John Ogness 85e3e7fbbb printk: remove NMI tracking ... All NMI contexts are handled the same as the safe context: store the message and defer printing. There is no need to have special NMI context tracking for this. Using in_nmi() is enough. There are several parts of the kernel that are manually calling into the printk NMI context tracking in order to cause general printk deferred printing: arch/arm/kernel/smp.c arch/powerpc/kexec/crash.c kernel/trace/trace.c For arm/kernel/smp.c and powerpc/kexec/crash.c, provide a new function pair printk_deferred_enter/exit that explicitly achieves the same objective. For ftrace, remove the printk context manipulation completely. It was added in commit 03fc7f9c99 ("printk/nmi: Prevent deadlock when accessing the main log buffer in NMI"). The purpose was to enforce storing messages directly into the ring buffer even in NMI context. It really should have only modified the behavior in NMI context. There is no need for a special behavior any longer. All messages are always stored directly now. The console deferring is handled transparently in vprintk(). Signed-off-by: John Ogness <john.ogness@linutronix.de> [pmladek@suse.com: Remove special handling in ftrace.c completely. Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20210715193359.25946-5-john.ogness@linutronix.de		2021-07-26 15:09:44 +02:00
..
core.c	mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA	2021-06-29 10:53:55 -07:00
core_32.c
core_64.c	powerpc/book3s64/keys/kuap: Reset AMR/IAMR values on kexec	2020-07-20 22:57:59 +10:00
crash.c	printk: remove NMI tracking	2021-07-26 15:09:44 +02:00
elf_64.c	powerpc: If kexec_build_elf_info() fails return immediately from elf64_load()	2021-04-26 16:28:26 -05:00
file_load.c	powerpc: Delete unused function delete_fdt_mem_rsv()	2021-03-08 12:06:30 -07:00
file_load_64.c	powerpc/kexec_file: Use current CPU info while setting up FDT	2021-05-04 22:26:57 +10:00
Makefile	powerpc: Move arch independent ima kexec functions to drivers/of/kexec.c	2021-03-08 12:06:29 -07:00
ranges.c	powerpc/kexec_file: Avoid stomping memory used by special regions	2020-07-29 23:47:53 +10:00
relocate_32.S