From: Dmitry Safonov <dima@xxxxxxxxxx> Date: Wed, 6 Nov 2019 03:05:25 +0000 > 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(). > > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > Cc: sparclinux@xxxxxxxxxxxxxxx > [1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@xxxxxxxxxx/T/#u > Signed-off-by: Dmitry Safonov <dima@xxxxxxxxxx> Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
