CoreSight

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2619 discussions

[PATCH V2] coresight: etm4x: add AMBA id for Cortex-A55 and Cortex-A75

by Chunyan Zhang

From: Chunyan Zhang <chunyan.zhang(a)unisoc.com> Add AMBA UCI id to support Cortex-A55(Ananke) and Cortex-A75(Promethus). Signed-off-by: Bin Ji <bin.ji(a)unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang(a)unisoc.com> --- Changes since v1: * Addressed Mike's comments - changed to use CS_AMBA_UCI_ID(). --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index b20b6ff17cf6..8c4b0c46c8f3 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1713,6 +1713,8 @@ static const struct amba_id etm4_ids[] = { CS_AMBA_ID(0x000bb95a), /* Cortex-A72 */ CS_AMBA_ID(0x000bb959), /* Cortex-A73 */ CS_AMBA_UCI_ID(0x000bb9da, uci_id_etm4),/* Cortex-A35 */ + CS_AMBA_UCI_ID(0x000bbd05, uci_id_etm4),/* Cortex-A55 */ + CS_AMBA_UCI_ID(0x000bbd0a, uci_id_etm4),/* Cortex-A75 */ CS_AMBA_UCI_ID(0x000bbd0c, uci_id_etm4),/* Neoverse N1 */ CS_AMBA_UCI_ID(0x000f0205, uci_id_etm4),/* Qualcomm Kryo */ CS_AMBA_UCI_ID(0x000f0211, uci_id_etm4),/* Qualcomm Kryo */ -- 2.25.1

5 years

[PATCH] coresight: etm4x: add AMBA id for Cortex-A55 and Cortex-A75

by Chunyan Zhang

From: Bin Ji <bin.ji(a)unisoc.com> Add ETM amba id to support Cortex-A55(Ananke) and Cortex-A75(Promethus). Signed-off-by: Bin Ji <bin.ji(a)unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang(a)unisoc.com> --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index b20b6ff17cf6..66c6641c71ea 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1709,9 +1709,11 @@ static int etm4_remove(struct amba_device *adev) static const struct amba_id etm4_ids[] = { CS_AMBA_ID(0x000bb95d), /* Cortex-A53 */ + CS_AMBA_ID(0x000bbd05), /* Cortex-A55 */ CS_AMBA_ID(0x000bb95e), /* Cortex-A57 */ CS_AMBA_ID(0x000bb95a), /* Cortex-A72 */ CS_AMBA_ID(0x000bb959), /* Cortex-A73 */ + CS_AMBA_ID(0x000bbd0a), /* Cortex-A75 */ CS_AMBA_UCI_ID(0x000bb9da, uci_id_etm4),/* Cortex-A35 */ CS_AMBA_UCI_ID(0x000bbd0c, uci_id_etm4),/* Neoverse N1 */ CS_AMBA_UCI_ID(0x000f0205, uci_id_etm4),/* Qualcomm Kryo */ -- 2.25.1

