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([fe80::5c1b:f14a:ef14:121e]) by SJ2PR11MB8450.namprd11.prod.outlook.com ([fe80::5c1b:f14a:ef14:121e%4]) with mapi id 15.20.8377.009; Thu, 23 Jan 2025 19:27:51 +0000 Message-ID: <1af7bdef-0602-4f1f-aaca-2e68a5b94685@intel.com> Date: Thu, 23 Jan 2025 11:27:49 -0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/3] drm/xe: Drop duplicated information about GT tile in devcoredump To: "Souza, Jose" , "intel-xe@lists.freedesktop.org" CC: "De Marchi, Lucas" References: <20250123180320.66198-1-jose.souza@intel.com> <20250123180320.66198-4-jose.souza@intel.com> <09e5ad52-be12-4d39-9b64-ca75b4851307@intel.com> <124780756da7b9546d16158659a562408a23497e.camel@intel.com> <75d315bc086d8382c6cb89a65b1be0b65547e0a1.camel@intel.com> Content-Language: en-GB From: John Harrison In-Reply-To: <75d315bc086d8382c6cb89a65b1be0b65547e0a1.camel@intel.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: MW3PR05CA0019.namprd05.prod.outlook.com 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X-MS-Exchange-CrossTenant-AuthSource: SJ2PR11MB8450.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jan 2025 19:27:50.9643 (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: Cbn1dWWTxvxgoZ+n5wEPAmBCnoIqVM1ekeRTY11Xc/WQDb1L5ub4uAKoPHi0BM5c79i1MsQmv6QcB/sa4OQ1O+rMGPtiRPjSjs9LB6YLQn8= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR11MB8129 X-OriginatorOrg: intel.com X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On 1/23/2025 10:56, Souza, Jose wrote: > On Thu, 2025-01-23 at 10:30 -0800, John Harrison wrote: >> On 1/23/2025 10:24, Souza, Jose wrote: >>> On Thu, 2025-01-23 at 10:18 -0800, John Harrison wrote: >>>> On 1/23/2025 09:59, José Roberto de Souza wrote: >>>>> The GT tile is already available but was added again in commit >>>>> c28fd6c358db ("drm/xe/devcoredump: Improve section headings and add tile info"), >>>>> so here deleting it. >>>>> >>>>> Here a devcoredump example with the duplicated information: >>>>> >>>>> **** Xe Device Coredump **** >>>>> Reason: Timedout job - seqno=4294967170, lrc_seqno=4294967170, guc_id=13, flags=0x0 >>>>> kernel: 6.13.0-zeh-xe+ >>>>> module: xe >>>>> Snapshot time: 1737573530.243521319 >>>>> Uptime: 2588.041930284 >>>>> Process: deqp-vk [8850] >>>>> PCI ID: 0x64a0 >>>>> PCI revision: 0x04 >>>>> GT id: 0 >>>>> Tile: 0 >>>>> Type: main >>>>> IP ver: 20.4.4 >>>>> CS reference clock: 19200000 >>>>> GT id: 1 >>>>> Tile: 0 >>>>> Type: media >>>>> IP ver: 20.0.4 >>>>> CS reference clock: 19200000 >>>> This is an overview of all GTs/tiles in the device within the global >>>> section. >>>> >>>>> **** GT #0 **** >>>> This is a section header telling you that everything which follows is >>>> inside GT0. >>>> >>>> It is not duplicated information. And if you remove it then you now have >>>> the information of all GTs back to back with no indication of which GT >>>> they actually belong to. >>> Can't you get this information from Name + class + instance? if not that should be placed in one of the sections below. >> No. I was trying to do that originally and determined