[i-g-t,11/11] gem_wsim: Do not keep batch mapped unless needed
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Message ID 20200618104747.24005-11-tvrtko.ursulin@linux.intel.com
State New
Headers show
Series
  • [i-g-t,01/11] gem_wsim: Rip out userspace balancing
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Commit Message

Tvrtko Ursulin June 18, 2020, 10:47 a.m. UTC
From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

At this point we only need to keep the mapping for infinite batch buffers.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 benchmarks/gem_wsim.c | 5 +++++
 1 file changed, 5 insertions(+)

Patch
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diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
index 811a4b1b7161..496e5042d89c 100644
--- a/benchmarks/gem_wsim.c
+++ b/benchmarks/gem_wsim.c
@@ -1449,6 +1449,7 @@  static unsigned int terminate_bb(struct w_step *w)
 	const uint32_t bbe = 0xa << 23;
 	unsigned long mmap_start, mmap_len;
 	unsigned long batch_start = w->bb_sz;
+	bool keep_mmap = false;
 	unsigned int r = 0;
 	uint32_t *ptr, *cs;
 
@@ -1472,6 +1473,7 @@  static unsigned int terminate_bb(struct w_step *w)
 
 		*cs++ = w->preempt_us ? 0x5 << 23 /* MI_ARB_CHK; */ : MI_NOOP;
 		w->recursive_bb_start = cs;
+		keep_mmap = true;
 		*cs++ = MI_BATCH_BUFFER_START | 1 << 8 | 1;
 		*cs++ = 0;
 		*cs++ = 0;
@@ -1479,6 +1481,9 @@  static unsigned int terminate_bb(struct w_step *w)
 
 	*cs = bbe;
 
+	if (!keep_mmap)
+		munmap(ptr, mmap_len);
+
 	return r;
 }