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Date: Wed, 4 Nov 2020 10:36:25 +0200
From: Oded Gabbay <ogabbay@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: SW_Drivers@...ana.ai, farah kassabri <fkassabri@...ana.ai>
Subject: [PATCH] habanalabs: fix cs counters structure
From: farah kassabri <fkassabri@...ana.ai>
Fix cs counters structure in uapi to be one flat structure instead
of two instances of the same other structure.
use atomic read/increment for context counters so we could use
one structure for both aggregated and context counters.
Signed-off-by: farah kassabri <fkassabri@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
.../habanalabs/common/command_submission.c | 18 +++--
drivers/misc/habanalabs/common/habanalabs.h | 73 ++++++++++---------
.../misc/habanalabs/common/habanalabs_ioctl.c | 35 ++++++---
drivers/misc/habanalabs/common/hw_queue.c | 5 +-
drivers/misc/habanalabs/gaudi/gaudi.c | 4 +-
include/uapi/misc/habanalabs.h | 35 +++++----
6 files changed, 95 insertions(+), 75 deletions(-)
diff --git a/drivers/misc/habanalabs/common/command_submission.c b/drivers/misc/habanalabs/common/command_submission.c
index 746005f7f991..e9529f3efc1b 100644
--- a/drivers/misc/habanalabs/common/command_submission.c
+++ b/drivers/misc/habanalabs/common/command_submission.c
@@ -462,7 +462,7 @@ static int allocate_cs(struct hl_device *hdev, struct hl_ctx *ctx,
if (other && !completion_done(&other->completion)) {
dev_dbg_ratelimited(hdev->dev,
"Rejecting CS because of too many in-flights CS\n");
- ctx->cs_counters.max_cs_in_flight_drop_cnt++;
+ atomic64_inc(&ctx->cs_counters.max_cs_in_flight_drop_cnt);
atomic64_inc(&cntr->max_cs_in_flight_drop_cnt);
rc = -EAGAIN;
goto free_fence;
@@ -720,7 +720,7 @@ static int cs_ioctl_default(struct hl_fpriv *hpriv, void __user *chunks,
rc = validate_queue_index(hdev, chunk, &queue_type,
&is_kernel_allocated_cb);
if (rc) {
- hpriv->ctx->cs_counters.parsing_drop_cnt++;
+ atomic64_inc(&hpriv->ctx->cs_counters.parsing_drop_cnt);
atomic64_inc(&cntr->parsing_drop_cnt);
goto free_cs_object;
}
@@ -728,7 +728,8 @@ static int cs_ioctl_default(struct hl_fpriv *hpriv, void __user *chunks,
if (is_kernel_allocated_cb) {
cb = get_cb_from_cs_chunk(hdev, &hpriv->cb_mgr, chunk);
if (!cb) {
- hpriv->ctx->cs_counters.parsing_drop_cnt++;
+ atomic64_inc(
+ &hpriv->ctx->cs_counters.parsing_drop_cnt);
atomic64_inc(&cntr->parsing_drop_cnt);
rc = -EINVAL;
goto free_cs_object;
@@ -743,7 +744,8 @@ static int cs_ioctl_default(struct hl_fpriv *hpriv, void __user *chunks,
job = hl_cs_allocate_job(hdev, queue_type,
is_kernel_allocated_cb);
if (!job) {
- hpriv->ctx->cs_counters.out_of_mem_drop_cnt++;
+ atomic64_inc(
+ &hpriv->ctx->cs_counters.out_of_mem_drop_cnt);
atomic64_inc(&cntr->out_of_mem_drop_cnt);
dev_err(hdev->dev, "Failed to allocate a new job\n");
rc = -ENOMEM;
@@ -777,7 +779,7 @@ static int cs_ioctl_default(struct hl_fpriv *hpriv, void __user *chunks,
rc = cs_parser(hpriv, job);
if (rc) {
- hpriv->ctx->cs_counters.parsing_drop_cnt++;
+ atomic64_inc(&hpriv->ctx->cs_counters.parsing_drop_cnt);
atomic64_inc(&cntr->parsing_drop_cnt);
dev_err(hdev->dev,
"Failed to parse JOB %d.%llu.%d, err %d, rejecting the CS\n",
@@ -787,7 +789,7 @@ static int cs_ioctl_default(struct hl_fpriv *hpriv, void __user *chunks,
}
if (int_queues_only) {
- hpriv->ctx->cs_counters.parsing_drop_cnt++;
+ atomic64_inc(&hpriv->ctx->cs_counters.parsing_drop_cnt);
atomic64_inc(&cntr->parsing_drop_cnt);
dev_err(hdev->dev,
