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507cff242a
This is a slight rework of the s390_zcrypt_req and s390_zcrypt_rep trace event: - the psmid has been added to the s390_zcrypt_rep - "dev" renamed to "card" - "domain" renamed to "dom" The motivation of these changes is to make these traces more aligned to new upcoming traces for AP bus related trace events. Additionally the psmid is needed to match the reply (and thus indirect the request) to AP bus related trace events where only the psmid is unique identifying AP messages. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Anthony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
128 lines
4.3 KiB
C
128 lines
4.3 KiB
C
/* 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. 2016,2025
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* Author(s): Harald Freudenberger <freude@de.ibm.com>
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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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* @card: 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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* @psmid: Unique id identifying this request/reply.
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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 card, u16 dom, u64 psmid),
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TP_ARGS(ptr, fc, rc, card, dom, psmid),
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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, card)
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__field(u16, dom)
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__field(u64, psmid)),
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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->card = card;
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__entry->dom = dom;
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__entry->psmid = psmid;),
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TP_printk("ptr=%p fc=0x%04x rc=%d card=%u dom=%u psmid=0x%016lx",
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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->card,
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(unsigned short)__entry->dom,
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(unsigned long)__entry->psmid)
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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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