From: Andi Kleen <ak@linux.intel.com>
To: John Garry <john.garry@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>,
peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
alexander.shishkin@linux.intel.com, namhyung@kernel.org,
wcohen@redhat.com, will.deacon@arm.com,
ganapatrao.kulkarni@cavium.com, catalin.marinas@arm.com,
mark.rutland@arm.com, xuwei5@hisilicon.com, linuxarm@huawei.com,
zhangshaokun@hisilicon.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 2/5] perf jevents: add support for arch recommended events
Date: Sat, 16 Dec 2017 10:47:01 -0800 [thread overview]
Message-ID: <20171216184701.GB25156@tassilo.jf.intel.com> (raw)
In-Reply-To: <5d322353-2785-a99f-bcd8-b948bd6cb09a@huawei.com>
> Won't this all potentially have a big maintainence cost?
No. It's all auto generated.
The only cost is slightly bigger binary size.
I would hope your event files are auto generated too.
> I just don't know how this schema scales with more archs and more platforms
> supported. It's just early days now...
Only perf will get slightly bigger, but memory is not exactly expensive.
In fact, the extra memory won't even be faulted in if it's not used,
so it's only disk space.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: ak@linux.intel.com (Andi Kleen)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 2/5] perf jevents: add support for arch recommended events
Date: Sat, 16 Dec 2017 10:47:01 -0800 [thread overview]
Message-ID: <20171216184701.GB25156@tassilo.jf.intel.com> (raw)
In-Reply-To: <5d322353-2785-a99f-bcd8-b948bd6cb09a@huawei.com>
> Won't this all potentially have a big maintainence cost?
No. It's all auto generated.
The only cost is slightly bigger binary size.
I would hope your event files are auto generated too.
> I just don't know how this schema scales with more archs and more platforms
> supported. It's just early days now...
Only perf will get slightly bigger, but memory is not exactly expensive.
In fact, the extra memory won't even be faulted in if it's not used,
so it's only disk space.
-Andi
next prev parent reply other threads:[~2017-12-16 18:47 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-05 16:13 [RFC PATCH 0/5] perf events patches for improved ARM64 support John Garry
2017-12-05 16:13 ` John Garry
2017-12-05 16:13 ` [RFC PATCH 1/5] perf jevents: add support for pmu events vendor subdirectory John Garry
2017-12-05 16:13 ` John Garry
2017-12-06 13:38 ` Jiri Olsa
2017-12-06 13:38 ` Jiri Olsa
2017-12-06 14:41 ` John Garry
2017-12-06 14:41 ` John Garry
2017-12-05 16:13 ` [RFC PATCH 2/5] perf jevents: add support for arch recommended events John Garry
2017-12-05 16:13 ` John Garry
2017-12-05 17:27 ` Andi Kleen
2017-12-05 17:27 ` Andi Kleen
2017-12-06 8:34 ` John Garry
2017-12-06 8:34 ` John Garry
2017-12-06 13:36 ` Jiri Olsa
2017-12-06 13:36 ` Jiri Olsa
2017-12-06 15:20 ` John Garry
2017-12-06 15:20 ` John Garry
2017-12-08 12:29 ` Jiri Olsa
2017-12-08 12:29 ` Jiri Olsa
2017-12-08 15:42 ` John Garry
2017-12-08 15:42 ` John Garry
2017-12-09 7:31 ` Jiri Olsa
2017-12-09 7:31 ` Jiri Olsa
2017-12-11 10:25 ` John Garry
2017-12-11 10:25 ` John Garry
2017-12-15 11:22 ` John Garry
2017-12-15 11:22 ` John Garry
2017-12-16 18:47 ` Andi Kleen [this message]
2017-12-16 18:47 ` Andi Kleen
2018-01-02 12:07 ` John Garry
2018-01-02 12:07 ` John Garry
2018-01-02 17:48 ` Andi Kleen
2018-01-02 17:48 ` Andi Kleen
2018-01-03 12:22 ` John Garry
2018-01-03 12:22 ` John Garry
2017-12-21 19:39 ` Jiri Olsa
2017-12-21 19:39 ` Jiri Olsa
2018-01-04 17:17 ` John Garry
2018-01-04 17:17 ` John Garry
2018-01-08 14:08 ` Jiri Olsa
2018-01-08 14:08 ` Jiri Olsa
2017-12-06 13:37 ` Jiri Olsa
2017-12-06 13:37 ` Jiri Olsa
2017-12-06 14:40 ` John Garry
2017-12-06 14:40 ` John Garry
2017-12-08 12:31 ` Jiri Olsa
2017-12-08 12:31 ` Jiri Olsa
2017-12-08 15:38 ` John Garry
2017-12-08 15:38 ` John Garry
2017-12-09 7:26 ` Jiri Olsa
2017-12-09 7:26 ` Jiri Olsa
2017-12-05 16:13 ` [RFC PATCH 3/5] perf vendor events arm64: add armv8 recommended events JSON John Garry
2017-12-05 16:13 ` John Garry
2017-12-05 16:13 ` [RFC PATCH 4/5] perf vendor events arm64: relocate thunderx2 JSON John Garry
2017-12-05 16:13 ` John Garry
2017-12-05 16:13 ` [RFC PATCH 5/5] perf vendor events arm64: add HiSilicon hip08 JSON John Garry
2017-12-05 16:13 ` John Garry
2017-12-06 16:42 ` [RFC PATCH 0/5] perf events patches for improved ARM64 support William Cohen
2017-12-06 16:42 ` William Cohen
2017-12-06 17:35 ` John Garry
2017-12-06 17:35 ` John Garry
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