kernel/linux.git/tools/perf/util, branch v6.1.164

perf tools: Fix split kallsyms DSO counting

2026-01-11T14:18:34+00:00

[ Upstream commit ad0b9c4865b98dc37f4d606d26b1c19808796805 ] It's counted twice as it's increased after calling maps__insert(). I guess we want to increase it only after it's added properly. Reviewed-by: Ian Rogers Fixes: 2e538c4a1847291cf ("perf tools: Improve kernel/modules symbol lookup") Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin

perf session: Fix handling when buffer exceeds 2 GiB

2025-10-19T14:23:06+00:00

[ Upstream commit c17dda8013495d8132c976cbf349be9949d0fbd1 ] If a user specifies an AUX buffer larger than 2 GiB, the returned size may exceed 0x80000000. Since the err variable is defined as a signed 32-bit integer, such a value overflows and becomes negative. As a result, the perf record command reports an error: 0x146e8 [0x30]: failed to process type: 71 [Unknown error 183711232] Change the type of the err variable to a signed 64-bit integer to accommodate large buffer sizes correctly. Fixes: d5652d865ea734a1 ("perf session: Add ability to skip 4GiB or more") Reported-by: Tamas Zsoldos Signed-off-by: Leo Yan Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Link: https://lore.kernel.org/r/20250808-perf_fix_big_buffer_size-v1-1-45f45444a9a4@arm.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf arm_spe: Correct memory level for remote access

2025-10-19T14:23:06+00:00

[ Upstream commit cb300e3515057fb555983ce47e8acc86a5c69c3c ] For remote accesses, the data source packet does not contain information about the memory level. To avoid misinformation, set the memory level to NA (Not Available). Fixes: 4e6430cbb1a9f1dc ("perf arm-spe: Use SPE data source for neoverse cores") Reviewed-by: James Clark Signed-off-by: Leo Yan Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ali Saidi Cc: German Gomez Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Will Deacon Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf arm-spe: Rename the common data source encoding

2025-10-19T14:23:06+00:00

[ Upstream commit 50b8f1d5bf4ad7f09ef8012ccf5f94f741df827b ] The Neoverse CPUs follow the common data source encoding, and other CPU variants can share the same format. Rename the CPU list and data source definitions as common data source names. This change prepares for appending more CPU variants. Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-3-leo.yan@arm.com Signed-off-by: Namhyung Kim Stable-dep-of: cb300e351505 ("perf arm_spe: Correct memory level for remote access") Signed-off-by: Sasha Levin

perf arm-spe: Refactor arm-spe to support operation packet type

2025-10-19T14:23:06+00:00

[ Upstream commit 0066015a3d8f9c01a17eb04579edba7dac9510af ] Extend the decoder of Arm SPE records to support more fields from the operation packet type. Not all fields are being decoded by this commit. Only those needed to support the use-case SVE load/store/other operations. Suggested-by: Leo Yan Signed-off-by: German Gomez Acked-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Anshuman.Khandual@arm.com Cc: Ingo Molnar Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230320151509.1137462-2-james.clark@arm.com Signed-off-by: James Clark Signed-off-by: Arnaldo Carvalho de Melo Stable-dep-of: cb300e351505 ("perf arm_spe: Correct memory level for remote access") Signed-off-by: Sasha Levin

perf arm_spe: Correct setting remote access

2025-10-19T14:23:06+00:00

[ Upstream commit 039fd0634a0629132432632d7ac9a14915406b5c ] Set the mem_remote field for a remote access to appropriately represent the event. Fixes: a89dbc9b988f3ba8 ("perf arm-spe: Set sample's data source field") Reviewed-by: James Clark Signed-off-by: Leo Yan Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ali Saidi Cc: German Gomez Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Will Deacon Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf util: Fix compression checks returning -1 as bool

