On Fri, 2015-03-06 at 14:43 -0500, Jes Sorensen wrote: > Joe Perches <joe@xxxxxxxxxxx> writes: > > On Fri, 2015-03-06 at 11:08 -0500, Jes Sorensen wrote: > >> Julia Lawall <julia.lawall@xxxxxxx> writes: > >> > On Fri, 6 Mar 2015, Jes Sorensen wrote: > >> >> Quentin Lambert <lambert.quentin@xxxxxxxxx> writes: > >> >> > This patch reduces the kernel size by removing error messages > >> >> > that duplicate > >> >> > the normal OOM message. > >> >> > A simplified version of the semantic patch that finds this problem is as > >> >> > follows: (http://coccinelle.lip6.fr) > >> >> This patch removes useful warnings about what allocation failed. The > >> >> messages removed are NOT duplicate! > >> > Is it really the case that the information can't be reconstructed from the > >> > information generated by kmalloc on failure? To my understanding there is > >> > a stack trace, and from scanning through the changes I see only one change > >> > per function, so perhaps the stack trace already makes it clear where the > >> > problem occurred? > >> It may be possible to backtrack, but this change just makes it harder. > >> There are tons of real issues to fix in this driver, this patch just > >> increases the risk of patch conflicts for no real gain. > > > > Making the allocation less likely to fail for > > low memory systems is a gain. > > > > The allocation failures themselves are low > > likelihood events. Determining which specific > > memory allocation failure occurred has near > > nil value. > > Joe, Jes, > That is bologna, We disagree, and I rather like minced meat sausages. > knowing which allocation failed has a lot of value, it > allows the developer to go back and look at the allocation sizes, > parameters applied etc. Likely enough of this is emitted by the generic OOM message and stack dump. > This is a classic case of blindly applied script 'fixes' causing more > harm than good. cheesy tomato/tomahto. Goes well with baloney. cheers, Joe -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
