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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190829171013.22956-1-efremov@linux.com> Content-Language: en-GB X-Provags-ID: V03:K1:DI3FpTUC8uJKXTMgrKvcNpG+f2zb74VA2THgSRGNXEWfvqqjlpV 3MP6lIEhbsI0D+uSpOA9yq3bRWLbdpsf7j0V+g7g7FD2IpYpHipDeVp4LflL6Q35nwydVVp 9jFWeXRTWCVQFzfQbb7+3nrAOo40BW/eYFHfXh06acL7QnVpt4m7iTGhOwdQyEB9g0ogZew rbbO7ksMLFfPWIGR9UINA== X-UI-Out-Filterresults: notjunk:1;V03:K0:cl/38dEW/ng=:CONj7+j6AjsRnOcfIyG0DU tLQVIlnKm0uPp2KMO5pkkXhszmdn6r1sH+0gAstjJzckszhlqEcyFdri/XF1A7IjxsURXamj/ xmmE0Q4bbkA3LVj9Yj0CVoq7SuPZPtMA44ZSb+MyIzCEZ8BykMPV4LoMfgZ4X+Ev7VBSzDVKh gSFZ80OPmWW+Db7lZwhw8kLA06BcaOUSQer1dtdspdX9poWWItKJTfP0IJQdtFw6FYC1yfK5l nImEhXNWD+BibarsTkmAM//fQjeoiTu2TrHOVNo7bArWSuoVVriMeVfmocVVFuBVVW8JI19xa cfd8WnCXUd1JbnZeZWWTzLRGYSjRTAh4yRhzDyd8vvD4H893kuGlmrxRPCdScH2Ek6HWFpbbZ o2jNKgyc3qlVYiTRAooDy+PZiomw+XPx3GSNXywkfzOhjISfF/mRCdzLaH42pHA1xHO42oYMl UZpSVKIJKXVLnbp7ghSZy6xM2dR19ROo80CNjSxYN/ELjv4PvNd/q6Vfrosf5AHTp2S3EhXh0 ybe7NsWCZXwQ2hhkA8x+8/Gs6zeSM2H8Dws9p5gf3IJF4mmtVo+zVuOQH+Ex6zA7Ipk2KctW9 bMCWB91LdJDbFZNTi40EADSLsLCCXyRaXPz3zJbqEWH1lVPOi3kRzDccos/jCmLD0Rns2TpV3 eoAaif9bp7D34V4qdPv3rmH6gw4pS2q2lMOASvDsmMd5G/BpeksQfibgi4kVsDglaFV7s8ns7 1xrHzegFBaQgNIcnFIS3OvMc7VY/0FCQjw55zPQg3cFVzX/96fn6LQTIGgjBUFusAsoIIh8Lf in0CG29doHtIWCIngyPllt+1vxsGBrLUF/6jWhdDdkbzKnw4rG1V3VIOVYiQ3nIGonxZWTBNI T3R/XwCf6bTVVJez/eClRMTrmFNuuEyC9HGqKYnpg//Msv+OkQbMkZpnevQzfTJ9UekXvsVaj +XhiMTUUd3q+g8WEQKG63U4Q2+W9PQKDMwwTwnFsaJl4J1alTwzW9Ml5G1HCSlc/yXyQ01dwv jAMTuyHxhRUMHQ39tO2uS5dTiaCe8PeZLOzkrRmrQa7SJ5yRjG1IX98LCy5LM92qLnbd4+b1J PzNB4gak8em/ky6lAd57IZRZuqLNq4Ct3xVOAGSa7UiYHFUWCQdDSQVPGY7Oxb+9KYLkLQtyP srQpXZ0yycVhQmasY2To7pblCCk3SL/7UlgPxW85eY2mZTrA== X-Greylist: Sender IP whitelisted, Sender e-mail whitelisted, not delayed by milter-greylist-4.4.3 (isis.lip6.fr [132.227.60.2]); Fri, 30 Aug 2019 09:56:08 +0200 (CEST) X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.4.3 (isis.lip6.fr [132.227.60.2]); Fri, 30 Aug 2019 09:56:04 +0200 (CEST) X-Scanned-By: MIMEDefang 2.78 on 132.227.60.2 X-Scanned-By: MIMEDefang 2.78 on 132.227.60.2 Cc: linux-kernel@vger.kernel.org Subject: Re: [Cocci] [PATCH v2] scripts: coccinelle: check for !(un)?likely usage X-BeenThere: cocci@systeme.lip6.fr X-Mailman-Version: 2.1.13 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: cocci-bounces@systeme.lip6.fr Errors-To: cocci-bounces@systeme.lip6.fr > +/// Notations !unlikely(x) and !likely(x) are confusing. I am curious if more software developers will share their views around these likeliness annotations. * How much does the scope matter for expressions? * Are different coding style preferences involved? > +//---------------------------------------------------------- > +// For context mode > +//---------------------------------------------------------- > + > +@depends on context disable unlikely@ I wonder about the need for such a comment when the specification of SmPL rule dependencies should be sufficient. > +@depends on patch disable unlikely@ > +expression E; > +@@ > + > +( > +-!likely(!E) > ++unlikely(E) > +| > +-!likely(E) > ++unlikely(!E) > +| > +-!unlikely(!E) > ++likely(E) > +| > +-!unlikely(E) > ++likely(!E) > +) Will another variant for the change specification with the semantic patch language influence corresponding readability concerns? +@replacement depends on patch disable unlikely@ +expression x; +@@ +-! +( +( +-unlikely ++likely +| +-likely ++unlikely +) + ( +- ! + x + ) +| +( +-unlikely ++likely +| +-likely ++unlikely +) + ( ++ ! + x + ) +) Can the use of nested SmPL disjunctions help here together with an other SmPL code formatting? Regards, Markus _______________________________________________ Cocci mailing list Cocci@systeme.lip6.fr https://systeme.lip6.fr/mailman/listinfo/cocci