From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E98E36BCDE; Sat, 12 Sep 2026 08:07:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789200426; cv=none; b=r3xbzsy0H+UmjAG/B60D9a5bVlIczFrcpxwKfJyh4ZJj5Vr6ad4UaK5Ef9dOGaVZDHWZLbkn3EHbCw9dLqNoRcWPt8agFfXrHPLxSf4VVapbdi7gnZmzpDsh1HkixMYAz5k9A5F10v6GvxVFZyoup+bitx/GMY4CGkUyMd5TP/I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789200426; c=relaxed/simple; bh=g2BxVNHhlrmsoMNtFBwnUPPoqgw9PssI6pqGhsSxuKQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=j4NXb/nEIXWP1lwouXCmIMux5N7VjphXnfe72ln4QIJPXIpp9gbBpzVI5q/Sbg/6aOSuMSZ7iS7I9wVRwDNaKf3L/tuhAsUYuC8USTezSBic3OAC3B2rxmN8AWGEn0ZqiwFxP+rtZI8yoJZABIoy6h3nJJW1bXSCjr0Dbz7UHWA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ghv0x40h; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ghv0x40h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 474DC1F000FF; Sat, 12 Sep 2026 08:07:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789200423; bh=oTRQBY4nQozthEHvNceO3ss/hNx2fcc60Jq2H7k0fAE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ghv0x40h7KahIZDoDRlj1qOvtZNNEjYBkh5Ei8gzRft1nVEMq+Btn9awEDv6rlwzK l7BZMLkkpMynF3qT/hiz82zzRANflqDK1GCSKe9K/K76jX7VLaZrw0SuZbE4HYfb2q LNDEHH45nrHPq7IRqxHoi93mcy+KpMIzVblpludg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Konrad Dybcio , Yuvaraj Ranganathan , Bjorn Andersson , Sasha Levin Subject: [PATCH 7.2 0788/1815] firmware: qcom: scm: instrument SMC call path with tracepoints Date: Sat, 12 Sep 2026 08:42:18 +0200 Message-ID: <20260912065707.406509576@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065648.999753832@linuxfoundation.org> References: <20260912065648.999753832@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yuvaraj Ranganathan [ Upstream commit 41329e72363c02facfeae063ef304aa7ced68c3b ] Wire the five tracepoints defined in qcom_scm_trace.h into the SMC execution path by including the header with CREATE_TRACE_POINTS. Reviewed-by: Konrad Dybcio Signed-off-by: Yuvaraj Ranganathan Link: https://lore.kernel.org/r/20260522-scm-tracepoints-v2-2-e27cdbe0c585@oss.qualcomm.com Signed-off-by: Bjorn Andersson Stable-dep-of: 966d23c7e68e ("firmware: qcom: scm: Fix NULL dereference in IRQ handler before __scm is published") Signed-off-by: Sasha Levin --- drivers/firmware/qcom/Makefile | 1 + drivers/firmware/qcom/qcom_scm-smc.c | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/drivers/firmware/qcom/Makefile b/drivers/firmware/qcom/Makefile index 0be40a1abc13c..b679d3fc2c267 100644 --- a/drivers/firmware/qcom/Makefile +++ b/drivers/firmware/qcom/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_QCOM_SCM) += qcom-scm.o qcom-scm-objs += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o +CFLAGS_qcom_scm-smc.o := -I$(src) obj-$(CONFIG_QCOM_TZMEM) += qcom_tzmem.o obj-$(CONFIG_QCOM_QSEECOM) += qcom_qseecom.o obj-$(CONFIG_QCOM_QSEECOM_UEFISECAPP) += qcom_qseecom_uefisecapp.o diff --git a/drivers/firmware/qcom/qcom_scm-smc.c b/drivers/firmware/qcom/qcom_scm-smc.c index 574930729ddd7..01999c22659cb 100644 --- a/drivers/firmware/qcom/qcom_scm-smc.c +++ b/drivers/firmware/qcom/qcom_scm-smc.c @@ -24,6 +24,9 @@ struct arm_smccc_args { unsigned long args[8]; }; +#define CREATE_TRACE_POINTS +#include "qcom_scm_trace.h" + static DEFINE_MUTEX(qcom_scm_lock); #define QCOM_SCM_EBUSY_WAIT_MS 30 @@ -44,6 +47,7 @@ static void __scm_smc_do_quirk(const struct arm_smccc_args *smc, quirk.state.a6 = 0; do { + trace_scm_smc_request(a0, smc); arm_smccc_smc_quirk(a0, smc->args[1], smc->args[2], smc->args[3], smc->args[4], smc->args[5], quirk.state.a6, smc->args[7], res, &quirk); @@ -83,6 +87,7 @@ int scm_get_wq_ctx(u32 *wq_ctx, u32 *flags, u32 *more_pending) if (ret) return ret; + trace_scm_waitq_get_wq_ctx(get_wq_res.a1, get_wq_res.a2, get_wq_res.a3); *wq_ctx = get_wq_res.a1; *flags = get_wq_res.a2; *more_pending = get_wq_res.a3; @@ -105,10 +110,12 @@ static int __scm_smc_do_quirk_handle_waitq(struct device *dev, struct arm_smccc_ wq_ctx = res->a1; smc_call_ctx = res->a2; + trace_scm_waitq_sleep(wq_ctx, smc_call_ctx); ret = qcom_scm_wait_for_wq_completion(wq_ctx); if (ret) return ret; + trace_scm_waitq_resume(smc_call_ctx); fill_wq_resume_args(&resume, smc_call_ctx); smc = &resume; } @@ -201,6 +208,9 @@ int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, } ret = __scm_smc_do(dev, &smc, &smc_res, atomic); + + trace_scm_smc_done(ret, smc.args[0], &smc_res); + if (ret) return ret; -- 2.53.0