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authorDmitry Safonov <dima@arista.com>2020-06-09 07:31:33 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-09 19:39:12 +0300
commit539e786cc37ee5cb6e051ef5eb72b7a7c03022cf (patch)
tree15228aeb2e910ade03029b542cb41a87f33efb4b /arch/sh/include
parent2deebe4d56d638269a4a728086d64de5734b460a (diff)
downloadlinux-539e786cc37ee5cb6e051ef5eb72b7a7c03022cf.tar.xz
sh: add loglvl to show_trace()
Currently, the log-level of show_stack() depends on a platform realization. It creates situations where the headers are printed with lower log level or higher than the stacktrace (depending on a platform or user). Furthermore, it forces the logic decision from user to an architecture side. In result, some users as sysrq/kdb/etc are doing tricks with temporary rising console_loglevel while printing their messages. And in result it not only may print unwanted messages from other CPUs, but also omit printing at all in the unlucky case where the printk() was deferred. Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier approach than introducing more printk buffers. Also, it will consolidate printings with headers. Add log level parameter to show_trace() as a preparation to introduce show_stack_loglvl(). [1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#u Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Rich Felker <dalias@libc.org> Link: http://lkml.kernel.org/r/20200418201944.482088-33-dima@arista.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sh/include')
-rw-r--r--arch/sh/include/asm/processor_32.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/include/asm/processor_32.h b/arch/sh/include/asm/processor_32.h
index 0e0ecc0132e3..d44409413418 100644
--- a/arch/sh/include/asm/processor_32.h
+++ b/arch/sh/include/asm/processor_32.h
@@ -171,7 +171,7 @@ static __inline__ void enable_fpu(void)
#define thread_saved_pc(tsk) (tsk->thread.pc)
void show_trace(struct task_struct *tsk, unsigned long *sp,
- struct pt_regs *regs);
+ struct pt_regs *regs, const char *loglvl);
#ifdef CONFIG_DUMP_CODE
void show_code(struct pt_regs *regs);