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