On 2023-11-27 14:11, Alex Deucher
wrote:
[JZ] will add, Thanks!On Fri, Nov 3, 2023 at 9:22 AM James Zhu <James.Zhu@xxxxxxx> wrote:From: David Yat Sin <david.yatsin@xxxxxxx> Add pc sampling support in kfd_ioctl. Co-developed-by: James Zhu <James.Zhu@xxxxxxx> Signed-off-by: James Zhu <James.Zhu@xxxxxxx> Signed-off-by: David Yat Sin <david.yatsin@xxxxxxx>For any new IOCTL interfaces, please provide a link to the user mode code branch which uses it in the patch description.
Thanks, Alex
--- include/uapi/linux/kfd_ioctl.h | 57 +++++++++++++++++++++++++++++++++- 1 file changed, 56 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h index f0ed68974c54..5202e29c9560 100644 --- a/include/uapi/linux/kfd_ioctl.h +++ b/include/uapi/linux/kfd_ioctl.h @@ -1446,6 +1446,58 @@ struct kfd_ioctl_dbg_trap_args { }; }; +/** + * kfd_ioctl_pc_sample_op - PC Sampling ioctl operations + * + * @KFD_IOCTL_PCS_OP_QUERY_CAPABILITIES: Query device PC Sampling capabilities + * @KFD_IOCTL_PCS_OP_CREATE: Register this process with a per-device PC sampler instance + * @KFD_IOCTL_PCS_OP_DESTROY: Unregister from a previously registered PC sampler instance + * @KFD_IOCTL_PCS_OP_START: Process begins taking samples from a previously registered PC sampler instance + * @KFD_IOCTL_PCS_OP_STOP: Process stops taking samples from a previously registered PC sampler instance + */ +enum kfd_ioctl_pc_sample_op { + KFD_IOCTL_PCS_OP_QUERY_CAPABILITIES, + KFD_IOCTL_PCS_OP_CREATE, + KFD_IOCTL_PCS_OP_DESTROY, + KFD_IOCTL_PCS_OP_START, + KFD_IOCTL_PCS_OP_STOP, +}; + +/* Values have to be a power of 2*/ +#define KFD_IOCTL_PCS_FLAG_POWER_OF_2 0x00000001 + +enum kfd_ioctl_pc_sample_method { + KFD_IOCTL_PCS_METHOD_HOSTTRAP = 1, + KFD_IOCTL_PCS_METHOD_STOCHASTIC, +}; + +enum kfd_ioctl_pc_sample_type { + KFD_IOCTL_PCS_TYPE_TIME_US, + KFD_IOCTL_PCS_TYPE_CLOCK_CYCLES, + KFD_IOCTL_PCS_TYPE_INSTRUCTIONS +}; + +struct kfd_pc_sample_info { + __u64 value; /* [IN] if PCS_TYPE_INTERVAL_US: sample interval in us + * if PCS_TYPE_CLOCK_CYCLES: sample interval in graphics core clk cycles + * if PCS_TYPE_INSTRUCTIONS: sample interval in instructions issued by + * graphics compute units + */ + __u64 value_min; /* [OUT] */ + __u64 value_max; /* [OUT] */ + __u64 flags; /* [OUT] indicate potential restrictions e.g FLAG_POWER_OF_2 */ + __u32 method; /* [IN/OUT] kfd_ioctl_pc_sample_method */ + __u32 type; /* [IN/OUT] kfd_ioctl_pc_sample_type */ +}; + +struct kfd_ioctl_pc_sample_args { + __u64 sample_info_ptr; /* array of kfd_pc_sample_info */ + __u32 num_sample_info; + __u32 op; /* kfd_ioctl_pc_sample_op */ + __u32 gpu_id; + __u32 trace_id; +}; + #define AMDKFD_IOCTL_BASE 'K' #define AMDKFD_IO(nr) _IO(AMDKFD_IOCTL_BASE, nr) #define AMDKFD_IOR(nr, type) _IOR(AMDKFD_IOCTL_BASE, nr, type) @@ -1566,7 +1618,10 @@ struct kfd_ioctl_dbg_trap_args { #define AMDKFD_IOC_DBG_TRAP \ AMDKFD_IOWR(0x26, struct kfd_ioctl_dbg_trap_args) +#define AMDKFD_IOC_PC_SAMPLE \ + AMDKFD_IOWR(0x27, struct kfd_ioctl_pc_sample_args) + #define AMDKFD_COMMAND_START 0x01 -#define AMDKFD_COMMAND_END 0x27 +#define AMDKFD_COMMAND_END 0x28 #endif -- 2.25.1