5 years

[PATCH] perf tools: Update OpenCSD to v1.0.0

by James Clark

Replace the OCSD_INSTR switch statement with an if to fix compilation error about unhandled values and avoid this issue again in the future. Add new OCSD_GEN_TRC_ELEM_SYNC_MARKER and OCSD_GEN_TRC_ELEM_MEMTRANS enum values to fix unhandled value compilation error. Currently they are ignored. Increase the minimum version number to v1.0.0 now that new enum values are used that are only present in this version. Signed-off-by: James Clark <james.clark(a)arm.com> Cc: John Garry <john.garry(a)huawei.com> Cc: Will Deacon <will(a)kernel.org> Cc: Mathieu Poirier <mathieu.poirier(a)linaro.org> Cc: Leo Yan <leo.yan(a)linaro.org> Cc: Suzuki K Poulose <suzuki.poulose(a)arm.com> Cc: Mike Leach <mike.leach(a)linaro.org> Cc: Al Grant <al.grant(a)arm.com> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: Arnaldo Carvalho de Melo <acme(a)kernel.org> Cc: Mark Rutland <mark.rutland(a)arm.com> Cc: Alexander Shishkin <alexander.shishkin(a)linux.intel.com> Cc: Jiri Olsa <jolsa(a)redhat.com> Cc: Namhyung Kim <namhyung(a)kernel.org> --- tools/build/feature/test-libopencsd.c | 4 ++-- tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 15 ++++----------- 2 files changed, 6 insertions(+), 13 deletions(-) diff --git a/tools/build/feature/test-libopencsd.c b/tools/build/feature/test-libopencsd.c index 1547bc2c0950..52c790b0317b 100644 --- a/tools/build/feature/test-libopencsd.c +++ b/tools/build/feature/test-libopencsd.c @@ -4,9 +4,9 @@ /* * Check OpenCSD library version is sufficient to provide required features */ -#define OCSD_MIN_VER ((0 << 16) | (14 << 8) | (0)) +#define OCSD_MIN_VER ((1 << 16) | (0 << 8) | (0)) #if !defined(OCSD_VER_NUM) || (OCSD_VER_NUM < OCSD_MIN_VER) -#error "OpenCSD >= 0.14.0 is required" +#error "OpenCSD >= 1.0.0 is required" #endif int main(void) diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c index cd007cc9c283..3f4bc4050477 100644 --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c @@ -419,19 +419,10 @@ cs_etm_decoder__buffer_range(struct cs_etm_queue *etmq, packet->last_instr_subtype = elem->last_i_subtype; packet->last_instr_cond = elem->last_instr_cond; - switch (elem->last_i_type) { - case OCSD_INSTR_BR: - case OCSD_INSTR_BR_INDIRECT: + if (elem->last_i_type == OCSD_INSTR_BR || elem->last_i_type == OCSD_INSTR_BR_INDIRECT) packet->last_instr_taken_branch = elem->last_instr_exec; - break; - case OCSD_INSTR_ISB: - case OCSD_INSTR_DSB_DMB: - case OCSD_INSTR_WFI_WFE: - case OCSD_INSTR_OTHER: - default: + else packet->last_instr_taken_branch = false; - break; - } packet->last_instr_size = elem->last_instr_sz; @@ -572,6 +563,8 @@ static ocsd_datapath_resp_t cs_etm_decoder__gen_trace_elem_printer( case OCSD_GEN_TRC_ELEM_EVENT: case OCSD_GEN_TRC_ELEM_SWTRACE: case OCSD_GEN_TRC_ELEM_CUSTOM: + case OCSD_GEN_TRC_ELEM_SYNC_MARKER: + case OCSD_GEN_TRC_ELEM_MEMTRANS: default: break; } -- 2.28.0

