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tests/gem_close_race: Adapt the test for Full PPGTT

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With Full PPGTT, each new fd creates a new context and thus a new
PPGTT, so we have to reduce the number of simultaneous fds or face
OOM problems. For every new PPGTT, its PDEs are stored in the GGTT
which imposes a limit of 1024 new contexts. We want to leave at
least 1/4 of the GGTT available for "important" stuff like scanout
buffers, so never open more than 768 fds.

v2: Unconditionally use the lower limit, as suggested by Daniel
Vetter

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Oscar Mateo 2013-12-13 16:24:37 +00:00 committed by Daniel Vetter
parent be14c7bb04
commit 4eae05f03b
1 changed files with 2 additions and 2 deletions
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4
tests/gem_close_race.c
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@ -136,7 +136,7 @@ static void run(int child)
gem_read(fd, handle, 0, &handle, sizeof(handle));
}
#define NUM_FD 32000
#define NUM_FD 768
struct thread {
pthread_mutex_t mutex;
@ -222,7 +222,7 @@ igt_main
}
igt_subtest("process-exit") {
igt_fork(child, 2000)
igt_fork(child, NUM_FD)
run(child);
igt_waitchildren();
}