Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
samples/ftrace: Add support for ftrace direct samples on powerpc
Add powerpc 32-bit and 64-bit samples for ftrace direct. This serves to
show the sample instruction sequence to be used by ftrace direct calls
to adhere to the ftrace ABI.
On 64-bit powerpc, TOC setup requires some additional work.
Signed-off-by: Naveen N Rao <naveen@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20241030070850.1361304-17-hbathini@linux.ibm.com
authored by
Naveen N Rao
and committed by
Michael Ellerman
71db948b
a52f6043
+414
-5
+2
arch/powerpc/Kconfig
+2
arch/powerpc/Kconfig
···
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select HAVE_REGS_AND_STACK_ACCESS_API
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select HAVE_RELIABLE_STACKTRACE
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select HAVE_RSEQ
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+
select HAVE_SAMPLE_FTRACE_DIRECT if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
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+
select HAVE_SAMPLE_FTRACE_DIRECT_MULTI if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
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select HAVE_SETUP_PER_CPU_AREA if PPC64
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select HAVE_SOFTIRQ_ON_OWN_STACK
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select HAVE_STACKPROTECTOR if PPC32 && $(cc-option,$(m32-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 -mstack-protector-guard-offset=0)
+84
-1
samples/ftrace/ftrace-direct-modify.c
+84
-1
samples/ftrace/ftrace-direct-modify.c
···
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2
#include <linux/module.h>
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#include <linux/kthread.h>
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#include <linux/ftrace.h>
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#ifndef CONFIG_ARM64
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#if !defined(CONFIG_ARM64) && !defined(CONFIG_PPC32)
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#include <asm/asm-offsets.h>
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#endif
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···
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);
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#endif /* CONFIG_LOONGARCH */
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+
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#ifdef CONFIG_PPC
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#include <asm/ppc_asm.h>
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+
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#ifdef CONFIG_PPC64
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#define STACK_FRAME_SIZE 48
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+
#else
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#define STACK_FRAME_SIZE 24
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#endif
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+
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#if defined(CONFIG_PPC64_ELF_ABI_V2) && !defined(CONFIG_PPC_KERNEL_PCREL)
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+
#define PPC64_TOC_SAVE_AND_UPDATE \
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+
" std 2, 24(1)\n" \
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+
" bcl 20, 31, 1f\n" \
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" 1: mflr 12\n" \
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+
" ld 2, (99f - 1b)(12)\n"
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#define PPC64_TOC_RESTORE \
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" ld 2, 24(1)\n"
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+
#define PPC64_TOC \
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" 99: .quad .TOC.@tocbase\n"
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+
#else
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#define PPC64_TOC_SAVE_AND_UPDATE ""
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#define PPC64_TOC_RESTORE ""
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#define PPC64_TOC ""
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+
#endif
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+
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+
#ifdef CONFIG_PPC_FTRACE_OUT_OF_LINE
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+
#define PPC_FTRACE_RESTORE_LR \
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PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
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+
" mtlr 0\n"
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+
#define PPC_FTRACE_RET \
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" blr\n"
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+
#else
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+
#define PPC_FTRACE_RESTORE_LR \
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PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
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+
" mtctr 0\n"
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+
#define PPC_FTRACE_RET \
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" mtlr 0\n" \
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+
" bctr\n"
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+
#endif
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+
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+
asm (
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+
" .pushsection .text, \"ax\", @progbits\n"
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+
" .type my_tramp1, @function\n"
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+
