linux-kernel - Re: [PATCH v2 05/15] lib min_heap: Add min_heap

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Date: Wed, 20 Mar 2024 10:17:11 -0700
From: Ian Rogers <irogers@...gle.com>
To: Kuan-Wei Chiu <visitorckw@...il.com>
Cc: colyli@...e.de, kent.overstreet@...ux.dev, msakai@...hat.com, 
	peterz@...radead.org, mingo@...hat.com, acme@...nel.org, namhyung@...nel.org, 
	akpm@...ux-foundation.org, bfoster@...hat.com, mark.rutland@....com, 
	alexander.shishkin@...ux.intel.com, jolsa@...nel.org, adrian.hunter@...el.com, 
	jserv@...s.ncku.edu.tw, dm-devel@...ts.linux.dev, 
	linux-bcache@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-bcachefs@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v2 05/15] lib min_heap: Add min_heap_init()

On Wed, Mar 20, 2024 at 10:13 AM Ian Rogers <irogers@...gle.com> wrote:
>
> On Wed, Mar 20, 2024 at 7:54 AM Kuan-Wei Chiu <visitorckw@...il.com> wrote:
> >
> > Add min_heap_init() for initializing heap with data, nr, and size.
> >
> > Signed-off-by: Kuan-Wei Chiu <visitorckw@...il.com>
>
> Thanks, is it possible to update lib/test_min_heap.c to use min_heap_init?

Found in patch 13, thanks!

Reviewed-by: Ian Rogers <irogers@...gle.com>

Ian


> Ian
>
> > ---
> >  include/linux/min_heap.h | 12 ++++++++++++
> >  1 file changed, 12 insertions(+)
> >
> > diff --git a/include/linux/min_heap.h b/include/linux/min_heap.h
> > index c3635a7fdb88..ed462f194b88 100644
> > --- a/include/linux/min_heap.h
> > +++ b/include/linux/min_heap.h
> > @@ -44,6 +44,18 @@ struct min_heap_callbacks {
> >         void (*swp)(void *lhs, void *rhs);
> >  };
> >
> > +/* Initialize a min-heap. */
> > +static __always_inline
> > +void __min_heap_init(struct __min_heap *heap, void *data, int size)
> > +{
> > +       heap->data = data;
> > +       heap->nr = 0;
> > +       heap->size = size;
> > +}
> > +
> > +#define min_heap_init(_heap, _data, _size)     \
> > +       __min_heap_init(&(_heap)->heap, _data, _size)
> > +
> >  /* Sift the element at pos down the heap. */
> >  static __always_inline
> >  void __min_heapify(struct __min_heap *heap, int pos, size_t elem_size,
> > --
> > 2.34.1
> >