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From:   =?UTF-8?q?Andr=C3=A9=20Almeida?= <andrealmeid@igalia.com>
To:     dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
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Cc:     kernel-dev@igalia.com, alexander.deucher@amd.com,
        christian.koenig@amd.com, pierre-eric.pelloux-prayer@amd.com,
        =?UTF-8?q?=27Marek=20Ol=C5=A1=C3=A1k=27?= <maraeo@gmail.com>,
        Samuel Pitoiset <samuel.pitoiset@gmail.com>,
        Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>,
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        michel.daenzer@mailbox.org,
        =?UTF-8?q?Andr=C3=A9=20Almeida?= <andrealmeid@igalia.com>
Subject: [PATCH v2 6/6] drm/amdgpu: Create version number for coredumps
Date:   Thu, 13 Jul 2023 18:32:42 -0300
Message-ID: <20230713213242.680944-7-andrealmeid@igalia.com>
In-Reply-To: <20230713213242.680944-1-andrealmeid@igalia.com>
References: <20230713213242.680944-1-andrealmeid@igalia.com>
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Even if there's nothing currently parsing amdgpu's coredump files, if
we eventually have such tools they will be glad to find a version field
to properly read the file.

Create a version number to be displayed on top of coredump file, to be
incremented when the file format or content get changed.

Signed-off-by: André Almeida <andrealmeid@igalia.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        | 3 +++
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index cfeaf93934fd..905574acf3a0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1081,6 +1081,9 @@ struct amdgpu_device {
 };
 
 #ifdef CONFIG_DEV_COREDUMP
+
+#define AMDGPU_COREDUMP_VERSION "1"
+
 struct amdgpu_coredump_info {
 	struct amdgpu_device		*adev;
 	struct amdgpu_task_info         reset_task_info;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 431ccc3d7857..c83ea7aa135a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4985,6 +4985,7 @@ static ssize_t amdgpu_devcoredump_read(char *buffer, loff_t offset,
 	p = drm_coredump_printer(&iter);
 
 	drm_printf(&p, "**** AMDGPU Device Coredump ****\n");
+	drm_printf(&p, "version: " AMDGPU_COREDUMP_VERSION "\n");
 	drm_printf(&p, "kernel: " UTS_RELEASE "\n");
 	drm_printf(&p, "module: " KBUILD_MODNAME "\n");
 	drm_printf(&p, "time: %lld.%09ld\n", coredump->reset_time.tv_sec, coredump->reset_time.tv_nsec);
-- 
2.41.0