Balance the irqs of the marvell cesa driver over all
available cpus.
Currently all interrupts are handled by the first CPU.
>From my testing with IPSec AES 256 SHA256
on my clearfog base with 2 Cores I get a 2x speed increase:
Before the patch: 26.74 Kpps
With the patch: 56.11 Kpps
Signed-off-by: Sven Auhagen <sven.auhagen@xxxxxxxxxxxx>
---
drivers/crypto/marvell/cesa/cesa.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/marvell/cesa/cesa.c b/drivers/crypto/marvell/cesa/cesa.c
index 8a5f0b0bdf77..bf1bda2e904a 100644
--- a/drivers/crypto/marvell/cesa/cesa.c
+++ b/drivers/crypto/marvell/cesa/cesa.c
@@ -438,7 +438,7 @@ static int mv_cesa_probe(struct platform_device *pdev)
struct mv_cesa_dev *cesa;
struct mv_cesa_engine *engines;
struct resource *res;
- int irq, ret, i;
+ int irq, ret, i, cpu;
u32 sram_size;
if (cesa_dev) {
@@ -548,6 +548,10 @@ static int mv_cesa_probe(struct platform_device *pdev)
if (ret)
goto err_cleanup;
+ // Set affinity
+ cpu = engine->id % num_online_cpus();
+ irq_set_affinity_hint(irq, get_cpu_mask(cpu));
+
crypto_init_queue(&engine->queue, CESA_CRYPTO_DEFAULT_MAX_QLEN);
atomic_set(&engine->load, 0);
INIT_LIST_HEAD(&engine->complete_queue);
--
2.20.1
