On Sat, Jun 1, 2024 at 1:57 PM Vlastimil Babka wrote:
>
> On 5/31/24 6:43 PM, Alexei Starovoitov wrote:
> > On Fri, May 31, 2024 at 2:33 AM Vlastimil Babka wrote:
> >> might_alloc(flags);
> >>
> >> - if (unlikely(should_failslab(s, flags)))
> >> - return NULL;
> >> +
On 5/31/24 6:43 PM, Alexei Starovoitov wrote:
> On Fri, May 31, 2024 at 2:33 AM Vlastimil Babka wrote:
>> might_alloc(flags);
>>
>> - if (unlikely(should_failslab(s, flags)))
>> - return NULL;
>> + if (static_branch_unlikely(_failslab_active)) {
>> +
On Fri, May 31, 2024 at 11:33:34AM +0200, Vlastimil Babka wrote:
> Since commit 4f6923fbb352 ("mm: make should_failslab always available for
> fault injection") should_failslab() is unconditionally a noinline
> function. This adds visible overhead to the slab allocation hotpath,
> even if the
On Fri, May 31, 2024 at 9:44 AM Alexei Starovoitov
wrote:
>
> On Fri, May 31, 2024 at 2:33 AM Vlastimil Babka wrote:
> >
> > Since commit 4f6923fbb352 ("mm: make should_failslab always available for
> > fault injection") should_failslab() is unconditionally a noinline
> > function. This adds
On Fri, May 31, 2024 at 2:33 AM Vlastimil Babka wrote:
>
> Since commit 4f6923fbb352 ("mm: make should_failslab always available for
> fault injection") should_failslab() is unconditionally a noinline
> function. This adds visible overhead to the slab allocation hotpath,
> even if the function is
Since commit 4f6923fbb352 ("mm: make should_failslab always available for
fault injection") should_failslab() is unconditionally a noinline
function. This adds visible overhead to the slab allocation hotpath,
even if the function is empty. With CONFIG_FAILSLAB=y there's additional
overhead when
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