kernel/git/stable/linux.git/tools/perf/util/amd-sample-raw.c, branch master

perf amd ibs: Decode Streaming-store flag in IBS OP raw dump

2026-05-23T00:32:12+00:00

IBS OP on Zen6 and future platform can tag IBS samples that originate from streaming-store instruction. When the PMU advertises this feature, interpret IBS_OP_DATA2[8] bit as the streaming store indicator and show it in the raw dump output. Signed-off-by: Ravi Bangoria Acked-by: Namhyung Kim Cc: Ananth Narayan Cc: Dapeng Mi Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Manali Shukla Cc: Peter Zijlstra Cc: Sandipan Das Cc: Santosh Shukla Signed-off-by: Arnaldo Carvalho de Melo

perf amd ibs: Decode Remote-Socket flag in IBS OP raw dump

2026-05-23T00:31:53+00:00

IBS OP on Zen6 and future platform can mark a data source as coming from a remote socket. When the PMU advertises this feature, interpret IBS_OP_DATA2[9] bit as the Remote-Socket indicator and show it in the raw dump output. Signed-off-by: Ravi Bangoria Acked-by: Namhyung Kim Cc: Ananth Narayan Cc: Dapeng Mi Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Manali Shukla Cc: Peter Zijlstra Cc: Sandipan Das Cc: Santosh Shukla Signed-off-by: Arnaldo Carvalho de Melo

perf amd ibs: Make Fetch status bits dependent on PhyAddrValid for newer platforms

2026-05-23T00:31:38+00:00

On Zen6 and future platforms, IBS_FETCH_CTL status fields are valid only if IBS_FETCH_CTL[IbsPhyAddrValid] is set. Same for IBS_FETCH_CTL_EXT. Add these checks while decoding IBS MSRs. Unfortunately, there is no CPUID bit to indicate the change. Fallback to Family/Model check. Signed-off-by: Ravi Bangoria Acked-by: Namhyung Kim Cc: Ananth Narayan Cc: Dapeng Mi Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Manali Shukla Cc: Peter Zijlstra Cc: Sandipan Das Cc: Santosh Shukla Signed-off-by: Arnaldo Carvalho de Melo

perf amd ibs: Suppress bogus TlbRefillLat and DCPhysAd on Zen4+

2026-05-23T00:31:26+00:00

On Zen4 (and future) CPUs, IBS_OP_DATA3[TlbRefillLat] is valid only if IBS_OP_DATA3[DcPhyAddrValid] is set. Similarly, IBS_DC_PHYSADDR is valid if IBS_OP_DATA3[DcLinAddrValid] is _also_ set. Add these checks while decoding IBS MSRs. When IBS is triggered by an unprivileged user, the kernel now zeroes PhysAddr before storing raw IBS register values in the perf sample. The perf tool, however, still outputs these zero physical addresses, which serves no purpose. So avoid printing zero physical addresses. Instead of explicit family/model checks use the !zen4_ibs_extensions as a proxy flag to cover Zen 3 and earlier revisions. Signed-off-by: Ravi Bangoria Acked-by: Namhyung Kim Cc: Ananth Narayan Cc: Dapeng Mi Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Manali Shukla Cc: Peter Zijlstra Cc: Sandipan Das Cc: Santosh Shukla Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Change env variable to session

2025-07-25T17:37:56+00:00

The session holds a perf_env pointer env. In UI code container_of is used to turn the env to a session, but this assumes the session header's env is in use. Rather than a dubious container_of, hold the session in the evlist and derive the env from the session with evsel__env, perf_session__env, etc. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250724163302.596743-11-irogers@google.com Signed-off-by: Namhyung Kim

Merge tag 'perf-tools-for-v6.16-1-2025-06-03' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

2025-06-03T22:11:44+00:00

Pull perf tools updates from Arnaldo Carvalho de Melo: "perf report/top/annotate TUI: - Accept the left arrow key as a Zoom out if done on the first column - Show if source code toggle status in title, to help spotting bugs with the various disassemblers (capstone, llvm, objdump) - Provide feedback on unhandled hotkeys Build: - Better inform when certain features are not available with warnings in the build process and in 'perf version --build-options' or 'perf -vv' perf record: - Improve the --off-cpu code by synthesizing events for switch-out -> switch-in intervals using a BPF program. This can be fine tuned using a --off-cpu-thresh knob perf report: - Add 'tgid' sort key perf mem/c2c: - Add 'op', 'cache', 'snoop', 'dtlb' output fields - Add support for 'ldlat' on AMD IBS (Instruction Based Sampling) perf ftrace: - Use process/session specific trace settings instead of messing with the global ftrace knobs perf trace: - Implement syscall summary in BPF - Support --summary-mode=cgroup - Always print return value for syscalls returning a pid - The rseq and set_robust_list don't return a pid, just -errno perf lock contention: - Symbolize zone->lock using BTF - Add -J/--inject-delay option to estimate impact on application performance by optimization of kernel locking behavior perf stat: - Improve hybrid support for the NMI watchdog warning Symbol resolution: - Handle 'u' and 'l' symbols in /proc/kallsyms, resolving some Rust symbols - Improve Rust demangler Hardware tracing: Intel PT: - Fix PEBS-via-PT data_src - Do not default to recording all switch events - Fix pattern matching with python3 on the SQL viewer script arm64: - Fixups for the hip08 hha PMU Vendor events: - Update Intel events/metrics files for alderlake, alderlaken, arrowlake, bonnell, broadwell, broadwellde, broadwellx, cascadelakex, clearwaterforest, elkhartlake, emeraldrapids, grandridge, graniterapids, haswell, haswellx, icelake, icelakex, ivybridge, ivytown, jaketown, lunarlake, meteorlake, nehalemep, nehalemex, rocketlake, sandybridge, sapphirerapids, sierraforest, skylake, skylakex, snowridgex, tigerlake, westmereep-dp, westmereep-sp, westmereep-sx python support: - Add support for event counts in the python binding, add a counting.py example perf list: - Display the PMU name associated with a perf metric in JSON perf test: - Hybrid improvements for metric value validation test - Fix LBR test by ignoring idle task - Add AMD IBS sw filter ana d'ldlat' tests - Add 'perf trace --summary-mode=cgroup' test - Add tests for the various language symbol demanglers Miscellaneous: - Allow specifying the cpu an event will be tied using '-e event/cpu=N/' - Sync various headers with the kernel sources - Add annotations to use clang's -Wthread-safety and fix some problems it detected - Make dump_stack() use perf's symbol resolution to provide better backtraces - Intel TPEBS support cleanups and fixes. TPEBS stands for Timed PEBS (Precision Event-Based Sampling), that adds timing info, the retirement latency of instructions - Various memory allocation (some detected by ASAN) and reference counting fixes - Add a 8-byte aligned PERF_RECORD_COMPRESSED2 to replace PERF_RECORD_COMPRESSED - Skip unsupported event types in perf.data files, don't stop when finding one - Improve lookups using hashmaps and binary searches" * tag 'perf-tools-for-v6.16-1-2025-06-03' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (206 commits) perf callchain: Always populate the addr_location map when adding IP perf lock contention: Reject more than 10ms delays for safety perf trace: Set errpid to false for rseq and set_robust_list perf symbol: Move demangling code out of symbol-elf.c perf trace: Always print return value for syscalls returning a pid perf script: Print PERF_AUX_FLAG_COLLISION flag perf mem: Show absolute percent in mem_stat output perf mem: Display sort order only if it's available perf mem: Describe overhead calculation in brief perf record: Fix incorrect --user-regs comments Revert "perf thread: Ensure comm_lock held for comm_list" perf test trace_summary: Skip --bpf-summary tests if no libbpf perf test intel-pt: Skip jitdump test if no libelf perf intel-tpebs: Avoid race when evlist is being deleted perf test demangle-java: Don't segv if demangling fails perf symbol: Fix use-after-free in filename__read_build_id perf pmu: Avoid segv for missing name/alias_name in wildcarding perf machine: Factor creating a "live" machine out of dwarf-unwind perf test: Add AMD IBS sw filter test perf mem: Count L2 HITM for c2c statistic ...

perf amd ibs: Incorporate Zen5 DTLB and PageSize information

2025-04-30T01:30:46+00:00

IBS Op PMU on Zen5 reports DTLB and page size information differently compared to prior generation. IBS_OP_DATA3 Zen3/4 Zen5 ---------------------------------------------------------------- 19 IbsDcL2TlbHit1G Reserved ---------------------------------------------------------------- 6 IbsDcL2tlbHit2M Reserved ---------------------------------------------------------------- 5 IbsDcL1TlbHit1G PageSize: 4 IbsDcL1TlbHit2M 0 - 4K 1 - 2M 2 - 1G 3 - Reserved Valid only if IbsDcPhyAddrValid = 1 ---------------------------------------------------------------- 3 IbsDcL2TlbMiss IbsDcL2TlbMiss Valid only if IbsDcPhyAddrValid = 1 ---------------------------------------------------------------- 2 IbsDcL1tlbMiss IbsDcL1tlbMiss Valid only if IbsDcPhyAddrValid = 1 ---------------------------------------------------------------- Kernel expose this change as "dtlb_pgsize" capability in PMU sysfs. Change IBS register raw-dump logic according to new bit definitions. Signed-off-by: Ravi Bangoria Cc: Ananth Narayan Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Joe Mario Cc: Kan Liang Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Sandipan Das Cc: Santosh Shukla Cc: Stephane Eranian Link: https://lore.kernel.org/r/20250429035938.1301-3-ravi.bangoria@amd.com Signed-off-by: Arnaldo Carvalho de Melo

perf amd ibs: Add Load Latency bits in raw dump

2025-04-30T01:30:46+00:00

IBS OP PMU on Zen5 supports Load Latency filtering. Decode and dump Load Latency filtering related bits into perf script raw dump. Also add oneliner example in the perf-amd-ibs man page. Signed-off-by: Ravi Bangoria Cc: Ananth Narayan Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Joe Mario Cc: Kan Liang Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Sandipan Das Cc: Santosh Shukla Cc: Stephane Eranian Link: https://lore.kernel.org/r/20250429035938.1301-2-ravi.bangoria@amd.com Signed-off-by: Arnaldo Carvalho de Melo

x86/platform/amd: Move the header to

2025-04-14T07:31:47+00:00

Collect AMD specific platform header files in . Signed-off-by: Ingo Molnar Acked-by: Borislav Petkov (AMD) Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Mario Limonciello Link: https://lore.kernel.org/r/20250413084144.3746608-2-mingo@kernel.org

perf script ibs: Remove unused include

2023-08-23T11:41:52+00:00

Done to reduce dependencies on pmu-events.h. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Gaosheng Cui Cc: Ingo Molnar Cc: James Clark Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Rob Herring Link: https://lore.kernel.org/r/20230823080828.1460376-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo