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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?KBln7GDjfYI3kUHkCvIy0mVlfdCLDoe0Dy+A768OcytW0OBg6iswqZBvEiSe?= =?us-ascii?Q?NGCWlqSTin03n5Rjrou6OXAGP0AsCZn7eRic0KIjRPzWEK7N0JE8HnmGe3Cy?= =?us-ascii?Q?E9suIqJFu7urZu3wvLdmiFn2pZNt0NmGUSzSEF2tRgca/mVmX3PvREuORhWR?= =?us-ascii?Q?VnBOrl8iu8rfSam5q4a++9R/KJbmuA7uxaIKP2mMC2dM3ktxeM8OPy/GKKTC?= =?us-ascii?Q?3X0BF21+azg3mesnffYCVcNdVxDPkYGMsvBgZ6rCOi6AfCozPrgzEyihb5i9?= =?us-ascii?Q?i/SFZKQdymjcYclnKb10p7D4JBP86p8leyXC6gI8TN2CLWW/u/ZHjFON0yJE?= =?us-ascii?Q?sgS8zFjhR3SCas/wX+mv+biAvOEYPWtR0V1YCPgJ0S16H6VSrFFnHf4ND2IU?= =?us-ascii?Q?1k6MskFuFfPncuVdbKsaTeIyRVGcG+RMjPhcf1LB6g/6Y1B1O1bBIUGtskWj?= =?us-ascii?Q?43ZbMAeexMyhxsN9iabBXzZEHw9l5uxFqH9MhdZk2d7/XZY67T6mMI5vUnvU?= =?us-ascii?Q?m4H7qPiI4nOcFj6Ne1TQzyHVjx8kN5tLOMnWyXlaf6lYtwtS6PSdEqQFU9rq?= =?us-ascii?Q?czZREzR/z/L5QkroJ9suEjtGfXHiGggJBOYmfte5Py9wbewUuM07vyA8IzjT?= =?us-ascii?Q?Vd2lT9GNvHLpWQx4SZiSYBP4xBO9jLdGhPtpgJ0Hq3rkOqJQE49Itm2l4kng?= =?us-ascii?Q?EHHXMpVF0KBEwPKdwmpc9EhE1JGQja6rIxU0m8NfKIKEr1ArrrbtD11OLBGr?= =?us-ascii?Q?wKSn41fqCuRGVh8l33JtFoQpzW1hKlN/EDq4Im3r+JP60oUgtQdvAW2v//QG?= =?us-ascii?Q?zmtsWjPKWmGzQgptSf7ECbIYRsjsQWFMTVLNsfiypgfpl0fhO8p3y/Tk950O?= =?us-ascii?Q?3d9PgNalJpP1FsWqTGfHf+irCw5ezEPDRS4niQ/XySov84/VZ/tX3ExFpT3p?= =?us-ascii?Q?uV0fBb1qbMGREhpi9tSlLBgxwypvGv5wRGI0Me4aNxlwtVFuxTI3z7wcuTI0?= =?us-ascii?Q?V+XjnpsPSC71tEb9UOGS7MJaPKWgS11rhiOtMzOuwwHIcBPEFsUp52iZ53cB?= =?us-ascii?Q?mXHJhnWSgn98dgnO8WTAx9IJ4ilf1s9BW6NlsMS3yIdKxGmYsSUQAQWNnb4b?= =?us-ascii?Q?rY/k7pvrOxtKDCuKyhw59zNihCh2CalwJT3vbQA4x8yg7J8HdeMbdEq0j8TI?= =?us-ascii?Q?AAUb5e5o09m3mIwUO+4Sxri+G6rYDYjRE/OmHf420nxEGIavOQNQXJ25PlZR?= =?us-ascii?Q?JEOMU18OA7GNl5gfHw4lgj1G0y1sKvX/P6cDUXkuSTjEHQpDg+ahy4SIBM1i?= =?us-ascii?Q?pAZXZWxMKFuwqKcCekFqfHqGV44OxSo4i0cvtvMidN6yl9CwYMhtyHmYZhMP?= =?us-ascii?Q?5ra17yagtlHz1njEAL7VVAqv9zG4QtriZ0P7qE5fA0tQvoBfpuTfqkhbGXVY?= =?us-ascii?Q?7EUHsWn8jLI4WXcDDy9tlzUYjRLaqWvOHQVYYtYFfthdflQ9oJ8J2Mf8X3A4?= =?us-ascii?Q?ZxL7fzzp/vLMmoJtD5G4Gz9PjMU6yulyDa6omKM7ahXYRL81/ufqCPbqZzWV?= =?us-ascii?Q?qFUw3xhh0/kedw8kpFpXXbRzgojMpSJpB6/B2JW6sibyuXrL/HKxKBEFxU/4?= =?us-ascii?Q?SA=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 6029faed-0e7f-40f0-c36b-08dad42cfa8a X-MS-Exchange-CrossTenant-AuthSource: MWHPR1101MB2126.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Dec 2022 06:18:08.6986 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: JrhebBvT/pBsjr8IPI3dhy4a2ru9oGU2mYQiduk8vMLqi62mEK6ow/4mwTtXhDZ0XQ4G/NntgxZ+FW73hMyhSl93bYGALG68wGPBE5udO9g= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR11MB5560 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ira.weiny@ wrote: > From: Ira Weiny > > CXL rev 3.0 section 8.2.9.2.1.1 defines the General Media Event Record. > > Determine if the event read is a general media record and if so trace > the record as a General Media Event Record. > > Reviewed-by: Steven Rostedt (Google) > Reviewed-by: Jonathan Cameron > Signed-off-by: