From: Peter Zijlstra <peterz@infradead.org>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, acme@redhat.com, jolsa@redhat.com,
kim.phillips@amd.com, namhyung@kernel.org, irogers@google.com,
atrajeev@linux.vnet.ibm.com, maddy@linux.ibm.com,
mpe@ellerman.id.au
Subject: Re: [PATCH v1 01/13] perf/core: add union to struct perf_branch_entry
Date: Thu, 9 Sep 2021 21:03:42 +0200 [thread overview]
Message-ID: <20210909190342.GE4323@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <20210909075700.4025355-2-eranian@google.com>
On Thu, Sep 09, 2021 at 12:56:48AM -0700, Stephane Eranian wrote:
> diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
> index f92880a15645..eb11f383f4be 100644
> --- a/include/uapi/linux/perf_event.h
> +++ b/include/uapi/linux/perf_event.h
> @@ -1329,13 +1329,18 @@ union perf_mem_data_src {
> struct perf_branch_entry {
> __u64 from;
> __u64 to;
> - __u64 mispred:1, /* target mispredicted */
> - predicted:1,/* target predicted */
> - in_tx:1, /* in transaction */
> - abort:1, /* transaction abort */
> - cycles:16, /* cycle count to last branch */
> - type:4, /* branch type */
> - reserved:40;
> + union {
> + __u64 val; /* to make it easier to clear all fields */
> + struct {
> + __u64 mispred:1, /* target mispredicted */
> + predicted:1,/* target predicted */
> + in_tx:1, /* in transaction */
> + abort:1, /* transaction abort */
> + cycles:16, /* cycle count to last branch */
> + type:4, /* branch type */
> + reserved:40;
> + };
> + };
> };
Hurpmh... all other bitfields have ENDIAN_BITFIELD things except this
one. Power folks, could you please have a look?
next prev parent reply other threads:[~2021-09-09 19:04 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-09 7:56 [PATCH v1 00/13] perf/x86/amd: Add AMD Fam19h Branch Sampling support Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 01/13] perf/core: add union to struct perf_branch_entry Stephane Eranian
2021-09-09 19:03 ` Peter Zijlstra [this message]
2021-09-10 12:09 ` Michael Ellerman
2021-09-10 14:16 ` Michael Ellerman
2021-09-15 6:03 ` Stephane Eranian
2021-09-17 6:37 ` Madhavan Srinivasan
2021-09-17 6:48 ` Stephane Eranian
2021-09-17 7:05 ` Michael Ellerman
2021-09-17 7:39 ` Stephane Eranian
2021-09-17 12:38 ` Michael Ellerman
2021-09-17 16:42 ` Stephane Eranian
2021-09-19 10:27 ` Michael Ellerman
2021-09-09 7:56 ` [PATCH v1 02/13] x86/cpufeatures: add AMD Fam19h Branch Sampling feature Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 03/13] perf/x86/amd: add AMD Fam19h Branch Sampling support Stephane Eranian
2021-09-09 10:44 ` kernel test robot
2021-09-09 15:33 ` kernel test robot
2021-09-09 7:56 ` [PATCH v1 04/13] perf/x86/amd: add branch-brs helper event for Fam19h BRS Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 05/13] perf/x86/amd: enable branch sampling priv level filtering Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 06/13] perf/x86/amd: add AMD branch sampling period adjustment Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 07/13] perf/core: add idle hooks Stephane Eranian
2021-09-09 9:15 ` Peter Zijlstra
2021-09-09 10:42 ` kernel test robot
2021-09-09 11:02 ` kernel test robot
2021-09-09 7:56 ` [PATCH v1 08/13] perf/x86/core: " Stephane Eranian
2021-09-09 9:16 ` Peter Zijlstra
2021-09-09 7:56 ` [PATCH v1 09/13] perf/x86/amd: add idle hooks for branch sampling Stephane Eranian
2021-09-09 9:20 ` Peter Zijlstra
2021-09-09 7:56 ` [PATCH v1 10/13] perf tools: add branch-brs as a new event Stephane Eranian
2021-09-09 7:56 ` [PATCH v1 11/13] perf tools: improve IBS error handling Stephane Eranian
2021-09-13 19:34 ` Arnaldo Carvalho de Melo
2021-10-04 21:57 ` Kim Phillips
2021-10-04 23:44 ` Arnaldo Carvalho de Melo
2021-09-09 7:56 ` [PATCH v1 12/13] perf tools: improve error handling of AMD Branch Sampling Stephane Eranian
2021-10-04 21:57 ` Kim Phillips
2021-09-09 7:57 ` [PATCH v1 13/13] perf report: add addr_from/addr_to sort dimensions Stephane Eranian
2021-09-09 8:55 ` [PATCH v1 00/13] perf/x86/amd: Add AMD Fam19h Branch Sampling support Peter Zijlstra
2021-09-15 5:55 ` Stephane Eranian
2021-09-15 9:04 ` Peter Zijlstra
2021-10-28 18:30 ` Stephane Eranian
2021-09-27 20:17 ` Song Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210909190342.GE4323@worktop.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=acme@redhat.com \
--cc=atrajeev@linux.vnet.ibm.com \
--cc=eranian@google.com \
--cc=irogers@google.com \
--cc=jolsa@redhat.com \
--cc=kim.phillips@amd.com \
--cc=linux-kernel@vger.kernel.org \
--cc=maddy@linux.ibm.com \
--cc=mpe@ellerman.id.au \
--cc=namhyung@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).