" .globl my_tramp1\n"
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+
" my_tramp1:\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mflr 0\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_SIZE)"(1)\n"
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+
PPC64_TOC_SAVE_AND_UPDATE
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+
" bl my_direct_func1\n"
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+
PPC64_TOC_RESTORE
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+
" addi 1, 1, "__stringify(STACK_FRAME_SIZE)"\n"
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+
PPC_FTRACE_RESTORE_LR
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+
" addi 1, 1, "__stringify(STACK_FRAME_MIN_SIZE)"\n"
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_FTRACE_RET
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+
" .size my_tramp1, .-my_tramp1\n"
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+
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+
" .type my_tramp2, @function\n"
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+
" .globl my_tramp2\n"
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+
" my_tramp2:\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mflr 0\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_SIZE)"(1)\n"
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+
PPC64_TOC_SAVE_AND_UPDATE
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+
" bl my_direct_func2\n"
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+
PPC64_TOC_RESTORE
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+
" addi 1, 1, "__stringify(STACK_FRAME_SIZE)"\n"
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+
PPC_FTRACE_RESTORE_LR
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+
" addi 1, 1, "__stringify(STACK_FRAME_MIN_SIZE)"\n"
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_FTRACE_RET
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+
PPC64_TOC
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+
" .size my_tramp2, .-my_tramp2\n"
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+
" .popsection\n"
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+
);
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+
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+
#endif /* CONFIG_PPC */
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static struct ftrace_ops direct;
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+100
-1
samples/ftrace/ftrace-direct-multi-modify.c
+100
-1
samples/ftrace/ftrace-direct-multi-modify.c
···
2
2
#include <linux/module.h>
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#include <linux/kthread.h>
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#include <linux/ftrace.h>
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-
#ifndef CONFIG_ARM64
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+
#if !defined(CONFIG_ARM64) && !defined(CONFIG_PPC32)
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#include <asm/asm-offsets.h>
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#endif
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8
···
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);
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#endif /* CONFIG_LOONGARCH */
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+
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+
#ifdef CONFIG_PPC
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#include <asm/ppc_asm.h>
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+
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#ifdef CONFIG_PPC64
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#define STACK_FRAME_SIZE 48
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+
#else
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+
#define STACK_FRAME_SIZE 24
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+
#endif
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+
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#if defined(CONFIG_PPC64_ELF_ABI_V2) && !defined(CONFIG_PPC_KERNEL_PCREL)
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+
#define PPC64_TOC_SAVE_AND_UPDATE \
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+
" std 2, 24(1)\n" \
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+
" bcl 20, 31, 1f\n" \
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+
" 1: mflr 12\n" \
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+
" ld 2, (99f - 1b)(12)\n"
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+
#define PPC64_TOC_RESTORE \
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+
" ld 2, 24(1)\n"
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+
#define PPC64_TOC \
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+
" 99: .quad .TOC.@tocbase\n"
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+
#else
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+
#define PPC64_TOC_SAVE_AND_UPDATE ""
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+
#define PPC64_TOC_RESTORE ""
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+
#define PPC64_TOC ""
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+
#endif
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+
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+
#ifdef CONFIG_PPC_FTRACE_OUT_OF_LINE
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#define PPC_FTRACE_RESTORE_LR \
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PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
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+
" mtlr 0\n"
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+
#define PPC_FTRACE_RET \
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+
" blr\n"
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+
