From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: [PATCH 4/4] drm/i915: Dampen RPS slow start Date: Thu, 2 Aug 2018 11:06:31 +0100 Message-ID: <20180802100631.31305-4-chris@chris-wilson.co.uk> References: <20180802100631.31305-1-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2225C6E0D4 for ; Thu, 2 Aug 2018 10:06:45 +0000 (UTC) In-Reply-To: <20180802100631.31305-1-chris@chris-wilson.co.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org Cc: Mika Kuoppala List-Id: intel-gfx@lists.freedesktop.org Q3VycmVudGx5LCB3ZSBub3RlIGNvbmdlc3Rpb24gZm9yIHRoZSBzbG93IHN0YXJ0IHJhbXBpbmcg dXAgb2YgUlBTIG9ubHkKd2hlbiB3ZSBvdmVyc2hvb3QgdGhlIHRhcmdldCB3b3JrbG9hZCBhbmQg aGF2ZSB0byByZXZlcnNlIGRpcmVjdGlvbiBmb3IKb3VyIHJlY2xvY2tpbmcuIFRoYXQgaXMsIGlm IHdlIGhhdmUgYSBwZXJpb2Qgd2hlcmUgdGhlIGN1cnJlbnQgR1BVCmZyZXF1ZW5jeSBpcyBlbm91 Z2ggdG8gc3VzdGFpbiB0aGUgd29ya2xvYWQgd2l0aGluIG91ciB0YXJnZXQKdXRpbGlzYXRpb24s IHdlIHNob3VsZCBub3QgdHJpZ2dlciBhbnkgUlBTIEVJIGludGVycnVwdHMsIGFuZCB0aGVuIG1h eQpjb250aW51ZSBhZ2FpbiB3aXRoIHRoZSBwcmV2aW91cyBsYXN0X2FkaiBhZnRlciBtdWx0aXBs ZSBwZXJpb2RzIGNhdXNpbmcKdXMgdG8gZHJhbWF0aWNhbGx5IG92ZXJyZWFjdC4gVG8gcHJldmVu dCB1cyBub3Qgbm90aWNpbmcgYSBwZXJpb2Qgd2hlcmUKdGhlIHN5c3RlbSBpcyBiZWhhdmluZyBj b3JyZWN0bHksIHdlIGNhbiBzY2hlZHVsZSBhbiBleHRyYSBpbnRlcnJ1cHQKdGhhdCB3aWxsIG5v dCBiZSBhc3NvY2lhdGVkIHdpdGggZWl0aGVyIGFuIHVwIG9yIGRvd24gZXZlbnQgY2F1c2luZyB0 bwpyZXNldCBsYXN0X2FkaiBiYWNrIHRvIHplcm8sIGNhbmNlbGxpbmcgdGhlIHNsb3cgc3RhcnQg ZHVlIHRvIHRoZQpjb25nZXN0aW9uLgoKdjI6IFNlcGFyYXRlIHVwL2Rvd24gRUkKdjM6IFJlc2V0 IHJwcyBldmVudHMgdXBvbiBlbmFibGluZwoKU2lnbmVkLW9mZi1ieTogQ2hyaXMgV2lsc29uIDxj aHJpc0BjaHJpcy13aWxzb24uY28udWs+CkNjOiBNaWthIEt1b3BwYWxhIDxtaWthLmt1b3BwYWxh QGludGVsLmNvbT4KLS0tCiBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2lycS5jIHwgNDMgKysr KysrKysrKysrKysrKysrKysrLS0tLS0tLS0tLS0tCiBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9wbS5jIHwgMTQgKysrKysrKystLS0KIDIgZmlsZXMgY2hhbmdlZCwgMzggaW5zZXJ0aW9ucygr KSwgMTkgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkx NV9pcnEuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfaXJxLmMKaW5kZXggODA4NGUzNWIy NWM1Li42OTkxOWE5N2VjMmUgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVf aXJxLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9pcnEuYwpAQCAtNDkzLDYgKzQ5 MywxNCBAQCB2b2lkIGdlbjZfZW5hYmxlX3Jwc19pbnRlcnJ1cHRzKHN0cnVjdCBkcm1faTkxNV9w cml2YXRlICpkZXZfcHJpdikKIAlzcGluX2xvY2tfaXJxKCZkZXZfcHJpdi0+aXJxX2xvY2spOwog