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| author | Daniel T. Lee <danieltimlee@gmail.com> | 2019-02-27 02:52:26 -0500 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-02-27 17:27:22 +0100 |
| commit | d2e614cb0795d935aee879e47aab231247274f13 (patch) | |
| tree | 3004ab61b1ad0e1611083510111f3faa8d3c61d0 /samples/bpf/task_fd_query_user.c | |
| parent | da4e023e452801204f645a502e87352d7f17689d (diff) | |
| download | lwn-d2e614cb0795d935aee879e47aab231247274f13.tar.gz lwn-d2e614cb0795d935aee879e47aab231247274f13.zip | |
samples: bpf: fix: broken sample regarding removed function
Currently, running sample "task_fd_query" and "tracex3" occurs the
following error. On kernel v5.0-rc* this sample will be unavailable
due to the removal of function 'blk_start_request' at commit "a1ce35f".
(function removed, as "Single Queue IO scheduler" no longer exists)
$ sudo ./task_fd_query
failed to create kprobe 'blk_start_request' error 'No such file or
directory'
This commit will change the function 'blk_start_request' to
'blk_mq_start_request' to fix the broken sample.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'samples/bpf/task_fd_query_user.c')
| -rw-r--r-- | samples/bpf/task_fd_query_user.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/task_fd_query_user.c b/samples/bpf/task_fd_query_user.c index 8381d792f138..aff2b4ae914e 100644 --- a/samples/bpf/task_fd_query_user.c +++ b/samples/bpf/task_fd_query_user.c @@ -311,7 +311,7 @@ int main(int argc, char **argv) } /* test two functions in the corresponding *_kern.c file */ - CHECK_AND_RET(test_debug_fs_kprobe(0, "blk_start_request", + CHECK_AND_RET(test_debug_fs_kprobe(0, "blk_mq_start_request", BPF_FD_TYPE_KPROBE)); CHECK_AND_RET(test_debug_fs_kprobe(1, "blk_account_io_completion", BPF_FD_TYPE_KRETPROBE)); |