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authorDmitry Safonov <dima@arista.com>2020-06-08 21:31:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-09 09:39:12 -0700
commit13c6371ae576840bcacc0fc8407d7b11572eb7fb (patch)
treec1783f02b67feaba117ae7dd10abf66da61bb3cd /arch/um/kernel
parente6e371c4f653db7581072a0a20b32a11a751ebda (diff)
sparc: add show_stack_loglvl()
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. Introduce show_stack_loglvl(), that eventually will substitute show_stack(). [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> Acked-by: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20200418201944.482088-35-dima@arista.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/kernel')
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