CVdBUk5fT05fT05DRShycHMtPnBtX2lpcik7CiAKKwlpZiAoSVNfVkFMTEVZVklFVyhkZXZfcHJp dikpCisJCS8qIFdhR3N2UkMwUmVzaWRlbmN5TWV0aG9kOnZsdiAqLworCQlkZXZfcHJpdi0+cG1f cnBzX2V2ZW50cyA9IEdFTjZfUE1fUlBfVVBfRUlfRVhQSVJFRDsKKwllbHNlCisJCWRldl9wcml2 LT5wbV9ycHNfZXZlbnRzID0gKEdFTjZfUE1fUlBfVVBfVEhSRVNIT0xEIHwKKwkJCQkJICAgR0VO Nl9QTV9SUF9ET1dOX1RIUkVTSE9MRCB8CisJCQkJCSAgIEdFTjZfUE1fUlBfRE9XTl9USU1FT1VU KTsKKwogCWlmIChJTlRFTF9HRU4oZGV2X3ByaXYpID49IDExKQogCQlXQVJOX09OX09OQ0UoZ2Vu MTFfcmVzZXRfb25lX2lpcihkZXZfcHJpdiwgMCwgR0VOMTFfR1RQTSkpOwogCWVsc2UKQEAgLTEy OTgsNyArMTMwNiwxMyBAQCBzdGF0aWMgdm9pZCBnZW42X3BtX3Jwc193b3JrKHN0cnVjdCB3b3Jr X3N0cnVjdCAqd29yaykKIAogCW11dGV4X2xvY2soJmRldl9wcml2LT5wY3VfbG9jayk7CiAKLQlw bV9paXIgfD0gdmx2X3dhX2MwX2VpKGRldl9wcml2LCBwbV9paXIpOworCWRldl9wcml2LT5wbV9y cHNfZXZlbnRzICY9CisJCX4oR0VONl9QTV9SUF9ET1dOX0VJX0VYUElSRUQgfCBHRU42X1BNX1JQ X1VQX0VJX0VYUElSRUQpOworCisJaWYgKElTX1ZBTExFWVZJRVcoZGV2X3ByaXYpKSB7CisJCWRl dl9wcml2LT5wbV9ycHNfZXZlbnRzIHw9IEdFTjZfUE1fUlBfVVBfRUlfRVhQSVJFRDsKKwkJcG1f aWlyIHw9IHZsdl93YV9jMF9laShkZXZfcHJpdiwgcG1faWlyKTsKKwl9CiAKIAlhZGogPSBycHMt Pmxhc3RfYWRqOwogCW5ld19kZWxheSA9IHJwcy0+Y3VyX2ZyZXE7CkBAIC0xMzEwLDEwICsxMzI0 LDEyIEBAIHN0YXRpYyB2b2lkIGdlbjZfcG1fcnBzX3dvcmsoc3RydWN0IHdvcmtfc3RydWN0ICp3 b3JrKQogCQluZXdfZGVsYXkgPSBycHMtPmJvb3N0X2ZyZXE7CiAJCWFkaiA9IDA7CiAJfSBlbHNl IGlmIChwbV9paXIgJiBHRU42X1BNX1JQX1VQX1RIUkVTSE9MRCkgewotCQlpZiAoYWRqID4gMCkK KwkJaWYgKGFkaiA+IDApIHsKKwkJCWRldl9wcml2LT5wbV9ycHNfZXZlbnRzIHw9IEdFTjZfUE1f UlBfVVBfRUlfRVhQSVJFRDsKIAkJCWFkaiAqPSAyOwotCQllbHNlIC8qIENIViBuZWVkcyBldmVu IGVuY29kZSB2YWx1ZXMgKi8KKwkJfSBlbHNlIHsgLyogQ0hWIG5lZWRzIGV2ZW4gZW5jb2RlIHZh bHVlcyAqLwogCQkJYWRqID0gSVNfQ0hFUlJZVklFVyhkZXZfcHJpdikgPyAyIDogMTsKKwkJfQog CiAJCWlmIChuZXdfZGVsYXkgPj0gcnBzLT5tYXhfZnJlcV9zb2Z0bGltaXQpCiAJCQlhZGogPSAw OwpAQCAtMTMyNiwxNSArMTM0MiwyMSBAQCBzdGF0aWMgdm9pZCBnZW42X3BtX3Jwc193b3JrKHN0 cnVjdCB3b3JrX3N0cnVjdCAqd29yaykKIAkJCW5ld19kZWxheSA9IHJwcy0+bWluX2ZyZXFfc29m dGxpbWl0OwogCQlhZGogPSAwOwogCX0gZWxzZSBpZiAocG1faWlyICYgR0VONl9QTV9SUF9ET1dO X1RIUkVTSE9MRCkgewotCQlpZiAoYWRqIDwgMCkKKwkJaWYgKGFkaiA8IDApIHsKKwkJCWRldl9w cml2LT5wbV9ycHNfZXZlbnRzIHw9IEdFTjZfUE1fUlBfRE9XTl9FSV9FWFBJUkVEOwogCQkJYWRq ICo9IDI7Ci0JCWVsc2UgLyogQ0hWIG5lZWRzIGV2ZW4gZW5jb2RlIHZhbHVlcyAqLworCQl9IGVs c2UgeyAvKiBDSFYgbmVlZHMgZXZlbiBlbmNvZGUgdmFsdWVzICovCiAJCQlhZGogPSBJU19DSEVS UllWSUVXKGRldl9wcml2KSA/IC0yIDogLTE7CisJCX0KIAogCQlpZiAobmV3X2RlbGF5IDw9IHJw cy0+bWluX2ZyZXFfc29mdGxpbWl0KQogCQkJYWRqID0gMDsKLQl9IGVsc2UgeyAvKiB1bmtub3du