On Tue, 2014-01-28 at 16:08 -0500, Dave Jones wrote: > On Tue, Jan 28, 2014 at 12:25:15PM -0800, Linus Torvalds wrote: > > On Tue, Jan 28, 2014 at 12:15 PM, Borislav Petkov <b...@alien8.de> wrote: > > > > > > Shouldn't we hold that down in the Kconfig help text of DEBUG_INFO? > > > Something like: > > > > > > "You don't need to enable this if you want symbolic names for kernel > > > objects. Enable CONFIG_KALLSYMS instead." > > > > Probably. And then we should make sure that allyesconfig/allmodconfig > > don't pick it. > > > > There *are* reasonable uses for DEBUG_INFO: > > > > - if you very actively and extensively use kgdb, DEBUG_INFO is very > useful. > > > > - distros might want to build distro kernels with DEBUG_INFO for the > > kernel debug package > > - objdump -S is kind of useful. I find myself using that quite often. > (like at least a dozen times each merge window)
For those with wimpy asm muscles (/me), it's very useful indeed, as are gdb list *foo()+0x10 or *0xfeedbabedeadbeef. I always build with full DEBUG_INFO, just keep configs lean enough that lots of kernels fit in a 2G /boot, and _never ever_ set a box up with a microscopic root. > pretty sure it works with DEBUG_INFO_REDUCED though, which is somewhat > faster than full DEBUG_INFO Yeah, it does. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
