Commit 0c705be9 authored by Marc Aurèle La France's avatar Marc Aurèle La France Committed by Petr Mladek
Browse files

Remove orphaned CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT 



After the commit 93d102f0 ("printk: remove safe buffers"),
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT is no longer useful.  Remove it.

Signed-off-by: default avatarMarc Aurèle La France <tsi@tuyoix.net>
Reviewed-by: default avatarJohn Ogness <john.ogness@linutronix.de>
Reviewed-by: default avatarSergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: default avatarPetr Mladek <pmladek@suse.com>
[pmladek@suse.cz: Cleaned up the commit message.]
Signed-off-by: default avatarPetr Mladek <pmladek@suse.com>
Fixes: 93d102f0 ("printk: remove safe buffers")
Link: https://lore.kernel.org/r/5c19e248-1b6b-330c-7c4c-a824688daefe@tuyoix.net
parent d8763154

arch/powerpc/configs/microwatt_defconfig

+0 −1
Original line number Diff line number Diff line
@@ -4,7 +4,6 @@ CONFIG_HIGH_RES_TIMERS=y 
CONFIG_PREEMPT_VOLUNTARY=y

CONFIG_TICK_CPU_ACCOUNTING=y

CONFIG_LOG_BUF_SHIFT=16

CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12

CONFIG_CGROUPS=y

CONFIG_BLK_DEV_INITRD=y

CONFIG_CC_OPTIMIZE_FOR_SIZE=y

arch/riscv/configs/nommu_k210_defconfig

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Original line number Diff line number Diff line 
# CONFIG_CPU_ISOLATION is not set

CONFIG_LOG_BUF_SHIFT=13

CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12

CONFIG_BLK_DEV_INITRD=y

# CONFIG_RD_GZIP is not set

# CONFIG_RD_BZIP2 is not set

arch/riscv/configs/nommu_k210_sdcard_defconfig

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Original line number Diff line number Diff line 
# CONFIG_CPU_ISOLATION is not set

CONFIG_LOG_BUF_SHIFT=13

CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12

CONFIG_CC_OPTIMIZE_FOR_SIZE=y

# CONFIG_SYSFS_SYSCALL is not set

# CONFIG_FHANDLE is not set

arch/riscv/configs/nommu_virt_defconfig

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Original line number Diff line number Diff line 
# CONFIG_CPU_ISOLATION is not set

CONFIG_LOG_BUF_SHIFT=16

CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12

CONFIG_BLK_DEV_INITRD=y

# CONFIG_RD_BZIP2 is not set

# CONFIG_RD_LZMA is not set

init/Kconfig

+0 −24
Original line number Diff line number Diff line
@@ -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