summaryrefslogtreecommitdiffstats
path: root/kernel/printk/internal.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /kernel/printk/internal.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'kernel/printk/internal.h')
-rw-r--r--kernel/printk/internal.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/kernel/printk/internal.h b/kernel/printk/internal.h
new file mode 100644
index 000000000..d947ca6c8
--- /dev/null
+++ b/kernel/printk/internal.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * internal.h - printk internal definitions
+ */
+#include <linux/percpu.h>
+
+#if defined(CONFIG_PRINTK) && defined(CONFIG_SYSCTL)
+void __init printk_sysctl_init(void);
+int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos);
+#else
+#define printk_sysctl_init() do { } while (0)
+#endif
+
+#ifdef CONFIG_PRINTK
+
+/* Flags for a single printk record. */
+enum printk_info_flags {
+ LOG_NEWLINE = 2, /* text ended with a newline */
+ LOG_CONT = 8, /* text is a fragment of a continuation line */
+};
+
+__printf(4, 0)
+int vprintk_store(int facility, int level,
+ const struct dev_printk_info *dev_info,
+ const char *fmt, va_list args);
+
+__printf(1, 0) int vprintk_default(const char *fmt, va_list args);
+__printf(1, 0) int vprintk_deferred(const char *fmt, va_list args);
+
+bool printk_percpu_data_ready(void);
+
+#define printk_safe_enter_irqsave(flags) \
+ do { \
+ local_irq_save(flags); \
+ __printk_safe_enter(); \
+ } while (0)
+
+#define printk_safe_exit_irqrestore(flags) \
+ do { \
+ __printk_safe_exit(); \
+ local_irq_restore(flags); \
+ } while (0)
+
+void defer_console_output(void);
+
+u16 printk_parse_prefix(const char *text, int *level,
+ enum printk_info_flags *flags);
+#else
+
+/*
+ * In !PRINTK builds we still export console_sem
+ * semaphore and some of console functions (console_unlock()/etc.), so
+ * printk-safe must preserve the existing local IRQ guarantees.
+ */
+#define printk_safe_enter_irqsave(flags) local_irq_save(flags)
+#define printk_safe_exit_irqrestore(flags) local_irq_restore(flags)
+
+static inline bool printk_percpu_data_ready(void) { return false; }
+#endif /* CONFIG_PRINTK */