linux-kernel - [PATCH 1/2] amdgpu: make pmu support optional

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Message-Id: <20190708144205.2770771-1-arnd@arndb.de>
Date:   Mon,  8 Jul 2019 16:41:43 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "David (ChunMing) Zhou" <David1.Zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     Arnd Bergmann <arnd@...db.de>, Jonathan Kim <Jonathan.Kim@....com>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Hawking Zhang <Hawking.Zhang@....com>,
        Huang Rui <ray.huang@....com>,
        Xiaojie Yuan <xiaojie.yuan@....com>,
        Jack Xiao <Jack.Xiao@....com>,
        Andrey Grodzovsky <andrey.grodzovsky@....com>,
        Rex Zhu <Rex.Zhu@....com>, Emily Deng <Emily.Deng@....com>,
        xinhui pan <xinhui.pan@....com>, Evan Quan <evan.quan@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] amdgpu: make pmu support optional

When CONFIG_PERF_EVENTS is disabled, we cannot compile the pmu
portion of the amdgpu driver:

drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c:48:38: error: no member named 'hw' in 'struct perf_event'
        struct hw_perf_event *hwc = &event->hw;
                                     ~~~~~  ^
drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c:51:13: error: no member named 'attr' in 'struct perf_event'
        if (event->attr.type != event->pmu->type)
            ~~~~~  ^
...

Use conditional compilation for this file.

Fixes: 9c7c85f7ea1f ("drm/amdgpu: add pmu counters")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpu/drm/amd/amdgpu/Makefile        | 4 +++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 ++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index 3a15a46b4ecb..3f5329906fce 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -54,7 +54,9 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
 	amdgpu_gtt_mgr.o amdgpu_vram_mgr.o amdgpu_virt.o amdgpu_atomfirmware.o \
 	amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o amdgpu_ids.o \
 	amdgpu_gmc.o amdgpu_xgmi.o amdgpu_csa.o amdgpu_ras.o amdgpu_vm_cpu.o \
-	amdgpu_vm_sdma.o amdgpu_pmu.o amdgpu_discovery.o
+	amdgpu_vm_sdma.o amdgpu_discovery.o
+
+amdgpu-$(CONFIG_PERF_EVENTS) += amdgpu_pmu.o
 
 # add asic specific block
 amdgpu-$(CONFIG_DRM_AMDGPU_CIK)+= cik.o cik_ih.o kv_smc.o kv_dpm.o \
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 30989b455047..a02ccce7bf53 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2816,7 +2816,8 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 		return r;
 	}
 
-	r = amdgpu_pmu_init(adev);
+	if (IS_ENABLED(CONFIG_PERF_EVENTS))
+		r = amdgpu_pmu_init(adev);
 	if (r)
 		dev_err(adev->dev, "amdgpu_pmu_init failed\n");
 
@@ -2888,7 +2889,8 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
 	amdgpu_debugfs_regs_cleanup(adev);
 	device_remove_file(adev->dev, &dev_attr_pcie_replay_count);
 	amdgpu_ucode_sysfs_fini(adev);
-	amdgpu_pmu_fini(adev);
+	if (IS_ENABLED(CONFIG_PERF_EVENTS))
+		amdgpu_pmu_fini(adev);
 	amdgpu_debugfs_preempt_cleanup(adev);
 	if (amdgpu_discovery)
 		amdgpu_discovery_fini(adev);
-- 
2.20.0