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Commit c10302ef authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/bpf,jit: BPF Just In Time compiler for s390 



The s390 implementation of the JIT compiler for packet filter speedup.

Reviewed-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 6f0f9b6b

arch/s390/Kbuild

+1 −0
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@@ -5,3 +5,4 @@ obj-$(CONFIG_CRYPTO_HW) += crypto/ 
obj-$(CONFIG_S390_HYPFS_FS)	+= hypfs/

obj-$(CONFIG_S390_HYPFS_FS)	+= hypfs/

obj-$(CONFIG_APPLDATA_BASE)	+= appldata/

obj-$(CONFIG_APPLDATA_BASE)	+= appldata/

obj-$(CONFIG_MATHEMU)		+= math-emu/

obj-$(CONFIG_MATHEMU)		+= math-emu/

obj-y				+= net/

arch/s390/Kconfig

+1 −0
Original line number Original line Diff line number Diff line
@@ -84,6 +84,7 @@ config S390 
	select HAVE_KERNEL_XZ

	select HAVE_KERNEL_XZ

	select HAVE_ARCH_MUTEX_CPU_RELAX

	select HAVE_ARCH_MUTEX_CPU_RELAX

	select HAVE_ARCH_JUMP_LABEL if !MARCH_G5

	select HAVE_ARCH_JUMP_LABEL if !MARCH_G5

	select HAVE_BPF_JIT if 64BIT && PACK_STACK

	select ARCH_SAVE_PAGE_KEYS if HIBERNATION

	select ARCH_SAVE_PAGE_KEYS if HIBERNATION

	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE

	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE

	select HAVE_MEMBLOCK

	select HAVE_MEMBLOCK

arch/s390/include/asm/processor.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -140,6 +140,7 @@ extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); 
extern unsigned long thread_saved_pc(struct task_struct *t);

extern unsigned long thread_saved_pc(struct task_struct *t);





extern void show_code(struct pt_regs *regs);

extern void show_code(struct pt_regs *regs);

extern void print_fn_code(unsigned char *code, unsigned long len);





unsigned long get_wchan(struct task_struct *p);

unsigned long get_wchan(struct task_struct *p);

#define task_pt_regs(tsk) ((struct pt_regs *) \

#define task_pt_regs(tsk) ((struct pt_regs *) \

arch/s390/kernel/dis.c

+23 −0
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@@ -1601,3 +1601,26 @@ void show_code(struct pt_regs *regs) 
	}

	}

	printk("\n");

	printk("\n");

}

}



void print_fn_code(unsigned char *code, unsigned long len)

{

	char buffer[64], *ptr;

	int opsize, i;



	while (len) {

		ptr = buffer;

		opsize = insn_length(*code);

		ptr += sprintf(ptr, "%p: ", code);

		for (i = 0; i < opsize; i++)

			ptr += sprintf(ptr, "%02x", code[i]);

		*ptr++ = '\t';

		if (i < 4)

			*ptr++ = '\t';

		ptr += print_insn(ptr, code, (unsigned long) code);

		*ptr++ = '\n';

		*ptr++ = 0;

		printk(buffer);

		code += opsize;

		len -= opsize;

	}

}

arch/s390/net/Makefile

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#

# Arch-specific network modules

#

obj-$(CONFIG_BPF_JIT) += bpf_jit.o bpf_jit_comp.o