[for-linus][PATCH 03/20] fgraph: Remove unused FGRAPH_MAX_INDEX

From: Steven Rostedt

Date: Fri Sep 11 2026 - 14:30:42 EST


From: Donggeun Yoo <donggeunyoo.kernel@xxxxxxxxx>

FGRAPH_MAX_INDEX has no user, and it expands to FGRAPH_INDEX_SIZE and
FGRAPH_RET_INDEX, neither of which is defined anywhere in the tree. It
was added in that form by commit 91c46b0aa917 ("function_graph:
Implement fgraph_reserve_data() and fgraph_retrieve_data()"), which
introduced the current data word layout under new names, so anything
referencing it would have failed to build ever since.

Remove it.

Link: https://patch.msgid.link/20260905211922.1196366-1-donggeunyoo.kernel@xxxxxxxxx
Signed-off-by: Donggeun Yoo <donggeunyoo.kernel@xxxxxxxxx>
Acked-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
kernel/trace/fgraph.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c
index 40d373d65f9b..ed455b53513b 100644
--- a/kernel/trace/fgraph.c
+++ b/kernel/trace/fgraph.c
@@ -143,9 +143,6 @@ enum {
#define FGRAPH_DATA_INDEX_MASK GENMASK(FGRAPH_DATA_INDEX_BITS - 1, 0)
#define FGRAPH_DATA_INDEX_SHIFT (FGRAPH_DATA_SHIFT + FGRAPH_DATA_BITS)

-#define FGRAPH_MAX_INDEX \
- ((FGRAPH_INDEX_SIZE << FGRAPH_DATA_BITS) + FGRAPH_RET_INDEX)
-
#define FGRAPH_ARRAY_SIZE FGRAPH_INDEX_BITS

/*
--
2.53.0