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drm/i915: move gpu error debugfs to i915_gpu_error.c

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Hide gpu error specifics in i915_gpu_error.c. This is also cleaner wrt
conditional compilation, as i915_gpu_error.c is only built with
DRM_I915_CAPTURE_ERROR=y.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231031124502.1772160-2-jani.nikula@intel.com
This commit is contained in:
Jani Nikula
2023-10-31 14:45:01 +02:00
parent 2efb81e587
commit 4fca519843
3 changed files with 119 additions and 108 deletions
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108
drivers/gpu/drm/i915/i915_debugfs.c
View File

@@ -49,6 +49,7 @@
#include "i915_debugfs.h"
#include "i915_debugfs_params.h"
#include "i915_driver.h"
#include "i915_gpu_error.h"
#include "i915_irq.h"
#include "i915_reg.h"
#include "i915_scheduler.h"
@@ -297,107 +298,6 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
return 0;
}
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
static ssize_t gpu_state_read(struct file *file, char __user *ubuf,
size_t count, loff_t *pos)
{
struct i915_gpu_coredump *error;
ssize_t ret;
void *buf;
error = file->private_data;
if (!error)
return 0;
/* Bounce buffer required because of kernfs __user API convenience. */
buf = kmalloc(count, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = i915_gpu_coredump_copy_to_buffer(error, buf, *pos, count);
if (ret <= 0)
goto out;
if (!copy_to_user(ubuf, buf, ret))
*pos += ret;
else
ret = -EFAULT;
out:
kfree(buf);
return ret;
}
static int gpu_state_release(struct inode *inode, struct file *file)
{
i915_gpu_coredump_put(file->private_data);
return 0;
}
static int i915_gpu_info_open(struct inode *inode, struct file *file)
{
struct drm_i915_private *i915 = inode->i_private;
struct i915_gpu_coredump *gpu;
intel_wakeref_t wakeref;
gpu = NULL;
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
gpu = i915_gpu_coredump(to_gt(i915), ALL_ENGINES, CORE_DUMP_FLAG_NONE);
if (IS_ERR(gpu))
return PTR_ERR(gpu);
file->private_data = gpu;
return 0;
}
static const struct file_operations i915_gpu_info_fops = {
.owner = THIS_MODULE,
.open = i915_gpu_info_open,
.read = gpu_state_read,
.llseek = default_llseek,
.release = gpu_state_release,
};
static ssize_t
i915_error_state_write(struct file *filp,
const char __user *ubuf,
size_t cnt,
loff_t *ppos)
{
struct i915_gpu_coredump *error = filp->private_data;
if (!error)
return 0;
drm_dbg(&error->i915->drm, "Resetting error state\n");
i915_reset_error_state(error->i915);
return cnt;
}
static int i915_error_state_open(struct inode *inode, struct file *file)
{
struct i915_gpu_coredump *error;
error = i915_first_error_state(inode->i_private);
if (IS_ERR(error))
return PTR_ERR(error);
file->private_data = error;
return 0;
}
static const struct file_operations i915_error_state_fops = {
.owner = THIS_MODULE,
.open = i915_error_state_open,
.read = gpu_state_read,
.write = i915_error_state_write,
.llseek = default_llseek,
.release = gpu_state_release,
};
#endif
static int i915_frequency_info(struct seq_file *m, void *unused)
{
struct drm_i915_private *i915 = node_to_i915(m->private);
@@ -837,10 +737,6 @@ static const struct i915_debugfs_files {
{"i915_perf_noa_delay", &i915_perf_noa_delay_fops},
{"i915_wedged", &i915_wedged_fops},
{"i915_gem_drop_caches", &i915_drop_caches_fops},
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
{"i915_error_state", &i915_error_state_fops},
{"i915_gpu_info", &i915_gpu_info_fops},
#endif
};
void i915_debugfs_register(struct drm_i915_private *dev_priv)
@@ -863,4 +759,6 @@ void i915_debugfs_register(struct drm_i915_private *dev_priv)
drm_debugfs_create_files(i915_debugfs_list,
ARRAY_SIZE(i915_debugfs_list),
minor->debugfs_root, minor);
i915_gpu_error_debugfs_register(dev_priv);
}

