From: Leo Yan leo.yan@linaro.org
mainline inclusion from mainline-v5.11-rc1 commit 7488ffc4d981 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4NGPV CVE: NA
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The operation type packet is complex and contains subclass; the parsing flow causes deep indentation; for more readable, this patch introduces a new function arm_spe_pkt_desc_op_type() which is used for operation type parsing.
Signed-off-by: Leo Yan leo.yan@linaro.org Reviewed-by: Andre Przywara andre.przywara@arm.com Acked-by: Will Deacon will@kernel.org Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Al Grant Al.Grant@arm.com Cc: Arnaldo Carvalho de Melo acme@kernel.org Cc: Dave Martin Dave.Martin@arm.com Cc: Ingo Molnar mingo@redhat.com Cc: James Clark james.clark@arm.com Cc: Jiri Olsa jolsa@redhat.com Cc: John Garry john.garry@huawei.com Cc: Mark Rutland mark.rutland@arm.com Cc: Mathieu Poirier mathieu.poirier@linaro.org Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Wei Li liwei391@huawei.com Link: https://lore.kernel.org/r/20201119152441.6972-13-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Wei Li liwei391@huawei.com Reviewed-by: Yang Jihong yangjihong1@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- .../arm-spe-decoder/arm-spe-pkt-decoder.c | 79 +++++++++++-------- 1 file changed, 45 insertions(+), 34 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 88bcf7e5be76..d6c060f119b4 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 @@ -321,6 +321,50 @@ static int arm_spe_pkt_desc_event(const struct arm_spe_pkt *packet, return err; }
+static int arm_spe_pkt_desc_op_type(const struct arm_spe_pkt *packet, + char *buf, size_t buf_len) +{ + u64 payload = packet->payload; + int err = 0; + + switch (packet->index) { + case 0: + arm_spe_pkt_out_string(&err, &buf, &buf_len, + payload & 0x1 ? "COND-SELECT" : "INSN-OTHER"); + break; + case 1: + arm_spe_pkt_out_string(&err, &buf, &buf_len, + payload & 0x1 ? "ST" : "LD"); + + if (payload & 0x2) { + if (payload & 0x4) + arm_spe_pkt_out_string(&err, &buf, &buf_len, " AT"); + if (payload & 0x8) + arm_spe_pkt_out_string(&err, &buf, &buf_len, " EXCL"); + if (payload & 0x10) + arm_spe_pkt_out_string(&err, &buf, &buf_len, " AR"); + } else if (payload & 0x4) { + arm_spe_pkt_out_string(&err, &buf, &buf_len, " SIMD-FP"); + } + break; + case 2: + arm_spe_pkt_out_string(&err, &buf, &buf_len, "B"); + + if (payload & 0x1) + arm_spe_pkt_out_string(&err, &buf, &buf_len, " COND"); + if (payload & 0x2) + arm_spe_pkt_out_string(&err, &buf, &buf_len, " IND"); + + break; + default: + /* Unknown index */ + err = -1; + break; + } + + return err; +} + static int arm_spe_pkt_desc_addr(const struct arm_spe_pkt *packet, char *buf, size_t buf_len) { @@ -404,40 +448,7 @@ int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf, err = arm_spe_pkt_desc_event(packet, buf, buf_len); break; case ARM_SPE_OP_TYPE: - switch (idx) { - case 0: - arm_spe_pkt_out_string(&err, &buf, &blen, - payload & 0x1 ? "COND-SELECT" : "INSN-OTHER"); - break; - case 1: - arm_spe_pkt_out_string(&err, &buf, &blen, - payload & 0x1 ? "ST" : "LD"); - - if (payload & 0x2) { - if (payload & 0x4) - arm_spe_pkt_out_string(&err, &buf, &blen, " AT"); - if (payload & 0x8) - arm_spe_pkt_out_string(&err, &buf, &blen, " EXCL"); - if (payload & 0x10) - arm_spe_pkt_out_string(&err, &buf, &blen, " AR"); - } else if (payload & 0x4) { - arm_spe_pkt_out_string(&err, &buf, &blen, " SIMD-FP"); - } - break; - case 2: - arm_spe_pkt_out_string(&err, &buf, &blen, "B"); - - if (payload & 0x1) - arm_spe_pkt_out_string(&err, &buf, &blen, " COND"); - if (payload & 0x2) - arm_spe_pkt_out_string(&err, &buf, &blen, " IND"); - - break; - default: - /* Unknown index */ - err = -1; - break; - } + err = arm_spe_pkt_desc_op_type(packet, buf, buf_len); break; case ARM_SPE_DATA_SOURCE: case ARM_SPE_TIMESTAMP: