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gpu: nvgpu: add cycle stats to debugger node

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Add NVGPU_DBG_GPU_IOCTL_CYCLE_STATS to debugger node, to
install/uninstall a buffer for cycle stats.

Add NVGPU_DBG_GPU_IOCTL_CYCLE_STATS_SNAPSHOT to debugger
node, to attach/flush/detach a buffer for Mode-E streamout.

Those ioctls will apply to the first channel in the debug session.

Bug 200464613
Jira NVGPU-1442

Change-Id: I0b96d9a07c016690140292fa5886fda545697ee6
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2002060
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Thomas Fleury
2018-12-21 10:04:27 +05:30
committed by mobile promotions
parent efdcce03d3
commit 90b0bf98ac
4 changed files with 139 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

94
drivers/gpu/nvgpu/os/linux/ioctl_dbg.c
View File

@@ -42,6 +42,7 @@
#include "os_linux.h"
#include "platform_gk20a.h"
#include "ioctl_dbg.h"
#include "ioctl_channel.h"
#include "dmabuf_vidmem.h"
struct dbg_session_gk20a_linux {
@@ -1855,6 +1856,87 @@ static int nvgpu_dbg_gpu_set_sm_exception_type_mask(struct dbg_session_gk20a *db
return err;
}
#if defined(CONFIG_GK20A_CYCLE_STATS)
static int nvgpu_dbg_gpu_cycle_stats(struct dbg_session_gk20a *dbg_s,
struct nvgpu_dbg_gpu_cycle_stats_args *args)
{
struct channel_gk20a *ch = NULL;
int err;
ch = nvgpu_dbg_gpu_get_session_channel(dbg_s);
if (ch == NULL) {
return -EINVAL;
}
err = gk20a_busy(ch->g);
if (err != 0) {
return err;
}
err = gk20a_channel_cycle_stats(ch, args->dmabuf_fd);
gk20a_idle(ch->g);
return err;
}
static int nvgpu_dbg_gpu_cycle_stats_snapshot(struct dbg_session_gk20a *dbg_s,
struct nvgpu_dbg_gpu_cycle_stats_snapshot_args *args)
{
struct channel_gk20a *ch = NULL;
int err;
if (!args->dmabuf_fd) {
return -EINVAL;
}
nvgpu_speculation_barrier();
ch = nvgpu_dbg_gpu_get_session_channel(dbg_s);
if (ch == NULL) {
return -EINVAL;
}
/* is it allowed to handle calls for current GPU? */
if (!nvgpu_is_enabled(ch->g, NVGPU_SUPPORT_CYCLE_STATS_SNAPSHOT)) {
return -ENOSYS;
}
err = gk20a_busy(ch->g);
if (err != 0) {
return err;
}
/* handle the command (most frequent cases first) */
switch (args->cmd) {
case NVGPU_DBG_GPU_IOCTL_CYCLE_STATS_SNAPSHOT_CMD_FLUSH:
err = gk20a_flush_cycle_stats_snapshot(ch);
args->extra = 0;
break;
case NVGPU_DBG_GPU_IOCTL_CYCLE_STATS_SNAPSHOT_CMD_ATTACH:
err = gk20a_attach_cycle_stats_snapshot(ch,
args->dmabuf_fd,
args->extra,
&args->extra);
break;
case NVGPU_DBG_GPU_IOCTL_CYCLE_STATS_SNAPSHOT_CMD_DETACH:
err = gk20a_channel_free_cycle_stats_snapshot(ch);
args->extra = 0;
break;
default:
pr_err("cyclestats: unknown command %u\n", args->cmd);
err = -EINVAL;
break;
}
gk20a_idle(ch->g);
return err;
}
#endif
int gk20a_dbg_gpu_dev_open(struct inode *inode, struct file *filp)
{
struct nvgpu_os_linux *l = container_of(inode->i_cdev,
@@ -2011,6 +2093,18 @@ long gk20a_dbg_gpu_dev_ioctl(struct file *filp, unsigned int cmd,
(struct nvgpu_dbg_gpu_set_sm_exception_type_mask_args *)buf);
break;
#ifdef CONFIG_GK20A_CYCLE_STATS
case NVGPU_DBG_GPU_IOCTL_CYCLE_STATS:
err = nvgpu_dbg_gpu_cycle_stats(dbg_s,
(struct nvgpu_dbg_gpu_cycle_stats_args *)buf);
break;
case NVGPU_DBG_GPU_IOCTL_CYCLE_STATS_SNAPSHOT:
err = nvgpu_dbg_gpu_cycle_stats_snapshot(dbg_s,
(struct nvgpu_dbg_gpu_cycle_stats_snapshot_args *)buf);
break;
#endif
default:
nvgpu_err(g,
"unrecognized dbg gpu ioctl cmd: 0x%x",