[PATCH v1 11/22] powerpc/ftrace: Remove ftrace_plt_tramps[]
From: Christophe Leroy <hidden>
Date: 2022-03-24 14:31:10
Also in:
lkml
Subsystem:
function hooks (ftrace), linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Steven Rostedt, Masami Hiramatsu, Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
ftrace_plt_tramps table is never filled so it is useless. Remove it. Signed-off-by: Christophe Leroy <redacted> --- arch/powerpc/kernel/trace/ftrace.c | 8 -------- 1 file changed, 8 deletions(-)
diff --git a/arch/powerpc/kernel/trace/ftrace.c b/arch/powerpc/kernel/trace/ftrace.c
index 188f59f4ee4a..b6c5223e26b2 100644
--- a/arch/powerpc/kernel/trace/ftrace.c
+++ b/arch/powerpc/kernel/trace/ftrace.c@@ -250,7 +250,6 @@ static int setup_mcount_compiler_tramp(unsigned long tramp) int i; ppc_inst_t op; unsigned long ptr; - static unsigned long ftrace_plt_tramps[NUM_FTRACE_TRAMPS]; /* Is this a known long jump tramp? */ for (i = 0; i < NUM_FTRACE_TRAMPS; i++)
@@ -259,13 +258,6 @@ static int setup_mcount_compiler_tramp(unsigned long tramp) else if (ftrace_tramps[i] == tramp) return 0; - /* Is this a known plt tramp? */ - for (i = 0; i < NUM_FTRACE_TRAMPS; i++) - if (!ftrace_plt_tramps[i]) - break; - else if (ftrace_plt_tramps[i] == tramp) - return -1; - /* New trampoline -- read where this goes */ if (copy_inst_from_kernel_nofault(&op, (void *)tramp)) { pr_debug("Fetching opcode failed.\n");
--
2.35.1