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gpu: nvgpu: Do not realloc perfmon sample buffer

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Allocate perfmon sample buffer only once.

Bug 1512840

Change-Id: I3f2a62b0fa28e6ba984ae3068a1d56ba461a0c29
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/408180
Reviewed-by: Thomas Cherry <tcherry@nvidia.com>
Tested-by: Thomas Cherry <tcherry@nvidia.com>
This commit is contained in:
Terje Bergstrom
2014-05-12 13:38:49 +03:00
committed by Dan Willemsen
parent 66bb831f44
commit 2b48263b1f
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
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@@ -2156,7 +2156,7 @@ static int pmu_init_perfmon(struct pmu_gk20a *pmu)
struct pmu_payload payload; struct pmu_payload payload;
u32 seq; u32 seq;
u32 data; u32 data;
int err; int err = 0;
gk20a_dbg_fn(""); gk20a_dbg_fn("");
@@ -2206,8 +2206,9 @@ static int pmu_init_perfmon(struct pmu_gk20a *pmu)
pwr_pmu_idle_ctrl_filter_disabled_f()); pwr_pmu_idle_ctrl_filter_disabled_f());
gk20a_writel(g, pwr_pmu_idle_ctrl_r(2), data); gk20a_writel(g, pwr_pmu_idle_ctrl_r(2), data);
pmu->sample_buffer = 0; if (!pmu->sample_buffer)
err = pmu->dmem.alloc(&pmu->dmem, &pmu->sample_buffer, 2 * sizeof(u16)); err = pmu->dmem.alloc(&pmu->dmem,
&pmu->sample_buffer, 2 * sizeof(u16));
if (err) { if (err) {
gk20a_err(dev_from_gk20a(g), gk20a_err(dev_from_gk20a(g),
"failed to allocate perfmon sample buffer"); "failed to allocate perfmon sample buffer");