[PATCH RESEND 0/5] bitmap: cleanup bitmaps printing

Yury Norov ynorov at nvidia.com
Thu Apr 2 11:57:55 AEDT 2026


On Thu, Mar 19, 2026 at 04:18:40PM -0400, Yury Norov wrote:
> Ping?

OK, taking 1-4 in bitmap-for-next.

Thanks,
Yury
 
> On Tue, Mar 03, 2026 at 03:08:36PM -0500, Yury Norov wrote:
> > Bitmap API has a bitmap_print_to_pagebuf() function that is intended to
> > print bitmap into a human readable format, making sure that the output
> > string will not get big enough to cross the current page limit.
> > 
> > Some drivers use this function immediately before passing the result to
> > scnprintf() with no modification. This is useless because scnprintf(),
> > and helpers based on it like seq_pritf() and sysfs_emit(), take care of
> > not overflowing the buffer by itself, and perfectly print bitmaps with
> > "%*pb[l]".
> > 
> > This is a resend of non-networking part of [1]. Patches #3,5 switch from
> > plain scnprintf() to sysfs_emit(), as pointed out by Thomas Weißschuh.
> > 
> > [1] https://lore.kernel.org/all/20260219181407.290201-1-ynorov@nvidia.com/
> > 
> > The networking part, for reference:
> > 
> > https://lore.kernel.org/all/20260303185507.111841-1-ynorov@nvidia.com/
> > 
> > Each patch can be applied individually per corresponding subsystem.
> > 
> > Yury Norov (5):
> >   powerpc/xive: simplify xive_spapr_debug_show()
> >   thermal: intel: switch cpumask_get() to using
> >     cpumask_print_to_pagebuf()
> >   coresight: don't use bitmap_print_to_pagebuf()
> >   lib/prime_numbers: drop temporary buffer in dump_primes()
> >   fpga: m10bmc-sec: switch show_canceled_csk() to using sysfs_emit()
> > 
> >  arch/powerpc/sysdev/xive/spapr.c              | 12 ++-----
> >  drivers/fpga/intel-m10-bmc-sec-update.c       |  3 +-
> >  .../hwtracing/coresight/coresight-cti-sysfs.c | 32 ++++++++-----------
> >  drivers/thermal/intel/intel_powerclamp.c      |  3 +-
> >  lib/math/tests/prime_numbers_kunit.c          |  6 ++--
> >  5 files changed, 21 insertions(+), 35 deletions(-)
> > 
> > -- 
> > 2.43.0


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