From: Peter Zijlstra <peterz@infradead.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm)
Date: Wed, 16 Oct 2013 22:58:07 +0200 [thread overview]
Message-ID: <20131016205807.GG10651@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20131016204348.GA25121@redhat.com>
On Wed, Oct 16, 2013 at 10:43:48PM +0200, Oleg Nesterov wrote:
> Peter, just in case. I understand that this all is minor. Just I am
> confused. And in any case I do think we do not need __GFP_ZERO when
> it comes to PAGE_SIZE allocation.
Yeah; we could probably avoid it; if only the strcpy functions would
return how many bytes they copied :/ Then we could create a nice little
helper to \0 the tail end for alignment.
Anyway, as long as the resulting code is obvious and makes it hard to
leak something I'm fine.
next prev parent reply other threads:[~2013-10-16 20:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-12 19:22 perf_event_mmap(vma) && !vma->vm_mm Oleg Nesterov
2013-10-14 10:24 ` Peter Zijlstra
2013-10-16 20:09 ` [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm) Oleg Nesterov
2013-10-16 20:09 ` [PATCH 1/2] perf: Kill the dead !vma->vm_mm code in perf_event_mmap_event() Oleg Nesterov
2013-10-29 14:08 ` [tip:perf/core] perf: Kill the dead !vma-> vm_mm " tip-bot for Oleg Nesterov
2013-10-16 20:10 ` [PATCH 2/2] perf: Do not waste PAGE_SIZE bytes for ALIGN(8) " Oleg Nesterov
2013-10-29 14:08 ` [tip:perf/core] " tip-bot for Oleg Nesterov
2013-10-16 20:28 ` [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm) Peter Zijlstra
2013-10-16 20:43 ` Oleg Nesterov
2013-10-16 20:55 ` Peter Zijlstra
2013-10-16 20:55 ` Oleg Nesterov
2013-10-16 20:58 ` Peter Zijlstra [this message]
2013-10-16 20:58 ` Oleg Nesterov
2013-10-16 21:16 ` Peter Zijlstra
2013-10-17 15:20 ` Oleg Nesterov
2013-10-17 15:27 ` Oleg Nesterov
2013-10-17 16:47 ` Peter Zijlstra
2013-10-17 18:24 ` Oleg Nesterov
2013-10-17 21:32 ` Peter Zijlstra
2013-11-06 13:19 ` [tip:perf/core] perf: Factor out strncpy() in perf_event_mmap_event() tip-bot for Oleg Nesterov
2013-10-17 16:38 ` [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm) Peter Zijlstra
2013-10-17 15:22 ` [PATCH 3/2] perf: Optimize the fill/align code in perf_event_mmap_event() Oleg Nesterov
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