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From: | Paolo Bonzini |
Subject: | Re: [Qemu-trivial] [PATCH v4 01/11] tcg: add ability to dump /tmp/perf-<pid>.map files |
Date: | Tue, 4 Aug 2015 12:02:26 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
On 04/08/2015 09:39, Alex Bennée wrote: > At the point of a tb_flush all bets are off as we will re-generate all > the blocks at potentially different locations in the translation buffer. > However for most analysis cases you are unlikely to cause the code > buffer to overflow. Most other uses of tb_flush are the result > debugging. > > I could add a printf when --perfmap is enabled to flag when a flush > happens to signal to the user? I guess some more caveats in the flag > description wouldn't hurt. > > We could consider truncating and re-starting the JIT dump at each flush? Yes, it makes sense to me. printf + truncation would work. Paolo
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