2025-10-19T14:23:06+00:00

[ Upstream commit 43fa1141e2c1af79c91aaa4df03e436c415a6fc3 ] The lzma_is_compressed and gzip_is_compressed functions are declared to return a "bool" type, but in case of an error (e.g., file open failure), they incorrectly returned -1. A bool type is a boolean value that is either true or false. Returning -1 for a bool return type can lead to unexpected behavior and may violate strict type-checking in some compilers. Fix the return value to be false in error cases, ensuring the function adheres to its declared return type improves for preventing potential bugs related to type mismatch. Fixes: 4b57fd44b61beb51 ("perf tools: Add lzma_is_compressed function") Reviewed-by: Ian Rogers Signed-off-by: Yunseong Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Cc: Stephen Brennan Link: https://lore.kernel.org/r/20250822162506.316844-3-ysk@kzalloc.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf evsel: Avoid container_of on a NULL leader

2025-10-19T14:23:05+00:00

[ Upstream commit 2354479026d726954ff86ce82f4b649637319661 ] An evsel should typically have a leader of itself, however, in tests like 'Sample parsing' a NULL leader may occur and the container_of will return a corrupt pointer. Avoid this with an explicit NULL test. Fixes: fba7c86601e2e42d ("libperf: Move 'leader' from tools/perf to perf_evsel::leader") Reviewed-by: James Clark Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Athira Rajeev Cc: Blake Jones Cc: Chun-Tse Shao Cc: Collin Funk Cc: Howard Chu Cc: Ingo Molnar Cc: Jan Polensky Cc: Jiri Olsa Cc: Kan Liang Cc: Li Huafei Cc: Mark Rutland Cc: Nam Cao Cc: Peter Zijlstra Cc: Steinar H. Gunderson Cc: Thomas Gleixner Link: https://lore.kernel.org/r/20250821163820.1132977-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf sched: Fix memory leaks for evsel->priv in timehist

2025-08-15T10:05:02+00:00

[ Upstream commit 117e5c33b1c44037af016d77ce6c0b086d55535f ] It uses evsel->priv to save per-cpu timing information. It should be freed when the evsel is released. Add the priv destructor for evsel same as thread to handle that. Fixes: 49394a2a24c78ce0 ("perf sched timehist: Introduce timehist command") Reviewed-by: Ian Rogers Tested-by: Ian Rogers Link: https://lore.kernel.org/r/20250703014942.1369397-6-namhyung@kernel.org Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin

perf intel-pt: Fix PEBS-via-PT data_src

2025-06-27T10:07:15+00:00

[ Upstream commit e00eac6b5b6d956f38d8880c44bf7fd9954063c3 ] The Fixes commit did not add support for decoding PEBS-via-PT data_src. Fix by adding support. PEBS-via-PT is a feature of some E-core processors, starting with processors based on Tremont microarchitecture. Because the kernel only supports Intel PT features that are on all processors, there is no support for PEBS-via-PT on hybrids. Currently that leaves processors based on Tremont, Gracemont and Crestmont, however there are no events on Tremont that produce data_src information, and for Gracemont and Crestmont there are only: mem-loads event=0xd0,umask=0x5,ldlat=3 mem-stores event=0xd0,umask=0x6 Affected processors include Alder Lake N (Gracemont), Sierra Forest (Crestmont) and Grand Ridge (Crestmont). Example: # perf record -d -e intel_pt/branch=0/ -e mem-loads/aux-output/pp uname Before: # perf.before script --itrace=o -Fdata_src 0 |OP No|LVL N/A|SNP N/A|TLB N/A|LCK No|BLK N/A 0 |OP No|LVL N/A|SNP N/A|TLB N/A|LCK No|BLK N/A After: # perf script --itrace=o -Fdata_src 10268100142 |OP LOAD|LVL L1 hit|SNP None|TLB L1 or L2 hit|LCK No|BLK N/A 10450100442 |OP LOAD|LVL L2 hit|SNP None|TLB L2 miss|LCK No|BLK N/A Fixes: 975846eddf907297 ("perf intel-pt: Add memory information to synthesized PEBS sample") Reviewed-by: Kan Liang Signed-off-by: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20250512093932.79854-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin