From 3d829724b16c5d2de42e6c9601c696c93a10bc61 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 19 Nov 2020 23:24:39 +0800 Subject: perf arm-spe: Add more sub classes for operation packet For the operation type packet payload with load/store class, it misses to support these sub classes: - A load/store targeting the general-purpose registers; - A load/store targeting unspecified registers; - 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 load/store sub classes, so that the perf tool can decode it properly. Inspired by Andre Przywara, refined the commit log and code for more clear description. Co-developed-by: Andre Przywara Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-15-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) 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 1d1354a0eef4..84d661aab54f 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 @@ -343,9 +343,23 @@ static int arm_spe_pkt_desc_op_type(const struct arm_spe_pkt *packet, arm_spe_pkt_out_string(&err, &buf, &buf_len, " EXCL"); if (payload & SPE_OP_PKT_AR) arm_spe_pkt_out_string(&err, &buf, &buf_len, " AR"); - } else if (SPE_OP_PKT_LDST_SUBCLASS_GET(payload) == - SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP) { + } + + switch (SPE_OP_PKT_LDST_SUBCLASS_GET(payload)) { + case SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP: arm_spe_pkt_out_string(&err, &buf, &buf_len, " SIMD-FP"); + break; + case SPE_OP_PKT_LDST_SUBCLASS_GP_REG: + arm_spe_pkt_out_string(&err, &buf, &buf_len, " GP-REG"); + break; + case SPE_OP_PKT_LDST_SUBCLASS_UNSPEC_REG: + arm_spe_pkt_out_string(&err, &buf, &buf_len, " UNSPEC-REG"); + break; + case SPE_OP_PKT_LDST_SUBCLASS_NV_SYSREG: + arm_spe_pkt_out_string(&err, &buf, &buf_len, " NV-SYSREG"); + break; + default: + break; } break; case SPE_OP_PKT_HDR_CLASS_BR_ERET: -- cgit v1.2.3-59-g8ed1b