From: Yury Norov <yury.norov@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Amritha Nambiar <amritha.nambiar@intel.com>,
Willem de Bruijn <willemb@google.com>,
Kees Cook <keescook@chromium.org>,
Matthew Wilcox <willy@infradead.org>,
"Tobin C . Harding" <tobin@kernel.org>,
Will Deacon <will.deacon@arm.com>,
Miklos Szeredi <mszeredi@redhat.com>,
Vineet Gupta <vineet.gupta1@synopsys.com>,
Chris Wilson <chris@chris-wilson.co.uk>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
linux-kernel@vger.kernel.org
Cc: Yury Norov <ynorov@marvell.com>,
Yury Norov <yury.norov@gmail.com>, Jens Axboe <axboe@kernel.dk>,
Steffen Klassert <steffen.klassert@secunet.com>
Subject: [PATCH 7/7] cpumask: don't calculate length of the input string
Date: Tue, 30 Apr 2019 18:06:36 -0700 [thread overview]
Message-ID: <20190501010636.30595-8-ynorov@marvell.com> (raw)
In-Reply-To: <20190501010636.30595-1-ynorov@marvell.com>
New design of inner bitmap_parse() allows to avoid
calculating the size of a null-terminated string.
Signed-off-by: Yury Norov <ynorov@marvell.com>
---
include/linux/cpumask.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 21755471b1c3..d55d015edc58 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -633,9 +633,7 @@ static inline int cpumask_parselist_user(const char __user *buf, int len,
*/
static inline int cpumask_parse(const char *buf, struct cpumask *dstp)
{
- unsigned int len = strchrnul(buf, '\n') - buf;
-
- return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpumask_bits);
+ return bitmap_parse(buf, UINT_MAX, cpumask_bits(dstp), nr_cpumask_bits);
}
/**
--
2.17.1
next prev parent reply other threads:[~2019-05-01 1:07 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-01 1:06 [PATCH 0/7] lib: rework bitmap_parse Yury Norov
2019-05-01 1:06 ` [PATCH 1/7] lib/string: add strnchrnul() Yury Norov
2019-05-08 8:47 ` Andy Shevchenko
2019-05-01 1:06 ` [PATCH 2/7] bitops: more BITS_TO_* macros Yury Norov
2019-05-08 8:47 ` Andy Shevchenko
2019-05-01 1:06 ` [PATCH 3/7] lib: add test for bitmap_parse() Yury Norov
2019-05-08 8:47 ` Andy Shevchenko
2019-05-01 1:06 ` [PATCH 4/7] lib: make bitmap_parse_user a wrapper on bitmap_parse Yury Norov
2019-05-08 8:47 ` Andy Shevchenko
2019-05-01 1:06 ` [PATCH 5/7] lib: rework bitmap_parse() Yury Norov
2019-05-08 8:46 ` Andy Shevchenko
2019-05-10 2:26 ` Yury Norov
2019-05-24 2:51 ` Andrew Morton
2019-05-01 1:06 ` [PATCH 6/7] lib: new testcases for bitmap_parse{_user} Yury Norov
2019-05-08 8:47 ` Andy Shevchenko
2019-05-01 1:06 ` Yury Norov [this message]
2019-05-08 8:48 ` [PATCH 7/7] cpumask: don't calculate length of the input string Andy Shevchenko
2019-05-07 21:04 ` [PATCH 0/7] lib: rework bitmap_parse Yury Norov
2019-07-21 21:27 [PATCH v3 " Yury Norov
2019-07-21 21:27 ` [PATCH 7/7] cpumask: don't calculate length of the input string Yury Norov
2019-09-09 3:30 [PATCH v4 0/7] lib: rework bitmap_parse Yury Norov
2019-09-09 3:30 ` [PATCH 7/7] cpumask: don't calculate length of the input string Yury Norov
2020-01-02 4:30 [PATCH v5 0/7] lib: rework bitmap_parse Yury Norov
2020-01-02 4:30 ` [PATCH 7/7] cpumask: don't calculate length of the input string Yury Norov
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