#define PPC_FTRACE_RECOVER_IP \
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+
" lwz 8, 4(3)\n" \
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+
" li 9, 6\n" \
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+
" slw 8, 8, 9\n" \
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+
" sraw 8, 8, 9\n" \
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+
" add 3, 3, 8\n" \
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+
" addi 3, 3, 4\n"
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+
#else
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+
#define PPC_FTRACE_RESTORE_LR \
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PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
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+
" mtctr 0\n"
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+
#define PPC_FTRACE_RET \
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+
" mtlr 0\n" \
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" bctr\n"
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#define PPC_FTRACE_RECOVER_IP ""
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#endif
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+
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+
asm (
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+
" .pushsection .text, \"ax\", @progbits\n"
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+
" .type my_tramp1, @function\n"
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+
" .globl my_tramp1\n"
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+
" my_tramp1:\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mflr 0\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_SIZE)"(1)\n"
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+
PPC64_TOC_SAVE_AND_UPDATE
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PPC_STL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mr 3, 0\n"
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+
PPC_FTRACE_RECOVER_IP
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+
" bl my_direct_func1\n"
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+
PPC_LL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
PPC64_TOC_RESTORE
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+
" addi 1, 1, "__stringify(STACK_FRAME_SIZE)"\n"
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+
PPC_FTRACE_RESTORE_LR
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+
" addi 1, 1, "__stringify(STACK_FRAME_MIN_SIZE)"\n"
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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PPC_FTRACE_RET
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+
" .size my_tramp1, .-my_tramp1\n"
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+
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+
" .type my_tramp2, @function\n"
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+
" .globl my_tramp2\n"
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+
" my_tramp2:\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mflr 0\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_SIZE)"(1)\n"
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+
PPC64_TOC_SAVE_AND_UPDATE
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PPC_STL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mr 3, 0\n"
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+
PPC_FTRACE_RECOVER_IP
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+
" bl my_direct_func2\n"
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+
PPC_LL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
PPC64_TOC_RESTORE
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+
" addi 1, 1, "__stringify(STACK_FRAME_SIZE)"\n"
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+
PPC_FTRACE_RESTORE_LR
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+
" addi 1, 1, "__stringify(STACK_FRAME_MIN_SIZE)"\n"
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_FTRACE_RET
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+
PPC64_TOC
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+
" .size my_tramp2, .-my_tramp2\n"
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+
" .popsection\n"
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+
);
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+
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#endif /* CONFIG_PPC */
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static unsigned long my_tramp = (unsigned long)my_tramp1;
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static unsigned long tramps[2] = {
+78
-1
samples/ftrace/ftrace-direct-multi.c
+78
-1
samples/ftrace/ftrace-direct-multi.c
···
4
4
#include <linux/mm.h> /* for handle_mm_fault() */
5
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#include <linux/ftrace.h>
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#include <linux/sched/stat.h>
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#ifndef CONFIG_ARM64
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+
#if !defined(CONFIG_ARM64) && !defined(CONFIG_PPC32)
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#include <asm/asm-offsets.h>
9
9
#endif
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10
···
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);
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#endif /* CONFIG_LOONGARCH */
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+
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#ifdef CONFIG_PPC
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#include <asm/ppc_asm.h>
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+
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+
#ifdef CONFIG_PPC64
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+
#define STACK_FRAME_SIZE 48
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#else
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#define STACK_FRAME_SIZE 24
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#endif
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+
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#if defined(CONFIG_PPC64_ELF_ABI_V2) && !defined(CONFIG_PPC_KERNEL_PCREL)
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+
#define PPC64_TOC_SAVE_AND_UPDATE \
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+
" std 2, 24(1)\n" \
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+
" bcl 20, 31, 1f\n" \
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+
" 1: mflr 12\n" \
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+
" ld 2, (99f - 1b)(12)\n"
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+
#define PPC64_TOC_RESTORE \
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+
" ld 2, 24(1)\n"
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#define PPC64_TOC \
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" 99: .quad .TOC.@tocbase\n"
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+
#else
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+
#define PPC64_TOC_SAVE_AND_UPDATE ""
165
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#define PPC64_TOC_RESTORE ""
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#define PPC64_TOC ""
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+
#endif
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+
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+
#ifdef CONFIG_PPC_FTRACE_OUT_OF_LINE
170
+
#define PPC_FTRACE_RESTORE_LR \
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
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+
" mtlr 0\n"
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+
#define PPC_FTRACE_RET \
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+
" blr\n"
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+
#define PPC_FTRACE_RECOVER_IP \
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+
" lwz 8, 4(3)\n" \
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+
" li 9, 6\n" \
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+
" slw 8, 8, 9\n" \
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+
" sraw 8, 8, 9\n" \
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+
" add 3, 3, 8\n" \
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+
" addi 3, 3, 4\n"
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+
#else
183
+
#define PPC_FTRACE_RESTORE_LR \
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
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+
" mtctr 0\n"
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+
#define PPC_FTRACE_RET \
187
+
" mtlr 0\n" \
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+
" bctr\n"
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+
#define PPC_FTRACE_RECOVER_IP ""
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+
#endif
191
+
192
+
asm (
193
+
" .pushsection .text, \"ax\", @progbits\n"
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+
" .type my_tramp, @function\n"
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+
" .globl my_tramp\n"
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+
" my_tramp:\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_STLU" 1, -"__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mflr 0\n"
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+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
201
+
PPC_STLU" 1, -"__stringify(STACK_FRAME_SIZE)"(1)\n"
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+
PPC64_TOC_SAVE_AND_UPDATE
203
+
PPC_STL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
" mr 3, 0\n"
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+
PPC_FTRACE_RECOVER_IP
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+
" bl my_direct_func\n"
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+
PPC_LL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
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+
PPC64_TOC_RESTORE
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+
" addi 1, 1, "__stringify(STACK_FRAME_SIZE)"\n"
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+
PPC_FTRACE_RESTORE_LR
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+
" addi 1, 1, "__stringify(STACK_FRAME_MIN_SIZE)"\n"
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
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+
PPC_FTRACE_RET
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+
PPC64_TOC
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+
" .size my_tramp, .-my_tramp\n"
216
+
" .popsection\n"
217
+
);
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+
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+
#endif /* CONFIG_PPC */
143
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static struct ftrace_ops direct;
145
222
+82
-1
samples/ftrace/ftrace-direct-too.c
+82
-1
samples/ftrace/ftrace-direct-too.c
···
3
3
4
4
#include <linux/mm.h> /* for handle_mm_fault() */
5
5
#include <linux/ftrace.h>
6
-
#ifndef CONFIG_ARM64
6
+
#if !defined(CONFIG_ARM64) && !defined(CONFIG_PPC32)
7
7
#include <asm/asm-offsets.h>
8
8
#endif
9
9
···
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);
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#endif /* CONFIG_LOONGARCH */
155
+
156
+
#ifdef CONFIG_PPC
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+
#include <asm/ppc_asm.h>
158
+
159
+
#ifdef CONFIG_PPC64
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+
#define STACK_FRAME_SIZE 64
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+
#define STACK_FRAME_ARG1 32
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+
