diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-23 15:47:59 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-04-03 21:22:21 +1100 |
| commit | b0b3b2c78ec075cec4721986a95abbbac8c3da4f (patch) | |
| tree | e7fc69dcd5cc6fa92e54efa1b93b4272119da67c /arch/powerpc/kernel | |
| parent | 40272035e1d0edcd515ad45be297c4cce044536d (diff) | |
powerpc: Switch to relative jump labels
Convert powerpc to relative jump labels.
Before the patch, pseries_defconfig vmlinux.o has:
9074 __jump_table 0003f2a0 0000000000000000 0000000000000000 01321fa8 2**0
With the patch, the same config gets:
9074 __jump_table 0002a0e0 0000000000000000 0000000000000000 01321fb4 2**0
Size is 258720 without the patch, 172256 with the patch.
That's a 33% size reduction.
Largely copied from commit c296146c058c ("arm64/kernel: jump_label:
Switch to relative references")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/828348da7868eda953ce023994404dfc49603b64.1616514473.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/jump_label.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/jump_label.c b/arch/powerpc/kernel/jump_label.c index 144858027fa3..ce87dc5ea23c 100644 --- a/arch/powerpc/kernel/jump_label.c +++ b/arch/powerpc/kernel/jump_label.c @@ -11,10 +11,10 @@ void arch_jump_label_transform(struct jump_entry *entry, enum jump_label_type type) { - struct ppc_inst *addr = (struct ppc_inst *)(unsigned long)entry->code; + struct ppc_inst *addr = (struct ppc_inst *)jump_entry_code(entry); if (type == JUMP_LABEL_JMP) - patch_branch(addr, entry->target, 0); + patch_branch(addr, jump_entry_target(entry), 0); else patch_instruction(addr, ppc_inst(PPC_INST_NOP)); } |