/* * builtin-buildid-list.c * * Builtin buildid-list command: list buildids in perf.data, in the running * kernel and in ELF files. * * Copyright (C) 2009, Red Hat Inc. * Copyright (C) 2009, Arnaldo Carvalho de Melo */ #include "builtin.h" #include "perf.h" #include "util/build-id.h" #include "util/cache.h" #include "util/debug.h" #include #include "util/session.h" #include "util/symbol.h" #include "util/data.h" static int sysfs__fprintf_build_id(FILE *fp) { char sbuild_id[SBUILD_ID_SIZE]; int ret; ret = sysfs__sprintf_build_id("/", sbuild_id); if (ret != sizeof(sbuild_id)) return ret < 0 ? ret : -EINVAL; return fprintf(fp, "%s\n", sbuild_id); } static int filename__fprintf_build_id(const char *name, FILE *fp) { char sbuild_id[SBUILD_ID_SIZE]; int ret; ret = filename__sprintf_build_id(name, sbuild_id); if (ret != sizeof(sbuild_id)) return ret < 0 ? ret : -EINVAL; return fprintf(fp, "%s\n", sbuild_id); } static bool dso__skip_buildid(struct dso *dso, int with_hits) { return with_hits && !dso->hit; } static int perf_session__list_build_ids(bool force, bool with_hits) { struct perf_session *session; struct perf_data_file file = { .path = input_name, .mode = PERF_DATA_MODE_READ, .force = force, }; symbol__elf_init(); /* * See if this is an ELF file first: */ if (filename__fprintf_build_id(input_name, stdout) > 0) goto out; session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops); if (session == NULL) return -1; /* * We take all buildids when the file contains AUX area tracing data * because we do not decode the trace because it would take too long. */ if (!perf_data_file__is_pipe(&file) && perf_header__has_feat(&session->header, HEADER_AUXTRACE)) with_hits = false; /* * in pipe-mode, the only way to get the buildids is to parse * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID */ if (with_hits || perf_data_file__is_pipe(&file)) perf_session__process_events(session); perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits); perf_session__delete(session); out: return 0; } int cmd_buildid_list(int argc, const char **argv, const char *prefix __maybe_unused) { bool show_kernel = false; bool with_hits = false; bool force = false; const struct option options[] = { OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"), OPT_STRING('i', "input", &input_name, "file", "input file name"), OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"), OPT_INCR('v', "verbose", &verbose, "be more verbose"), OPT_END() }; const char * const buildid_list_usage[] = { "perf buildid-list []", NULL }; argc = parse_options(argc, argv, options, buildid_list_usage, 0); setup_pager(); if (show_kernel) return !(sysfs__fprintf_build_id(stdout) > 0); return perf_session__list_build_ids(force, with_hits); } g/selftests/mqueue
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authorDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
committerDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
commit54791b276b4000b307339f269d3bf7db877d536f (patch)
tree1c2616bd373ce5ea28aac2a53e32f5b5834901ce /tools/testing/selftests/mqueue
parent5d0e7705774dd412a465896d08d59a81a345c1e4 (diff)
parent047487241ff59374fded8c477f21453681f5995c (diff)
Merge branch 'sparc64-non-resumable-user-error-recovery'
Liam R. Howlett says: ==================== sparc64: Recover from userspace non-resumable PIO & MEM errors A non-resumable error from userspace is able to cause a kernel panic or trap loop due to the setup and handling of the queued traps once in the kernel. This patch series addresses both of these issues. The queues are fixed by simply zeroing the memory before use. PIO errors from userspace will result in a SIGBUS being sent to the user process. The MEM errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/testing/selftests/mqueue')