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| author | Chris Wilson | 2017-02-18 12:27:08 +0100 |
|---|---|---|
| committer | Chris Wilson | 2017-02-20 12:03:30 +0100 |
| commit | 23f4a287fc97d94b6110ee0e17ec92670cc8de89 (patch) | |
| tree | c65b6805594d60ed9ee730df968efd82b123cfa2 /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | drm/i915: Remove unneeded struct_mutex around rpm (diff) | |
| download | kernel-qcow2-linux-23f4a287fc97d94b6110ee0e17ec92670cc8de89.tar.gz kernel-qcow2-linux-23f4a287fc97d94b6110ee0e17ec92670cc8de89.tar.xz kernel-qcow2-linux-23f4a287fc97d94b6110ee0e17ec92670cc8de89.zip | |
drm/i915: Prevent divide-by-zero in debugfs/i915_rps_boost_info
Either by chance, or by misread, the current evaluation interval may be
zero. If that is the case, don't divide by it!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170218112708.24504-1-chris@chris-wilson.co.uk
Reviewed-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 404394ef4b14..768461f7c7c6 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2356,10 +2356,10 @@ static int i915_rps_boost_info(struct seq_file *m, void *data) seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n", rps_power_to_str(dev_priv->rps.power)); seq_printf(m, " Avg. up: %d%% [above threshold? %d%%]\n", - 100 * rpup / rpupei, + rpup && rpupei ? 100 * rpup / rpupei : 0, dev_priv->rps.up_threshold); seq_printf(m, " Avg. down: %d%% [below threshold? %d%%]\n", - 100 * rpdown / rpdownei, + rpdown && rpdownei ? 100 * rpdown / rpdownei : 0, dev_priv->rps.down_threshold); } else { seq_puts(m, "\nRPS Autotuning inactive\n"); |