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6e19839a80
Previously arch_support_sort_key and arch_perf_header_entry used a weak symbol to compile as appropriate for x86 and powerpc. A limitation to this is that the handling of a data file could vary in cross-platform development. Change to using the perf_env of the current session to determine the architecture kind and set the sort key and header entries as appropriate. Signed-off-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20250724163302.596743-23-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
94 lines
2.3 KiB
C
94 lines
2.3 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 <stdlib.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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#include "util/sample.h"
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#if defined(__x86_64__)
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struct perf_event__synthesize_extra_kmaps_cb_args {
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const struct perf_tool *tool;
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perf_event__handler_t process;
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struct machine *machine;
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union perf_event *event;
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};
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static int perf_event__synthesize_extra_kmaps_cb(struct map *map, void *data)
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{
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struct perf_event__synthesize_extra_kmaps_cb_args *args = data;
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union perf_event *event = args->event;
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struct kmap *kmap;
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size_t size;
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if (!__map__is_extra_kernel_map(map))
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return 0;
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kmap = map__kmap(map);
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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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args->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(args->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 = map__start(map);
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event->mmap.len = map__size(map);
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event->mmap.pgoff = map__pgoff(map);
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event->mmap.pid = args->machine->pid;
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strlcpy(event->mmap.filename, kmap->name, PATH_MAX);
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if (perf_tool__process_synth_event(args->tool, event, args->machine, args->process) != 0)
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return -1;
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return 0;
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}
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int perf_event__synthesize_extra_kmaps(const 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;
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struct maps *kmaps = machine__kernel_maps(machine);
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struct perf_event__synthesize_extra_kmaps_cb_args args = {
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.tool = tool,
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.process = process,
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.machine = machine,
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.event = zalloc(sizeof(args.event->mmap) + machine->id_hdr_size),
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};
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if (!args.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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rc = maps__for_each_map(kmaps, perf_event__synthesize_extra_kmaps_cb, &args);
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free(args.event);
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return rc;
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}
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#endif
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