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powerpc/ftrace: Remove ftrace_plt_tramps[] 

ftrace_plt_tramps table is never filled so it is useless.

Remove it.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/daeeb618a6619e3a7e3f82f1bd83ca7c25af6330.1652074503.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2022-05-09 07:36:12 +02:00 committed by Michael Ellerman
parent c2cba93d1a
commit ccf6607e45
1 changed files with 0 additions and 8 deletions
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8
arch/powerpc/kernel/trace/ftrace.c
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@ -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");