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Message-ID: <20241024100857.GN1279924@google.com>
Date: Thu, 24 Oct 2024 19:08:57 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Cc: Sergey Senozhatsky <senozhatsky@...omium.org>,
Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
Vikash Garodia <quic_vgarodia@...cinc.com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2 2/2] media: venus: sync with threaded IRQ during inst
destruction
On (24/10/24 10:43), Bryan O'Donoghue wrote:
> > > It also occurs to me that most of the close() operation code is shared
> > > between venc_close() and vdec_close() a welcome patch for V3 would be to
> > > functionally decompose the common code to a shared location.
> >
> > Any preferences where that "shared location" should be?
>
> Probably core.c is the only place we can jam stuff to be shared
Ack.
So, we need to
- export a couple of symbols
- include vdec header in core
Does something like this look OK to you?
---
diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
index 31ea0982f58e..e7c69a292b3c 100644
--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -500,6 +500,31 @@ static __maybe_unused int venus_runtime_suspend(struct device *dev)
return ret;
}
+void venus_close_common(struct venus_inst *inst)
+{
+ /*
+ * First, remove the inst from the ->instances list, so that
+ * to_instance() will return NULL.
+ */
+ hfi_session_destroy(inst);
+ /*
+ * Second, make sure we don't have IRQ/IRQ-thread currently running
+ * or pending execution, which would race with the inst destruction.
+ */
+ synchronize_irq(inst->core->irq);
+
+ v4l2_m2m_ctx_release(inst->m2m_ctx);
+ v4l2_m2m_release(inst->m2m_dev);
+ ida_destroy(&inst->dpb_ids);
+ v4l2_fh_del(&inst->fh);
+ v4l2_fh_exit(&inst->fh);
+ vdec_ctrl_deinit(inst);
+
+ mutex_destroy(&inst->lock);
+ mutex_destroy(&inst->ctx_q_lock);
+}
+EXPORT_SYMBOL_GPL(venus_close_common);
+
static __maybe_unused int venus_runtime_resume(struct device *dev)
{
struct venus_core *core = dev_get_drvdata(dev);
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index 3748a9a74dce..75e9b29d1b01 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -17,6 +17,7 @@
#include "hfi.h"
#include "hfi_platform.h"
#include "hfi_helper.h"
+#include "vdec.h"
#define VDBGL "VenusLow : "
#define VDBGM "VenusMed : "
@@ -569,4 +570,6 @@ is_fw_rev_or_older(struct venus_core *core, u32 vmajor, u32 vminor, u32 vrev)
(core)->venus_ver.minor == vminor &&
(core)->venus_ver.rev <= vrev);
}
+
+void venus_close_common(struct venus_inst *inst);
#endif
diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index d802ece8948f..b7d4801222cb 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -1746,29 +1746,8 @@ static int vdec_close(struct file *file)
struct venus_inst *inst = to_inst(file);
vdec_pm_get(inst);
-
cancel_work_sync(&inst->delayed_process_work);
- /*
- * First, remove the inst from the ->instances list, so that
- * to_instance() will return NULL.
- */
- hfi_session_destroy(inst);
- /*
- * Second, make sure we don't have IRQ/IRQ-thread currently running
- * or pending execution, which would race with the inst destruction.
- */
- synchronize_irq(inst->core->irq);
-
- v4l2_m2m_ctx_release(inst->m2m_ctx);
- v4l2_m2m_release(inst->m2m_dev);
- ida_destroy(&inst->dpb_ids);
- v4l2_fh_del(&inst->fh);
- v4l2_fh_exit(&inst->fh);
- vdec_ctrl_deinit(inst);
-
- mutex_destroy(&inst->lock);
- mutex_destroy(&inst->ctx_q_lock);
-
+ venus_close_common(inst);
vdec_pm_put(inst, false);
kfree(inst);
diff --git a/drivers/media/platform/qcom/venus/vdec_ctrls.c b/drivers/media/platform/qcom/venus/vdec_ctrls.c
index 7e0f29bf7fae..2b6b2eee619c 100644
--- a/drivers/media/platform/qcom/venus/vdec_ctrls.c
+++ b/drivers/media/platform/qcom/venus/vdec_ctrls.c
@@ -192,3 +192,4 @@ void vdec_ctrl_deinit(struct venus_inst *inst)
{
v4l2_ctrl_handler_free(&inst->ctrl_handler);
}
+EXPORT_SYMBOL_GPL(vdec_ctrl_deinit);
diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index a72681de1179..55108117d085 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -1537,28 +1537,8 @@ static int venc_close(struct file *file)
struct venus_inst *inst = to_inst(file);
venc_pm_get(inst);
-
- /*
- * First, remove the inst from the ->instances list, so that
- * to_instance() will return NULL.
- */
- hfi_session_destroy(inst);
- /*
- * Second, make sure we don't have IRQ/IRQ-thread currently running
- * or pending execution, which would race with the inst destruction.
- */
- synchronize_irq(inst->core->irq);
-
- v4l2_m2m_ctx_release(inst->m2m_ctx);
- v4l2_m2m_release(inst->m2m_dev);
- v4l2_fh_del(&inst->fh);
- v4l2_fh_exit(&inst->fh);
- venc_ctrl_deinit(inst);
-
+ venus_close_common(inst);
inst->enc_state = VENUS_ENC_STATE_DEINIT;
- mutex_destroy(&inst->lock);
- mutex_destroy(&inst->ctx_q_lock);
-
venc_pm_put(inst, false);
kfree(inst);
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