Commit ccf6607e authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/ftrace: Remove ftrace_plt_tramps[] 



ftrace_plt_tramps table is never filled so it is useless.

Remove it.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/daeeb618a6619e3a7e3f82f1bd83ca7c25af6330.1652074503.git.christophe.leroy@csgroup.eu
parent c2cba93d

arch/powerpc/kernel/trace/ftrace.c

+0 −8
Original line number Diff line number Diff line
@@ -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");