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
| ||
|
Message-ID: <53C0C8A8.6020102@intel.com> Date: Sat, 12 Jul 2014 08:33:28 +0300 From: Adrian Hunter <adrian.hunter@...el.com> To: Peter Zijlstra <peterz@...radead.org> CC: acme@...nel.org, Jiri Olsa <jolsa@...hat.com>, Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org, Frederic Weisbecker <fweisbec@...il.com>, David Ahern <dsahern@...il.com>, "Shishkin, Alexander" <alexander.shishkin@...el.com>, Paul Mackerras <paulus@...ba.org>, Namhyung Kim <namhyung@...nel.org>, Stephane Eranian <eranian@...gle.com> Subject: Re: perf tools: Call graph from Intel BTS On 11/07/2014 6:36 p.m., Peter Zijlstra wrote: > On Fri, Jul 11, 2014 at 05:36:41PM +0300, Adrian Hunter wrote: >> Alexander Shishkin is working on the Intel PT driver for perf >> and has included a driver for Intel BTS. I have taken that and > > There is already a BTS driver, although I've not used it ever, since > there's no useful tool for it. One way would be to use that, and migrate > to PT data later. Currently that driver does not allow kernel tracing. Last time I tried it with that restriction removed, it would lose data on larger workloads. Generally, any loss of data ruins the call graph. For me it does not make sense to try to support it, since I am primarily trying to pave the way for the Intel PT driver. -- 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