From: kangning <kangning18z@ict.ac.cn>
To: haakon.bugge@oracle.com
Cc: linux-rdma@vger.kernel.org, kangning <kangning18z@ict.ac.cn>
Subject: [PATCH v3] Fix one error in mthca_alloc
Date: Fri, 27 Aug 2021 08:52:28 +0800 [thread overview]
Message-ID: <20210827005228.15671-1-kangning18z@ict.ac.cn> (raw)
drivers/infiniband/hw/mthca/mthca_allocator.c: alloc->last left unchanged in mthca_alloc, which
has impact on performance of function find_next_zero_bit in mthca_alloc.
Signed-off-by: kangning <kangning18z@ict.ac.cn>
---
I squashed two commits into one in this version.
drivers/infiniband/hw/mthca/mthca_allocator.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/infiniband/hw/mthca/mthca_allocator.c b/drivers/infiniband/hw/mthca/mthca_allocator.c
index aef1d274a14e..1141695093e7 100644
--- a/drivers/infiniband/hw/mthca/mthca_allocator.c
+++ b/drivers/infiniband/hw/mthca/mthca_allocator.c
@@ -51,6 +51,9 @@ u32 mthca_alloc(struct mthca_alloc *alloc)
}
if (obj < alloc->max) {
+ alloc->last = obj + 1;
+ if (alloc->last == alloc->max)
+ alloc->last = 0;
set_bit(obj, alloc->table);
obj |= alloc->top;
} else
--
2.17.1
next reply other threads:[~2021-08-27 0:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 0:52 kangning [this message]
2021-08-31 9:52 ` [PATCH v3] Fix one error in mthca_alloc Leon Romanovsky
2021-08-31 10:40 ` 康宁
2021-08-31 12:00 ` Leon Romanovsky
2021-08-31 12:16 ` kangning18z
2021-08-31 10:47 ` 康宁
[not found] ` <202109011027459851120@ict.ac.cn>
2021-09-01 7:51 ` Leon Romanovsky
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