111
drivers/gpu/drm/i915/i915_gpu_error.c
View File

@@ -2137,7 +2137,7 @@ __i915_gpu_coredump(struct intel_gt *gt, intel_engine_mask_t engine_mask, u32 du
return error;
}
struct i915_gpu_coredump *
static struct i915_gpu_coredump *
i915_gpu_coredump(struct intel_gt *gt, intel_engine_mask_t engine_mask, u32 dump_flags)
{
static DEFINE_MUTEX(capture_mutex);
@@ -2375,3 +2375,112 @@ void intel_klog_error_capture(struct intel_gt *gt,
drm_info(&i915->drm, "[Capture/%d.%d] Dumped %zd bytes\n", l_count, line++, pos_err);
}
#endif
static ssize_t gpu_state_read(struct file *file, char __user *ubuf,
size_t count, loff_t *pos)
{
struct i915_gpu_coredump *error;
ssize_t ret;
void *buf;
error = file->private_data;
if (!error)
return 0;
/* Bounce buffer required because of kernfs __user API convenience. */
buf = kmalloc(count, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = i915_gpu_coredump_copy_to_buffer(error, buf, *pos, count);
if (ret <= 0)
goto out;
if (!copy_to_user(ubuf, buf, ret))
*pos += ret;
else
ret = -EFAULT;
out:
kfree(buf);
return ret;
}
static int gpu_state_release(struct inode *inode, struct file *file)
{
i915_gpu_coredump_put(file->private_data);
return 0;
}
static int i915_gpu_info_open(struct inode *inode, struct file *file)
{
struct drm_i915_private *i915 = inode->i_private;
struct i915_gpu_coredump *gpu;
intel_wakeref_t wakeref;
gpu = NULL;
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
gpu = i915_gpu_coredump(to_gt(i915), ALL_ENGINES, CORE_DUMP_FLAG_NONE);
if (IS_ERR(gpu))
return PTR_ERR(gpu);
file->private_data = gpu;
return 0;
}
static const struct file_operations i915_gpu_info_fops = {
.owner = THIS_MODULE,
.open = i915_gpu_info_open,
.read = gpu_state_read,
.llseek = default_llseek,
.release = gpu_state_release,
};
static ssize_t
i915_error_state_write(struct file *filp,
const char __user *ubuf,
size_t cnt,
loff_t *ppos)
{
struct i915_gpu_coredump *error = filp->private_data;
if (!error)
return 0;
drm_dbg(&error->i915->drm, "Resetting error state\n");
i915_reset_error_state(error->i915);
return cnt;
}
static int i915_error_state_open(struct inode *inode, struct file *file)
{
struct i915_gpu_coredump *error;
error = i915_first_error_state(inode->i_private);
if (IS_ERR(error))
return PTR_ERR(error);
file->private_data = error;
return 0;
}
static const struct file_operations i915_error_state_fops = {
.owner = THIS_MODULE,
.open = i915_error_state_open,
.read = gpu_state_read,
.write = i915_error_state_write,
.llseek = default_llseek,
.release = gpu_state_release,
};
void i915_gpu_error_debugfs_register(struct drm_i915_private *i915)
{
struct drm_minor *minor = i915->drm.primary;
debugfs_create_file("i915_error_state", 0644, minor->debugfs_root, i915,
&i915_error_state_fops);
debugfs_create_file("i915_gpu_info", 0644, minor->debugfs_root, i915,
&i915_gpu_info_fops);
}

8
drivers/gpu/drm/i915/i915_gpu_error.h
View File

@@ -276,8 +276,6 @@ static inline void intel_klog_error_capture(struct intel_gt *gt,
__printf(2, 3)
void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...);
struct i915_gpu_coredump *i915_gpu_coredump(struct intel_gt *gt,
intel_engine_mask_t engine_mask, u32 dump_flags);
void i915_capture_error_state(struct intel_gt *gt,
intel_engine_mask_t engine_mask, u32 dump_flags);
@@ -329,6 +327,8 @@ struct i915_gpu_coredump *i915_first_error_state(struct drm_i915_private *i915);
void i915_reset_error_state(struct drm_i915_private *i915);
void i915_disable_error_state(struct drm_i915_private *i915, int err);
void i915_gpu_error_debugfs_register(struct drm_i915_private *i915);
#else
__printf(2, 3)
@@ -411,6 +411,10 @@ static inline void i915_disable_error_state(struct drm_i915_private *i915,
{
}
static inline void i915_gpu_error_debugfs_register(struct drm_i915_private *i915)
{
}
#endif /* IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) */
#endif /* _I915_GPU_ERROR_H_ */