Re: linux-next: manual merge of the usb tree with the drm-intel-fixes tree

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Hi all,

On Tue, 31 Jan 2023 10:27:29 -0800 John Harrison <john.c.harrison@xxxxxxxxx> wrote:
>
> On 1/31/2023 04:44, Andy Shevchenko wrote:
> > On Tue, Jan 31, 2023 at 01:03:05PM +1100, Stephen Rothwell wrote:  
> >>
> >> Today's linux-next merge of the usb tree got a conflict in:
> >>
> >>    drivers/gpu/drm/i915/gt/intel_engine_cs.c
> >>
> >> between commit:
> >>
> >>    5bc4b43d5c6c ("drm/i915: Fix up locking around dumping requests lists")
> >>
> >> from the drm-intel-fixes tree and commit:
> >>
> >>    4d70c74659d9 ("i915: Move list_count() to list.h as list_count_nodes() for broader use")
> >>
> >> from the usb tree.
> >>
> >> I fixed it up (the former removed the code changed by the latter)  
> > Hmm... Currently I see that 20230127002842.3169194-4-John.C.Harrison@xxxxxxxxx
> > moves the code to the drivers/gpu/drm/i915/gt/intel_execlists_submission.c.
> >
> > Is there any new series beside the above mentioned that touches that file and
> > actually _removes_ that code?  
> As long as the removal is limited to list_count/list_count_nodes,
> that's fine. I only moved it from one file to another because the one
> and only function that was using it was being moved to the other
> file. If someone else has found a use for the same and wants to move
> it to a more common place then great. I assume there was no conflict
> happening in the i915 specific code.

I have added this fix up patch to linux-next today (more or less - this
is a hand hacked version, but you get the idea):

From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Date: Wed, 1 Feb 2023 13:13:01 +1100
Subject: [PATCH] i915: fix up for "drm/i915: Fix up locking around dumping requests lists"

interacting with "i915: Move list_count() to list.h as list_count_nodes() for broader use"

Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
---
 .../gpu/drm/i915/gt/intel_execlists_submission.c    | 15 +------------
 1 file changed, 2 insertion(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 3c573d41d404..e919d41a48d9 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -4150,17 +4150,6 @@ void intel_execlists_show_requests(struct intel_engine_cs *engine,
 	spin_unlock_irqrestore(&sched_engine->lock, flags);
 }
 
-static unsigned long list_count(struct list_head *list)
-{
-	struct list_head *pos;
-	unsigned long count = 0;
-
-	list_for_each(pos, list)
-		count++;
-
-	return count;
-}
-
 void intel_execlists_dump_active_requests(struct intel_engine_cs *engine,
 					  struct i915_request *hung_rq,
 					  struct drm_printer *m)
@@ -4172,7 +4161,7 @@ void intel_execlists_dump_active_requests(struct intel_engine_cs *engine,
 	intel_engine_dump_active_requests(&engine->sched_engine->requests, hung_rq, m);
 
-	drm_printf(m, "\tOn hold?: %lu\n",
-		   list_count(&engine->sched_engine->hold));
+	drm_printf(m, "\tOn hold?: %zu\n",
+		   list_count_nodes(&engine->sched_engine->hold));
 
 	spin_unlock_irqrestore(&engine->sched_engine->lock, flags);
 }
-- 
2.35.1

-- 
Cheers,
Stephen Rothwell

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