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sparc32: make show_stack() acquire %fp if @_ksp is not specified
show_stack(current or NULL, NULL) is used by arch-independent code to dump backtrace of the current task; however, sparc32 show_stack() doesn't implement it and wouldn't print any backtrace when NULL @_ksp is specfied. Make show_stack() acquire and use %fp if @tsk is NULL or current and @_ksp is NULL. This makes %fp fetching in dump_stack() unnecessary. Make it use NULL for @_ksp instead. Only compile tested. Signed-off-by: Tejun Heo <[email protected]> Acked-by: David S. Miller <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Fengguang Wu <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Jesper Nilsson <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Mike Frysinger <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Sam Ravnborg <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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