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drm/i915: Capture module parameters for the GPU error state 

They include useful material such as what mode the VM address space is
running in, what submission mode, extra quirks, etc.

v2: Undef the right macro, use type specific pretty printers
v3: Use strcmp(TYPENAME) rather than creating per-type pretty printers
v4: Use __always_inline to force GCC to eliminate the calls to strcmp and
generate the right call to seq_printf for each parameter.
v5: With the strcmp elimination, we can now use BUILD_BUG to ensure
there are no unhandled types, also use __builtin_strcmp to make it look
even more magic.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Mika Kuoppala <mika.kuoppala@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170206213608.31328-3-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-02-06 21:36:07 +00:00
parent 1a2010ca52
commit 642c8a7253
2 changed files with 36 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -904,6 +904,7 @@ struct drm_i915_error_state {
u32 reset_count;
u32 suspend_count;
struct intel_device_info device_info;
struct i915_params params;
/* Generic register state */
u32 eir;

42
drivers/gpu/drm/i915/i915_gpu_error.c
View File

@ -546,6 +546,29 @@ static void err_print_capabilities(struct drm_i915_error_state_buf *m,
#undef PRINT_FLAG
}
static __always_inline void err_print_param(struct drm_i915_error_state_buf *m,
const char *name,
const char *type,
const void *x)
{
if (!__builtin_strcmp(type, "bool"))
err_printf(m, "i915.%s=%s\n", name, yesno(*(const bool *)x));
else if (!__builtin_strcmp(type, "int"))
err_printf(m, "i915.%s=%d\n", name, *(const int *)x);
else if (!__builtin_strcmp(type, "unsigned int"))
err_printf(m, "i915.%s=%u\n", name, *(const unsigned int *)x);
else
BUILD_BUG();
}
static void err_print_params(struct drm_i915_error_state_buf *m,
const struct i915_params *p)
{
#define PRINT(T, x) err_print_param(m, #x, #T, &p->x);
I915_PARAMS_FOR_EACH(PRINT);
#undef PRINT
}
int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
const struct i915_error_state_file_priv *error_priv)
{
@ -568,7 +591,6 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
error->boottime.tv_sec, error->boottime.tv_usec);
err_printf(m, "Uptime: %ld s %ld us\n",
error->uptime.tv_sec, error->uptime.tv_usec);
err_print_capabilities(m, &error->device_info);
for (i = 0; i < ARRAY_SIZE(error->engine); i++) {
if (error->engine[i].hangcheck_stalled &&
@ -588,6 +610,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
err_printf(m, "PCI Subsystem: %04x:%04x\n",
pdev->subsystem_vendor,
pdev->subsystem_device);
err_printf(m, "IOMMU enabled?: %d\n", error->iommu);
if (HAS_CSR(dev_priv)) {
@ -730,6 +753,9 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
if (error->display)
intel_display_print_error_state(m, dev_priv, error->display);
err_print_capabilities(m, &error->device_info);
err_print_params(m, &error->params);
out:
if (m->bytes == 0 && m->err)
return m->err;
@ -1587,6 +1613,14 @@ static int capture(void *data)
{
struct drm_i915_error_state *error = data;
do_gettimeofday(&error->time);
error->boottime = ktime_to_timeval(ktime_get_boottime());
error->uptime =
ktime_to_timeval(ktime_sub(ktime_get(),
error->i915->gt.last_init_time));
error->params = i915;
i915_capture_gen_state(error->i915, error);
i915_capture_reg_state(error->i915, error);
i915_gem_record_fences(error->i915, error);
@ -1595,12 +1629,6 @@ static int capture(void *data)
i915_capture_pinned_buffers(error->i915, error);
i915_gem_capture_guc_log_buffer(error->i915, error);
do_gettimeofday(&error->time);
error->boottime = ktime_to_timeval(ktime_get_boottime());
error->uptime =
ktime_to_timeval(ktime_sub(ktime_get(),
error->i915->gt.last_init_time));
error->overlay = intel_overlay_capture_error_state(error->i915);
error->display = intel_display_capture_error_state(error->i915);