/* SPDX-License-Identifier: GPL-2.0 */ /* * Tracepoint definitions for the s390 zcrypt device driver * * Copyright IBM Corp. 2016 * Author(s): Harald Freudenberger <freude@de.ibm.com> * * Currently there are two tracepoint events defined here. * An s390_zcrypt_req request event occurs as soon as the request is * recognized by the zcrypt ioctl function. This event may act as some kind * of request-processing-starts-now indication. * As late as possible within the zcrypt ioctl function there occurs the * s390_zcrypt_rep event which may act as the point in time where the * request has been processed by the kernel and the result is about to be * transferred back to userspace. * The glue which binds together request and reply event is the ptr * parameter, which is the local buffer address where the request from * userspace has been stored by the ioctl function. * * The main purpose of this zcrypt tracepoint api is to get some data for * performance measurements together with information about on which card * and queue the request has been processed. It is not an ffdc interface as * there is already code in the zcrypt device driver to serve the s390 * debug feature interface. */ #undef TRACE_SYSTEM #define TRACE_SYSTEM s390 #if !defined(_TRACE_S390_ZCRYPT_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_S390_ZCRYPT_H #include <linux/tracepoint.h> #define TP_ICARSAMODEXPO 0x0001 #define TP_ICARSACRT 0x0002 #define TB_ZSECSENDCPRB 0x0003 #define TP_ZSENDEP11CPRB 0x0004 #define TP_HWRNGCPRB 0x0005 #define show_zcrypt_tp_type(type) \ __print_symbolic(type, \ { TP_ICARSAMODEXPO, "ICARSAMODEXPO" }, \ { TP_ICARSACRT, "ICARSACRT" }, \ { TB_ZSECSENDCPRB, "ZSECSENDCPRB" }, \ { TP_ZSENDEP11CPRB, "ZSENDEP11CPRB" }, \ { TP_HWRNGCPRB, "HWRNGCPRB" }) /** * trace_s390_zcrypt_req - zcrypt request tracepoint function * @ptr: Address of the local buffer where the request from userspace * is stored. Can be used as a unique id to relate together * request and reply. * @type: One of the TP_ defines above. * * Called when a request from userspace is recognised within the ioctl * function of the zcrypt device driver and may act as an entry * timestamp. */ TRACE_EVENT(s390_zcrypt_req, TP_PROTO(void *ptr, u32 type), TP_ARGS(ptr, type), TP_STRUCT__entry( __field(void *, ptr) __field(u32, type)), TP_fast_assign( __entry->ptr = ptr; __entry->type = type;), TP_printk("ptr=%p type=%s", __entry->ptr, show_zcrypt_tp_type(__entry->type)) ); /** * trace_s390_zcrypt_rep - zcrypt reply tracepoint function * @ptr: Address of the local buffer where the request from userspace * is stored. Can be used as a unique id to match together * request and reply. * @fc: Function code. * @rc: The bare returncode as returned by the device driver ioctl * function. * @dev: The adapter nr where this request was actually processed. * @dom: Domain id of the device where this request was processed. * * Called upon recognising the reply from the crypto adapter. This * message may act as the exit timestamp for the request but also * carries some info about on which adapter the request was processed * and the returncode from the device driver. */ TRACE_EVENT(s390_zcrypt_rep, TP_PROTO(void *ptr, u32 fc, u32 rc, u16 dev, u16 dom), TP_ARGS(ptr, fc, rc, dev, dom), TP_STRUCT__entry( __field(void *, ptr) __field(u32, fc) __field(u32, rc) __field(u16, device) __field(u16, domain)), TP_fast_assign( __entry->ptr = ptr; __entry->fc = fc; __entry->rc = rc; __entry->device = dev; __entry->domain = dom;), TP_printk("ptr=%p fc=0x%04x rc=%d dev=0x%02hx domain=0x%04hx", __entry->ptr, (unsigned int) __entry->fc, (int) __entry->rc, (unsigned short) __entry->device, (unsigned short) __entry->domain) ); #endif /* _TRACE_S390_ZCRYPT_H */ /* This part must be outside protection */ #undef TRACE_INCLUDE_PATH #undef TRACE_INCLUDE_FILE #define TRACE_INCLUDE_PATH asm/trace #define TRACE_INCLUDE_FILE zcrypt #include <trace/define_trace.h>