Am 24.08.23 um 18:25 schrieb André Almeida:
Merge all developer debug options available as separated module
parameters in one, making it obvious that are for developers.
Signed-off-by: André Almeida <andrealmeid@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 24 ++++++++++++++++++++++++
drivers/gpu/drm/amd/include/amd_shared.h | 9 +++++++++
2 files changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index f5856b82605e..d53e4097acc0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -194,6 +194,7 @@ int amdgpu_use_xgmi_p2p = 1;
int amdgpu_vcnfw_log;
int amdgpu_sg_display = -1; /* auto */
int amdgpu_user_partt_mode = AMDGPU_AUTO_COMPUTE_PARTITION_MODE;
+uint amdgpu_debug_mask;
static void amdgpu_drv_delayed_reset_work_handler(struct work_struct *work);
@@ -938,6 +939,9 @@ module_param_named(user_partt_mode, amdgpu_user_partt_mode, uint, 0444);
module_param(enforce_isolation, bool, 0444);
MODULE_PARM_DESC(enforce_isolation, "enforce process isolation between graphics and compute . enforce_isolation = on");
+MODULE_PARM_DESC(debug_mask, "debug options for amdgpu, disabled by default");
+module_param_named(debug_mask, amdgpu_debug_mask, uint, 0444);
+
/* These devices are not supported by amdgpu.
* They are supported by the mach64, r128, radeon drivers
*/
@@ -2871,6 +2875,24 @@ static struct pci_driver amdgpu_kms_pci_driver = {
.dev_groups = amdgpu_sysfs_groups,
};
+static void amdgpu_init_debug_options(void)
+{
+ if (amdgpu_debug_mask & DEBUG_VERBOSE_EVICTIONS) {
+ pr_info("debug: eviction debug messages enabled\n");
+ debug_evictions = true;
+ }
+
+ if (amdgpu_debug_mask & DEBUG_VM) {
+ pr_info("debug: VM handling debug enabled\n");
+ amdgpu_vm_debug = true;
+ }
+
+ if (amdgpu_debug_mask & DEBUG_LARGEBAR) {
+ pr_info("debug: enabled simulating large-bar capability on non-large bar system\n");
+ debug_largebar = true;
How should that work???
+ }
+}
+
static int __init amdgpu_init(void)
{
int r;
@@ -2893,6 +2915,8 @@ static int __init amdgpu_init(void)
/* Ignore KFD init failures. Normal when CONFIG_HSA_AMD is not set. */
amdgpu_amdkfd_init();
+ amdgpu_init_debug_options();
+
/* let modprobe override vga console setting */
return pci_register_driver(&amdgpu_kms_pci_driver);
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
index 67d7b7ee8a2a..6fa644c249a5 100644
--- a/drivers/gpu/drm/amd/include/amd_shared.h
+++ b/drivers/gpu/drm/amd/include/amd_shared.h
@@ -257,6 +257,15 @@ enum DC_DEBUG_MASK {
enum amd_dpm_forced_level;
+/*
+ * amdgpu.debug module options. Are all disabled by default
+ */
+enum AMDGPU_DEBUG_MASK {
+ DEBUG_VERBOSE_EVICTIONS = (1 << 0), // 0x1
+ DEBUG_VM = (1 << 1), // 0x2
+ DEBUG_LARGEBAR = (1 << 2), // 0x4
Good start, but please give the symbol names an AMDGPU_ prefix. Stuff
like DEBUG_VM is just way to general and could clash.
Apart from that comments on the same line and using // style comments
are frowned upon. You should probably rather use the BIT() macro here.
Regards,
Christian.
+
/**
* struct amd_ip_funcs - general hooks for managing amdgpu IP Blocks
* @name: Name of IP block