Ira Weiny > > --- > Changes from V1: > Jonathan > fix spec references for CXL rev 3.0 > Make flags all caps > > Changes from RFC v2: > Output DPA flags as a single field > Ensure names of fields match what TP_print outputs > Steven > prefix TRACE_EVENT with 'cxl_' > Jonathan > Remove Reserved field > > Changes from RFC: > Add reserved byte array > Use common CXL event header record macros > Jonathan > Use unaligned_le{24,16} for unaligned fields > Don't use the inverse of phy addr mask > Dave Jiang > s/cxl_gen_media_event/general_media > s/cxl_evt_gen_media/cxl_event_gen_media > --- > drivers/cxl/core/mbox.c | 40 ++++++++++-- > drivers/cxl/cxlmem.h | 19 ++++++ > include/trace/events/cxl.h | 124 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 179 insertions(+), 4 deletions(-) > > diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c > index 076a3df0ba38..20191fe55bba 100644 > --- a/drivers/cxl/core/mbox.c > +++ b/drivers/cxl/core/mbox.c > @@ -709,6 +709,38 @@ int cxl_enumerate_cmds(struct cxl_dev_state *cxlds) > } > EXPORT_SYMBOL_NS_GPL(cxl_enumerate_cmds, CXL); > > +/* > + * General Media Event Record > + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 > + */ > +static const uuid_t gen_media_event_uuid = > + UUID_INIT(0xfbcd0a77, 0xc260, 0x417f, > + 0x85, 0xa9, 0x08, 0x8b, 0x16, 0x21, 0xeb, 0xa6); > + Move this next to the other UUID_INITs in cxlmem.h. > +static bool cxl_event_tracing_enabled(void) > +{ > + return trace_cxl_generic_event_enabled() || > + trace_cxl_general_media_enabled(); > +} ...and now the micro-optimization gets more complicated. The mailbox command is an uncached PCI mmio memcpy(), the incremental cycles this enabled check is saving would be difficult to spot in a profile. So unless it has a worthwhile perf-profile impact I prefer the simplicity of the straight through code. > + > +static void cxl_trace_event_record(const char *dev_name, > + enum cxl_event_log_type type, > + struct cxl_event_record_raw *record) > +{ > + uuid_t *id = &record->hdr.id; > + > + if (uuid_equal(id, &gen_media_event_uuid)) { > + struct cxl_event_gen_media *rec = > + (struct cxl_event_gen_media *)record; > + > + trace_cxl_general_media(dev_name, type, rec); > + return; > + } > + > + /* For unknown record types print just the header */ > + trace_cxl_generic_event(dev_name, type, record); > +} > + > static int cxl_clear_event_record(struct cxl_dev_state *cxlds, > enum cxl_event_log_type log, > struct cxl_get_event_payload *get_pl, > @@ -772,11 +804,11 @@ static void cxl_mem_get_records_log(struct cxl_dev_state *cxlds, > if (nr_rec > 0) { > int i; > > - if (trace_cxl_generic_event_enabled()) { > + if (cxl_event_tracing_enabled()) { > for (i = 0; i < nr_rec; i++) > - trace_cxl_generic_event(dev_name(cxlds->dev), > - type, > - &payload->records[i]); > + cxl_trace_event_record(dev_name(cxlds->dev), > + type, > + &payload->records[i]); Changing the same lines multiple times in the same series is sometihng that sets off my complexity alarm bells. > } > > rc = cxl_clear_event_record(cxlds, type, payload, nr_rec); > diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h > index 1ae9962c5a06..10696debefa8 100644 > --- a/drivers/cxl/cxlmem.h > +++ b/drivers/cxl/cxlmem.h > @@ -410,6 +410,25 @@ struct cxl_mbox_clear_event_payload { > __le16 handle[CXL_CLEAR_EVENT_MAX_HANDLES]; > }; > > +/* > + * General Media Event Record > + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 > + */ > +#define CXL_EVENT_GEN_MED_COMP_ID_SIZE 0x10 > +struct cxl_event_gen_media { > + struct cxl_event_record_hdr hdr; > + __le64 phys_addr; > + u8 descriptor; > + u8 type; > + u8 transaction_type; > + u8 validity_flags[2]; > + u8 channel; > + u8 rank; > + u8 device[3]; > + u8 component_id[CXL_EVENT_GEN_MED_COMP_ID_SIZE]; > + u8 reserved[0x2e]; s/0x2e/46/ > +} __packed; > + > struct cxl_mbox_get_partition_info { > __le64 active_volatile_cap; > __le64 active_persistent_cap; > diff --git a/include/trace/events/cxl.h b/include/trace/events/cxl.h > index c03a1a894af8..a4d6bd64e9bc 100644 > --- a/include/trace/events/cxl.h > +++ b/include/trace/events/cxl.h > @@ -118,6 +118,130 @@ TRACE_EVENT(cxl_generic_event, > __print_hex(__entry->data, CXL_EVENT_RECORD_DATA_LENGTH)) > ); > > +/* > + * Physical Address field masks > + * > + * General Media Event Record > + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 > + * > + * DRAM Event Record > + * CXL rev 3.0 section 8.2.9.2.1.2; Table 8-44 > + */ > +#define CXL_DPA_FLAGS_MASK 0x3F > +#define CXL_DPA_MASK (~CXL_DPA_FLAGS_MASK) > + > +#define CXL_DPA_VOLATILE BIT(0) > +#define CXL_DPA_NOT_REPAIRABLE BIT(1) > +#define show_dpa_flags(flags) __print_flags(flags, "|", \ > + { CXL_DPA_VOLATILE, "VOLATILE" }, \ > + { CXL_DPA_NOT_REPAIRABLE, "NOT_REPAIRABLE" } \ > +) > + > +/* > + * General Media Event Record - GMER > + * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 > + */ > +#define CXL_GMER_EVT_DESC_UNCORECTABLE_EVENT BIT(0) > +#define CXL_GMER_EVT_DESC_THRESHOLD_EVENT BIT(1) > +#define CXL_GMER_EVT_DESC_POISON_LIST_OVERFLOW BIT(2) > +#define show_event_desc_flags(flags) __print_flags(flags, "|", \ > + { CXL_GMER_EVT_DESC_UNCORECTABLE_EVENT, "UNCORRECTABLE_EVENT" }, \ > + { CXL_GMER_EVT_DESC_THRESHOLD_EVENT, "THRESHOLD_EVENT" }, \ > + { CXL_GMER_EVT_DESC_POISON_LIST_OVERFLOW, "POISON_LIST_OVERFLOW" } \ > +) > + > +#define CXL_GMER_MEM_EVT_TYPE_ECC_ERROR 0x00 > +#define CXL_GMER_MEM_EVT_TYPE_INV_ADDR 0x01 > +#define CXL_GMER_MEM_EVT_TYPE_DATA_PATH_ERROR 0x02 > +#define show_mem_event_type(type) __print_symbolic(type, \ > + { CXL_GMER_MEM_EVT_TYPE_ECC_ERROR, "ECC Error" }, \ > + { CXL_GMER_MEM_EVT_TYPE_INV_ADDR, "Invalid Address" }, \ > + { CXL_GMER_MEM_EVT_TYPE_DATA_PATH_ERROR, "Data Path Error" } \ > +) > + > +#define CXL_GMER_TRANS_UNKNOWN 0x00 > +#define CXL_GMER_TRANS_HOST_READ 0x01 > +#define CXL_GMER_TRANS_HOST_WRITE 0x02 > +#define CXL_GMER_TRANS_HOST_SCAN_MEDIA 0x03 > +#define CXL_GMER_TRANS_HOST_INJECT_POISON 