From mboxrd@z Thu Jan  1 00:00:00 1970
From: Francis Moreau <francis.moro@gmail.com>
Subject: how to get a kernel callgraph starting from a syscall
Date: Thu, 21 Apr 2011 09:46:49 +0200
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Hello,

Sorry if the question is dumb but I'm a bit lost about this.

I know that ftrace exists but I think that perf can do this too: I
have a userspace application which is calling a libc C function (read)
which ends up doing a sys_read.

For the sys_read, I'd like to see what's happening in the kernel by
displaying the call graph.

Can perf do that ?

If so, would it be possible to point me out the perf command to use ?

Thanks
-- 
Francis