linux-kernel - [PATCH 1/2] printk: Add new pr_*_deferred

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Message-Id: <20210123233741.3614408-2-qais.yousef@arm.com>
Date:   Sat, 23 Jan 2021 23:37:40 +0000
From:   Qais Yousef <qais.yousef@....com>
To:     Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        John Ogness <john.ogness@...utronix.de>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, Qais Yousef <qais.yousef@....com>
Subject: [PATCH 1/2] printk: Add new pr_*_deferred_once() variants

To allow users in code where printk is not allowed.

Signed-off-by: Qais Yousef <qais.yousef@....com>
---
 include/linux/printk.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/linux/printk.h b/include/linux/printk.h
index fe7eb2351610..92c0978c7b44 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -480,21 +480,45 @@ extern int kptr_restrict;
 	printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
 /* no pr_cont_once, don't do that... */
 
+#define pr_emerg_deferred_once(fmt, ...)				\
+	printk_deferred_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_alert_deferred_once(fmt, ...)				\
+	printk_deferred_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_crit_deferred_once(fmt, ...)					\
+	printk_deferred_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_err_deferred_once(fmt, ...)					\
+	printk_deferred_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_warn_deferred_once(fmt, ...)					\
+	printk_deferred_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_notice_deferred_once(fmt, ...)				\
+	printk_deferred_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_info_deferred_once(fmt, ...)					\
+	printk_deferred_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
+/* no pr_cont_deferred_once, don't do that... */
+
 #if defined(DEBUG)
 #define pr_devel_once(fmt, ...)					\
 	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_devel_deferred_once(fmt, ...)			\
+	printk_deferred_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #else
 #define pr_devel_once(fmt, ...)					\
 	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_devel_deferred_once(fmt, ...)			\
+	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #endif
 
 /* If you are writing a driver, please use dev_dbg instead */
 #if defined(DEBUG)
 #define pr_debug_once(fmt, ...)					\
 	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_debug_deferred_once(fmt, ...)			\
+	printk_deferred_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #else
 #define pr_debug_once(fmt, ...)					\
 	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_debug_deferred_once(fmt, ...)			\
+	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #endif
 
 /*
-- 
2.25.1