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lib: Refactor common detection of missed interrupts

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As we have the same function in a few places to read the
debugfs/i915_ring_missed_irq file, move it to the core.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson
2016-01-22 17:33:40 +00:00
parent e0ee36141e
commit 5b675f7b2f
5 changed files with 42 additions and 73 deletions
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tests/gem_ring_sync_loop.c
+2 -25
View File
@@ -91,39 +91,16 @@ sync_loop(int fd)
gem_close(fd, object[0].handle);
}
static unsigned intel_detect_and_clear_missed_irq(int fd)
{
unsigned missed = 0;
FILE *file;
gem_quiescent_gpu(fd);
file = igt_debugfs_fopen("i915_ring_missed_irq", "r");
if (file) {
igt_assert(fscanf(file, "%x", &missed) == 1);
fclose(file);
}
if (missed) {
file = igt_debugfs_fopen("i915_ring_missed_irq", "w");
if (file) {
fwrite("0\n", 1, 2, file);
fclose(file);
}
}
return missed;
}
igt_simple_main
{
int fd;
fd = drm_open_driver(DRIVER_INTEL);
igt_require(gem_get_num_rings(fd) > 1);
intel_detect_and_clear_missed_irq(fd); /* clear before we begin */
intel_detect_and_clear_missed_interrupts(fd);
sync_loop(fd);
igt_assert_eq(intel_detect_and_clear_missed_irq(fd), 0);
igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0);
close(fd);
}