kernel/linux.git/tools/perf/util/dso.h, branch v5.18

perf tools: Set build-id using build-id header on new mmap records

2022-03-12T14:01:12+00:00

MMAP records that occur after the build-id header is parsed do not have their build-id set even if the filename matches an entry from the header. Set the build-id on these dsos as long as the MMAP record doesn't have its own build-id set. This fixes an issue with off target analysis where the local version of a dso is loaded rather than one from ~/.debug via a build-id. Reported-by: Denis Nikitin Signed-off-by: James Clark Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: coresight@lists.linaro.org Link: https://lore.kernel.org/r/20220304090956.2048712-2-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf dso: Fix /proc/kcore access on 32 bit systems

2021-10-25T16:47:42+00:00

Because _LARGEFILE64_SOURCE is set in perf, file offset sizes can be 64 bits. If a workflow needs to open /proc/kcore on a 32 bit system (for example to decode Arm ETM kernel trace) then the size value will be wrapped to 32 bits in the function file_size() at this line: dso->data.file_size = st.st_size; Setting the file_size member to be u64 fixes the issue and allows /proc/kcore to be opened. Reported-by: Denis Nikitin Signed-off-by: James Clark Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Link: http://lore.kernel.org/lkml/20211021112700.112499-1-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add flag for tracking warnings of missing DSOs

2021-08-03T20:04:08+00:00

Auxtrace support may need DSOs for decoding (for example Arm Coresight). If one of these is missing it would make sense to warn once for each one that's missing, but not flood the output with every address as there could be thousands of lookups. This flag will allow tracking whether a warning was shown for each DSO. Signed-off-by: James Clark Reviewed-by: Leo Yan Cc: Alexander Shishkin Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Suzuki Poulouse Cc: Will Deacon Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20210729155805.2830-5-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix various typos in comments

2021-03-23T20:13:43+00:00

Fix ~124 single-word typos and a few spelling errors in the perf tooling code, accumulated over the years. Signed-off-by: Ingo Molnar Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210321113734.GA248990@gmail.com Link: http://lore.kernel.org/lkml/20210323160915.GA61903@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add filename__decompress function

2020-11-27T11:36:53+00:00

Factor filename__decompress from decompress_kmodule function. It can decompress files with compressions supported in perf - xz and gz, the support needs to be compiled in. It will to be used in following changes to get build id out of compressed elf objects. Signed-off-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Ian Rogers Cc: Mark Rutland Cc: Michael Petlan Cc: Peter Zijlstra Cc: Song Liu Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20201126170026.2619053-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Align buildid list output for short build ids

2020-10-14T14:28:52+00:00

With shorter md5 build ids we need to align their paths properly with other build ids: $ perf buildid-list 17f4e448cc746582ea1881528deb549f7fdb3fd5 [kernel.kallsyms] a50e350e97c43b4708d09bcd85ebfff7 .../tools/perf/buildid-ex-md5 1805c738c8f3ec0f47b7ea09080c28f34d18a82b /usr/lib64/ld-2.31.so $ Signed-off-by: Jiri Olsa Acked-by: Ian Rogers Link: https://lore.kernel.org/r/20201013192441.1299447-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Pass build_id object to dso__build_id_equal()

2020-10-14T12:25:36+00:00

Passing build_id object to dso__build_id_equal(), so we can properly check build id with different size than sha1. Signed-off-by: Jiri Olsa Acked-by: Ian Rogers Link: https://lore.kernel.org/r/20201013192441.1299447-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Pass build_id object to dso__set_build_id()

2020-10-14T11:46:42+00:00

Passing build_id object to dso__set_build_id(), so it's easier to initialize dos's build id object. Signed-off-by: Jiri Olsa Acked-by: Ian Rogers Link: https://lore.kernel.org/r/20201013192441.1299447-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Use build_id object in dso

2020-10-14T11:44:47+00:00

Replace build_id byte array with struct build_id object and all the code that references it. The objective is to carry size together with build id array, so it's better to keep both together. This is preparatory change for following patches, and there's no functional change. Signed-off-by: Jiri Olsa Acked-by: Ian Rogers Link: https://lore.kernel.org/r/20201013192441.1299447-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Rename 'enum dso_kernel_type' to 'enum dso_space_type'

2020-08-13T12:53:21+00:00

Rename enum dso_kernel_type to enum dso_space_type, which seems like better fit. Committer notes: This is used with 'struct dso'->kernel, which once was a boolean, so DSO_SPACE__USER is zero, !zero means some sort of kernel space, be it the host kernel space or a guest kernel space. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo