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authorMika Kuoppala <mika.kuoppala@linux.intel.com>2016-12-14 14:26:20 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-09 08:32:26 +0100
commit8ed8791885aa14d545d8d5429f2be560c19addd2 (patch)
tree50c3f7245d0700a8a83659aeaa1f461ff3129a2f
parent18a00ac6d7f106901356e1fa9c082730a2318ed5 (diff)
drm/i915: Fix setting of boost freq tunable
commit b1b7ec985805e005055d1d471ca586a715ffc10a upstream. For limiting the max frequency of gpu, the max freq tunable is not enough to hard limit the max gap. We now have also per client boost max freq. When this tunable was introduced, it was mistakenly made read only. Allow user to gain control by setting it writable. Fixes: 29ecd78d3b79 ("drm/i915: Define a separate variable and control for RPS waitboost frequency") Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1481718380-9170-1-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 73a798711314b54cbd4fe224e24db92c306a8d8c) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/gpu/drm/i915/i915_sysfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 1012eeea1324..306fc54c161b 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -460,7 +460,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL);
static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL);
-static DEVICE_ATTR(gt_boost_freq_mhz, S_IRUGO, gt_boost_freq_mhz_show, gt_boost_freq_mhz_store);
+static DEVICE_ATTR(gt_boost_freq_mhz, S_IRUGO | S_IWUSR, gt_boost_freq_mhz_show, gt_boost_freq_mhz_store);
static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store);
static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store);