From: Will Deacon <will@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Will Deacon <will@kernel.org>, Kees Cook <keescook@chromium.org>,
Ingo Molnar <mingo@kernel.org>,
Elena Reshetova <elena.reshetova@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Hanjun Guo <guohanjun@huawei.com>,
Jan Glauber <jglauber@marvell.com>
Subject: [PATCH 6/6] lib/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions
Date: Fri, 2 Aug 2019 11:10:00 +0100 [thread overview]
Message-ID: <20190802101000.12958-7-will@kernel.org> (raw)
In-Reply-To: <20190802101000.12958-1-will@kernel.org>
The definitions of REFCOUNT_MAX and REFCOUNT_SATURATED are the same,
regardless of CONFIG_REFCOUNT_FULL, so consolidate them into a single
pair of definitions.
Cc: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
---
include/linux/refcount.h | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/include/linux/refcount.h b/include/linux/refcount.h
index eea17f39c4df..814131d492e9 100644
--- a/include/linux/refcount.h
+++ b/include/linux/refcount.h
@@ -22,6 +22,8 @@ typedef struct refcount_struct {
} refcount_t;
#define REFCOUNT_INIT(n) { .refs = ATOMIC_INIT(n), }
+#define REFCOUNT_MAX INT_MAX
+#define REFCOUNT_SATURATED (INT_MIN / 2)
/**
* refcount_set - set a refcount's value
@@ -47,9 +49,6 @@ static inline unsigned int refcount_read(const refcount_t *r)
#ifdef CONFIG_REFCOUNT_FULL
#include <linux/bug.h>
-#define REFCOUNT_MAX INT_MAX
-#define REFCOUNT_SATURATED (INT_MIN / 2)
-
/*
* Variant of atomic_t specialized for reference counts.
*
@@ -261,10 +260,6 @@ static inline void refcount_dec(refcount_t *r)
}
}
#else /* CONFIG_REFCOUNT_FULL */
-
-#define REFCOUNT_MAX INT_MAX
-#define REFCOUNT_SATURATED (INT_MIN / 2)
-
# ifdef CONFIG_ARCH_HAS_REFCOUNT
# include <asm/refcount.h>
# else
--
2.11.0
next prev parent reply other threads:[~2019-08-02 10:10 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 10:09 [PATCH 0/6] Rework REFCOUNT_FULL using atomic_fetch_* operations Will Deacon
2019-08-02 10:09 ` [PATCH 1/6] lib/refcount: Define constants for saturation and max refcount values Will Deacon
2019-08-02 10:09 ` [PATCH 2/6] lib/refcount: Ensure integer operands are treated as signed Will Deacon
2019-08-02 10:09 ` [PATCH 3/6] lib/refcount: Remove unused refcount_*_checked() variants Will Deacon
2019-08-02 10:09 ` [PATCH 4/6] lib/refcount: Move bulk of REFCOUNT_FULL implementation into header Will Deacon
2019-08-02 18:52 ` Peter Zijlstra
2019-08-03 2:23 ` Kees Cook
2019-08-09 16:04 ` Will Deacon
2019-08-12 18:08 ` Kees Cook
2019-08-02 10:09 ` [PATCH 5/6] lib/refcount: Improve performance of generic REFCOUNT_FULL code Will Deacon
2019-08-02 18:55 ` Peter Zijlstra
2019-08-09 15:38 ` Will Deacon
2019-08-02 10:10 ` Will Deacon [this message]
2019-08-02 18:49 ` [PATCH 0/6] Rework REFCOUNT_FULL using atomic_fetch_* operations Peter Zijlstra
2019-08-09 15:34 ` Will Deacon
Reply instructions:
You may reply publicly 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=20190802101000.12958-7-will@kernel.org \
--to=will@kernel.org \
--cc=ard.biesheuvel@linaro.org \
--cc=elena.reshetova@intel.com \
--cc=guohanjun@huawei.com \
--cc=jglauber@marvell.com \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).