[PATCH bpf-next v2 0/4] Add ftrace direct call for arm64
Steven Rostedt
rostedt at goodmis.org
Wed Oct 5 08:07:07 PDT 2022
On Wed, 5 Oct 2022 22:54:15 +0800
Xu Kuohai <xukuohai at huawei.com> wrote:
> 1.3 attach bpf prog with with direct call, bpftrace -e 'kfunc:vfs_write {}'
>
> # dd if=/dev/zero of=/dev/null count=1000000
> 1000000+0 records in
> 1000000+0 records out
> 512000000 bytes (512 MB, 488 MiB) copied, 1.72973 s, 296 MB/s
>
>
> 1.4 attach bpf prog with with indirect call, bpftrace -e 'kfunc:vfs_write {}'
>
> # dd if=/dev/zero of=/dev/null count=1000000
> 1000000+0 records in
> 1000000+0 records out
> 512000000 bytes (512 MB, 488 MiB) copied, 1.99179 s, 257 MB/s
Can you show the implementation of the indirect call you used?
Thanks,
-- Steve
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