From: Arnd Bergmann <arnd@arndb.de>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: "Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@elte.hu>, "H. Peter Anvin" <hpa@zytor.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Dave Airlie" <airlied@linux.ie>,
linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
"Christian König" <christian.koenig@amd.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>
Subject: Re: linux-next: manual merge of the tip tree with the drm tree
Date: Thu, 17 Mar 2016 10:00:56 +0100 [thread overview]
Message-ID: <2913254.nLUtoX01AU@wuerfel> (raw)
In-Reply-To: <20160317130029.5569b2f4@canb.auug.org.au>
On Thursday 17 March 2016 13:00:29 Stephen Rothwell wrote:
> diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 0f42b1a24446,7b82e57aa09c..000000000000
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@@ -532,21 -516,9 +532,20 @@@ int amdgpu_ttm_tt_get_user_pages(struc
> do {
> unsigned num_pages = ttm->num_pages - pinned;
> uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE;
> - struct page **pages = ttm->pages + pinned;
> + struct page **p = pages + pinned;
> + struct amdgpu_ttm_gup_task_list guptask;
> +
> + guptask.task = current;
> + spin_lock(>t->guptasklock);
> + list_add(&guptask.list, >t->guptasks);
> + spin_unlock(>t->guptasklock);
>
> - r = get_user_pages(current, current->mm, userptr, num_pages,
> - write, 0, p, NULL);
> + r = get_user_pages(userptr, num_pages, write, 0, pages, NULL);
> +
> + spin_lock(>t->guptasklock);
> + list_del(&guptask.list);
> + spin_unlock(>t->guptasklock);
> +
> if (r < 0)
> goto release_pages;
Your merge looks incorrect to me, and I got a build warning for it:
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c: In function 'amdgpu_ttm_tt_get_user_pages':
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:535:17: error: unused variable 'p' [-Werror=unused-variable]
I think the one-line change below is what is needed here, but it's probably
best for amdgpu maintainers to take a closer look.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
index 8b9b245fd0c8..ab34190859a8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -540,7 +540,7 @@ int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages)
list_add(&guptask.list, >t->guptasks);
spin_unlock(>t->guptasklock);
- r = get_user_pages(userptr, num_pages, write, 0, pages, NULL);
+ r = get_user_pages(userptr, num_pages, write, 0, p, NULL);
spin_lock(>t->guptasklock);
list_del(&guptask.list);
next prev parent reply other threads:[~2016-03-17 9:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-17 2:00 linux-next: manual merge of the tip tree with the drm tree Stephen Rothwell
2016-03-17 9:00 ` Arnd Bergmann [this message]
2016-03-17 9:39 ` Stephen Rothwell
2016-03-17 16:52 ` Dave Hansen
-- strict thread matches above, loose matches on Subject: below --
2023-04-11 3:59 Stephen Rothwell
2019-11-27 0:18 Stephen Rothwell
2019-10-10 1:51 Stephen Rothwell
2019-11-27 23:36 ` Stephen Rothwell
2017-02-17 1:56 Stephen Rothwell
2017-02-01 3:38 Stephen Rothwell
2016-11-17 2:59 Stephen Rothwell
2014-03-24 3:38 Stephen Rothwell
2012-03-13 5:11 Stephen Rothwell
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