it was impossible >> to do reliably for all current and future platforms. Hence the section >> header was added. >> >> It is also much, much, much better to be explicit about debug >> information than force people to guess based on heuristics or tribal >> knowledge. >> >>> So this should be placed in one of this sections: >> No. It is not information within a context or within a hardware engine. >> It is the reverse. All the following contexts, hardware engines, etc. >> are within the GT. >> >> And when you have multiple GTs in a single dump then you need a definite >> delimiter to say that all the following is now in a different GT to what >> came before. > Can't I do a exec over a exec_queue created over engines in different tiles? > I think we are allowed, so having tile and gt in '**** HW Engines ****' would be better. Not that I am aware of. The whole point of the 'hw engine' section is that it is related to a command streamer. And those cannot bridge GTs. John. > >> John. >> >>> GuC ID: 13 >>> Name: ccs13 >>> Class: 5 >>> Logical mask: 0x1 >>> Width: 1 >>> Ref: 2 >>> Timeout: 5000 (ms) >>> Timeslice: 1000 (us) >>> Preempt timeout: 640000 (us) >>> HW Context Desc: 0x025e0000 >>> HW Ring address: 0x025dc000 >>> HW Indirect Ring State: 0x025e3000 >>> LRC Head: (memory) 152 >>> LRC Tail: (internal) 296, (memory) 296 >>> Ring start: (memory) 0x025dc000 >>> Start seqno: (memory) -126 >>> Seqno: (memory) -127 >>> Timestamp: 0x0000035e >>> Job Timestamp: 0x0000035e >>> Schedule State: 0x441 >>> Flags: 0x0 >>> >>> **** HW Engines **** >>> ccs0 (physical), logical instance=0 >>> Capture_source: GuC >>> Coverage: full-capture >>> Forcewake: domain 0x2, ref 1 >>> Reserved: no >>> FORCEWAKE_GT: 0x00010000 >>> RCU_MODE: 0x00000001 >>> HWSTAM: 0xffffffff >>> RING_HWS_PGA: 0x018db000 >>> RING_HEAD: 0x000000ec >>> RING_TAIL: 0x00000128 >>> RING_CTL: 0x00003001 >>> RING_MI_MODE: 0x00001000 >>> RING_MODE: 0x00000008 >>> RING_ESR: 0x00000000 >>> RING_EMR: 0xffffffff >>> RING_EIR: 0x00000000 >>> RING_IMR: 0x00000000 >>> IPEHR: 0x7a000a04 >>> RING_INSTDONE: 0xffdefffe >>> >>>> John. >>>> >>>> >>>>> Tile: 0 >>>>> >>>>> **** GuC Log **** >>>>> .... >>>>> >>>>> Cc: John Harrison >>>>> Cc: Lucas De Marchi >>>>> Signed-off-by: José Roberto de Souza >>>>> --- >>>>> drivers/gpu/drm/xe/xe_devcoredump.c | 3 --- >>>>> 1 file changed, 3 deletions(-) >>>>> >>>>> diff --git a/drivers/gpu/drm/xe/xe_devcoredump.c b/drivers/gpu/drm/xe/xe_devcoredump.c >>>>> index 1c86e6456d60f..2996945ffee39 100644 >>>>> --- a/drivers/gpu/drm/xe/xe_devcoredump.c >>>>> +++ b/drivers/gpu/drm/xe/xe_devcoredump.c >>>>> @@ -111,9 +111,6 @@ static ssize_t __xe_devcoredump_read(char *buffer, size_t count, >>>>> drm_printf(&p, "Process: %s [%d]\n", ss->process_name, ss->pid); >>>>> xe_device_snapshot_print(xe, &p); >>>>> >>>>> - drm_printf(&p, "\n**** GT #%d ****\n", ss->gt->info.id); >>>>> - drm_printf(&p, "\tTile: %d\n", ss->gt->tile->id); >>>>> - >>>>> drm_puts(&p, "\n**** GuC Log ****\n"); >>>>> xe_guc_log_snapshot_print(ss->guc.log, &p); >>>>> drm_puts(&p, "\n**** GuC CT ****\n");