On Wed, Feb 25, 2026 at 01:02:35PM +0100, Przemek Kitszel wrote: > On 2/25/26 01:00, Yury Norov wrote: > > Use better bitmap API where appropriate. > > > > Original series: > > > > https://lore.kernel.org/all/[email protected]/ > > > > RESEND: rebase on top of v7.0-rc1 > > > > Yury Norov (3): > > bitmap: introduce bitmap_weighted_xor() > > ice: use bitmap_weighted_xor() in ice_find_free_recp_res_idx() > > Thank you for working on better API. > Do you want this to go through intel, then netdev, tree? > Likely that would slow any future user, if you have already one in mind. > > > ice: use bitmap_empty() in ice_vf_has_no_qs_ena > > For unrelated reasons I have one series that will possibly conflict > with your patch. Would prefer to not wait/block each other, so will > be best if we (Tony) just take this one (in case you will proceed > with the first two patches via your tree)
Another trivial user (recently added) for bitmap_weighted_xx() is xe_pagefault_queue_init() in drivers/gpu/drm/xe/xe_pagefault.c, but it's again the Intel's driver, so it will go with your tree anyways. I'm not aware of others, so I believe Tony's tree is the best route. > > drivers/net/ethernet/intel/ice/ice_switch.c | 4 +--- > > drivers/net/ethernet/intel/ice/ice_vf_lib.c | 4 ++-- > > include/linux/bitmap.h | 14 ++++++++++++++ > > lib/bitmap.c | 7 +++++++ > > 4 files changed, 24 insertions(+), 5 deletions(-) + Matthew Brost Attaching a patch for xe_pagefault_queue_init(). Feel free to append it to this series, or let me know if it's better to send it separately. Thanks, Yury >From 21804f4ae1674aa166e3566fa898996806ebd3e3 Mon Sep 17 00:00:00 2001 From: Yury Norov <[email protected]> Date: Wed, 25 Feb 2026 10:02:22 -0500 Subject: [PATCH] drm/xe: switch xe_pagefault_queue_init() to using bitmap_weighted_or() The function calls bitmap_or() immediately followed by bitmap_weight(). Switch to using the dedicated bitmap_weighted_or() and save one bitmap traverse. Signed-off-by: Yury Norov <[email protected]> --- drivers/gpu/drm/xe/xe_pagefault.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_pagefault.c b/drivers/gpu/drm/xe/xe_pagefault.c index 6bee53d6ffc3..c4ce3cfe2164 100644 --- a/drivers/gpu/drm/xe/xe_pagefault.c +++ b/drivers/gpu/drm/xe/xe_pagefault.c @@ -285,10 +285,9 @@ static int xe_pagefault_queue_init(struct xe_device *xe, xe_dss_mask_t all_dss; int num_dss, num_eus; - bitmap_or(all_dss, gt->fuse_topo.g_dss_mask, + num_dss = bitmap_weighted_or(all_dss, gt->fuse_topo.g_dss_mask, gt->fuse_topo.c_dss_mask, XE_MAX_DSS_FUSE_BITS); - num_dss = bitmap_weight(all_dss, XE_MAX_DSS_FUSE_BITS); num_eus = bitmap_weight(gt->fuse_topo.eu_mask_per_dss, XE_MAX_EU_FUSE_BITS) * num_dss; -- 2.43.0
