Stable Archive on lore.kernel.org
 help / color / Atom feed
From: Mark Rutland <mark.rutland@arm.com>
To: linux-kernel@vger.kernel.org, peterz@infradead.org, will.deacon@arm.com
Cc: aou@eecs.berkeley.edu, arnd@arndb.de, bp@alien8.de,
	catalin.marinas@arm.com, davem@davemloft.net,
	fenghua.yu@intel.com, heiko.carstens@de.ibm.com,
	herbert@gondor.apana.org.au, ink@jurassic.park.msu.ru,
	jhogan@kernel.org, linux@armlinux.org.uk, mark.rutland@arm.com,
	mattst88@gmail.com, mingo@kernel.org, mpe@ellerman.id.au,
	palmer@sifive.com, paul.burton@mips.com, paulus@samba.org,
	ralf@linux-mips.org, rth@twiddle.net, stable@vger.kernel.org,
	tglx@linutronix.de, tony.luck@intel.com, vgupta@synopsys.com
Subject: [PATCH 01/18] locking/atomic: crypto: nx: prepare for atomic64_read() conversion
Date: Wed, 22 May 2019 14:22:33 +0100
Message-ID: <20190522132250.26499-2-mark.rutland@arm.com> (raw)
In-Reply-To: <20190522132250.26499-1-mark.rutland@arm.com>

The return type of atomic64_read() varies by architecture. It may return
long (e.g. powerpc), long long (e.g. arm), or s64 (e.g. x86_64). This is
somewhat painful, and mandates the use of explicit casts in some cases
(e.g. when printing the return value).

To ameliorate matters, subsequent patches will make the atomic64 API
consistently use s64.

As a preparatory step, this patch updates the nx-842 code to treat the
return value of atomic64_read() as s64, using explicit casts. These
casts will be removed once the s64 conversion is complete.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
---
 drivers/crypto/nx/nx-842-pseries.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/nx/nx-842-pseries.c b/drivers/crypto/nx/nx-842-pseries.c
index 57932848361b..9432e9e42afe 100644
--- a/drivers/crypto/nx/nx-842-pseries.c
+++ b/drivers/crypto/nx/nx-842-pseries.c
@@ -869,8 +869,8 @@ static ssize_t nx842_##_name##_show(struct device *dev,		\
 	rcu_read_lock();						\
 	local_devdata = rcu_dereference(devdata);			\
 	if (local_devdata)						\
-		p = snprintf(buf, PAGE_SIZE, "%ld\n",			\
-		       atomic64_read(&local_devdata->counters->_name));	\
+		p = snprintf(buf, PAGE_SIZE, "%lld\n",			\
+		       (s64)atomic64_read(&local_devdata->counters->_name));	\
 	rcu_read_unlock();						\
 	return p;							\
 }
@@ -922,17 +922,17 @@ static ssize_t nx842_timehist_show(struct device *dev,
 	}
 
 	for (i = 0; i < (NX842_HIST_SLOTS - 2); i++) {
-		bytes = snprintf(p, bytes_remain, "%u-%uus:\t%ld\n",
+		bytes = snprintf(p, bytes_remain, "%u-%uus:\t%lld\n",
 			       i ? (2<<(i-1)) : 0, (2<<i)-1,
-			       atomic64_read(&times[i]));
+			       (s64)atomic64_read(&times[i]));
 		bytes_remain -= bytes;
 		p += bytes;
 	}
 	/* The last bucket holds everything over
 	 * 2<<(NX842_HIST_SLOTS - 2) us */
-	bytes = snprintf(p, bytes_remain, "%uus - :\t%ld\n",
+	bytes = snprintf(p, bytes_remain, "%uus - :\t%lld\n",
 			2<<(NX842_HIST_SLOTS - 2),
-			atomic64_read(&times[(NX842_HIST_SLOTS - 1)]));
+			(s64)atomic64_read(&times[(NX842_HIST_SLOTS - 1)]));
 	p += bytes;
 
