From: "Metzger, Markus T" <markus.t.metzger@intel.com>
To: Pedro Alves <palves@redhat.com>
Cc: "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
Subject: RE: [PATCH v2 03/13] btrace, linux: add perf event buffer abstraction
Date: Wed, 28 Jan 2015 16:50:00 -0000 [thread overview]
Message-ID: <A78C989F6D9628469189715575E55B231E6C839D@IRSMSX104.ger.corp.intel.com> (raw)
In-Reply-To: <54C7B38C.6090201@redhat.com>
> -----Original Message-----
> From: Pedro Alves [mailto:palves@redhat.com]
> Sent: Tuesday, January 27, 2015 4:50 PM
> To: Metzger, Markus T
> Cc: gdb-patches@sourceware.org
> Subject: Re: [PATCH v2 03/13] btrace, linux: add perf event buffer abstraction
>
> On 01/27/2015 03:31 PM, Metzger, Markus T wrote:
>
> >> Isn't there a better type to use here instead of "long long"?
> >> Why not size_t, if a host buffer size; uint64_t, if it's a fixed
> >> buffer format, assuming 64-bit here; or ULONGEST, the widest
> >> integer we support?
> >
> > I'm using the same data type as the respective fields in
> > struct perf_event_mmap_page (after resolving a few typedefs).
> >
> > I'm also fine to directly use __u64 or to use uint64_t.
>
> Ah, so fits in "fixed format" category. Let's go with
> uint64_t then.
gdb/nat/linux-btrace.c:450:24: error: assignment from incompatible pointer type [-Werror]
tinfo->bts.data_head = &header->data_head;
^
cc1: all warnings being treated as errors
The problem is that stdint.h defines uint64_t as unsigned int. We know
it's the same size on 64-bit systems so we could cast the pointer...
I'd rather stay with unsigned long long, though.
Markus.
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next prev parent reply other threads:[~2015-01-28 12:01 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-20 10:47 [PATCH v2 00/13] record btrace: prepare for a new trace format Markus Metzger
2014-11-20 10:47 ` [PATCH v2 09/13] btrace: identify cpu Markus Metzger
2014-11-20 10:47 ` [PATCH v2 07/13] btrace: extend struct btrace_insn Markus Metzger
2014-11-20 10:47 ` [PATCH v2 02/13] btrace: add format argument to supports_btrace Markus Metzger
2014-11-20 10:47 ` [PATCH v2 04/13] record btrace: add configuration struct Markus Metzger
2014-11-20 10:47 ` [PATCH v2 10/13] btrace: use the new cpu identifier Markus Metzger
2014-11-20 10:47 ` [PATCH v2 11/13] record-btrace: indicate gaps Markus Metzger
2014-11-20 17:32 ` Metzger, Markus T
2014-11-20 17:36 ` Eli Zaretskii
2014-11-20 10:47 ` [PATCH v2 12/13] configure: check for libipt Markus Metzger
2014-11-20 10:47 ` [PATCH v2 08/13] btrace: move and rename btrace-common Markus Metzger
2015-01-27 11:25 ` Pedro Alves
2015-01-28 17:58 ` Metzger, Markus T
2014-11-20 10:47 ` [PATCH v2 03/13] btrace, linux: add perf event buffer abstraction Markus Metzger
2015-01-27 15:31 ` Pedro Alves
2015-01-27 18:14 ` Metzger, Markus T
2015-01-27 18:15 ` Pedro Alves
2015-01-28 16:50 ` Metzger, Markus T [this message]
2014-11-20 10:47 ` [PATCH v2 05/13] record-btrace: add bts buffer size configuration option Markus Metzger
2014-11-20 16:25 ` Eli Zaretskii
2014-11-20 10:47 ` [PATCH v2 06/13] btrace: update btrace_compute_ftrace parameters Markus Metzger
2014-11-20 10:47 ` [PATCH v2 01/13] btrace: add struct btrace_data Markus Metzger
2015-01-27 11:29 ` Pedro Alves
2014-11-20 10:47 ` [PATCH v2 13/13] [wip] btrace: support Intel(R) Processor Trace Markus Metzger
2014-11-20 16:32 ` Eli Zaretskii
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