Re: [PATCH v4 0/6] Micro-optimize vclock_gettime

[Andi Kleen]

>  - Don't turn off frame pointers in vDSO code.

Why? Note frame pointers are costly on some CPUs, like Atom.

Also unlike the primitive state of the kernel the user space debuggers
are usually advanced enough to support dwarf2 unwinding.

-Andi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/