lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 26 Nov 2010 10:36:02 -0300 From: Davidlohr Bueso <dave@....org> To: Peter Zijlstra <a.p.zijlstra@...llo.nl> Cc: Arnaldo Carvalho de Melo <acme@...hat.com>, Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] perf: add GCC optimization to memory allocating functions On Fri, 2010-11-26 at 14:27 +0100, Peter Zijlstra wrote: > On Fri, 2010-11-26 at 10:24 -0300, Davidlohr Bueso wrote: > > From: Davidlohr Bueso <dave@....org> > > > > We can benefit from the alloc_size attribute in xrealloc and zalloc. > > What's this alloc_size attribute do? > Quoting from http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html: "The alloc_size attribute is used to tell the compiler that the function return value points to memory, where the size is given by one or two of the functions parameters. GCC uses this information to improve the correctness of __builtin_object_size." -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists