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This is >> expected behavior, not an actionable error. Avoid logging these as >> errors in the engine activity and power profile code paths. >> >> Signed-off-by: Sk Anirban >> --- >>  drivers/gpu/drm/xe/xe_guc_engine_activity.c | 8 +++++--- >>  drivers/gpu/drm/xe/xe_guc_engine_activity.h | 2 +- >>  drivers/gpu/drm/xe/xe_guc_pc.c              | 4 ++-- >>  drivers/gpu/drm/xe/xe_uc.c                  | 5 ++++- >>  4 files changed, 12 insertions(+), 7 deletions(-) >> >> diff --git a/drivers/gpu/drm/xe/xe_guc_engine_activity.c >> b/drivers/gpu/drm/xe/xe_guc_engine_activity.c >> index 2b99c1ebdd58..700f3464fb63 100644 >> --- a/drivers/gpu/drm/xe/xe_guc_engine_activity.c >> +++ b/drivers/gpu/drm/xe/xe_guc_engine_activity.c >> @@ -464,18 +464,20 @@ int >> xe_guc_engine_activity_function_stats(struct xe_guc *guc, int >> num_vfs, bool >>   * >>   * Enable engine activity stats and set initial timestamps >>   */ >> -void xe_guc_engine_activity_enable_stats(struct xe_guc *guc) >> +int xe_guc_engine_activity_enable_stats(struct xe_guc *guc) >>  { >>         int ret; >> >>         if (!xe_guc_engine_activity_supported(guc)) >> -               return; >> +               return 0; >> >>         ret = enable_engine_activity_stats(guc); >> -       if (ret) >> +       if (ret && !(xe_device_wedged(guc_to_xe(guc)) && ret == - >> ECANCELED)) > Is there a reason we don't handle all of the cases described in > __guc_ct_send_locked()? It looks like before we do the ct->state == > STOPPED check (which is where we'd return -ECANCELED), we also check if > the CT is broken (i.e. we got some bad return value from GuC and marked > CT as "dead", hence returning -EPIPE here) or disabled (and return - > ENODEV). > > Same question for the other cases you have below. > > Thanks, > Stuart -ECANCELED is the specific error returned when the CT is stopped & device is wedged. Other errors may indicate different fault conditions and imo should be useful to log those. This follows the same pattern as pc_action_reset. Thanks, Anirban > >>                 xe_gt_err(guc_to_gt(guc), "failed to enable activity >> stats%d\n", ret); >>         else >>                 engine_activity_set_cpu_ts(guc, 0); >> + >> +       return ret; >>  } >> >>  static void engine_activity_fini(void *arg) >> diff --git a/drivers/gpu/drm/xe/xe_guc_engine_activity.h >> b/drivers/gpu/drm/xe/xe_guc_engine_activity.h >> index b32926c2d208..188f325a462d 100644 >> --- a/drivers/gpu/drm/xe/xe_guc_engine_activity.h >> +++ b/drivers/gpu/drm/xe/xe_guc_engine_activity.h >> @@ -13,7 +13,7 @@ struct xe_guc; >> >>  int xe_guc_engine_activity_init(struct xe_guc *guc); >>  bool xe_guc_engine_activity_supported(struct xe_guc *guc); >> -void xe_guc_engine_activity_enable_stats(struct xe_guc *guc); >> +int xe_guc_engine_activity_enable_stats(struct xe_guc *guc); >>  int xe_guc_engine_activity_function_stats(struct xe_guc *guc, int >> num_vfs, bool enable); >>  u64 xe_guc_engine_activity_active_ticks(struct xe_guc *guc, struct >> xe_hw_engine *hwe, >>                                         unsigned int fn_id); >> diff --git a/drivers/gpu/drm/xe/xe_guc_pc.c >> b/drivers/gpu/drm/xe/xe_guc_pc.c >> index 7ecd91ad6192..efcd432ef6ef 100644 >> --- a/drivers/gpu/drm/xe/xe_guc_pc.c >> +++ b/drivers/gpu/drm/xe/xe_guc_pc.c >> @@ -1202,7 +1202,7 @@ int xe_guc_pc_set_power_profile(struct >> xe_guc_pc *pc, const char *buf) >>         ret = pc_action_set_param(pc, >>                                   SLPC_PARAM_POWER_PROFILE, >>                                   val); >> -       if (ret) >> +       if (ret && !(xe_device_wedged(pc_to_xe(pc)) && ret == - >> ECANCELED)) >>                 xe_gt_err_once(pc_to_gt(pc), "Failed to set power >> profile to %d: %pe\n", >>                                val, ERR_PTR(ret)); >>         else >> @@ -1306,7 +1306,7 @@ int xe_guc_pc_start(struct xe_guc_pc *pc) >> >>         /* Set cached value of power_profile */ >>         ret = xe_guc_pc_set_power_profile(pc, >> power_profile_to_string(pc)); >> -       if (unlikely(ret)) >> +       if (ret && !(xe_device_wedged(xe) && ret == -ECANCELED)) >>                 xe_gt_err(gt, "Failed to set SLPC power profile: >> %pe\n", ERR_PTR(ret)); >> >>         return ret; >> diff --git a/drivers/gpu/drm/xe/xe_uc.c b/drivers/gpu/drm/xe/xe_uc.c >> index 75091bde0d50..b440cf8c431d 100644 >> --- a/drivers/gpu/drm/xe/xe_uc.c >> +++ b/drivers/gpu/drm/xe/xe_uc.c >> @@ -215,7 +215,10 @@ int xe_uc_load_hw(struct xe_uc *uc) >>         if (ret) >>                 return ret; >> >> -       xe_guc_engine_activity_enable_stats(&uc->guc); >> +       ret = xe_guc_engine_activity_enable_stats(&uc->guc); >> + >> +       if (xe_device_wedged(guc_to_xe(&uc->guc)) && ret == - >> ECANCELED) >> +               return ret; >> >>         /* We don't fail the driver load if HuC fails to auth */ >>         ret = xe_huc_auth(&uc->huc, XE_HUC_AUTH_VIA_GUC);