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-rw-r--r--init/Kconfig24
1 files changed, 0 insertions, 24 deletions
diff --git a/init/Kconfig b/init/Kconfig
index c88bb30a8b0b..04acc3f80538 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -765,30 +765,6 @@ config LOG_CPU_MAX_BUF_SHIFT
13 => 8 KB for each CPU
12 => 4 KB for each CPU
-config PRINTK_SAFE_LOG_BUF_SHIFT
- int "Temporary per-CPU printk log buffer size (12 => 4KB, 13 => 8KB)"
- range 10 21
- default 13
- depends on PRINTK
- help
- Select the size of an alternate printk per-CPU buffer where messages
- printed from unsafe contexts are temporary stored. One example would
- be NMI messages, another one - printk recursion. The messages are
- copied to the main log buffer in a safe context to avoid a deadlock.
- The value defines the size as a power of 2.
-
- Those messages are rare and limited. The largest one is when
- a backtrace is printed. It usually fits into 4KB. Select
- 8KB if you want to be on the safe side.
-
- Examples:
- 17 => 128 KB for each CPU
- 16 => 64 KB for each CPU
- 15 => 32 KB for each CPU
- 14 => 16 KB for each CPU
- 13 => 8 KB for each CPU
- 12 => 4 KB for each CPU
-
config PRINTK_INDEX
bool "Printk indexing debugfs interface"
depends on PRINTK && DEBUG_FS