0x04 > +#define CXL_GMER_TRANS_INTERNAL_MEDIA_SCRUB 0x05 > +#define CXL_GMER_TRANS_INTERNAL_MEDIA_MANAGEMENT 0x06 > +#define show_trans_type(type) __print_symbolic(type, \ > + { CXL_GMER_TRANS_UNKNOWN, "Unknown" }, \ > + { CXL_GMER_TRANS_HOST_READ, "Host Read" }, \ > + { CXL_GMER_TRANS_HOST_WRITE, "Host Write" }, \ > + { CXL_GMER_TRANS_HOST_SCAN_MEDIA, "Host Scan Media" }, \ > + { CXL_GMER_TRANS_HOST_INJECT_POISON, "Host Inject Poison" }, \ > + { CXL_GMER_TRANS_INTERNAL_MEDIA_SCRUB, "Internal Media Scrub" }, \ > + { CXL_GMER_TRANS_INTERNAL_MEDIA_MANAGEMENT, "Internal Media Management" } \ > +) > + > +#define CXL_GMER_VALID_CHANNEL BIT(0) > +#define CXL_GMER_VALID_RANK BIT(1) > +#define CXL_GMER_VALID_DEVICE BIT(2) > +#define CXL_GMER_VALID_COMPONENT BIT(3) > +#define show_valid_flags(flags) __print_flags(flags, "|", \ > + { CXL_GMER_VALID_CHANNEL, "CHANNEL" }, \ > + { CXL_GMER_VALID_RANK, "RANK" }, \ > + { CXL_GMER_VALID_DEVICE, "DEVICE" }, \ > + { CXL_GMER_VALID_COMPONENT, "COMPONENT" } \ > +) > + > +TRACE_EVENT(cxl_general_media, > + > + TP_PROTO(const char *dev_name, enum cxl_event_log_type log, > + struct cxl_event_gen_media *rec), > + > + TP_ARGS(dev_name, log, rec), > + > + TP_STRUCT__entry( > + CXL_EVT_TP_entry > + /* General Media */ > + __field(u64, dpa) > + __field(u8, descriptor) > + __field(u8, type) > + __field(u8, transaction_type) > + __field(u8, channel) > + __field(u32, device) > + __array(u8, comp_id, CXL_EVENT_GEN_MED_COMP_ID_SIZE) > + __field(u16, validity_flags) > + /* Following are out of order to pack trace record */ > + __field(u8, rank) > + __field(u8, dpa_flags) > + ), > + > + TP_fast_assign( > + CXL_EVT_TP_fast_assign(dev_name, log, rec->hdr); > + > + /* General Media */ > + __entry->dpa = le64_to_cpu(rec->phys_addr); > + __entry->dpa_flags = __entry->dpa & CXL_DPA_FLAGS_MASK; > + /* Mask after flags have been parsed */ > + __entry->dpa &= CXL_DPA_MASK; > + __entry->descriptor = rec->descriptor; > + __entry->type = rec->type; > + __entry->transaction_type = rec->transaction_type; > + __entry->channel = rec->channel; > + __entry->rank = rec->rank; > + __entry->device = get_unaligned_le24(rec->device); > + memcpy(__entry->comp_id, &rec->component_id, > + CXL_EVENT_GEN_MED_COMP_ID_SIZE); > + __entry->validity_flags = get_unaligned_le16(&rec->validity_flags); > + ), > + > + CXL_EVT_TP_printk("dpa=%llx dpa_flags='%s' " \ > + "descriptor='%s' type='%s' transaction_type='%s' channel=%u rank=%u " \ > + "device=%x comp_id=%s validity_flags='%s'", > + __entry->dpa, show_dpa_flags(__entry->dpa_flags), > + show_event_desc_flags(__entry->descriptor), > + show_mem_event_type(__entry->type), > + show_trans_type(__entry->transaction_type), > + __entry->channel, __entry->rank, __entry->device, > + __print_hex(__entry->comp_id, CXL_EVENT_GEN_MED_COMP_ID_SIZE), > + show_valid_flags(__entry->validity_flags) > + ) > +); > + > #endif /* _CXL_TRACE_EVENTS_H */ > > /* This part must be outside protection */ > -- > 2.37.2 >