{"id":2221734,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2221734/?format=json","web_url":"http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260410074921.1254213-7-aleksandr.loktionov@intel.com/","project":{"id":46,"url":"http://patchwork.ozlabs.org/api/1.1/projects/46/?format=json","name":"Intel Wired Ethernet development","link_name":"intel-wired-lan","list_id":"intel-wired-lan.osuosl.org","list_email":"intel-wired-lan@osuosl.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260410074921.1254213-7-aleksandr.loktionov@intel.com>","date":"2026-04-10T07:49:17","name":"[iwl-next,6/10] ice: increase OICR interrupt moderation rate to 20K interrupts/sec","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"82b250c491a463d52c4867e410e04196112827a9","submitter":{"id":75597,"url":"http://patchwork.ozlabs.org/api/1.1/people/75597/?format=json","name":"Loktionov, Aleksandr","email":"aleksandr.loktionov@intel.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260410074921.1254213-7-aleksandr.loktionov@intel.com/mbox/","series":[{"id":499419,"url":"http://patchwork.ozlabs.org/api/1.1/series/499419/?format=json","web_url":"http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=499419","date":"2026-04-10T07:49:11","name":"ice: misc cleanups and improvements","version":1,"mbox":"http://patchwork.ozlabs.org/series/499419/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2221734/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2221734/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=PI2YKr0L;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::136; 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a=\"77007934\"","E=Sophos;i=\"6.23,171,1770624000\"; d=\"scan'208\";a=\"77007934\"","E=Sophos;i=\"6.23,171,1770624000\"; d=\"scan'208\";a=\"228941886\""],"X-ExtLoop1":"1","From":"Aleksandr Loktionov ","To":"intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com,\n aleksandr.loktionov@intel.com","Cc":"netdev@vger.kernel.org,\n\tJacob Keller ","Date":"Fri, 10 Apr 2026 09:49:17 +0200","Message-ID":"<20260410074921.1254213-7-aleksandr.loktionov@intel.com>","X-Mailer":"git-send-email 2.52.0","In-Reply-To":"<20260410074921.1254213-1-aleksandr.loktionov@intel.com>","References":"<20260410074921.1254213-1-aleksandr.loktionov@intel.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Mailman-Original-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1775807374; x=1807343374;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=KyKKiZWFrU6bgfomlOok069woZZROnCpDRvRPVZwUBo=;\n b=OqlbWNmlz0LBpjSa50NXgSgyWoYnxWIueT4wGBRToOylwNF5kn+R7rhu\n MLAyFZnvVxqL/9DIy74ZGfg01VuVek5oWbeaiDRf3Oxvd3FZ/un44lxxD\n xxfQ31uCBe3734M5X7/Qa3aPRtqWkpo+cDW5GafJ3gMnWKHrzkAiSSjF3\n yKPZvsGLbRBMjVDFqWmBcFGw4DzXo7L6huujl4kwW4DoCotonwgKmZ4cH\n j5bHQadlqpMZ+DZ+/YpujSmFgqEUqJNkdzGPTZ6XaF/ypw7GRLqqi1FsD\n Cz61Y4q3Tvgxd/KJmCbjH1snt+ZJWz4DBNcFZWwczUpDFdSJ86JqWPmld\n w==;","X-Mailman-Original-Authentication-Results":["smtp1.osuosl.org;\n dmarc=pass (p=none dis=none)\n header.from=intel.com","smtp1.osuosl.org;\n dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com\n header.a=rsa-sha256 header.s=Intel header.b=OqlbWNml"],"Subject":"[Intel-wired-lan] [PATCH iwl-next 6/10] ice: increase OICR\n interrupt moderation rate to 20K interrupts/sec","X-BeenThere":"intel-wired-lan@osuosl.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Intel Wired Ethernet Linux Kernel Driver Development\n ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"intel-wired-lan-bounces@osuosl.org","Sender":"\"Intel-wired-lan\" "},"content":"The miscellaneous interrupt cause (OICR) is throttled to 8K\ninterrupts per second (124 us minimum spacing). This interrupt\nhandles VF mailbox messages and Tx timestamps, so the low rate\nimposes a minimum latency floor on both use-cases.\n\nRaise the rate to 20K interrupts per second (50 us minimum\nspacing) to allow lower latency handling for Tx timestamp\nbursts and high VF message rates.\n\nSigned-off-by: Jacob Keller \nSigned-off-by: Aleksandr Loktionov \n---\n drivers/net/ethernet/intel/ice/ice_main.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c\nindex 75a48e5..2921da4 100644\n--- a/drivers/net/ethernet/intel/ice/ice_main.c\n+++ b/drivers/net/ethernet/intel/ice/ice_main.c\n@@ -3501,7 +3501,7 @@ static int ice_req_irq_msix_misc(struct ice_pf *pf)\n \t\t ((pf->ll_ts_irq.index + pf_intr_start_offset) &\n \t\t PFINT_SB_CTL_MSIX_INDX_M) | PFINT_SB_CTL_CAUSE_ENA_M);\n \twr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_irq.index),\n-\t ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S);\n+\t ITR_REG_ALIGN(ICE_ITR_20K) >> ICE_ITR_GRAN_S);\n \n \tice_flush(hw);\n \tice_irq_dynamic_ena(hw, NULL, NULL);\n","prefixes":["iwl-next","6/10"]}