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From: Joe Richey <joerichey94@gmail.com>
To: trivial@kernel.org
Cc: Joe Richey <joerichey@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Zhangfei Gao <zhangfei.gao@linaro.org>,
	Zhou Wang <wangzhou1@hisilicon.com>,
	Andy Whitcroft <apw@canonical.com>, Joe Perches <joe@perches.com>,
	Dwaipayan Ray <dwaipayanray1@gmail.com>,
	Lukas Bulwahn <lukas.bulwahn@gmail.com>,
	Sasha Levin <sashal@kernel.org>,
	"Chang S. Bae" <chang.seok.bae@intel.com>,
	Andi Kleen <ak@linux.intel.com>, Peter Xu <peterx@redhat.com>,
	Lei Cao <lei.cao@stratus.com>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	Jean-Philippe Brucker <jean-philippe@linaro.org>,
	Zaibo Xu <xuzaibo@huawei.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Hans Verkuil <hverkuil-cisco@xs4all.nl>,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linux-accelerators@lists.ozlabs.org
Subject: [PATCH v2 7/7] checkpatch: suggest _BITULL() and _BITUL() for UAPI headers
Date: Fri, 21 May 2021 01:58:48 -0700	[thread overview]
Message-ID: <20210521085849.37676-8-joerichey94@gmail.com> (raw)
In-Reply-To: <20210521085849.37676-1-joerichey94@gmail.com>

From: Joe Richey <joerichey@google.com>

Instead of just ignoring UAPI headers, reccomend the UAPI compatible
macros if a user adds something that looks like (1 << n). Normal kernel
code will continue to get BIT_ULL() and BIT() reccomended.

This change also modifies the $realfile regex to match headers that have
"include/uapi" anywhere in their path so paths like:
    tools/include/uapi/linux/kvm.h
    arch/x86/include/uapi/asm/hwcap2.h
get recognized as UAPI headers.

Signed-off-by: Joe Richey <joerichey@google.com>
---
 scripts/checkpatch.pl | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d65334588eb4..47edc61b74c2 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -7020,15 +7020,17 @@ sub process {
 			}
 		}
 
-# check for #defines like: 1 << <digit> that could be BIT(digit), it is not exported to uapi
-		if ($realfile !~ m@^include/uapi/@ &&
-		    $line =~ /#\s*define\s+\w+\s+\(?\s*1\s*([ulUL]*)\s*\<\<\s*(?:\d+|$Ident)\s*\)?/) {
-			my $ull = "";
-			$ull = "_ULL" if (defined($1) && $1 =~ /ll/i);
+# check for #defines like: 1 << <digit> that could be BIT(digit) or similar
+		if ($line =~ /#\s*define\s+\w+\s+\(?\s*1\s*([ulUL]*)\s*\<\<\s*(?:\d+|$Ident)\s*\)?/) {
+			my $ull = (defined($1) && $1 =~ /ll/i);
+			my $macroname = $ull ? "BIT_ULL" : "BIT";
+			if ($realfile =~ m@include/uapi/@) {
+				$macroname = $ull ? "_BITULL" : "_BITUL";
+			}
 			if (CHK("BIT_MACRO",
-				"Prefer using the BIT$ull macro\n" . $herecurr) &&
+				"Prefer using the $macroname macro\n" . $herecurr) &&
 			    $fix) {
-				$fixed[$fixlinenr] =~ s/\(?\s*1\s*[ulUL]*\s*<<\s*(\d+|$Ident)\s*\)?/BIT${ull}($1)/;
+				$fixed[$fixlinenr] =~ s/\(?\s*1\s*[ulUL]*\s*<<\s*(\d+|$Ident)\s*\)?/${macroname}($1)/;
 			}
 		}
 
-- 
2.31.1


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  parent reply	other threads:[~2021-05-21  9:02 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-20 10:43 [PATCH 0/6] Don't use BIT() macro in " Joe Richey
2021-05-20 10:43 ` [PATCH 1/6] x86/elf: " Joe Richey
2021-05-20 10:43 ` [PATCH 2/6] KVM: X86: " Joe Richey
2021-05-20 15:46   ` Sean Christopherson
2021-05-20 10:43 ` [PATCH 3/6] drivers: firmware: psci: " Joe Richey
2021-05-20 10:43 ` [PATCH 4/6] uacce: " Joe Richey
2021-05-20 10:43 ` [PATCH 5/6] media: vicodec: " Joe Richey
2021-05-20 10:43 ` [PATCH 6/6] tools headers UAPI: Sync pkt_sched.h with the kernel sources Joe Richey
2021-05-20 11:07 ` [PATCH 0/6] Don't use BIT() macro in UAPI headers Borislav Petkov
2021-05-20 11:50   ` Joseph Richey
2021-05-20 15:59     ` Borislav Petkov
2021-05-20 15:50   ` Sean Christopherson
2021-05-20 11:11 ` Mark Rutland
2021-05-20 11:40   ` Joseph Richey
2021-05-20 12:09 ` Paolo Bonzini
2021-05-20 15:47 ` Sean Christopherson
2021-05-21  8:58 ` [PATCH v2 0/7] " Joe Richey
2021-05-21  8:58   ` [PATCH v2 1/7] x86/elf: Use _BITUL() " Joe Richey
2021-05-21  8:58   ` [PATCH v2 2/7] KVM: X86: " Joe Richey
2021-05-24 12:28     ` Paolo Bonzini
2021-05-21  8:58   ` [PATCH v2 3/7] drivers: firmware: psci: " Joe Richey
2021-05-21 13:25     ` Mark Rutland
2021-05-21  8:58   ` [PATCH v2 4/7] uacce: " Joe Richey
2021-05-21 13:56     ` Zhangfei Gao
2021-05-21  8:58   ` [PATCH v2 5/7] media: vicodec: " Joe Richey
2021-05-21  8:58   ` [PATCH v2 6/7] tools headers UAPI: Sync pkt_sched.h with the kernel sources Joe Richey
2021-05-21  8:58   ` Joe Richey [this message]
2021-05-21 14:45     ` [PATCH v2 7/7] checkpatch: suggest _BITULL() and _BITUL() for UAPI headers Joe Perches
2021-05-24 11:46 ` [PATCH 0/6] Don't use BIT() macro in " Christoph Hellwig
2021-05-24 12:29   ` Mark Rutland
2021-05-24 16:34     ` David Laight

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