"Reject CS %d.%llu because only internal queues jobs are present\n",
@@ -880,7 +882,7 @@ static int cs_ioctl_signal_wait_create_jobs(struct hl_device *hdev,
job = hl_cs_allocate_job(hdev, q_type, true);
if (!job) {
- ctx->cs_counters.out_of_mem_drop_cnt++;
+ atomic64_inc(&ctx->cs_counters.out_of_mem_drop_cnt);
atomic64_inc(&cntr->out_of_mem_drop_cnt);
dev_err(hdev->dev, "Failed to allocate a new job\n");
return -ENOMEM;
@@ -894,7 +896,7 @@ static int cs_ioctl_signal_wait_create_jobs(struct hl_device *hdev,
cb = hl_cb_kernel_create(hdev, cb_size,
q_type == QUEUE_TYPE_HW && hdev->mmu_enable);
if (!cb) {
- ctx->cs_counters.out_of_mem_drop_cnt++;
+ atomic64_inc(&ctx->cs_counters.out_of_mem_drop_cnt);
atomic64_inc(&cntr->out_of_mem_drop_cnt);
kfree(job);
return -EFAULT;
diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h
index 2b17c13a2e34..0fe108eef1a4 100644
--- a/drivers/misc/habanalabs/common/habanalabs.h
+++ b/drivers/misc/habanalabs/common/habanalabs.h
@@ -936,6 +936,22 @@ struct hl_va_range {
u64 end_addr;
};
+/**
+ * struct hl_cs_counters_atomic - command submission counters
+ * @out_of_mem_drop_cnt: dropped due to memory allocation issue
+ * @parsing_drop_cnt: dropped due to error in packet parsing
+ * @queue_full_drop_cnt: dropped due to queue full
+ * @device_in_reset_drop_cnt: dropped due to device in reset
+ * @max_cs_in_flight_drop_cnt: dropped due to maximum CS in-flight
+ */
+struct hl_cs_counters_atomic {
+ atomic64_t out_of_mem_drop_cnt;
+ atomic64_t parsing_drop_cnt;
+ atomic64_t queue_full_drop_cnt;
+ atomic64_t device_in_reset_drop_cnt;
+ atomic64_t max_cs_in_flight_drop_cnt;
+};
+
/**
* struct hl_ctx - user/kernel context.
* @mem_hash: holds mapping from virtual address to virtual memory area
@@ -954,6 +970,7 @@ struct hl_va_range {
* @mmu_lock: protects the MMU page tables. Any change to the PGT, modifying the
* MMU hash or walking the PGT requires talking this lock.
* @debugfs_list: node in debugfs list of contexts.
+ * @cs_counters: context command submission counters.
* @cb_va_pool: device VA pool for command buffers which are mapped to the
* device's MMU.
* @cs_sequence: sequence number for CS. Value is assigned to a CS and passed
@@ -976,26 +993,26 @@ struct hl_va_range {
struct hl_ctx {
DECLARE_HASHTABLE(mem_hash, MEM_HASH_TABLE_BITS);
DECLARE_HASHTABLE(mmu_shadow_hash, MMU_HASH_TABLE_BITS);
- struct hl_fpriv *hpriv;
- struct hl_device *hdev;
- struct kref refcount;
- struct hl_fence **cs_pending;
- struct hl_va_range *host_va_range;
- struct hl_va_range *host_huge_va_range;
- struct hl_va_range *dram_va_range;
- struct mutex mem_hash_lock;
- struct mutex mmu_lock;
- struct list_head debugfs_list;
- struct hl_cs_counters cs_counters;
- struct gen_pool *cb_va_pool;
- u64 cs_sequence;
- u64 *dram_default_hops;
- spinlock_t cs_lock;
- atomic64_t dram_phys_mem;
- atomic_t thread_ctx_switch_token;
- u32 thread_ctx_switch_wait_token;
- u32 asid;
- u32 handle;
+ struct hl_fpriv *hpriv;
+ struct hl_device *hdev;
+ struct kref refcount;
+ struct hl_fence **cs_pending;
+ struct hl_va_range *host_va_range;
+ struct hl_va_range *host_huge_va_range;
+ struct hl_va_range *dram_va_range;
+ struct mutex mem_hash_lock;
+ struct mutex mmu_lock;
+ struct list_head debugfs_list;
+ struct hl_cs_counters_atomic cs_counters;
+ struct gen_pool *cb_va_pool;
+ u64 cs_sequence;
+ u64 *dram_default_hops;
+ spinlock_t cs_lock;
+ atomic64_t dram_phys_mem;
+ atomic_t thread_ctx_switch_token;
+ u32 thread_ctx_switch_wait_token;