5 years

Re: Reading and Decoding Data From ETB Buffer

by Mathieu Poirier

Adding the coresight mailing list On Tue, 12 Jan 2021 at 04:17, Ajay Bharadwaj <ajayrbharadwaj(a)gmail.com> wrote: > > Hi, > > I'm working on enabling STM and ETB support on Texas Instruments' platforms. > > Currently, I can write directly to the STM device in sysfs and read back > the encoded data from the ETB's buffer. I am using the Trace Packet > Lister (trc_pkt_lister) from Linaro's OpenCSD [1] to decode the data > obtained from the ETB. The decoded data matches what was written to the > STM (Albeit the data is reversed in some cases, this seems to be > expected according to the ARM specification). > > However, when I use the STM Source Console [2] instead of writing > directly to the STM device, I can still read back the encoded data from > the ETB buffer but OpenCSD cannot find any trace data in it. > > Is there any other tool that I can use instead of OpenCSD or am I doing > something wrong? Here are the commands I am running (I've tried using > the p_sys-t STP policy as well with the same result): > > Enabling CoreSight and STM Source Console: > 1. mkdir -p /config > 2. mount -t configfs none /config > 3. mkdir /config/stp-policy/stm0.policy > 4. mkdir /config/stp-policy/stm0.policy/console > 5. echo 1 > /sys/bus/coresight/devices/etb0/enable_sink > 6. echo stm0 > /sys/class/stm_source/console/stm_source_link > > Reading decoded data from ETB buffer: > 1. dd if=/dev/etb0 of=test.bin > > OpenCSD Output: > Trace Packet Lister: CS Decode library testing > ----------------------------------------------- > > ** Library Version : 0.14.4 > > Test Command Line:- > ./tests/bin/linux64/dbg/trc_pkt_lister -ss_dir > tests/snapshots/stm_only/ -src_name ETB_1 > > Trace Packet Lister : reading snapshot from path tests/snapshots/stm_only/ > Using ETB_1 as trace source > Trace Packet Lister : Protocol printer STM on Trace ID 0x1 > ID:1 END OF TRACE DATA > Trace Packet Lister : Trace buffer done, processed 16384 bytes. > > [1] > https://github.com/Linaro/OpenCSD/blob/master/decoder/tests/source/trc_pkt_… > [2] Driver: hwtracing/stm/console.c > > Any help or guidance would be much appreciated. > > Regards, > Ajay Bharadwaj

5 years

CHARITY WORK

by Majid Al Futtaim

I intend to give you a portion of my wealth as a free-will financial donation to you, Respond to partake. Majid Al Futtaim

