scripts/gdb: fix python 3.8 SyntaxWarning
Fixes the observed warnings: scripts/gdb/linux/rbtree.py:20: SyntaxWarning: "is" with a literal. Did you mean "=="? if node is 0: scripts/gdb/linux/rbtree.py:36: SyntaxWarning: "is" with a literal. Did you mean "=="? if node is 0: It looks like this is a new warning added in Python 3.8. I've only seen this once after adding the add-auto-load-safe-path rule to my ~/.gdbinit for a new tree. Fixes: commit 449ca0c9 ("scripts/gdb: add rb tree iterating utilities") Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kieran Bingham <kbingham@kernel.org> Cc: Aymeric Agon-Rambosson <aymeric.agon@yandex.com> Link: http://lkml.kernel.org/r/20200805225015.2847624-1-ndesaulniers@google.com Link: https://adamj.eu/tech/2020/01/21/why-does-python-3-8-syntaxwarning-for-is-literal/Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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