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Bernhard Stoeckner
2024-01-24 17:51:53 +01:00
parent bb2dac1f20
commit 91676d6628
1411 changed files with 261367 additions and 145959 deletions
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41
kernel-open/nvidia-uvm/uvm_perf_thrashing.c
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@@ -15,14 +15,14 @@
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN hint OF CONTRACT, TORT OR OTHERWISE, ARISING
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*******************************************************************************/
#include "uvm_api.h"
#include "uvm_conf_computing.h"
#include "uvm_global.h"
#include "uvm_perf_events.h"
#include "uvm_perf_module.h"
#include "uvm_perf_thrashing.h"
@@ -263,7 +263,6 @@ static unsigned uvm_perf_thrashing_pin_threshold = UVM_PERF_THRASHING_PIN_THRESH
// detection/prevention parameters
#define UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT 500
#define UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT_EMULATION (UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT * 800)
#define UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT_HCC (UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT * 10)
// Lapse of time in microseconds that determines if two consecutive events on
// the same page can be considered thrashing
@@ -1951,30 +1950,14 @@ void uvm_perf_thrashing_unload(uvm_va_space_t *va_space)
}
}
NV_STATUS uvm_perf_thrashing_register_gpu(uvm_va_space_t *va_space, uvm_gpu_t *gpu)
void uvm_perf_thrashing_register_gpu(uvm_va_space_t *va_space, uvm_gpu_t *gpu)
{
va_space_thrashing_info_t *va_space_thrashing = va_space_thrashing_info_get(va_space);
// If a simulated GPU is registered, re-initialize thrashing parameters in
// case they need to be adjusted.
bool params_need_readjusting = g_uvm_global.num_simulated_devices > 0;
// Likewise, when the Confidential Computing feature is enabled, the DMA
// path is slower due to cryptographic operations & other associated
// overhead. Enforce a larger window to allow the thrashing mitigation
// mechanisms to work properly.
params_need_readjusting = params_need_readjusting || uvm_conf_computing_mode_enabled(gpu);
if (params_need_readjusting) {
va_space_thrashing_info_t *va_space_thrashing = va_space_thrashing_info_get(va_space);
if (!va_space_thrashing->params.test_overrides) {
if (uvm_conf_computing_mode_enabled(gpu))
g_uvm_perf_thrashing_lapse_usec = UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT_HCC;
va_space_thrashing_info_init_params(va_space_thrashing);
}
}
return NV_OK;
if ((g_uvm_global.num_simulated_devices > 0) && !va_space_thrashing->params.test_overrides)
va_space_thrashing_info_init_params(va_space_thrashing);
}
NV_STATUS uvm_perf_thrashing_init(void)
@@ -1999,7 +1982,15 @@ NV_STATUS uvm_perf_thrashing_init(void)
UVM_PERF_THRASHING_PIN_THRESHOLD_DEFAULT,
UVM_PERF_THRASHING_PIN_THRESHOLD_MAX);
INIT_THRASHING_PARAMETER_NONZERO(uvm_perf_thrashing_lapse_usec, UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT);
// In Confidential Computing, the DMA path is slower due to cryptographic
// operations & other associated overhead. Enforce a larger window to allow
// the thrashing mitigation mechanisms to work properly.
if (g_uvm_global.conf_computing_enabled)
INIT_THRASHING_PARAMETER_NONZERO(uvm_perf_thrashing_lapse_usec, UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT * 10);
else
INIT_THRASHING_PARAMETER_NONZERO(uvm_perf_thrashing_lapse_usec, UVM_PERF_THRASHING_LAPSE_USEC_DEFAULT);
INIT_THRASHING_PARAMETER_NONZERO_MAX(uvm_perf_thrashing_nap,
UVM_PERF_THRASHING_NAP_DEFAULT,