diff options
| -rw-r--r-- | drivers/gpu/drm/panthor/panthor_fw.c | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/panthor/panthor_trace.h | 28 |
2 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panthor/panthor_fw.c b/drivers/gpu/drm/panthor/panthor_fw.c index 0e46625f7621..5a904ca64525 100644 --- a/drivers/gpu/drm/panthor/panthor_fw.c +++ b/drivers/gpu/drm/panthor/panthor_fw.c @@ -26,6 +26,7 @@ #include "panthor_mmu.h" #include "panthor_regs.h" #include "panthor_sched.h" +#include "panthor_trace.h" #define CSF_FW_NAME "mali_csffw.bin" @@ -1060,6 +1061,12 @@ static void panthor_fw_init_global_iface(struct panthor_device *ptdev) static void panthor_job_irq_handler(struct panthor_device *ptdev, u32 status) { + u32 duration; + u64 start = 0; + + if (tracepoint_enabled(gpu_job_irq)) + start = ktime_get_ns(); + gpu_write(ptdev, JOB_INT_CLEAR, status); if (!ptdev->fw->booted && (status & JOB_INT_GLOBAL_IF)) @@ -1072,6 +1079,12 @@ static void panthor_job_irq_handler(struct panthor_device *ptdev, u32 status) return; panthor_sched_report_fw_events(ptdev, status); + + if (tracepoint_enabled(gpu_job_irq) && start) { + if (check_sub_overflow(ktime_get_ns(), start, &duration)) + duration = U32_MAX; + trace_gpu_job_irq(ptdev->base.dev, status, duration); + } } PANTHOR_IRQ_HANDLER(job, JOB, panthor_job_irq_handler); diff --git a/drivers/gpu/drm/panthor/panthor_trace.h b/drivers/gpu/drm/panthor/panthor_trace.h index 5bd420894745..6ffeb4fe6599 100644 --- a/drivers/gpu/drm/panthor/panthor_trace.h +++ b/drivers/gpu/drm/panthor/panthor_trace.h @@ -48,6 +48,34 @@ TRACE_EVENT_FN(gpu_power_status, panthor_hw_power_status_register, panthor_hw_power_status_unregister ); +/** + * gpu_job_irq - called after a job interrupt from firmware completes + * @dev: pointer to the &struct device, for printing the device name + * @events: bitmask of BIT(CSG id) | BIT(31) for a global event + * @duration_ns: Nanoseconds between job IRQ handler entry and exit + * + * The panthor_job_irq_handler() function instrumented by this tracepoint exits + * once it has queued the firmware interrupts for processing, not when the + * firmware interrupts are fully processed. This tracepoint allows for debugging + * issues with delays in the workqueue's processing of events. + */ +TRACE_EVENT(gpu_job_irq, + TP_PROTO(const struct device *dev, u32 events, u32 duration_ns), + TP_ARGS(dev, events, duration_ns), + TP_STRUCT__entry( + __string(dev_name, dev_name(dev)) + __field(u32, events) + __field(u32, duration_ns) + ), + TP_fast_assign( + __assign_str(dev_name); + __entry->events = events; + __entry->duration_ns = duration_ns; + ), + TP_printk("%s: events=0x%x duration_ns=%d", __get_str(dev_name), + __entry->events, __entry->duration_ns) +); + #endif /* __PANTHOR_TRACE_H__ */ #undef TRACE_INCLUDE_PATH |