drm/i915/selftests: Let igt_vma_partial et al breathe

Give the scheduler a chance to breathe by calling cond_resched() as some
of the loops may take some time on slower machines, and so catch the
attention of the watchdogs.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111196
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190723095800.2820-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/selftests/i915_vma.c b/drivers/gpu/drm/i915/selftests/i915_vma.c
index fbc79b1..a5bec0a 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/i915_vma.c
+++ b/drivers/gpu/drm/i915/selftests/i915_vma.c
@@ -193,6 +193,8 @@ static int igt_vma_create(void *arg)
                        list_del_init(&ctx->link);
                        mock_context_close(ctx);
                }
+
+               cond_resched();
        }
 
 end:
@@ -341,6 +343,8 @@ static int igt_vma_pin1(void *arg)
                                goto out;
                        }
                }
+
+               cond_resched();
        }
 
        err = 0;
@@ -597,6 +601,8 @@ static int igt_vma_rotate_remap(void *arg)
                                        }
 
                                        i915_vma_unpin(vma);
+
+                                       cond_resched();
                                }
                        }
                }
@@ -752,6 +758,8 @@ static int igt_vma_partial(void *arg)
 
                                i915_vma_unpin(vma);
                                nvma++;
+
+                               cond_resched();
                        }
                }
 
@@ -961,6 +969,8 @@ static int igt_vma_remapped_gtt(void *arg)
                                }
                        }
                        i915_vma_unpin_iomap(vma);
+
+                       cond_resched();
                }
        }