diff options
Diffstat (limited to 'arch/s390/oprofile')
| -rw-r--r-- | arch/s390/oprofile/Makefile | 10 | ||||
| -rw-r--r-- | arch/s390/oprofile/init.c | 43 |
2 files changed, 53 insertions, 0 deletions
diff --git a/arch/s390/oprofile/Makefile b/arch/s390/oprofile/Makefile new file mode 100644 index 000000000..36261f9d3 --- /dev/null +++ b/arch/s390/oprofile/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_OPROFILE) += oprofile.o + +DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \ + oprof.o cpu_buffer.o buffer_sync.o \ + event_buffer.o oprofile_files.o \ + oprofilefs.o oprofile_stats.o \ + timer_int.o ) + +oprofile-y := $(DRIVER_OBJS) init.o diff --git a/arch/s390/oprofile/init.c b/arch/s390/oprofile/init.c new file mode 100644 index 000000000..43d9525c3 --- /dev/null +++ b/arch/s390/oprofile/init.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * S390 Version + * Copyright IBM Corp. 2002, 2011 + * Author(s): Thomas Spatzier (tspat@de.ibm.com) + * Author(s): Mahesh Salgaonkar (mahesh@linux.vnet.ibm.com) + * Author(s): Heinz Graalfs (graalfs@linux.vnet.ibm.com) + * Author(s): Andreas Krebbel (krebbel@linux.vnet.ibm.com) + * + * @remark Copyright 2002-2011 OProfile authors + */ + +#include <linux/oprofile.h> +#include <linux/init.h> +#include <asm/processor.h> + +static int __s390_backtrace(void *data, unsigned long address, int reliable) +{ + unsigned int *depth = data; + + if (*depth == 0) + return 1; + (*depth)--; + oprofile_add_trace(address); + return 0; +} + +static void s390_backtrace(struct pt_regs *regs, unsigned int depth) +{ + if (user_mode(regs)) + return; + dump_trace(__s390_backtrace, &depth, NULL, regs->gprs[15]); +} + +int __init oprofile_arch_init(struct oprofile_operations *ops) +{ + ops->backtrace = s390_backtrace; + return 0; +} + +void oprofile_arch_exit(void) +{ +} |