+ u32 asid;
+ u32 handle;
};
/**
@@ -1164,22 +1181,6 @@ struct hl_cs_parser {
u8 contains_dma_pkt;
};
-/**
- * struct hl_info_cs_counters - command submission counters
- * @out_of_mem_drop_cnt: dropped due to memory allocation issue
- * @parsing_drop_cnt: dropped due to error in packet parsing
- * @queue_full_drop_cnt: dropped due to queue full
- * @device_in_reset_drop_cnt: dropped due to device in reset
- * @max_cs_in_flight_drop_cnt: dropped due to maximum CS in-flight
- */
-struct hl_cs_counters_atomic {
- atomic64_t out_of_mem_drop_cnt;
- atomic64_t parsing_drop_cnt;
- atomic64_t queue_full_drop_cnt;
- atomic64_t device_in_reset_drop_cnt;
- atomic64_t max_cs_in_flight_drop_cnt;
-};
-
/*
* MEMORY STRUCTURE
*/
diff --git a/drivers/misc/habanalabs/common/habanalabs_ioctl.c b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
index 350a768309bd..1d8bea626e78 100644
--- a/drivers/misc/habanalabs/common/habanalabs_ioctl.c
+++ b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
@@ -315,7 +315,7 @@ static int clk_throttle_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
static int cs_counters_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
{
void __user *out = (void __user *) (uintptr_t) args->return_pointer;
- struct hl_info_cs_counters cs_counters = { {0} };
+ struct hl_info_cs_counters cs_counters = {0};
struct hl_device *hdev = hpriv->hdev;
struct hl_cs_counters_atomic *cntr;
u32 max_size = args->return_size;
@@ -325,23 +325,34 @@ static int cs_counters_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
if ((!max_size) || (!out))
return -EINVAL;
- memcpy(&cs_counters.cs_counters, &hdev->aggregated_cs_counters,
- sizeof(struct hl_cs_counters));
-
- cs_counters.cs_counters.out_of_mem_drop_cnt =
+ cs_counters.total_out_of_mem_drop_cnt =
atomic64_read(&cntr->out_of_mem_drop_cnt);
- cs_counters.cs_counters.parsing_drop_cnt =
+ cs_counters.total_parsing_drop_cnt =
atomic64_read(&cntr->parsing_drop_cnt);
- cs_counters.cs_counters.queue_full_drop_cnt =
+ cs_counters.total_queue_full_drop_cnt =
atomic64_read(&cntr->queue_full_drop_cnt);
- cs_counters.cs_counters.device_in_reset_drop_cnt =
+ cs_counters.total_device_in_reset_drop_cnt =
atomic64_read(&cntr->device_in_reset_drop_cnt);
- cs_counters.cs_counters.max_cs_in_flight_drop_cnt =
+ cs_counters.total_max_cs_in_flight_drop_cnt =
atomic64_read(&cntr->max_cs_in_flight_drop_cnt);
- if (hpriv->ctx)
- memcpy(&cs_counters.ctx_cs_counters, &hpriv->ctx->cs_counters,
- sizeof(struct hl_cs_counters));
+ if (hpriv->ctx) {
+ cs_counters.ctx_out_of_mem_drop_cnt =
+ atomic64_read(
+ &hpriv->ctx->cs_counters.out_of_mem_drop_cnt);
+ cs_counters.ctx_parsing_drop_cnt =
+ atomic64_read(
+ &hpriv->ctx->cs_counters.parsing_drop_cnt);
+ cs_counters.ctx_queue_full_drop_cnt =
+ atomic64_read(
+ &hpriv->ctx->cs_counters.queue_full_drop_cnt);
+ cs_counters.ctx_device_in_reset_drop_cnt =
+ atomic64_read(
+ &hpriv->ctx->cs_counters.device_in_reset_drop_cnt);
+ cs_counters.ctx_max_cs_in_flight_drop_cnt =
+ atomic64_read(
+ &hpriv->ctx->cs_counters.max_cs_in_flight_drop_cnt);
+ }
return copy_to_user(out, &cs_counters,
min((size_t) max_size, sizeof(cs_counters))) ? -EFAULT : 0;
diff --git a/drivers/misc/habanalabs/common/hw_queue.c b/drivers/misc/habanalabs/common/hw_queue.c
index 8a15db724116..239e2ba0545f 100644
--- a/drivers/misc/habanalabs/common/hw_queue.c
+++ b/drivers/misc/habanalabs/common/hw_queue.c
@@ -524,7 +524,7 @@ int hl_hw_queue_schedule_cs(struct hl_cs *cs)
