From: Leo Yan <leo.yan@linaro.org>
To: Andre Przywara <andre.przywara@arm.com>
Cc: Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Tan Xiaojun <tanxiaojun@huawei.com>,
James Clark <james.clark@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/5] perf: arm_spe: Add nested virt event decoding
Date: Sun, 27 Sep 2020 11:11:27 +0800 [thread overview]
Message-ID: <20200927031127.GC9677@leoy-ThinkPad-X240s> (raw)
In-Reply-To: <20200922101225.183554-4-andre.przywara@arm.com>
On Tue, Sep 22, 2020 at 11:12:23AM +0100, Andre Przywara wrote:
> The ARMv8.4 nested virtualisation extension can redirect system register
> accesses to a memory page controlled by the hypervisor. The SPE
> profiling feature in newer implementations can tag those memory accesses
> accordingly.
>
> Add the bit pattern describing this load/store type, so that the perf
> tool can decode it properly.
>
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
> ---
> tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
> index e633bb5b8e65..943e4155b246 100644
> --- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
> +++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
> @@ -398,6 +398,10 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf,
> buf += ret;
> blen -= ret;
> }
> + } else if ((payload & 0xfe) == 0x30) {
> + ret = snprintf(buf, buf_len, " NV-SYSREG");
> + buf += ret;
> + blen -= ret;
This change has been included in the patch "perf arm-spe: Add more sub
classes for operation packet" [1].
Thanks,
Leo
[1] https://lore.kernel.org/patchwork/patch/1288412/
> } else if (payload & 0x4) {
> ret = snprintf(buf, buf_len, " SIMD-FP");
> buf += ret;
> --
> 2.17.1
>
next prev parent reply other threads:[~2020-09-27 3:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-22 10:12 [PATCH 0/5] perf: arm64: Support ARMv8.3-SPE extensions Andre Przywara
2020-09-22 10:12 ` [PATCH 1/5] arm64: spe: Allow new bits in SPE filter register Andre Przywara
2020-09-27 2:51 ` Leo Yan
2020-09-22 10:12 ` [PATCH 2/5] perf: arm_spe: Add new event packet bits Andre Przywara
2020-09-27 3:03 ` Leo Yan
2020-09-22 10:12 ` [PATCH 3/5] perf: arm_spe: Add nested virt event decoding Andre Przywara
2020-09-27 3:11 ` Leo Yan [this message]
2020-09-22 10:12 ` [PATCH 4/5] perf: arm_spe: Decode memory tagging properties Andre Przywara
2020-09-27 3:19 ` Leo Yan
[not found] ` <20201013145103.GE1063281@kernel.org>
2020-10-13 14:52 ` Arnaldo Carvalho de Melo
2020-09-22 10:12 ` [PATCH 5/5] perf: arm_spe: Decode SVE events Andre Przywara
2020-09-27 3:30 ` Leo Yan
2020-09-28 10:15 ` André Przywara
2020-09-28 11:08 ` Leo Yan
2020-09-28 13:21 ` Dave Martin
2020-09-28 13:59 ` André Przywara
2020-09-28 14:47 ` Dave Martin
2020-09-29 2:19 ` Leo Yan
2020-09-29 14:03 ` Dave Martin
2020-09-30 10:34 ` Dave Martin
2020-09-30 11:04 ` Leo Yan
2020-10-05 10:15 ` Dave Martin
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