5 years

[PATCH] perf: cs-etm: update ETM metadata format

by Mike Leach

The current fixed metadata version format (version 0), means that adding metadata parameter items renders files from a previous version of perf unreadable. Per CPU parameters appear in a fixed order, but there is no field to indicate the number of ETM parameters per CPU. This patch updates the per CPU parameter blocks to include a NR_PARAMs value which indicates the number of parameters in the block. The header version is incremented to 1. Fixed ordering is retained, new ETM parameters are added to the end of the list. The reader code is updated to be able to read current version 0 files, For version 1, the reader will read the number of parameters in the per CPU block. This allows the reader to process older or newer files that may have different numbers of parameters than in use at the time perf was built. Signed-off-by: Mike Leach <mike.leach(a)linaro.org> --- tools/perf/arch/arm/util/cs-etm.c | 3 +- tools/perf/util/cs-etm.c | 171 ++++++++++++++++++++++++------ tools/perf/util/cs-etm.h | 22 +++- 3 files changed, 159 insertions(+), 37 deletions(-) diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c index bd446aba64f7..1876cdf146a0 100644 --- a/tools/perf/arch/arm/util/cs-etm.c +++ b/tools/perf/arch/arm/util/cs-etm.c @@ -629,6 +629,7 @@ static void cs_etm_get_metadata(int cpu, u32 *offset, /* Build generic header portion */ info->priv[*offset + CS_ETM_MAGIC] = magic; info->priv[*offset + CS_ETM_CPU] = cpu; + info->priv[*offset + CS_ETM_NR_PARAMS] = increment - CS_ETM_NR_PARAMS - 1; /* Where the next CPU entry should start from */ *offset += increment; } @@ -674,7 +675,7 @@ static int cs_etm_info_fill(struct auxtrace_record *itr, /* First fill out the session header */ info->type = PERF_AUXTRACE_CS_ETM; - info->priv[CS_HEADER_VERSION_0] = 0; + info->priv[CS_HEADER_VERSION_0] = CS_HEADER_CURRENT_VERSION; info->priv[CS_PMU_TYPE_CPUS] = type << 32; info->priv[CS_PMU_TYPE_CPUS] |= nr_cpu; info->priv[CS_ETM_SNAPSHOT] = ptr->snapshot_mode; diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index a2a369e2fbb6..394331aa058a 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -2443,6 +2443,7 @@ static const char * const cs_etm_global_header_fmts[] = { static const char * const cs_etm_priv_fmts[] = { [CS_ETM_MAGIC] = " Magic number %llx\n", [CS_ETM_CPU] = " CPU %lld\n", + [CS_ETM_NR_PARAMS] = " NR_PARAMS %llx\n", [CS_ETM_ETMCR] = " ETMCR %llx\n", [CS_ETM_ETMTRACEIDR] = " ETMTRACEIDR %llx\n", [CS_ETM_ETMCCER] = " ETMCCER %llx\n", @@ -2452,6 +2453,7 @@ static const char * const cs_etm_priv_fmts[] = { static const char * const cs_etmv4_priv_fmts[] = { [CS_ETM_MAGIC] = " Magic number %llx\n", [CS_ETM_CPU] = " CPU %lld\n", + [CS_ETM_NR_PARAMS] = " NR_PARAMS %llx\n", [CS_ETMV4_TRCCONFIGR] = " TRCCONFIGR %llx\n", [CS_ETMV4_TRCTRACEIDR] = " TRCTRACEIDR %llx\n", [CS_ETMV4_TRCIDR0] = " TRCIDR0 %llx\n", @@ -2461,24 +2463,127 @@ static const char * const cs_etmv4_priv_fmts[] = { [CS_ETMV4_TRCAUTHSTATUS] = " TRCAUTHSTATUS %llx\n", }; +static const char * const param_unk_fmt = + " Unknown parameter [%d] %llx\n"; +static const char * const magic_unk_fmt = + " Magic number Unknown %llx\n"; + static void cs_etm__print_auxtrace_info(__u64 *val, int num) { - int i, j, cpu = 0; + int i, j, cpu = 0, version, nr_params; + __u64 magic; + fprintf(stdout, " Reader Header version %llx\n", + (__u64)CS_HEADER_CURRENT_VERSION); for (i = 0; i < CS_HEADER_VERSION_0_MAX; i++) fprintf(stdout, cs_etm_global_header_fmts[i], val[i]); + version = val[0]; for (i = CS_HEADER_VERSION_0_MAX; cpu < num; cpu++) { - if (val[i] == __perf_cs_etmv3_magic) - for (j = 0; j < CS_ETM_PRIV_MAX; j++, i++) - fprintf(stdout, cs_etm_priv_fmts[j], val[i]); - else if (val[i] == __perf_cs_etmv4_magic) - for (j = 0; j < CS_ETMV4_PRIV_MAX; j++, i++) - fprintf(stdout, cs_etmv4_priv_fmts[j], val[i]); - else + /* common header block */ + magic = val[i]; + fprintf(stdout, cs_etm_priv_fmts[0], val[i++]); + fprintf(stdout, cs_etm_priv_fmts[1], val[i++]); + + /* nr param only present in version 1 */ + if (version) { + nr_params = val[i]; + fprintf(stdout, cs_etm_priv_fmts[2], val[i++]); + } + + if (magic == __perf_cs_etmv3_magic) { + /* version 0 - fixed number of params */ + if (!version) + nr_params = CS_ETM_NR_PARAMS_V0; + + /* after common block */ + for (j = 3; j < nr_params + 3; j++, i++) { + /* if newer record - could be excess params */ + if (j >= CS_ETM_PRIV_MAX) + fprintf(stdout, param_unk_fmt, j, val[i]); + else + fprintf(stdout, cs_etm_priv_fmts[j], val[i]); + } + } else if (magic == __perf_cs_etmv4_magic) { + /* version 0 - fixed number of params */ + if (!version) + nr_params = CS_ETMV4_NR_PARAMS_V0; + + /* after common block */ + for (j = 3; j < nr_params + 3; j++, i++) { + /* if newer record - could be excess params */ + if (j >= CS_ETMV4_PRIV_MAX) + fprintf(stdout, param_unk_fmt, j, val[i]); + else + fprintf(stdout, cs_etmv4_priv_fmts[j], val[i]); + } + } else { /* failure.. return */ + fprintf(stdout, magic_unk_fmt, magic); return; + } + } +} + +/* + * Read a single cpu parameter block from the auxtrace_info priv block. + * + * For version 1 there is a per cpu nr_params entry. If we are handling + * version 1 file, then there may be less, the same, or more params + * indicated by this value than the compile time number we understand. + * + * For a version 0 info block, there are a fixed number, and we need to + * fill out the nr_param value in the metadata we create. + */ +static u64 *cs_etm__create_meta_blk(u64 *buff_in, int *buff_in_offset, + int out_blk_size, int nr_params_v0) +{ + u64 *metadata = NULL; + int hdr_version; + int nr_in_params, nr_out_params, nr_cmn_params; + int i, k; + + metadata = zalloc(sizeof(*metadata) * out_blk_size); + if (!metadata) + return NULL; + + /* read block current index & version */ + i = *buff_in_offset; + hdr_version = buff_in[CS_HEADER_VERSION_0]; + + if (!hdr_version) { + /* read version 0 info block into a version 1 metadata block */ + nr_in_params = nr_params_v0; + metadata[CS_ETM_MAGIC] = buff_in[i + CS_ETM_MAGIC]; + metadata[CS_ETM_CPU] = buff_in[i + CS_ETM_CPU]; + metadata[CS_ETM_NR_PARAMS] = nr_in_params; + /* remaining block params at offset +1 from source */ + for (k = 2; k < nr_in_params; k++) + metadata[k+1] = buff_in[i + k]; + /* version 0 has 2 common params */ + nr_cmn_params = 2; + } else { + /* read version 1 info block - input and output nr_params may differ */ + /* version 1 has 3 common params */ + nr_cmn_params = 3; + nr_in_params = buff_in[i + CS_ETM_NR_PARAMS]; + + /* if input has more params than output - skip excess */ + nr_out_params = nr_in_params + nr_cmn_params; + if (nr_out_params > out_blk_size) + nr_out_params = out_blk_size; + + for (k = 0; k < nr_out_params; k++) + metadata[k] = buff_in[i + k]; + + /* record the actual nr params we copied */ + metadata[CS_ETM_NR_PARAMS] = nr_out_params - nr_cmn_params; } + + /* adjust in offset by number of in params used */ + i += nr_in_params + nr_cmn_params; + *buff_in_offset = i; + return metadata; } int cs_etm__process_auxtrace_info(union perf_event *event, @@ -2492,11 +2597,12 @@ int cs_etm__process_auxtrace_info(union perf_event *event, int info_header_size; int total_size = auxtrace_info->header.size; int priv_size = 0; - int