Re: [PATCH v6 2/2] Output stall data in debugfs

From: Peter Zijlstra
Date: Thu Aug 11 2011 - 15:58:13 EST

On Thu, 2011-08-11 at 12:51 -0700, Alex Neronskiy wrote:
> I didn't want to hold on to a lock while the lines were iterated over,
> and instead just dump it in one go. I guess it's not a big deal to do
> that, though. Nonetheless, is one page not enough?

The "[<%pK>] %pS\n" that's 6bytes + 8bytes + ~64bytes making 78 bytes at
worst (assuming we have a symbol length max of 64 that is), that yields
4096/78 = 52, so yeah, just about enough since your trace depth is
limited at 50. But its close enough to make me feel uncomfortable.

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