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drm/i915: Use snprintf to avoid line-break when pretty-printing engines 

When printing the execlist ports, we first print the ELSP header then
follow it with the pretty-printed request. Since switching to
drm_printer and show the output via printk, it automatically appends a
newline to each call (unlike the old seq_printf output). To avoid the
unwanted line break, construct the ELSP request header in a temporary
buffer.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171208012303.25504-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-12-08 01:22:59 +00:00
parent 6647852abc
commit e8a70cab25
1 changed files with 6 additions and 5 deletions
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11
drivers/gpu/drm/i915/intel_engine_cs.c
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@ -1674,6 +1674,7 @@ void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m)
struct drm_i915_private *dev_priv = engine->i915;
struct drm_i915_gem_request *rq;
struct rb_node *rb;
char hdr[80];
u64 addr;
drm_printf(m, "%s\n", engine->name);
@ -1786,12 +1787,12 @@ void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m)
rq = port_unpack(&execlists->port[idx], &count);
if (rq) {
drm_printf(m, "\t\tELSP[%d] count=%d, ",
idx, count);
print_request(m, rq, "rq: ");
snprintf(hdr, sizeof(hdr),
"\t\tELSP[%d] count=%d, rq: ",
idx, count);
print_request(m, rq, hdr);
} else {
drm_printf(m, "\t\tELSP[%d] idle\n",
idx);
drm_printf(m, "\t\tELSP[%d] idle\n", idx);
}
}
drm_printf(m, "\t\tHW active? 0x%x\n", execlists->active);