num_cpu; - int err = 0, idx = -1; - int i, j, k; + int num_cpu, trcidr_idx; + int err = 0; + int i, j; u64 *ptr, *hdr = NULL; u64 **metadata = NULL; + u64 hdr_version; /* * sizeof(auxtrace_info_event::type) + @@ -2512,8 +2618,9 @@ int cs_etm__process_auxtrace_info(union perf_event *event, /* First the global part */ ptr = (u64 *) auxtrace_info->priv; - /* Look for version '0' of the header */ - if (ptr[0] != 0) + /* Look for version of the header */ + hdr_version = ptr[0]; + if (hdr_version > CS_HEADER_CURRENT_VERSION) return -EINVAL; hdr = zalloc(sizeof(*hdr) * CS_HEADER_VERSION_0_MAX); @@ -2552,35 +2659,31 @@ int cs_etm__process_auxtrace_info(union perf_event *event, */ for (j = 0; j < num_cpu; j++) { if (ptr[i] == __perf_cs_etmv3_magic) { - metadata[j] = zalloc(sizeof(*metadata[j]) * - CS_ETM_PRIV_MAX); - if (!metadata[j]) { - err = -ENOMEM; - goto err_free_metadata; - } - for (k = 0; k < CS_ETM_PRIV_MAX; k++) - metadata[j][k] = ptr[i + k]; + metadata[j] = + cs_etm__create_meta_blk(ptr, &i, + CS_ETM_PRIV_MAX, + CS_ETM_NR_PARAMS_V0); /* The traceID is our handle */ - idx = metadata[j][CS_ETM_ETMTRACEIDR]; - i += CS_ETM_PRIV_MAX; + trcidr_idx = CS_ETM_ETMTRACEIDR; + } else if (ptr[i] == __perf_cs_etmv4_magic) { - metadata[j] = zalloc(sizeof(*metadata[j]) * - CS_ETMV4_PRIV_MAX); - if (!metadata[j]) { - err = -ENOMEM; - goto err_free_metadata; - } - for (k = 0; k < CS_ETMV4_PRIV_MAX; k++) - metadata[j][k] = ptr[i + k]; + metadata[j] = + cs_etm__create_meta_blk(ptr, &i, + CS_ETMV4_PRIV_MAX, + CS_ETMV4_NR_PARAMS_V0); /* The traceID is our handle */ - idx = metadata[j][CS_ETMV4_TRCTRACEIDR]; - i += CS_ETMV4_PRIV_MAX; + trcidr_idx = CS_ETMV4_TRCTRACEIDR; + } + + if (!metadata[j]) { + err = -ENOMEM; + goto err_free_metadata; } /* Get an RB node for this CPU */ - inode = intlist__findnew(traceid_list, idx); + inode = intlist__findnew(traceid_list, metadata[j][trcidr_idx]); /* Something went wrong, no need to continue */ if (!inode) { diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h index 4ad925d6d799..fffc6b50beb9 100644 --- a/tools/perf/util/cs-etm.h +++ b/tools/perf/util/cs-etm.h @@ -24,16 +24,28 @@ enum { CS_HEADER_VERSION_0_MAX, }; +/* + * Update the version for new format. + * + * New version 1 format adds a param count to the per cpu metadata. + * This allows easy adding of new metadata parameters. + * Requires that new params always added after current ones. + * Also allows client reader to handle file versions that are different by + * checking the number of params in the file vs the number expected. + */ +#define CS_HEADER_CURRENT_VERSION 1 + /* Beginning of header common to both ETMv3 and V4 */ enum { CS_ETM_MAGIC, CS_ETM_CPU, + CS_ETM_NR_PARAMS, }; /* ETMv3/PTM metadata */ enum { /* Dynamic, configurable parameters */ - CS_ETM_ETMCR = CS_ETM_CPU + 1, + CS_ETM_ETMCR = CS_ETM_NR_PARAMS + 1, CS_ETM_ETMTRACEIDR, /* RO, taken from sysFS */ CS_ETM_ETMCCER, @@ -41,10 +53,13 @@ enum { CS_ETM_PRIV_MAX, }; +/* define fixed version 0 length - allow new format reader to read old files. */ +#define CS_ETM_NR_PARAMS_V0 (CS_ETM_ETMIDR - CS_ETM_ETMCR + 1) + /* ETMv4 metadata */ enum { /* Dynamic, configurable parameters */ - CS_ETMV4_TRCCONFIGR = CS_ETM_CPU + 1, + CS_ETMV4_TRCCONFIGR = CS_ETM_NR_PARAMS + 1, CS_ETMV4_TRCTRACEIDR, /* RO, taken from sysFS */ CS_ETMV4_TRCIDR0, @@ -55,6 +70,9 @@ enum { CS_ETMV4_PRIV_MAX, }; +/* define fixed version 0 length - allow new format reader to read old files. */ +#define CS_ETMV4_NR_PARAMS_V0 (CS_ETMV4_TRCAUTHSTATUS - CS_ETMV4_TRCCONFIGR + 1) + /* * ETMv3 exception encoding number: * See Embedded Trace Macrocell spcification (ARM IHI 0014Q) -- 2.17.1

5 years

Invitation to Information Security and Data Management training Feb 2021

by FDC Training

5 years

Private Label (Clothing)

by Ashley Rosa

Hello, Who can I speak to about branding and custom apparel for your brand? One of the largest custom clothing manufacturer, our office is in London, Sydney, HQ in Beverly Hills, California. We currently work with some top brands and companies worldwide and would love to discuss your branding and custom clothing with you. If you can direct me in the right direction, I would truly appreciate that, as we are factory direct and can save you 30% cost on your bills. Items we manufacture: - T-Shirts - Hoodies - Jackets - Activewear - Towels - Bags, clutches, and pouches - Hats - Promotional items - Custom Cotton Masks - Sublimated Apparel - Sports Uniform We are very creative, innovative, and offer you a full design team and direct factory. We will do everything right, and provide amazing quality at competitive prices which can be very effective for your brand development and growth. Let me know if you have a moment to discuss this. I can also get some designs done for you. Our MOQ is 500 pcs per style, multiple sizes. Let me know your thoughts Thanks, -- The Dioz Group of Companies. HQ: Beverly Hills, California Corporate offices in Australia and U.K Phone: 310 800 6438 Website: oasisapparel.com <http://ec2-52-26-194-35.us-west-2.compute.amazonaws.com/x/d?c=10608409&l=fa…> You may unsubscribe <http://ec2-52-26-194-35.us-west-2.compute.amazonaws.com/x/u?u=20891784-6ed9…> to stop receiving our emails.

5 years

OpenCSD v1.0.0 release.

by Mike Leach

The latest version of OpenCSD has been released. This v1.0.0 release adds in support for ETE - an extended trace protocol, used by ARM PEs that have the FEAT_ETE architectural feature. (See ARM future architecture docs). The documentation 'man' file is added in this release. This release also adds a fix for github issue #33. Note: the protocol update results in additional output packet types, This requires an update to the perf cs-etm-decoder code to handle new enum values, and the makefile to ensure that perf builds with 1.0.0 using this extension. The patch for this can be seen here:- https://lists.linaro.org/pipermail/coresight/2021-January/005496.html Regards Mike -- Mike Leach Principal Engineer, ARM Ltd. Manchester Design Centre. UK

