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bpf: stream: start using kmalloc_nolock() #10082

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bpf: stream: start using kmalloc_nolock() #10082

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Pull request for series with
subject: bpf: stream: start using kmalloc_nolock()
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112

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Upstream branch: e758657
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
version: 1

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Upstream branch: e758657
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
version: 1

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Upstream branch: e758657
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
version: 1

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Upstream branch: e758657
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
version: 1

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Upstream branch: ff88079
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
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Upstream branch: f9db3a3
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
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Upstream branch: 8842732
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
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Upstream branch: 23f852d
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
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Upstream branch: 54c134f
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
version: 1

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Upstream branch: 9f317bd
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
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Upstream branch: 54c134f
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
version: 1

@puranjaymohan
bpf: stream: start using kmalloc_nolock()
89868e0 
BPF stream kfuncs need to be non-sleeping as they can be called from
programs running in any context, this requires a way to allocate memory
from any context. Currently, this is done by a custom per-CPU NMI-safe
bump allocation mechanism, backed by try_alloc_pages() and
free_pages_nolock() primitives.

As kmalloc_nolock() and kfree_nolock() primitives are available now, the
custom allocator can be removed in favor of these.

Signed-off-by: Puranjay Mohan <[email protected]>
Acked-by: Kumar Kartikeya Dwivedi <[email protected]>
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Upstream branch: e2e668b
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=1015112
version: 1

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