• Linus Torvalds's avatar
    Disable the __builtin_return_address() warning globally after all · ef6000b4
    Linus Torvalds authored
    This affectively reverts commit 377ccbb4 ("Makefile: Mute warning
    for __builtin_return_address(>0) for tracing only") because it turns out
    that it really isn't tracing only - it's all over the tree.
    We already also had the warning disabled separately for mm/usercopy.c
    (which this commit also removes), and it turns out that we will also
    want to disable it for get_lock_parent_ip(), that is used for at least
    TRACE_IRQFLAGS.  Which (when enabled) ends up being all over the tree.
    Steven Rostedt had a patch that tried to limit it to just the config
    options that actually triggered this, but quite frankly, the extra
    complexity and abstraction just isn't worth it.  We have never actually
    had a case where the warning is actually useful, so let's just disable
    it globally and not worry about it.
    Acked-by: default avatarSteven Rostedt <rostedt@goodmis.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Ingo Molnar <mingo@kernel.org>
    Cc: Peter Anvin <hpa@zytor.com>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>