From bcdc7c05bd2dd8fa8afbd725110d5ec3075d4b42 Mon Sep 17 00:00:00 2001 From: Evan Quan Date: Fri, 22 May 2020 15:42:40 +0800 Subject: [PATCH] drm/amd/powerplay: enable thermal throttling logging support V2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Currently this feature is supported on Arcturus only. PMFW will interrupt driver the first time when thermal throttling happened and every one second afterwards if the throttling continuing. On receiving the 1st interrupt, driver logs it the first time. However, if the throttling continues, the logging will be performed every minute to avoid log flooding. V2: simplify the implemention by ratelimited printk Signed-off-by: Evan Quan Acked-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c index 415ccb752981..92cb7924524d 100644 --- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c +++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c @@ -1524,6 +1524,7 @@ static int smu_v11_0_irq_process(struct amdgpu_device *adev, struct amdgpu_irq_src *source, struct amdgpu_iv_entry *entry) { + struct smu_context *smu = &adev->smu; uint32_t client_id = entry->client_id; uint32_t src_id = entry->src_id; /* @@ -1532,6 +1533,11 @@ static int smu_v11_0_irq_process(struct amdgpu_device *adev, */ uint32_t ctxid = entry->src_data[0]; uint32_t data; + /* + * if the throttling continues, the logging will be performed every + * minute to avoid log flooding. + */ + static DEFINE_RATELIMIT_STATE(ratelimit_state, 60 * HZ, 1); if (client_id == SOC15_IH_CLIENTID_THM) { switch (src_id) { @@ -1575,6 +1581,11 @@ static int smu_v11_0_irq_process(struct amdgpu_device *adev, dev_dbg(adev->dev, "Switched to DC mode!\n"); smu_v11_0_ack_ac_dc_interrupt(&adev->smu); break; + case 0x7: + if (__ratelimit(&ratelimit_state)) + smu_log_thermal_throttling(smu); + + break; } } } -- 2.25.1