diff options
| author | Naveen N Rao <naveen@kernel.org> | 2023-06-19 15:17:24 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-08-22 00:09:05 +1000 |
| commit | f3993a0330e2d11e42c095810c6c33084024df46 (patch) | |
| tree | 26349ad0cb0e140963ed96fda394b6a9e994f21a /arch/powerpc/kernel/vmlinux.lds.S | |
| parent | b5efb61c70f8ba9b1e168185530b9c7342184a4c (diff) | |
powerpc/ftrace: Extend ftrace support for large kernels to ppc32
Commit 67361cf8071286 ("powerpc/ftrace: Handle large kernel configs")
added ftrace support for ppc64 kernel images with a text section larger
than 32MB. The approach itself isn't specific to ppc64, so extend the
same to also work on ppc32.
While at it, reduce the space reserved for the stub from 64 bytes to 32
bytes since the different stub variants are all less than 8
instructions.
To reduce use of #ifdef, a stub implementation is provided for
kernel_toc_address() and -SZ_2G is cast to 'long long' to prevent
errors on ppc32.
Signed-off-by: Naveen N Rao <naveen@kernel.org>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/9fa3258cbb9105cf8a0a8135214d44ffbc75fe84.1687166935.git.naveen@kernel.org
Diffstat (limited to 'arch/powerpc/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/powerpc/kernel/vmlinux.lds.S | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 13614f0b269c..1c5970df3233 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -107,9 +107,7 @@ SECTIONS #endif /* careful! __ftr_alt_* sections need to be close to .text */ *(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text); -#ifdef CONFIG_PPC64 *(.tramp.ftrace.text); -#endif NOINSTR_TEXT SCHED_TEXT LOCK_TEXT @@ -276,9 +274,7 @@ SECTIONS */ . = ALIGN(PAGE_SIZE); _einittext = .; -#ifdef CONFIG_PPC64 *(.tramp.ftrace.init); -#endif } :text /* .exit.text is discarded at runtime, not link time, |