bpf: Add lookup_and_delete_elem for BPF_MAP_STACK_TRACE #6048
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added 3 commits
September 25, 2025 15:58
The stacktrace map can be easily full, which will lead to failure in obtaining the stack. In addition to increasing the size of the map, another solution is to delete the stack_id after looking it up from the user, so extend the existing bpf_map_lookup_and_delete_elem() functionality to stacktrace map types. Signed-off-by: Tao Chen <[email protected]>
The loading method of the stacktrace_map test case looks too outdated, refactor it with skeleton, and we can use global avariable feature in the next patch. Signed-off-by: Tao Chen <[email protected]>
Add tests for stacktrace map lookup and delete: 1. use bpf_map_lookup_and_delete_elem to lookup and delete the target stack_id, 2. lookup the deleted stack_id again to double check. Signed-off-by: Tao Chen <[email protected]>
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=1006312 irrelevant now. Closing PR. |
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Pull request for series with
subject: bpf: Add lookup_and_delete_elem for BPF_MAP_STACK_TRACE
version: 6
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1006312