; /* task of first print*/ u64 ts_nsec; /* time of first print */ u8 level; /* log level of first message */ u8 facility; /* log facility of first message */ enum log_flags flags; /* prefix, newline flags */ - bool flushed:1; /* buffer sealed and committed */ } cont; static void cont_flush(void) { - if (cont.flushed) - return; if (cont.len == 0) return; - if (cont.cons) { - /* - * If a fragment of this line was directly flushed to the - * console; wait for the console to pick up the rest of the - * line. LOG_NOCONS suppresses a duplicated output. - */ - log_store(cont.facility, cont.level, cont.flags | LOG_NOCONS, - cont.ts_nsec, NULL, 0, cont.buf, cont.len); - cont.flushed = true; - } else { - /* - * If no fragment of this line ever reached the console, - * just submit it to the store and free the buffer. - */ - log_store(cont.facility, cont.level, cont.flags, 0, - NULL, 0, cont.buf, cont.len); - cont.len = 0; - } + + log_store(cont.facility, cont.level, cont.flags, cont.ts_nsec, + NULL, 0, cont.buf, cont.len); + cont.len = 0; } static bool cont_add(int facility, int level, enum log_flags flags, const char *text, size_t len) { - if (cont.len && cont.flushed) - return false; - /* * If ext consoles are present, flush and skip in-kernel * continuation. See nr_ext_console_drivers definition. Also, if @@ -1639,8 +1618,6 @@ static bool cont_add(int facility, int level, enum log_flags flags, const char * cont.owner = current; cont.ts_nsec = local_clock(); cont.flags = flags; - cont.cons = 0; - cont.flushed = false; } memcpy(cont.buf + cont.len, text, len); @@ -1659,34 +1636,6 @@ static bool cont_add(int facility, int level, enum log_flags flags, const char * return true; } -static size_t cont_print_text(char *text, size_t size) -{ - size_t textlen = 0; - size_t len; - - if (cont.cons == 0) { - textlen += print_time(cont.ts_nsec, text); - size -= textlen; - } - - len = cont.len - cont.cons; - if (len > 0) { - if (len+1 > size) - len = size-1; - memcpy(text + textlen, cont.buf + cont.cons, len); - textlen += len; - cont.cons = cont.len; - } - - if (cont.flushed) { - if (cont.flags & LOG_NEWLINE) - text[textlen++] = '\n'; - /* got everything, release buffer */ - cont.len = 0; - } - return textlen; -} - static size_t log_output(int facility, int level, enum log_flags lflags, const char *dict, size_t dictlen, char *text, size_t text_len) { /* @@ -1957,7 +1906,6 @@ static void call_console_drivers(int level, const char *text, size_t len) {} static size_t msg_print_text(const struct printk_log *msg, bool syslog, char *buf, size_t size) { return 0; } -static size_t cont_print_text(char *text, size_t size) { return 0; } static bool suppress_message_printing(int level) { return false; } /* Still needs to be defined for users */ @@ -2221,42 +2169,6 @@ static inline int can_use_console(void) return cpu_online(raw_smp_processor_id()) || have_callable_console(); } -static void console_cont_flush(char *text, size_t size) -{ - unsigned long flags; - size_t len; - - raw_spin_lock_irqsave(&logbuf_lock, flags); - - if (!cont.len) - goto out; - - if (suppress_message_printing(cont.level)) { - cont.cons = cont.len; - if (cont.flushed) - cont.len = 0; - goto out; - } - - /* - * We still queue earlier records, likely because the console was - * busy. The earlier ones need to be printed before this one, we - * did not flush any fragment so far, so just let it queue up. - */ - if (console_seq < log_next_seq && !cont.cons) - goto out; - - len = cont_print_text(text, size); - raw_spin_unlock(&logbuf_lock); - stop_critical_timings(); - call_console_drivers(cont.level, NULL, 0, text, len); - start_critical_timings(); - local_irq_restore(flags); - return; -out: - raw_spin_unlock_irqrestore(&logbuf_lock, flags); -} - /** * console_unlock - unlock the console system * @@ -2310,9 +2222,6 @@ again: return; } - /* flush buffered message fragment immediately to console */ - console_cont_flush(text, sizeof(text)); - for (;;) { struct printk_log *msg; size_t ext_len = 0; @@ -2341,8 +2250,7 @@ skip: msg = log_from_idx(console_idx); level = msg->level; - if ((msg->flags & LOG_NOCONS) || - suppress_message_printing(level)) { + if (suppress_message_printing(level)) { /* * Skip record we have buffered and already printed * directly to the console when we received it, and @@ -2350,12 +2258,6 @@ skip: */ console_idx = log_next(console_idx); console_seq++; - /* - * We will get here again when we register a new - * CON_PRINTBUFFER console. Clear the flag so we - * will properly dump everything later. - */ - msg->flags &= ~LOG_NOCONS; goto skip; } |