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drm/i915: Streamline unclaimed reg debug trace 

Remove char* assignments and add branching hint and
also constify the parameters.

This results in a 35 bytes shorter fast path, so author
boldly assumes it helps without doing in-depth assembly
analysis.

v2: use WARN's branching (Chris), commit name (Joonas)

Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
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/1450189512-30360-5-git-send-email-mika.kuoppala@intel.com
This commit is contained in:
Mika Kuoppala 2015-12-15 16:25:10 +02:00 committed by Mika Kuoppala
parent 7571494004
commit 4bd0a25d9b
1 changed files with 9 additions and 9 deletions
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18
drivers/gpu/drm/i915/intel_uncore.c
View File

@ -604,19 +604,19 @@ ilk_dummy_write(struct drm_i915_private *dev_priv)
static void
hsw_unclaimed_reg_debug(struct drm_i915_private *dev_priv,
i915_reg_t reg, bool read, bool before)
const i915_reg_t reg,
const bool read,
const bool before)
{
const char *op = read ? "reading" : "writing to";
const char *when = before ? "before" : "after";
if (!i915.mmio_debug)
if (likely(!i915.mmio_debug))
return;
if (check_for_unclaimed_mmio(dev_priv)) {
WARN(1, "Unclaimed register detected %s %s register 0x%x\n",
when, op, i915_mmio_reg_offset(reg));
if (WARN(check_for_unclaimed_mmio(dev_priv),
"Unclaimed register detected %s %s register 0x%x\n",
before ? "before" : "after",
read ? "reading" : "writing to",
i915_mmio_reg_offset(reg)))
i915.mmio_debug--; /* Only report the first N failures */
}
}
#define GEN2_READ_HEADER(x) \