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authorMarc Aurèle La France <tsi@tuyoix.net>2023-02-20 22:10:32 -0700
committerPetr Mladek <pmladek@suse.com>2023-03-27 13:12:09 +0200
commit0c705be9609931920c299e76811b21acc9502f1a (patch)
treee53a50066a6d944ffc1ce6fa16b060f1210b98fa /init/Kconfig
parentd8763154455e92a2ffed256e48fa46bb35ef3bdf (diff)
Remove orphaned CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT
After the commit 93d102f094be9beab2 ("printk: remove safe buffers"), CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT is no longer useful. Remove it. Signed-off-by: Marc Aurèle La France <tsi@tuyoix.net> Reviewed-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Petr Mladek <pmladek@suse.com> [pmladek@suse.cz: Cleaned up the commit message.] Signed-off-by: Petr Mladek <pmladek@suse.com> Fixes: 93d102f094be9beab ("printk: remove safe buffers") Link: https://lore.kernel.org/r/5c19e248-1b6b-330c-7c4c-a824688daefe@tuyoix.net
Diffstat (limited to 'init/Kconfig')
-rw-r--r--init/Kconfig24
1 files changed, 0 insertions, 24 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 77a4318a6043..77c89142e44f 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -769,30 +769,6 @@ 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