diff mbox series

[bpf-next,2/7] bpf: Call maybe_wait_bpf_programs() only once for generic_map_update_batch()

Message ID 20231208102355.2628918-3-houtao@huaweicloud.com (mailing list archive)
State Accepted
Commit 37ba5b59d6adfa08926acd3a833608487a18c2ef
Delegated to: BPF
Headers show
Series bpf: Fixes for maybe_wait_bpf_programs() | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR success PR summary
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/ynl success SINGLE THREAD; Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1117 this patch: 1117
netdev/cc_maintainers success CCed 12 of 12 maintainers
netdev/build_clang success Errors and warnings before: 1143 this patch: 1143
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1144 this patch: 1144
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 22 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
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Commit Message

Hou Tao Dec. 8, 2023, 10:23 a.m. UTC 
From: Hou Tao <houtao1@huawei.com>

Just like commit 9087c6ff8dfe ("bpf: Call maybe_wait_bpf_programs() only
once from generic_map_delete_batch()"), there is also no need to call
maybe_wait_bpf_programs() for each update in batched update, so only
call it once in generic_map_update_batch().

Signed-off-by: Hou Tao <houtao1@huawei.com>
---
 kernel/bpf/syscall.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 71d869f74236..9d9bb82e6062 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -203,7 +203,6 @@  static int bpf_map_update_value(struct bpf_map *map, struct file *map_file,
 		rcu_read_unlock();
 	}
 	bpf_enable_instrumentation();
-	maybe_wait_bpf_programs(map);
 
 	return err;
 }
@@ -1561,6 +1560,7 @@  static int map_update_elem(union bpf_attr *attr, bpfptr_t uattr)
 	}
 
 	err = bpf_map_update_value(map, f.file, key, value, attr->flags);
+	maybe_wait_bpf_programs(map);
 
 	kvfree(value);
 free_key:
@@ -1800,6 +1800,8 @@  int generic_map_update_batch(struct bpf_map *map, struct file *map_file,
 
 	kvfree(value);
 	kvfree(key);
+
+	maybe_wait_bpf_programs(map);
 	return err;
 }