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Date: Tue, 29 Dec 2020 23:36:46 +0200
From: Oded Gabbay <ogabbay@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Alon Mizrahi <amizrahi@...ana.ai>
Subject: [PATCH 1/8] habanalabs: replace WARN/WARN_ON with dev_crit in driver
From: Alon Mizrahi <amizrahi@...ana.ai>
Often WARN is defined in data-centers as BUG and we would like to
avoid hanging the entire server on some internal error of the driver
(important as it might be).
Therefore, use dev_crit instead.
Signed-off-by: Alon Mizrahi <amizrahi@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
drivers/misc/habanalabs/common/asid.c | 6 ++++--
drivers/misc/habanalabs/common/command_buffer.c | 8 +++++---
.../misc/habanalabs/common/command_submission.c | 4 ++--
drivers/misc/habanalabs/common/device.c | 3 ++-
drivers/misc/habanalabs/common/mmu.c | 7 ++++---
drivers/misc/habanalabs/gaudi/gaudi.c | 14 +++++++-------
drivers/misc/habanalabs/goya/goya.c | 14 +++++++-------
7 files changed, 31 insertions(+), 25 deletions(-)
diff --git a/drivers/misc/habanalabs/common/asid.c b/drivers/misc/habanalabs/common/asid.c
index a2fdf31cf27c..ede04c032b6e 100644
--- a/drivers/misc/habanalabs/common/asid.c
+++ b/drivers/misc/habanalabs/common/asid.c
@@ -50,8 +50,10 @@ unsigned long hl_asid_alloc(struct hl_device *hdev)
void hl_asid_free(struct hl_device *hdev, unsigned long asid)
{
- if (WARN((asid == 0 || asid >= hdev->asic_prop.max_asid),
- "Invalid ASID %lu", asid))
+ if (asid == HL_KERNEL_ASID_ID || asid >= hdev->asic_prop.max_asid) {
+ dev_crit(hdev->dev, "Invalid ASID %lu", asid);
return;
+ }
+
clear_bit(asid, hdev->asid_bitmap);
}
diff --git a/drivers/misc/habanalabs/common/command_buffer.c b/drivers/misc/habanalabs/common/command_buffer.c
index 6f6a904ab6ca..d9adb9a5e4d8 100644
--- a/drivers/misc/habanalabs/common/command_buffer.c
+++ b/drivers/misc/habanalabs/common/command_buffer.c
@@ -635,10 +635,12 @@ struct hl_cb *hl_cb_kernel_create(struct hl_device *hdev, u32 cb_size,
cb_handle >>= PAGE_SHIFT;
cb = hl_cb_get(hdev, &hdev->kernel_cb_mgr, (u32) cb_handle);
- /* hl_cb_get should never fail here so use kernel WARN */
- WARN(!cb, "Kernel CB handle invalid 0x%x\n", (u32) cb_handle);
- if (!cb)
+ /* hl_cb_get should never fail here */
+ if (!cb) {
+ dev_crit(hdev->dev, "Kernel CB handle invalid 0x%x\n",
+ (u32) cb_handle);
goto destroy_cb;
+ }
return cb;
diff --git a/drivers/misc/habanalabs/common/command_submission.c b/drivers/misc/habanalabs/common/command_submission.c
index 348b0ecb4489..f7fac82ac41d 100644
--- a/drivers/misc/habanalabs/common/command_submission.c
+++ b/drivers/misc/habanalabs/common/command_submission.c
@@ -48,8 +48,8 @@ void hl_sob_reset_error(struct kref *ref)
struct hl_device *hdev = hw_sob->hdev;
dev_crit(hdev->dev,
- "SOB release shouldn't be called here, q_idx: %d, sob_id: %d\n",
- hw_sob->q_idx, hw_sob->sob_id);
+ "SOB release shouldn't be called here, q_idx: %d, sob_id: %d\n",
+ hw_sob->q_idx, hw_sob->sob_id);
}
/**
diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index d5b7e94350d6..9ef77a2a34ec 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -1485,7 +1485,8 @@ void hl_device_fini(struct hl_device *hdev)
usleep_range(50, 200);
rc = atomic_cmpxchg(&hdev->in_reset, 0, 1);
if (ktime_compare(ktime_get(), timeout) > 0) {
- WARN(1, "Failed to remove device because reset function did not finish\n");
+ dev_crit(hdev->dev,
+ "Failed to remove device because reset function did not finish\n");
return;
}
}
diff --git a/drivers/misc/habanalabs/common/mmu.c b/drivers/misc/habanalabs/common/mmu.c