hdev->asic_funcs->hw_queues_lock(hdev);
if (hl_device_disabled_or_in_reset(hdev)) {
- ctx->cs_counters.device_in_reset_drop_cnt++;
+ atomic64_inc(&ctx->cs_counters.device_in_reset_drop_cnt);
atomic64_inc(&cntr->device_in_reset_drop_cnt);
dev_err(hdev->dev,
"device is disabled or in reset, CS rejected!\n");
@@ -558,7 +558,8 @@ int hl_hw_queue_schedule_cs(struct hl_cs *cs)
}
if (rc) {
- ctx->cs_counters.queue_full_drop_cnt++;
+ atomic64_inc(
+ &ctx->cs_counters.queue_full_drop_cnt);
atomic64_inc(&cntr->queue_full_drop_cnt);
goto unroll_cq_resv;
}
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index d8fdcae542c0..e5a2b7da0a20 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -1141,7 +1141,7 @@ static int gaudi_collective_wait_create_job(struct hl_device *hdev,
hw_queue_prop = &hdev->asic_prop.hw_queues_props[queue_id];
job = hl_cs_allocate_job(hdev, hw_queue_prop->type, true);
if (!job) {
- ctx->cs_counters.out_of_mem_drop_cnt++;
+ atomic64_inc(&ctx->cs_counters.out_of_mem_drop_cnt);
atomic64_inc(&cntr->out_of_mem_drop_cnt);
dev_err(hdev->dev, "Failed to allocate a new job\n");
return -ENOMEM;
@@ -1151,7 +1151,7 @@ static int gaudi_collective_wait_create_job(struct hl_device *hdev,
cb = hl_cb_kernel_create(hdev, cb_size,
hdev->mmu_enable && !patched_cb);
if (!cb) {
- ctx->cs_counters.out_of_mem_drop_cnt++;
+ atomic64_inc(&ctx->cs_counters.out_of_mem_drop_cnt);
atomic64_inc(&cntr->out_of_mem_drop_cnt);
kfree(job);
return -EFAULT;
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index 0185311b679b..61f8f9144b54 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -407,23 +407,28 @@ struct hl_info_sync_manager {
/**
* struct hl_info_cs_counters - command submission counters
- * @out_of_mem_drop_cnt: dropped due to memory allocation issue
- * @parsing_drop_cnt: dropped due to error in packet parsing
- * @queue_full_drop_cnt: dropped due to queue full
- * @device_in_reset_drop_cnt: dropped due to device in reset
- * @max_cs_in_flight_drop_cnt: dropped due to maximum CS in-flight
+ * @total_out_of_mem_drop_cnt: total dropped due to memory allocation issue
+ * @ctx_out_of_mem_drop_cnt: context dropped due to memory allocation issue
+ * @total_parsing_drop_cnt: total dropped due to error in packet parsing
+ * @ctx_parsing_drop_cnt: context dropped due to error in packet parsing
+ * @total_queue_full_drop_cnt: total dropped due to queue full
+ * @ctx_queue_full_drop_cnt: context dropped due to queue full
+ * @total_device_in_reset_drop_cnt: total dropped due to device in reset
+ * @ctx_device_in_reset_drop_cnt: context dropped due to device in reset
+ * @total_max_cs_in_flight_drop_cnt: total dropped due to maximum CS in-flight
+ * @ctx_max_cs_in_flight_drop_cnt: context dropped due to maximum CS in-flight
*/
-struct hl_cs_counters {
- __u64 out_of_mem_drop_cnt;
- __u64 parsing_drop_cnt;
- __u64 queue_full_drop_cnt;
- __u64 device_in_reset_drop_cnt;
- __u64 max_cs_in_flight_drop_cnt;
-};
-
struct hl_info_cs_counters {
- struct hl_cs_counters cs_counters;
- struct hl_cs_counters ctx_cs_counters;
+ __u64 total_out_of_mem_drop_cnt;
+ __u64 ctx_out_of_mem_drop_cnt;
+ __u64 total_parsing_drop_cnt;
+ __u64 ctx_parsing_drop_cnt;
+ __u64 total_queue_full_drop_cnt;
+ __u64 ctx_queue_full_drop_cnt;
+ __u64 total_device_in_reset_drop_cnt;
+ __u64 ctx_device_in_reset_drop_cnt;
+ __u64 total_max_cs_in_flight_drop_cnt;
+ __u64 ctx_max_cs_in_flight_drop_cnt;
};
enum gaudi_dcores {
--
2.17.1
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