bpf: Introduce BPF_F_CPU and BPF_F_ALL_CPUS flags for percpu maps #5935
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
![kernel-patches-daemon-bpf-rc[bot]](https://avatars.githubusercontent.com/u/70728002?s=60&v=4){kind=small}
|
Upstream branch: f859813 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
ba991b7 to
cf2fd3b
Compare
|
Upstream branch: 5d87e96 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
e03e6c4 to
9b214ce
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
cf2fd3b to
cd9a59e
Compare
|
Upstream branch: a578b54 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
9b214ce to
58ceb62
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
cd9a59e to
41fb65e
Compare
|
Upstream branch: 6798668 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
58ceb62 to
019546d
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
41fb65e to
bcefb31
Compare
|
Upstream branch: fd2e081 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
019546d to
63bc4a1
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
bcefb31 to
9de6d74
Compare
|
Upstream branch: 32d3766 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
63bc4a1 to
fd00855
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
9de6d74 to
607e46d
Compare
|
Upstream branch: f7528e4 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
fd00855 to
2bf8dd0
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
607e46d to
0f635c7
Compare
|
Upstream branch: 61ee2cc |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
2bf8dd0 to
dec8da4
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
0f635c7 to
cde4d9b
Compare
|
Upstream branch: 3ae4c52 |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
dec8da4 to
7abbc20
Compare
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
bpf-next_base
branch
from
cde4d9b to
2b3c471
Compare
|
Upstream branch: b13448d |
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
7abbc20 to
ec987bc
Compare
It is to unify map flags checking for lookup_elem, update_elem, lookup_batch and update_batch APIs. Therefore, it will be convenient to check BPF_F_CPU and BPF_F_ALL_CPUS flags in it for these APIs in next patch. Signed-off-by: Leon Hwang <[email protected]> Acked-by: Andrii Nakryiko <[email protected]>
Introduce BPF_F_CPU and BPF_F_ALL_CPUS flags and check them for following APIs: * 'map_lookup_elem()' * 'map_update_elem()' * 'generic_map_lookup_batch()' * 'generic_map_update_batch()' And, get the correct value size for these APIs. Signed-off-by: Leon Hwang <[email protected]> Acked-by: Andrii Nakryiko <[email protected]>
…maps Introduce support for the BPF_F_ALL_CPUS flag in percpu_array maps to allow updating values for all CPUs with a single value for both update_elem and update_batch APIs. Introduce support for the BPF_F_CPU flag in percpu_array maps to allow: * update value for specified CPU for both update_elem and update_batch APIs. * lookup value for specified CPU for both lookup_elem and lookup_batch APIs. The BPF_F_CPU flag is passed via: * map_flags of lookup_elem and update_elem APIs along with embedded cpu info. * elem_flags of lookup_batch and update_batch APIs along with embedded cpu info. Signed-off-by: Leon Hwang <[email protected]>
…nd lru_percpu_hash maps Introduce BPF_F_ALL_CPUS flag support for percpu_hash and lru_percpu_hash maps to allow updating values for all CPUs with a single value for both update_elem and update_batch APIs. Introduce BPF_F_CPU flag support for percpu_hash and lru_percpu_hash maps to allow: * update value for specified CPU for both update_elem and update_batch APIs. * lookup value for specified CPU for both lookup_elem and lookup_batch APIs. The BPF_F_CPU flag is passed via: * map_flags along with embedded cpu info. * elem_flags along with embedded cpu info. Signed-off-by: Leon Hwang <[email protected]>
…_storage maps Introduce BPF_F_ALL_CPUS flag support for percpu_cgroup_storage maps to allow updating values for all CPUs with a single value for update_elem API. Introduce BPF_F_CPU flag support for percpu_cgroup_storage maps to allow: * update value for specified CPU for update_elem API. * lookup value for specified CPU for lookup_elem API. The BPF_F_CPU flag is passed via map_flags along with embedded cpu info. Signed-off-by: Leon Hwang <[email protected]>
Add libbpf support for the BPF_F_CPU flag for percpu maps by embedding the cpu info into the high 32 bits of: 1. **flags**: bpf_map_lookup_elem_flags(), bpf_map__lookup_elem(), bpf_map_update_elem() and bpf_map__update_elem() 2. **opts->elem_flags**: bpf_map_lookup_batch() and bpf_map_update_batch() And the flag can be BPF_F_ALL_CPUS, but cannot be 'BPF_F_CPU | BPF_F_ALL_CPUS'. Behavior: * If the flag is BPF_F_ALL_CPUS, the update is applied across all CPUs. * If the flag is BPF_F_CPU, it updates value only to the specified CPU. * If the flag is BPF_F_CPU, lookup value only from the specified CPU. * lookup does not support BPF_F_ALL_CPUS. Signed-off-by: Leon Hwang <[email protected]> Acked-by: Andrii Nakryiko <[email protected]>
|
Upstream branch: b13448d |
Add test coverage for the new BPF_F_CPU and BPF_F_ALL_CPUS flags support in percpu maps. The following APIs are exercised: * bpf_map_update_batch() * bpf_map_lookup_batch() * bpf_map_update_elem() * bpf_map__update_elem() * bpf_map_lookup_elem_flags() * bpf_map__lookup_elem() cd tools/testing/selftests/bpf/ ./test_progs -t percpu_alloc 253/13 percpu_alloc/cpu_flag_percpu_array:OK 253/14 percpu_alloc/cpu_flag_percpu_hash:OK 253/15 percpu_alloc/cpu_flag_lru_percpu_hash:OK 253/16 percpu_alloc/cpu_flag_percpu_cgroup_storage:OK 253 percpu_alloc:OK Summary: 1/16 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Leon Hwang <[email protected]>
kernel-patches-daemon-bpf-rc
bot
force-pushed
the
series/1001043=>bpf-next
branch
from
ec987bc to
9596458
Compare
|
At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=1001043 expired. Closing PR. |
kernel-patches-daemon-bpf-rc
bot
deleted the
series/1001043=>bpf-next
branch
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Pull request for series with
subject: bpf: Introduce BPF_F_CPU and BPF_F_ALL_CPUS flags for percpu maps
version: 7
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1001043