 	rcu_read_unlock();
-- 
2.11.0


  reply index

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 13:22 [PATCH 00/18] locking/atomic: atomic64 type cleanup Mark Rutland
2019-05-22 13:22 ` Mark Rutland [this message]
2019-05-22 13:22 ` [PATCH 02/18] locking/atomic: s390/pci: prepare for atomic64_read() conversion Mark Rutland
2019-05-22 13:22 ` [PATCH 03/18] locking/atomic: generic: use s64 for atomic64 Mark Rutland
2019-05-22 21:16   ` Arnd Bergmann
2019-05-22 13:22 ` [PATCH 04/18] locking/atomic: alpha: " Mark Rutland
2019-05-22 13:22 ` [PATCH 05/18] locking/atomic: arc: " Mark Rutland
2019-05-23 23:10   ` Vineet Gupta
2019-05-22 13:22 ` [PATCH 06/18] locking/atomic: arm: " Mark Rutland
2019-05-22 13:22 ` [PATCH 07/18] locking/atomic: arm64: " Mark Rutland
2019-05-22 13:22 ` [PATCH 08/18] locking/atomic: ia64: " Mark Rutland
2019-05-22 13:22 ` [PATCH 09/18] locking/atomic: mips: " Mark Rutland
2019-05-22 13:22 ` [PATCH 10/18] locking/atomic: powerpc: " Mark Rutland
2019-05-23 13:27   ` Michael Ellerman
2019-05-22 13:22 ` [PATCH 11/18] locking/atomic: riscv: fix atomic64_sub_if_positive() offset argument Mark Rutland
2019-05-22 19:06   ` Palmer Dabbelt
2019-05-22 13:22 ` [PATCH 12/18] locking/atomic: riscv: use s64 for atomic64 Mark Rutland
2019-05-22 19:06   ` Palmer Dabbelt
2019-05-23 10:23     ` Mark Rutland
2019-05-22 13:22 ` [PATCH 13/18] locking/atomic: s390: " Mark Rutland
2019-05-22 13:22 ` [PATCH 14/18] locking/atomic: sparc: " Mark Rutland
2019-05-22 13:22 ` [PATCH 15/18] locking/atomic: x86: " Mark Rutland
2019-05-22 13:22 ` [PATCH 16/18] locking/atomic: use s64 for atomic64_t on 64-bit Mark Rutland
2019-05-22 13:22 ` [PATCH 17/18] locking/atomic: crypto: nx: remove redundant casts Mark Rutland
2019-05-22 13:22 ` [PATCH 18/18] locking/atomic: s390/pci: " Mark Rutland
2019-05-22 21:18 ` [PATCH 00/18] locking/atomic: atomic64 type cleanup Arnd Bergmann
2019-05-23 10:28   ` Mark Rutland
2019-05-23  8:30 ` Andrea Parri
2019-05-23 10:19   ` Mark Rutland
2019-05-23 11:20     ` Andrea Parri
2019-05-24 10:37     ` Peter Zijlstra
2019-05-24 11:18       ` Peter Zijlstra
2019-05-24 11:38         ` Greg KH
2019-05-24 11:42         ` Will Deacon
2019-05-24 11:52           ` Peter Zijlstra
2019-05-24 22:43             ` Andrea Parri
2019-05-28 10:47               ` Peter Zijlstra
2019-05-28 11:15                 ` Andrea Parri

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190522132250.26499-2-mark.rutland@arm.com \
    --to=mark.rutland@arm.com \
    --cc=aou@eecs.berkeley.edu \
    --cc=arnd@arndb.de \
    --cc=bp@alien8.de \
    --cc=catalin.marinas@arm.com \
    --cc=davem@davemloft.net \
    --cc=fenghua.yu@intel.com \
    --cc=heiko.carstens@de.ibm.com \
    --cc=herbert@gondor.apana.org.au \
    --cc=ink@jurassic.park.msu.ru \
    --cc=jhogan@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=mattst88@gmail.com \
    --cc=mingo@kernel.org \
    --cc=mpe@ellerman.id.au \
    --cc=palmer@sifive.com \
    --cc=paul.burton@mips.com \
    --cc=paulus@samba.org \
    --cc=peterz@infradead.org \
    --cc=ralf@linux-mips.org \
    --cc=rth@twiddle.net \
    --cc=stable@vger.kernel.org \
    --cc=tglx@linutronix.de \
    --cc=tony.luck@intel.com \
    --cc=vgupta@synopsys.com \
    --cc=will.deacon@arm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Stable Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ https://lore.kernel.org/stable \
		stable@vger.kernel.org stable@archiver.kernel.org
	public-inbox-index stable


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.stable


AGPL code for this site: git clone https://public-inbox.org/ public-inbox