forked from luck/tmp_suning_uos_patched
441b62acd9
This is currently working due to extra include paths in the build. Committer testing: $ cd tools/include/uapi/asm/ Before this patch: $ ls -la ../../arch/x86/include/uapi/asm/errno.h ls: cannot access '../../arch/x86/include/uapi/asm/errno.h': No such file or directory $ After this patch; $ ls -la ../../../arch/x86/include/uapi/asm/errno.h -rw-rw-r--. 1 acme acme 31 Feb 20 12:42 ../../../arch/x86/include/uapi/asm/errno.h $ Check that that is still under tools/, i.e. hasn't escaped into the main kernel sources: $ cd ../../../arch/x86/include/uapi/asm/ $ pwd /home/acme/git/perf/tools/arch/x86/include/uapi/asm $ Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexios Zavras <alexios.zavras@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Igor Lubashev <ilubashe@akamai.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wei Li <liwei391@huawei.com> Link: http://lore.kernel.org/lkml/20200306071110.130202-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/zalloc.h>
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#include "../../../util/event.h"
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#include "../../../util/synthetic-events.h"
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#include "../../../util/machine.h"
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#include "../../../util/tool.h"
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#include "../../../util/map.h"
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#include "../../../util/debug.h"
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#if defined(__x86_64__)
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int perf_event__synthesize_extra_kmaps(struct perf_tool *tool,
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perf_event__handler_t process,
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struct machine *machine)
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{
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int rc = 0;
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struct map *pos;
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struct maps *kmaps = &machine->kmaps;
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union perf_event *event = zalloc(sizeof(event->mmap) +
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machine->id_hdr_size);
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if (!event) {
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pr_debug("Not enough memory synthesizing mmap event "
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"for extra kernel maps\n");
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return -1;
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}
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maps__for_each_entry(kmaps, pos) {
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struct kmap *kmap;
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size_t size;
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if (!__map__is_extra_kernel_map(pos))
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continue;
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kmap = map__kmap(pos);
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size = sizeof(event->mmap) - sizeof(event->mmap.filename) +
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PERF_ALIGN(strlen(kmap->name) + 1, sizeof(u64)) +
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machine->id_hdr_size;
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memset(event, 0, size);
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event->mmap.header.type = PERF_RECORD_MMAP;
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/*
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* kernel uses 0 for user space maps, see kernel/perf_event.c
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* __perf_event_mmap
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*/
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if (machine__is_host(machine))
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event->header.misc = PERF_RECORD_MISC_KERNEL;
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else
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event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
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event->mmap.header.size = size;
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event->mmap.start = pos->start;
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event->mmap.len = pos->end - pos->start;
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event->mmap.pgoff = pos->pgoff;
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event->mmap.pid = machine->pid;
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strlcpy(event->mmap.filename, kmap->name, PATH_MAX);
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if (perf_tool__process_synth_event(tool, event, machine,
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process) != 0) {
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rc = -1;
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break;
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}
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}
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free(event);
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return rc;
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}
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#endif
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