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gpu: nvgpu: post dbg session event from os specific code

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As part of debug session unification following changes are
required.

-Including bug.h header file to fix the compilation issue
on QNX

- The mechanism of posting debug events is OS specific. In Linux
this works through poll fd, wherein we can make use of nvgpu_cond
variables to poll and trigger the corresponding wait_queue
via nvgpu_cond_broadcast_interruptible() call.

The post event functionality on QNX doesn't work on poll though.
It uses iofunc_notify_trigger to post the debug events to calling
process. As such QNX can't work with nvgpu_cond's.

To overcome this issue, it is proposed to create a OS specific
interface for posting debugger events. Linux can call
nvgpu_cond_broadcast_interruptible() in its implementation, which
makes sense since these are already initialized and poll'ed in the
Linux specific code only.
QNX can implement this interface to call iofunc_notify_* functions,
as per its need

Jira VQRM-2363

Change-Id: I0abdc0787f771040b8aff5384290d7e6549f81fb
Signed-off-by: Sourab Gupta <sourabg@nvidia.com>
Signed-off-by: Prateek Sethi <prsethi@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1696368
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Sourab Gupta
2018-04-17 09:49:01 +05:30
committed by mobile promotions
parent 86bb766e16
commit dea01d0acf
3 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/nvgpu/common/linux/ioctl_dbg.c
View File

@@ -468,6 +468,11 @@ free_ref:
return err;
}
void nvgpu_dbg_session_post_event(struct dbg_session_gk20a *dbg_s)
{
nvgpu_cond_broadcast_interruptible(&dbg_s->dbg_events.wait_queue);
}
static int dbg_unbind_single_channel_gk20a(struct dbg_session_gk20a *dbg_s,
struct dbg_session_channel_data *ch_data)
{

5
drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.c
View File

@@ -1,7 +1,7 @@
/*
* Tegra GK20A GPU Debugger/Profiler Driver
*
* Copyright (c) 2013-2017, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2013-2018, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -27,6 +27,7 @@
#include <nvgpu/vm.h>
#include <nvgpu/atomic.h>
#include <nvgpu/mm.h>
#include <nvgpu/bug.h>
#include "gk20a.h"
#include "gr_gk20a.h"
@@ -106,7 +107,7 @@ void gk20a_dbg_gpu_post_events(struct channel_gk20a *ch)
dbg_s->dbg_events.num_pending_events++;
nvgpu_cond_broadcast_interruptible(&dbg_s->dbg_events.wait_queue);
nvgpu_dbg_session_post_event(dbg_s);
}
}

3
drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.h
View File

@@ -1,7 +1,7 @@
/*
* Tegra GK20A GPU Debugger Driver
*
* Copyright (c) 2013-2017, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2013-2018, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -132,4 +132,5 @@ void nvgpu_release_profiler_reservation(struct dbg_session_gk20a *dbg_s,
int gk20a_perfbuf_enable_locked(struct gk20a *g, u64 offset, u32 size);
int gk20a_perfbuf_disable_locked(struct gk20a *g);
void nvgpu_dbg_session_post_event(struct dbg_session_gk20a *dbg_s);
#endif /* DBG_GPU_GK20A_H */