diff options
| author | Dani Liberman <dliberman@habana.ai> | 2023-09-21 16:02:33 +0200 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2024-02-26 08:30:40 +0100 |
| commit | e91c37f19404a1e36046d59f58e0c1fe1cc98cb9 (patch) | |
| tree | 8eff51d2ccfd1f9eeab292154ff237843d518e3c /drivers/accel/habanalabs/gaudi2/gaudi2.c | |
| parent | Merge tag 'amd-drm-next-6.9-2024-02-19' of https://gitlab.freedesktop.org/agd... (diff) | |
| download | linux-e91c37f19404a1e36046d59f58e0c1fe1cc98cb9.tar.xz linux-e91c37f19404a1e36046d59f58e0c1fe1cc98cb9.zip | |
accel/habanalabs/gaudi2: add interrupt affinity for user interrupts
User interrupts are MSIx interrupts coming from Gaudi2, that have
specific range of IDs and are assigned to the sole use of the user
process that opened the Gaudi2 device (reminder: there can be only
a single user process running on Gaudi2 at any given time).
The interrupts are allocated and managed by the driver and therefore,
the user expects the driver to initialize them properly, which also
includes setting the affinity to the related CPU cores of the
device's NUMA node to get maximum performance.
Signed-off-by: Dani Liberman <dliberman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/accel/habanalabs/gaudi2/gaudi2.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/accel/habanalabs/gaudi2/gaudi2.c b/drivers/accel/habanalabs/gaudi2/gaudi2.c index e0e5615ef9b0..fd01525b1ea2 100644 --- a/drivers/accel/habanalabs/gaudi2/gaudi2.c +++ b/drivers/accel/habanalabs/gaudi2/gaudi2.c @@ -4254,6 +4254,8 @@ static int gaudi2_enable_msix(struct hl_device *hdev) if (gaudi2->hw_cap_initialized & HW_CAP_MSIX) return 0; + hl_init_cpu_for_irq(hdev); + rc = pci_alloc_irq_vectors(hdev->pdev, GAUDI2_MSIX_ENTRIES, GAUDI2_MSIX_ENTRIES, PCI_IRQ_MSIX); if (rc < 0) { @@ -4307,6 +4309,7 @@ static int gaudi2_enable_msix(struct hl_device *hdev) i++, j++, user_irq_init_cnt++) { irq = pci_irq_vector(hdev->pdev, i); + hl_set_irq_affinity(hdev, irq); rc = request_irq(irq, hl_irq_user_interrupt_handler, 0, gaudi2_irq_name(i), &hdev->user_interrupt[j]); if (rc) { @@ -4333,6 +4336,7 @@ free_user_irq: i < GAUDI2_IRQ_NUM_USER_FIRST + user_irq_init_cnt ; i++, j++) { irq = pci_irq_vector(hdev->pdev, i); + irq_set_affinity_hint(irq, NULL); free_irq(irq, &hdev->user_interrupt[j]); } irq = pci_irq_vector(hdev->pdev, GAUDI2_IRQ_NUM_UNEXPECTED_ERROR); @@ -4413,6 +4417,7 @@ static void gaudi2_disable_msix(struct hl_device *hdev) k < hdev->asic_prop.user_interrupt_count ; i++, j++, k++) { irq = pci_irq_vector(hdev->pdev, i); + irq_set_affinity_hint(irq, NULL); free_irq(irq, &hdev->user_interrupt[j]); } |