From: Dennis Zhou <dennisz@fb.com>
To: Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>,
Josef Bacik <josef@toxicpanda.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
kernel-team@fb.com, Dennis Zhou <dennisszhou@gmail.com>
Subject: [PATCH v2 03/23] percpu: remove has_reserved from pcpu_chunk
Date: Mon, 24 Jul 2017 19:02:00 -0400 [thread overview]
Message-ID: <20170724230220.21774-4-dennisz@fb.com> (raw)
In-Reply-To: <20170724230220.21774-1-dennisz@fb.com>
From: "Dennis Zhou (Facebook)" <dennisszhou@gmail.com>
Prior this variable was used to manage statistics when the first chunk
had a reserved region. The previous patch introduced start_offset to
keep track of the offset by value rather than boolean. Therefore,
has_reserved can be removed.
Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
---
mm/percpu-internal.h | 5 -----
mm/percpu-stats.c | 2 +-
mm/percpu.c | 3 ---
3 files changed, 1 insertion(+), 9 deletions(-)
diff --git a/mm/percpu-internal.h b/mm/percpu-internal.h
index 92fc012..c876b5b 100644
--- a/mm/percpu-internal.h
+++ b/mm/percpu-internal.h
@@ -23,11 +23,6 @@ struct pcpu_chunk {
void *data; /* chunk data */
int first_free; /* no free below this */
bool immutable; /* no [de]population allowed */
- bool has_reserved; /* Indicates if chunk has reserved space
- at the beginning. Reserved chunk will
- contain reservation for static chunk.
- Dynamic chunk will contain reservation
- for static and reserved chunks. */
int start_offset; /* the overlap with the previous
region to have a page aligned
base_addr */
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index 44e561d..32f3550 100644
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -58,7 +58,7 @@ static void chunk_map_stats(struct seq_file *m, struct pcpu_chunk *chunk,
int cur_min_alloc = 0, cur_med_alloc = 0, cur_max_alloc = 0;
alloc_sizes = buffer;
- s_index = chunk->has_reserved ? 1 : 0;
+ s_index = (chunk->start_offset) ? 1 : 0;
/* find last allocation */
last_alloc = -1;
diff --git a/mm/percpu.c b/mm/percpu.c
index e94f0d1..470e1a0 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -727,7 +727,6 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void)
chunk->map[0] = 0;
chunk->map[1] = pcpu_unit_size | 1;
chunk->map_used = 1;
- chunk->has_reserved = false;
INIT_LIST_HEAD(&chunk->list);
INIT_LIST_HEAD(&chunk->map_extend_list);
@@ -1704,7 +1703,6 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
schunk->map[1] = schunk->start_offset;
schunk->map[2] = (ai->static_size + schunk->free_size) | 1;
schunk->map_used = 2;
- schunk->has_reserved = true;
/* init dynamic chunk if necessary */
if (dyn_size) {
@@ -1724,7 +1722,6 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
dchunk->map[1] = dchunk->start_offset;
dchunk->map[2] = (dchunk->start_offset + dchunk->free_size) | 1;
dchunk->map_used = 2;
- dchunk->has_reserved = true;
}
/* link the first chunk in */
--
2.9.3
--
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next prev parent reply other threads:[~2017-07-24 23:02 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-24 23:01 [PATCH v2 00/23] percpu: replace percpu area map allocator with bitmap allocator Dennis Zhou
2017-07-24 23:01 ` [PATCH v2 01/23] percpu: setup_first_chunk enforce dynamic region must exist Dennis Zhou
2017-07-25 18:03 ` Josef Bacik
2017-07-24 23:01 ` [PATCH v2 02/23] percpu: introduce start_offset to pcpu_chunk Dennis Zhou
2017-07-25 18:04 ` Josef Bacik
2017-07-24 23:02 ` Dennis Zhou [this message]
2017-07-25 18:05 ` [PATCH v2 03/23] percpu: remove has_reserved from pcpu_chunk Josef Bacik
2017-07-24 23:02 ` [PATCH v2 04/23] percpu: setup_first_chunk remove dyn_size and consolidate logic Dennis Zhou
2017-07-25 18:07 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 05/23] percpu: unify allocation of schunk and dchunk Dennis Zhou
2017-07-25 18:10 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 06/23] percpu: end chunk area maps page aligned for the populated bitmap Dennis Zhou
2017-07-25 18:14 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 07/23] percpu: setup_first_chunk rename schunk/dchunk to chunk Dennis Zhou
2017-07-25 18:15 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 08/23] percpu: modify base_addr to be region specific Dennis Zhou
2017-07-25 18:24 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 09/23] percpu: combine percpu address checks Dennis Zhou
2017-07-25 18:25 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 10/23] percpu: change the number of pages marked in the first_chunk pop bitmap Dennis Zhou
2017-07-25 18:27 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 11/23] percpu: introduce nr_empty_pop_pages to help empty page accounting Dennis Zhou
2017-07-25 18:29 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 12/23] percpu: increase minimum percpu allocation size and align first regions Dennis Zhou
2017-07-25 18:33 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 13/23] percpu: generalize bitmap (un)populated iterators Dennis Zhou
2017-07-25 18:35 ` Josef Bacik
2017-07-26 14:08 ` Tejun Heo
2017-07-24 23:02 ` [PATCH v2 14/23] percpu: replace area map allocator with bitmap allocator Dennis Zhou
2017-07-25 17:36 ` [percpu] ec1f2e572e: WARNING:at_lib/list_debug.c:#__list_add_valid kernel test robot
2017-07-25 19:15 ` [PATCH v2 14/23] percpu: replace area map allocator with bitmap allocator Josef Bacik
2017-07-25 20:24 ` [PATCH updated 14/23] percpu: replace area map allocator with bitmap Dennis Zhou
2017-07-24 23:02 ` [PATCH v2 15/23] percpu: introduce bitmap metadata blocks Dennis Zhou
2017-07-25 19:20 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 16/23] percpu: add first_bit to keep track of the first free in the bitmap Dennis Zhou
2017-07-25 19:21 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 17/23] percpu: skip chunks if the alloc does not fit in the contig hint Dennis Zhou
2017-07-25 19:25 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 18/23] percpu: keep track of the best offset for contig hints Dennis Zhou
2017-07-25 19:29 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 19/23] percpu: update alloc path to only scan if contig hints are broken Dennis Zhou
2017-07-25 19:32 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 20/23] percpu: update free path to take advantage of contig hints Dennis Zhou
2017-07-25 19:38 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 21/23] percpu: use metadata blocks to update the chunk contig hint Dennis Zhou
2017-07-25 19:40 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 22/23] percpu: update pcpu_find_block_fit to use an iterator Dennis Zhou
2017-07-25 19:47 ` Josef Bacik
2017-07-24 23:02 ` [PATCH v2 23/23] percpu: update header to contain bitmap allocator explanation Dennis Zhou
2017-07-25 19:49 ` Josef Bacik
2017-07-26 21:42 ` Tejun Heo
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