index 33ae953d3a36..8ca265420545 100644
--- a/drivers/misc/habanalabs/common/mmu.c
+++ b/drivers/misc/habanalabs/common/mmu.c
@@ -261,9 +261,10 @@ int hl_mmu_map_page(struct hl_ctx *ctx, u64 virt_addr, u64 phys_addr,
return -EFAULT;
}
- WARN_ONCE((phys_addr & (real_page_size - 1)),
- "Mapping 0x%llx with page size of 0x%x is erroneous! Address must be divisible by page size",
- phys_addr, real_page_size);
+ if (phys_addr & (real_page_size - 1))
+ dev_crit(hdev->dev,
+ "Mapping 0x%llx with page size of 0x%x is erroneous! Address must be divisible by page size",
+ phys_addr, real_page_size);
npages = page_size / real_page_size;
real_virt_addr = virt_addr;
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 3bd51b0a38b3..712d40bea107 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -5307,10 +5307,10 @@ static int gaudi_parse_cb_mmu(struct hl_device *hdev,
patched_cb_handle >>= PAGE_SHIFT;
parser->patched_cb = hl_cb_get(hdev, &hdev->kernel_cb_mgr,
(u32) patched_cb_handle);
- /* hl_cb_get should never fail here so use kernel WARN */
- WARN(!parser->patched_cb, "DMA CB handle invalid 0x%x\n",
- (u32) patched_cb_handle);
+ /* hl_cb_get should never fail */
if (!parser->patched_cb) {
+ dev_crit(hdev->dev, "DMA CB handle invalid 0x%x\n",
+ (u32) patched_cb_handle);
rc = -EFAULT;
goto out;
}
@@ -5379,10 +5379,10 @@ static int gaudi_parse_cb_no_mmu(struct hl_device *hdev,
patched_cb_handle >>= PAGE_SHIFT;
parser->patched_cb = hl_cb_get(hdev, &hdev->kernel_cb_mgr,
(u32) patched_cb_handle);
- /* hl_cb_get should never fail here so use kernel WARN */
- WARN(!parser->patched_cb, "DMA CB handle invalid 0x%x\n",
- (u32) patched_cb_handle);
+ /* hl_cb_get should never fail here */
if (!parser->patched_cb) {
+ dev_crit(hdev->dev, "DMA CB handle invalid 0x%x\n",
+ (u32) patched_cb_handle);
rc = -EFAULT;
goto out;
}
@@ -5927,7 +5927,7 @@ static void gaudi_mmu_prepare(struct hl_device *hdev, u32 asid)
return;
if (asid & ~DMA0_QM_GLBL_NON_SECURE_PROPS_0_ASID_MASK) {
- WARN(1, "asid %u is too big\n", asid);
+ dev_crit(hdev->dev, "asid %u is too big\n", asid);
return;
}
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index dc32091d9b4b..da12462bd888 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -3875,10 +3875,10 @@ static int goya_parse_cb_mmu(struct hl_device *hdev,
patched_cb_handle >>= PAGE_SHIFT;
parser->patched_cb = hl_cb_get(hdev, &hdev->kernel_cb_mgr,
(u32) patched_cb_handle);
- /* hl_cb_get should never fail here so use kernel WARN */
- WARN(!parser->patched_cb, "DMA CB handle invalid 0x%x\n",
- (u32) patched_cb_handle);
+ /* hl_cb_get should never fail here */
if (!parser->patched_cb) {
+ dev_crit(hdev->dev, "DMA CB handle invalid 0x%x\n",
+ (u32) patched_cb_handle);
rc = -EFAULT;
goto out;
}
@@ -3947,10 +3947,10 @@ static int goya_parse_cb_no_mmu(struct hl_device *hdev,
patched_cb_handle >>= PAGE_SHIFT;
parser->patched_cb = hl_cb_get(hdev, &hdev->kernel_cb_mgr,
(u32) patched_cb_handle);
- /* hl_cb_get should never fail here so use kernel WARN */
- WARN(!parser->patched_cb, "DMA CB handle invalid 0x%x\n",
- (u32) patched_cb_handle);
+ /* hl_cb_get should never fail here */
if (!parser->patched_cb) {
+ dev_crit(hdev->dev, "DMA CB handle invalid 0x%x\n",
+ (u32) patched_cb_handle);
rc = -EFAULT;
goto out;
}
@@ -5041,7 +5041,7 @@ static void goya_mmu_prepare(struct hl_device *hdev, u32 asid)
return;
if (asid & ~MME_QM_GLBL_SECURE_PROPS_ASID_MASK) {
- WARN(1, "asid %u is too big\n", asid);
+ dev_crit(hdev->dev, "asid %u is too big\n", asid);
return;
}
--
2.25.1
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