IGV2ZW50ICovCisJfSBlbHNlIGlmIChwbV9paXIgJiBHRU42X1BNX1JQX1VQX1RIUkVTSE9MRCAm JiBhZGogPiAwKSB7CisJCWFkaiA9IDA7CisJfSBlbHNlIGlmIChwbV9paXIgJiBHRU42X1BNX1JQ X0RPV05fVEhSRVNIT0xEICYmIGFkaiA8IDApIHsKIAkJYWRqID0gMDsKKwl9IGVsc2UgeworCQkv KiB1bmtub3duIGV2ZW50ICovCiAJfQogCiAJcnBzLT5sYXN0X2FkaiA9IGFkajsKQEAgLTQ3NzMs MTUgKzQ3OTUsNiBAQCB2b2lkIGludGVsX2lycV9pbml0KHN0cnVjdCBkcm1faTkxNV9wcml2YXRl ICpkZXZfcHJpdikKIAlpZiAoSEFTX0dVQ19TQ0hFRChkZXZfcHJpdikpCiAJCWRldl9wcml2LT5w bV9ndWNfZXZlbnRzID0gR0VOOV9HVUNfVE9fSE9TVF9JTlRfRVZFTlQ7CiAKLQkvKiBMZXQncyB0 cmFjayB0aGUgZW5hYmxlZCBycHMgZXZlbnRzICovCi0JaWYgKElTX1ZBTExFWVZJRVcoZGV2X3By aXYpKQotCQkvKiBXYUdzdlJDMFJlc2lkZW5jeU1ldGhvZDp2bHYgKi8KLQkJZGV2X3ByaXYtPnBt X3Jwc19ldmVudHMgPSBHRU42X1BNX1JQX1VQX0VJX0VYUElSRUQ7Ci0JZWxzZQotCQlkZXZfcHJp di0+cG1fcnBzX2V2ZW50cyA9IChHRU42X1BNX1JQX1VQX1RIUkVTSE9MRCB8Ci0JCQkJCSAgIEdF TjZfUE1fUlBfRE9XTl9USFJFU0hPTEQgfAotCQkJCQkgICBHRU42X1BNX1JQX0RPV05fVElNRU9V VCk7Ci0KIAlycHMtPnBtX2ludHJtc2tfbWJ6ID0gMDsKIAogCS8qCmRpZmYgLS1naXQgYS9kcml2 ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wbS5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxf cG0uYwppbmRleCBmOTBhM2M3ZjFjNDAuLmQ3MWE0OThlZTNhMSAxMDA2NDQKLS0tIGEvZHJpdmVy cy9ncHUvZHJtL2k5MTUvaW50ZWxfcG0uYworKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9wbS5jCkBAIC02Mzk3LDEwICs2Mzk3LDE2IEBAIHN0YXRpYyB1MzIgZ2VuNl9ycHNfcG1fbWFz ayhzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYsIHU4IHZhbCkKIAl1MzIgbWFzayA9 IDA7CiAKIAkvKiBXZSB1c2UgVVBfRUlfRVhQSVJFRCBpbnRlcnVwdHMgZm9yIGJvdGggdXAvZG93 biBpbiBtYW51YWwgbW9kZSAqLwotCWlmICh2YWwgPiBycHMtPm1pbl9mcmVxX3NvZnRsaW1pdCkK LQkJbWFzayB8PSBHRU42X1BNX1JQX1VQX0VJX0VYUElSRUQgfCBHRU42X1BNX1JQX0RPV05fVEhS RVNIT0xEIHwgR0VONl9QTV9SUF9ET1dOX1RJTUVPVVQ7Ci0JaWYgKHZhbCA8IHJwcy0+bWF4X2Zy ZXFfc29mdGxpbWl0KQotCQltYXNrIHw9IEdFTjZfUE1fUlBfVVBfRUlfRVhQSVJFRCB8IEdFTjZf UE1fUlBfVVBfVEhSRVNIT0xEOworCWlmICh2YWwgPiBycHMtPm1pbl9mcmVxX3NvZnRsaW1pdCkg eworCQltYXNrIHw9IChHRU42X1BNX1JQX1VQX0VJX0VYUElSRUQgfAorCQkJIEdFTjZfUE1fUlBf RE9XTl9FSV9FWFBJUkVEIHwKKwkJCSBHRU42X1BNX1JQX0RPV05fVEhSRVNIT0xEIHwKKwkJCSBH RU42X1BNX1JQX0RPV05fVElNRU9VVCk7CisJfQorCWlmICh2YWwgPCBycHMtPm1heF9mcmVxX3Nv ZnRsaW1pdCkgeworCQltYXNrIHw9IChHRU42X1BNX1JQX1VQX0VJX0VYUElSRUQgfAorCQkJIEdF TjZfUE1fUlBfVVBfVEhSRVNIT0xEKTsKKwl9CiAKIAltYXNrICY9IGRldl9wcml2LT5wbV9ycHNf ZXZlbnRzOwogCi0tIAoyLjE4LjAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVk ZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2ludGVsLWdmeAo=