5 years

[PATCH] coresight: etm-perf: Add support for PID tracing for kernel at EL2

by Suzuki K Poulose

When the kernel is running at EL2, the PID is stored in CONTEXTIDR_EL2. So, tracing CONTEXTIDR_EL1 doesn't give us the pid of the process. Thus we should trace the VMID with VMIDOPT set to trace CONTEXTIDR_EL2 instead of VMID. Given that we have an existing config option "contextid" and this will be useful for tracing virtual machines (when we get to support virtualization). So instead, this patch adds a new option, contextid_in_vmid as a separate config. Thus on an EL2 kernel, we will have two options available for the perf tool. However, to make it easier for the user to do pid tracing, we add a new format which will default to "contextid" (on EL1 kernel) or "contextid_in_vmid" (on EL2 kernel). So that the user doesn't have to bother which EL the kernel is running. i.e, perf record -e cs_etm/pid/u -- will always do the "pid" tracing, independent of the kernel EL. Also, the perf tool will be updated to automatically select "pid" config instead of the "contextid" for system wide/CPU wide mode. Cc: Mathieu Poirier <mathieu.poirier(a)linaro.org> Cc: Al Grant <al.grant(a)arm.com> Cc: Mike Leach <mike.leach(a)linaro.org> Cc: Leo Yan <leo.yan(a)linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose(a)arm.com> --- Changes since previous version: - Fix build break on 32bit kernel (kernel test robot <lkp(a)intel.com>) --- .../hwtracing/coresight/coresight-etm-perf.c | 18 ++++++++++++++++++ .../hwtracing/coresight/coresight-etm4x-core.c | 9 +++++++++ include/linux/coresight-pmu.h | 11 +++++++---- 3 files changed, 34 insertions(+), 4 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index bdc34ca449f7..f13c3a7bbc84 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -30,14 +30,32 @@ static DEFINE_PER_CPU(struct coresight_device *, csdev_src); /* ETMv3.5/PTM's ETMCR is 'config' */ PMU_FORMAT_ATTR(cycacc, "config:" __stringify(ETM_OPT_CYCACC)); PMU_FORMAT_ATTR(contextid, "config:" __stringify(ETM_OPT_CTXTID)); +PMU_FORMAT_ATTR(contextid_in_vmid, "config:" __stringify(ETM_OPT_CTXTID_IN_VMID)); PMU_FORMAT_ATTR(timestamp, "config:" __stringify(ETM_OPT_TS)); PMU_FORMAT_ATTR(retstack, "config:" __stringify(ETM_OPT_RETSTK)); /* Sink ID - same for all ETMs */ PMU_FORMAT_ATTR(sinkid, "config2:0-31"); +static ssize_t format_attr_pid_show(struct device *dev, + struct device_attribute *attr, + char *page) +{ + int pid_fmt = ETM_OPT_CTXTID; + +#ifdef CONFIG_CORESIGHT_SOURCE_ETM4X + if (is_kernel_in_hyp_mode()) + pid_fmt = ETM_OPT_CTXTID_IN_VMID; +#endif + return sprintf(page, "config:%d\n", pid_fmt); +} + +struct device_attribute format_attr_pid = __ATTR(pid, 0444, format_attr_pid_show, NULL); + static struct attribute *etm_config_formats_attr[] = { &format_attr_cycacc.attr, &format_attr_contextid.attr, + &format_attr_contextid_in_vmid.attr, + &format_attr_pid.attr, &format_attr_timestamp.attr, &format_attr_retstack.attr, &format_attr_sinkid.attr, diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index b20b6ff17cf6..8b7c7a8b2874 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -477,6 +477,15 @@ static int etm4_parse_event_config(struct etmv4_drvdata *drvdata, /* bit[6], Context ID tracing bit */ config->cfg |= BIT(ETM4_CFG_BIT_CTXTID); + /* Do not enable VMID tracing if we are not running in EL2 */ + if (attr->config & BIT(ETM_OPT_CTXTID_IN_VMID)) { + if (!is_kernel_in_hyp_mode()) { + ret = -EINVAL; + goto out; + } + config->cfg |= BIT(ETM4_CFG_BIT_VMID) | BIT(ETM4_CFG_BIT_VMID_OPT); + } + /* return stack - enable if selected and supported */ if ((attr->config & BIT(ETM_OPT_RETSTK)) && drvdata->retstack) /* bit[12], Return stack enable bit */ diff --git a/include/linux/coresight-pmu.h b/include/linux/coresight-pmu.h index b0e35eec6499..927c6285ce5d 100644 --- a/include/linux/coresight-pmu.h +++ b/include/linux/coresight-pmu.h @@ -11,16 +11,19 @@ #define CORESIGHT_ETM_PMU_SEED 0x10 /* ETMv3.5/PTM's ETMCR config bit */ -#define ETM_OPT_CYCACC 12 -#define ETM_OPT_CTXTID 14 -#define ETM_OPT_TS 28 -#define ETM_OPT_RETSTK 29 +#define ETM_OPT_CYCACC 12 +#define ETM_OPT_CTXTID 14 +#define ETM_OPT_CTXTID_IN_VMID 15 +#define ETM_OPT_TS 28 +#define ETM_OPT_RETSTK 29 /* ETMv4 CONFIGR programming bits for the ETM OPTs */ #define ETM4_CFG_BIT_CYCACC 4 #define ETM4_CFG_BIT_CTXTID 6 +#define ETM4_CFG_BIT_VMID 7 #define ETM4_CFG_BIT_TS 11 #define ETM4_CFG_BIT_RETSTK 12 +#define ETM4_CFG_BIT_VMID_OPT 15 static inline int coresight_get_trace_id(int cpu) { -- 2.24.1

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