From: Frederic Weisbecker <fweisbec@gmail.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: acme@redhat.com, a.p.zijlstra@chello.nl, mingo@elte.hu,
paulus@samba.org, cjashfor@linux.vnet.ibm.com,
eranian@google.com, gorcunov@openvz.org, tzanussi@gmail.com,
mhiramat@redhat.com, robert.richter@amd.com, fche@redhat.com,
linux-kernel@vger.kernel.org, masami.hiramatsu.pt@hitachi.com,
drepper@gmail.com, asharma@fb.com,
benjamin.redelings@nescent.org
Subject: Re: [PATCH 06/23] perf: Add perf_output_skip function to skip bytes in sample
Date: Wed, 27 Jun 2012 17:32:42 +0200 [thread overview]
Message-ID: <20120627153229.GK20638@somewhere.redhat.com> (raw)
In-Reply-To: <1340120894-9465-7-git-send-email-jolsa@redhat.com>
On Tue, Jun 19, 2012 at 05:47:57PM +0200, Jiri Olsa wrote:
> Introducing perf_output_skip function to be able to skip
> data within the perf ring buffer.
>
> When writing data into perf ring buffer we first reserve needed
> place in ring buffer and then copy the actual data.
>
> There's a possibility we won't be able to fill all the reserved
> size with data, so we need a way to skip the remaining bytes.
>
> This is going to be usefull when storing the user stack dump,
> where we might end up with less data than we originally requested.
>
> Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
next prev parent reply other threads:[~2012-06-27 15:32 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-19 15:47 [RFCv5 00/23] perf: Add backtrace post dwarf unwind Jiri Olsa
2012-06-19 15:47 ` [PATCH 01/23] tracing/filter: Add missing initialization Jiri Olsa
2012-08-21 15:17 ` [tip:perf/core] " tip-bot for Jiri Olsa
2012-06-19 15:47 ` [PATCH 02/23] perf: Unified API to record selective sets of arch registers Jiri Olsa
2012-06-20 16:42 ` Frederic Weisbecker
2012-06-20 17:39 ` Jiri Olsa
2012-06-27 14:58 ` Frederic Weisbecker
2012-06-29 7:36 ` Jiri Olsa
2012-06-19 15:47 ` [PATCH 03/23] perf: Add ability to attach user level registers dump to sample Jiri Olsa
2012-06-27 15:11 ` Frederic Weisbecker
2012-06-27 15:13 ` Stephane Eranian
2012-06-27 15:24 ` Frederic Weisbecker
2012-06-27 15:25 ` Peter Zijlstra
2012-06-27 15:30 ` Frederic Weisbecker
2012-06-29 7:50 ` Jiri Olsa
2012-06-29 11:23 ` Frederic Weisbecker
2012-06-29 11:30 ` Jiri Olsa
2012-06-29 11:39 ` Frederic Weisbecker
2012-06-19 15:47 ` [PATCH 04/23] perf, x86: Add copy_from_user_nmi_nochk for best effort copy Jiri Olsa
2012-06-27 15:19 ` Frederic Weisbecker
2012-06-29 7:38 ` Jiri Olsa
2012-06-19 15:47 ` [PATCH 05/23] perf: Factor __output_copy to be usable with specific copy function Jiri Olsa
2012-06-19 15:47 ` [PATCH 06/23] perf: Add perf_output_skip function to skip bytes in sample Jiri Olsa
2012-06-27 15:32 ` Frederic Weisbecker [this message]
2012-06-19 15:47 ` [PATCH 07/23] perf: Add ability to attach user stack dump to sample Jiri Olsa
2012-06-19 15:47 ` [PATCH 08/23] perf: Add attribute to filter out callchains Jiri Olsa
2012-06-19 15:48 ` [RFC 09/23] x86_64: Store userspace rsp in system_call fastpath Jiri Olsa
2012-06-28 12:08 ` Frederic Weisbecker
2012-06-29 8:03 ` Jiri Olsa
2012-06-29 11:37 ` Frederic Weisbecker
2012-06-19 15:48 ` [PATCH 10/23] perf, tool: Adding PERF_ATTR_SIZE_VER2 to the header swap check Jiri Olsa
2012-06-19 15:48 ` [PATCH 11/23] perf, tool: Remove unsused evsel parameter from machine__resolve_callchain Jiri Olsa
2012-06-19 15:48 ` [PATCH 12/23] perf, tool: Factor DSO symtab types to generic binary types Jiri Olsa
2012-06-19 15:48 ` [PATCH 13/23] perf, tool: Add interface to read DSO image data Jiri Olsa
2012-06-19 15:48 ` [PATCH 14/23] perf, tool: Add '.note' check into search for NOTE section Jiri Olsa
2012-07-06 10:59 ` [tip:perf/core] perf symbols: " tip-bot for Jiri Olsa
2012-06-19 15:48 ` [PATCH 15/23] perf, tool: Back [vdso] DSO with real data Jiri Olsa
2012-06-19 15:48 ` [PATCH 16/23] perf, tool: Add interface to arch registers sets Jiri Olsa
2012-06-19 15:48 ` [PATCH 17/23] perf, tool: Add libunwind dependency for dwarf cfi unwinding Jiri Olsa
2012-06-19 15:48 ` [PATCH 18/23] perf, tool: Support user regs and stack in sample parsing Jiri Olsa
2012-06-19 15:48 ` [PATCH 19/23] perf, tool: Support for dwarf cfi unwinding on post processing Jiri Olsa
2012-06-19 15:48 ` [PATCH 20/23] perf, tool: Adding round_up/round_down macros Jiri Olsa
2012-07-06 11:00 ` [tip:perf/core] perf tools: " tip-bot for Jiri Olsa
2012-06-19 15:48 ` [PATCH 21/23] perf, tool: Support for dwarf mode callchain on perf record Jiri Olsa
2012-06-19 15:48 ` [PATCH 22/23] perf, tool: Add dso data caching Jiri Olsa
2012-06-19 15:48 ` [PATCH 23/23] perf, tool: Add dso data caching tests Jiri Olsa
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