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3 Commits

Author SHA1 Message Date
Masami Hiramatsu (Google)
9704669c38 tracing/probes: Fix to search structure fields correctly 
Fix to search a field from the structure which has anonymous union
correctly.
Since the reference `type` pointer was updated in the loop, the search
loop suddenly aborted where it hits an anonymous union. Thus it can not
find the field after the anonymous union. This avoids updating the
cursor `type` pointer in the loop.

Link: https://lore.kernel.org/all/170791694361.389532.10047514554799419688.stgit@devnote2/

Fixes: 302db0f5b3d8 ("tracing/probes: Add a function to search a member of a struct/union")
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
 2024-02-17 21:25:42 +09:00
Masami Hiramatsu (Google)
302db0f5b3 tracing/probes: Add a function to search a member of a struct/union 
Add btf_find_struct_member() API to search a member of a given data structure
or union from the member's name.

Link: https://lore.kernel.org/all/169272156248.160970.8868479822371129043.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2023-08-23 09:40:16 +09:00
Masami Hiramatsu (Google)
ebeed8d4a5 tracing/probes: Move finding func-proto API and getting func-param API to trace_btf 
Move generic function-proto find API and getting function parameter API
to BTF library code from trace_probe.c. This will avoid redundant efforts
on different feature.

Link: https://lore.kernel.org/all/169272155255.160970.719426926348706349.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2023-08-23 09:39:45 +09:00