diff options
Diffstat (limited to 'kernel/main.c')
| -rw-r--r-- | kernel/main.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/kernel/main.c b/kernel/main.c index a034b44..0e9452b 100644 --- a/kernel/main.c +++ b/kernel/main.c @@ -3097,6 +3097,38 @@ module_param_cb(sema_vidmem_dump, &nv_vgpu_sema_vidmem_dump_ops, NULL, 0200); MODULE_PARM_DESC(sema_vidmem_dump, "Dump emulated vidmem (addr,len) to the kernel log"); /* + * X/GL frame-pacer mirror (SESSION 148 perf): mirror the X server's + * submitted-byte counter (guest PA) into its GPU-progress word (guest PA) + * so the driver's per-frame 10 s wait completes in milliseconds. + * echo 0x112345678,0x112345000 > .../parameters/sema_xw_mirror + * echo 0,0 > .../parameters/sema_xw_mirror (stop) + */ +static int nv_vgpu_sema_xw_mirror_set(const char *val, + const struct kernel_param *kp) +{ + char buf[64]; + char *comma; + u64 cnt = 0, mem = 0; + + strscpy(buf, val, sizeof(buf)); + comma = strchr(buf, ','); + if (!comma) + return -EINVAL; + *comma = '\0'; + if (kstrtoull(buf, 0, &cnt) || kstrtoull(comma + 1, 0, &mem)) + return -EINVAL; + + return gsp_sema_service_xw_mirror(cnt, mem); +} + +static const struct kernel_param_ops nv_vgpu_sema_xw_mirror_ops = { + .set = nv_vgpu_sema_xw_mirror_set, +}; + +module_param_cb(sema_xw_mirror, &nv_vgpu_sema_xw_mirror_ops, NULL, 0200); +MODULE_PARM_DESC(sema_xw_mirror, "Mirror X frame counter (cnt_pa,mem_pa; 0,0=stop)"); + +/* * Debug: search the whole emulated vidmem for an 8-byte pattern: * echo 0x0000000400000001,16 > .../parameters/sema_vidmem_find */ |