#define STACK_FRAME_ARG2 40
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+
#define STACK_FRAME_ARG3 48
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+
#define STACK_FRAME_ARG4 56
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+
#else
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+
#define STACK_FRAME_SIZE 32
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+
#define STACK_FRAME_ARG1 16
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+
#define STACK_FRAME_ARG2 20
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+
#define STACK_FRAME_ARG3 24
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+
#define STACK_FRAME_ARG4 28
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+
#endif
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+
173
+
#if defined(CONFIG_PPC64_ELF_ABI_V2) && !defined(CONFIG_PPC_KERNEL_PCREL)
174
+
#define PPC64_TOC_SAVE_AND_UPDATE \
175
+
" std 2, 24(1)\n" \
176
+
" bcl 20, 31, 1f\n" \
177
+
" 1: mflr 12\n" \
178
+
" ld 2, (99f - 1b)(12)\n"
179
+
#define PPC64_TOC_RESTORE \
180
+
" ld 2, 24(1)\n"
181
+
#define PPC64_TOC \
182
+
" 99: .quad .TOC.@tocbase\n"
183
+
#else
184
+
#define PPC64_TOC_SAVE_AND_UPDATE ""
185
+
#define PPC64_TOC_RESTORE ""
186
+
#define PPC64_TOC ""
187
+
#endif
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+
189
+
#ifdef CONFIG_PPC_FTRACE_OUT_OF_LINE
190
+
#define PPC_FTRACE_RESTORE_LR \
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
192
+
" mtlr 0\n"
193
+
#define PPC_FTRACE_RET \
194
+
" blr\n"
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+
#else
196
+
#define PPC_FTRACE_RESTORE_LR \
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+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
198
+
" mtctr 0\n"
199
+
#define PPC_FTRACE_RET \
200
+
" mtlr 0\n" \
201
+
" bctr\n"
202
+
#endif
203
+
204
+
asm (
205
+
" .pushsection .text, \"ax\", @progbits\n"
206
+
" .type my_tramp, @function\n"
207
+
" .globl my_tramp\n"
208
+
" my_tramp:\n"
209
+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
210
+
PPC_STLU" 1, -"__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
211
+
" mflr 0\n"
212
+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
213
+
PPC_STLU" 1, -"__stringify(STACK_FRAME_SIZE)"(1)\n"
214
+
PPC64_TOC_SAVE_AND_UPDATE
215
+
PPC_STL" 3, "__stringify(STACK_FRAME_ARG1)"(1)\n"
216
+
PPC_STL" 4, "__stringify(STACK_FRAME_ARG2)"(1)\n"
217
+
PPC_STL" 5, "__stringify(STACK_FRAME_ARG3)"(1)\n"
218
+
PPC_STL" 6, "__stringify(STACK_FRAME_ARG4)"(1)\n"
219
+
" bl my_direct_func\n"
220
+
PPC_LL" 6, "__stringify(STACK_FRAME_ARG4)"(1)\n"
221
+
PPC_LL" 5, "__stringify(STACK_FRAME_ARG3)"(1)\n"
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+
PPC_LL" 4, "__stringify(STACK_FRAME_ARG2)"(1)\n"
223
+
PPC_LL" 3, "__stringify(STACK_FRAME_ARG1)"(1)\n"
224
+
PPC64_TOC_RESTORE
225
+
" addi 1, 1, "__stringify(STACK_FRAME_SIZE)"\n"
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+
PPC_FTRACE_RESTORE_LR
227
+
" addi 1, 1, "__stringify(STACK_FRAME_MIN_SIZE)"\n"
228
+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
229
+
PPC_FTRACE_RET
230
+
PPC64_TOC
231
+
" .size my_tramp, .-my_tramp\n"
232
+
" .popsection\n"
233
+
);
234
+
235
+
#endif /* CONFIG_PPC */
155
236
156
237
static struct ftrace_ops direct;
157
238
+68
-1
samples/ftrace/ftrace-direct.c
+68
-1
samples/ftrace/ftrace-direct.c
···
3
3
4
4
#include <linux/sched.h> /* for wake_up_process() */
5
5
#include <linux/ftrace.h>
6
-
#ifndef CONFIG_ARM64
6
+
#if !defined(CONFIG_ARM64) && !defined(CONFIG_PPC32)
7
7
#include <asm/asm-offsets.h>
8
8
#endif
9
9
···
133
133
);
134
134
135
135
#endif /* CONFIG_LOONGARCH */
136
+
137
+
#ifdef CONFIG_PPC
138
+
#include <asm/ppc_asm.h>
139
+
140
+
#ifdef CONFIG_PPC64
141
+
#define STACK_FRAME_SIZE 48
142
+
#else
143
+
#define STACK_FRAME_SIZE 24
144
+
#endif
145
+
146
+
#if defined(CONFIG_PPC64_ELF_ABI_V2) && !defined(CONFIG_PPC_KERNEL_PCREL)
147
+
#define PPC64_TOC_SAVE_AND_UPDATE \
148
+
" std 2, 24(1)\n" \
149
+
" bcl 20, 31, 1f\n" \
150
+
" 1: mflr 12\n" \
151
+
" ld 2, (99f - 1b)(12)\n"
152
+
#define PPC64_TOC_RESTORE \
153
+
" ld 2, 24(1)\n"
154
+
#define PPC64_TOC \
155
+
" 99: .quad .TOC.@tocbase\n"
156
+
#else
157
+
#define PPC64_TOC_SAVE_AND_UPDATE ""
158
+
#define PPC64_TOC_RESTORE ""
159
+
#define PPC64_TOC ""
160
+
#endif
161
+
162
+
#ifdef CONFIG_PPC_FTRACE_OUT_OF_LINE
163
+
#define PPC_FTRACE_RESTORE_LR \
164
+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
165
+
" mtlr 0\n"
166
+
#define PPC_FTRACE_RET \
167
+
" blr\n"
168
+
#else
169
+
#define PPC_FTRACE_RESTORE_LR \
170
+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n" \
171
+
" mtctr 0\n"
172
+
#define PPC_FTRACE_RET \
173
+
" mtlr 0\n" \
174
+
" bctr\n"
175
+
#endif
176
+
177
+
asm (
178
+
" .pushsection .text, \"ax\", @progbits\n"
179
+
" .type my_tramp, @function\n"
180
+
" .globl my_tramp\n"
181
+
" my_tramp:\n"
182
+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
183
+
PPC_STLU" 1, -"__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
184
+
" mflr 0\n"
185
+
PPC_STL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
186
+
PPC_STLU" 1, -"__stringify(STACK_FRAME_SIZE)"(1)\n"
187
+
PPC64_TOC_SAVE_AND_UPDATE
188
+
PPC_STL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
189
+
" bl my_direct_func\n"
190
+
PPC_LL" 3, "__stringify(STACK_FRAME_MIN_SIZE)"(1)\n"
191
+
PPC64_TOC_RESTORE
192
+
" addi 1, 1, "__stringify(STACK_FRAME_SIZE)"\n"
193
+
PPC_FTRACE_RESTORE_LR
194
+
" addi 1, 1, "__stringify(STACK_FRAME_MIN_SIZE)"\n"
195
+
PPC_LL" 0, "__stringify(PPC_LR_STKOFF)"(1)\n"
196
+
PPC_FTRACE_RET
197
+
PPC64_TOC
198
+
" .size my_tramp, .-my_tramp\n"
199
+
" .popsection\n"
200
+
);
201
+
202
+
#endif /* CONFIG_PPC */
136
203
137
204
static struct ftrace_ops direct;
138
205