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Date: Wed, 16 Dec 2020 16:40:58 +0100 From: Christian König <christian.koenig@....com> To: Martin Peres <martin.peres@...uf.org>, Arnd Bergmann <arnd@...nel.org>, Huang Rui <ray.huang@....com>, David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>, Dave Airlie <airlied@...hat.com>, Madhav Chauhan <madhav.chauhan@....com> Cc: Arnd Bergmann <arnd@...db.de>, Alex Deucher <alexander.deucher@....com>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] drm/ttm: fix unused function warning Am 08.12.20 um 10:43 schrieb Christian König: > Am 08.12.20 um 09:18 schrieb Martin Peres: >> On 04/12/2020 18:51, Arnd Bergmann wrote: >>> From: Arnd Bergmann <arnd@...db.de> >>> >>> ttm_pool_type_count() is not used when debugfs is disabled: >>> >>> drivers/gpu/drm/ttm/ttm_pool.c:243:21: error: unused function >>> 'ttm_pool_type_count' [-Werror,-Wunused-function] >>> static unsigned int ttm_pool_type_count(struct ttm_pool_type *pt) >>> >>> Move the definition into the #ifdef block. >>> >>> Fixes: d099fc8f540a ("drm/ttm: new TT backend allocation pool v3") >>> Signed-off-by: Arnd Bergmann <arnd@...db.de> >> >> Thanks Arnd! The patch looks good to me: >> >> Reviewed-by: Martin Peres <martin.peres@...uf.org> > > Reviewed-by: Christian König <christian.koenig@....com> I've just pushed that to drm-misc-next-fixes. Christian. > >> >>> --- >>> drivers/gpu/drm/ttm/ttm_pool.c | 29 ++++++++++++++--------------- >>> 1 file changed, 14 insertions(+), 15 deletions(-) >>> >>> diff --git a/drivers/gpu/drm/ttm/ttm_pool.c >>> b/drivers/gpu/drm/ttm/ttm_pool.c >>> index 5455b2044759..7b2f60616750 100644 >>> --- a/drivers/gpu/drm/ttm/ttm_pool.c >>> +++ b/drivers/gpu/drm/ttm/ttm_pool.c >>> @@ -239,21 +239,6 @@ static struct page *ttm_pool_type_take(struct >>> ttm_pool_type *pt) >>> return p; >>> } >>> -/* Count the number of pages available in a pool_type */ >>> -static unsigned int ttm_pool_type_count(struct ttm_pool_type *pt) >>> -{ >>> - unsigned int count = 0; >>> - struct page *p; >>> - >>> - spin_lock(&pt->lock); >>> - /* Only used for debugfs, the overhead doesn't matter */ >>> - list_for_each_entry(p, &pt->pages, lru) >>> - ++count; >>> - spin_unlock(&pt->lock); >>> - >>> - return count; >>> -} >>> - >>> /* Initialize and add a pool type to the global shrinker list */ >>> static void ttm_pool_type_init(struct ttm_pool_type *pt, struct >>> ttm_pool *pool, >>> enum ttm_caching caching, unsigned int order) >>> @@ -543,6 +528,20 @@ void ttm_pool_fini(struct ttm_pool *pool) >>> EXPORT_SYMBOL(ttm_pool_fini); >>> #ifdef CONFIG_DEBUG_FS >>> +/* Count the number of pages available in a pool_type */ >>> +static unsigned int ttm_pool_type_count(struct ttm_pool_type *pt) >>> +{ >>> + unsigned int count = 0; >>> + struct page *p; >>> + >>> + spin_lock(&pt->lock); >>> + /* Only used for debugfs, the overhead doesn't matter */ >>> + list_for_each_entry(p, &pt->pages, lru) >>> + ++count; >>> + spin_unlock(&pt->lock); >>> + >>> + return count; >>> +} >>> /* Dump information about the different pool types */ >>> static void ttm_pool_debugfs_orders(struct ttm_pool_type *pt, >>> >
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