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Re: [PATCH 2/3] early_printk: Add force_early_printk kernel parameter

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 2/3] early_printk: Add force_early_printk kernel parameter
Date 2017-09-28 18:10 +0200
Message-ID <uuJxT-2Gx-3@gated-at.bofh.it> (permalink)
References <uuG70-vR-5@gated-at.bofh.it> <uuG70-vR-29@gated-at.bofh.it> <uuJez-2kP-33@gated-at.bofh.it>
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On Thu, Sep 28, 2017 at 08:41:37AM -0700, Randy Dunlap wrote:

> Please add that kernel parameter to Documentation/admin-guide/kernel-parameters.txt.

Something like so?

--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1165,6 +1165,11 @@
 			parameter will force ia64_sal_cache_flush to call
 			ia64_pal_cache_flush instead of SAL_CACHE_FLUSH.
 
+	force_early_printk
+			Forcefully uses early_console (as per earlyprintk=)
+			usage for regular printk, bypassing everything,
+			including the syslog (dmesg will be empty).
+
 	forcepae [X86-32]
 			Forcefully enable Physical Address Extension (PAE).
 			Many Pentium M systems disable PAE but may have a

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Thread

[PATCH 2/3] early_printk: Add force_early_printk kernel parameter Peter Zijlstra <peterz@infradead.org> - 2017-09-28 14:30 +0200
  Re: [PATCH 2/3] early_printk: Add force_early_printk kernel parameter Randy Dunlap <rdunlap@infradead.org> - 2017-09-28 17:50 +0200
    Re: [PATCH 2/3] early_printk: Add force_early_printk kernel parameter Peter Zijlstra <peterz@infradead.org> - 2017-09-28 18:10 +0200
      Re: [PATCH 2/3] early_printk: Add force_early_printk kernel parameter Randy Dunlap <rdunlap@infradead.org> - 2017-09-28 19:10 +0200

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