The kernel can change spinlock behavior when running as a guest. But
this guest-friendly behavior causes performance problems on bare metal.
So there's a 'virt_spin_lock_key' static key to switch between the two
modes.
The static key is always enabled by default (run in guest mode) and
should be d
On Fri, May 24, 2024 at 09:55:48AM +0200, Miklos Szeredi wrote:
> On Fri, 24 May 2024 at 02:47, John Groves wrote:
>
> > Apologies, but I'm short on time at the moment - going into a long holiday
> > weekend in the US with family plans. I should be focused again by middle of
> > next week.
>
> N
btf_find_struct_member() might return NULL or an error via the
ERR_PTR() macro. However, its caller in parse_btf_field() only checks
for the NULL condition. Fix this by using IS_ERR() and returning the
error up the stack.
Fixes: c440adfbe3025 ("tracing/probes: Support BTF based data structure fiel
On 24/05/2024 19:55, Luca Weiss wrote:
> On Donnerstag, 23. Mai 2024 08:19:11 MESZ Krzysztof Kozlowski wrote:
>> On 23/05/2024 08:16, Luca Weiss wrote:
>>> On Donnerstag, 23. Mai 2024 08:02:13 MESZ Krzysztof Kozlowski wrote:
On 22/05/2024 19:34, Luca Weiss wrote:
> On Mittwoch, 22. Mai 202
On Fri, 24 May 2024 18:41:56 -0400
Steven Rostedt wrote:
> On Tue, 7 May 2024 23:08:00 +0900
> "Masami Hiramatsu (Google)" wrote:
>
> > Steven Rostedt (VMware) (15):
> > function_graph: Convert ret_stack to a series of longs
> > fgraph: Use BUILD_BUG_ON() to make sure we have struc
On Fri, 24 May 2024 21:32:08 -0400
Steven Rostedt wrote:
> On Tue, 7 May 2024 23:09:22 +0900
> "Masami Hiramatsu (Google)" wrote:
>
> > @@ -109,6 +244,21 @@ ftrace_push_return_trace(unsigned long ret, unsigned
> > long func,
> > if (!current->ret_stack)
> > return -EBUSY;
> >
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