mirror of https://gitee.com/openkylin/linux.git
perf machine: Carve up event processing specific from perf_tool
The perf_tool vtable expects methods that receive perf_tool and perf_sample entries, but for tools not interested in doing any special processing on non PERF_RECORD_SAMPLE events, like 'perf top', and for those not using perf_session, like 'perf trace', they were using perf_event__process passing tool and sample paramenters that were just not used. Provide 'machine' methods for this purpose and make the perf_event ones use them. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ot9cc6mt025o8kbngzckcrx9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
parent
0439539f72
commit
b0a7d1a0cd
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@ -26,6 +26,7 @@
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#include "util/color.h"
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#include "util/evlist.h"
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#include "util/evsel.h"
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#include "util/machine.h"
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#include "util/session.h"
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#include "util/symbol.h"
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#include "util/thread.h"
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@ -871,7 +872,7 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
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&sample, machine);
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} else if (event->header.type < PERF_RECORD_MAX) {
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hists__inc_nr_events(&evsel->hists, event->header.type);
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perf_event__process(&top->tool, event, &sample, machine);
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machine__process_event(machine, event);
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} else
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++session->hists.stats.nr_unknown_events;
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}
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@ -520,134 +520,15 @@ int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine)
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{
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struct thread *thread = machine__findnew_thread(machine, event->comm.tid);
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if (dump_trace)
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perf_event__fprintf_comm(event, stdout);
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if (thread == NULL || thread__set_comm(thread, event->comm.comm)) {
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dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
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return -1;
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}
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return 0;
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return machine__process_comm_event(machine, event);
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}
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int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
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event->lost.id, event->lost.lost);
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return 0;
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}
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static void perf_event__set_kernel_mmap_len(union perf_event *event,
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struct map **maps)
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{
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maps[MAP__FUNCTION]->start = event->mmap.start;
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maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len;
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/*
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* Be a bit paranoid here, some perf.data file came with
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* a zero sized synthesized MMAP event for the kernel.
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*/
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if (maps[MAP__FUNCTION]->end == 0)
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maps[MAP__FUNCTION]->end = ~0ULL;
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}
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static int perf_event__process_kernel_mmap(struct perf_tool *tool
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__maybe_unused,
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union perf_event *event,
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struct machine *machine)
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{
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struct map *map;
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char kmmap_prefix[PATH_MAX];
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enum dso_kernel_type kernel_type;
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bool is_kernel_mmap;
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machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
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if (machine__is_host(machine))
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kernel_type = DSO_TYPE_KERNEL;
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else
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kernel_type = DSO_TYPE_GUEST_KERNEL;
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is_kernel_mmap = memcmp(event->mmap.filename,
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kmmap_prefix,
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strlen(kmmap_prefix) - 1) == 0;
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if (event->mmap.filename[0] == '/' ||
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(!is_kernel_mmap && event->mmap.filename[0] == '[')) {
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char short_module_name[1024];
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char *name, *dot;
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if (event->mmap.filename[0] == '/') {
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name = strrchr(event->mmap.filename, '/');
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if (name == NULL)
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goto out_problem;
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++name; /* skip / */
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dot = strrchr(name, '.');
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if (dot == NULL)
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goto out_problem;
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snprintf(short_module_name, sizeof(short_module_name),
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"[%.*s]", (int)(dot - name), name);
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strxfrchar(short_module_name, '-', '_');
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} else
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strcpy(short_module_name, event->mmap.filename);
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map = machine__new_module(machine, event->mmap.start,
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event->mmap.filename);
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if (map == NULL)
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goto out_problem;
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name = strdup(short_module_name);
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if (name == NULL)
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goto out_problem;
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map->dso->short_name = name;
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map->dso->sname_alloc = 1;
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map->end = map->start + event->mmap.len;
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} else if (is_kernel_mmap) {
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const char *symbol_name = (event->mmap.filename +
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strlen(kmmap_prefix));
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/*
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* Should be there already, from the build-id table in
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* the header.
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*/
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struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
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kmmap_prefix);
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if (kernel == NULL)
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goto out_problem;
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kernel->kernel = kernel_type;
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if (__machine__create_kernel_maps(machine, kernel) < 0)
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goto out_problem;
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perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps);
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/*
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* Avoid using a zero address (kptr_restrict) for the ref reloc
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* symbol. Effectively having zero here means that at record
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* time /proc/sys/kernel/kptr_restrict was non zero.
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*/
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if (event->mmap.pgoff != 0) {
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maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
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symbol_name,
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event->mmap.pgoff);
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}
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if (machine__is_default_guest(machine)) {
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/*
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* preload dso of guest kernel and modules
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*/
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dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
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NULL);
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}
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}
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return 0;
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out_problem:
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return -1;
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return machine__process_lost_event(machine, event);
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}
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size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
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@ -657,43 +538,12 @@ size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
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event->mmap.len, event->mmap.pgoff, event->mmap.filename);
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}
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int perf_event__process_mmap(struct perf_tool *tool,
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int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine)
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{
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struct thread *thread;
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struct map *map;
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u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
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int ret = 0;
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if (dump_trace)
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perf_event__fprintf_mmap(event, stdout);
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if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
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cpumode == PERF_RECORD_MISC_KERNEL) {
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ret = perf_event__process_kernel_mmap(tool, event, machine);
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if (ret < 0)
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goto out_problem;
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return 0;
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}
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thread = machine__findnew_thread(machine, event->mmap.pid);
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if (thread == NULL)
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goto out_problem;
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map = map__new(&machine->user_dsos, event->mmap.start,
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event->mmap.len, event->mmap.pgoff,
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event->mmap.pid, event->mmap.filename,
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MAP__FUNCTION);
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if (map == NULL)
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goto out_problem;
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thread__insert_map(thread, map);
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return 0;
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out_problem:
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dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
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return 0;
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return machine__process_mmap_event(machine, event);
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}
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size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
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@ -708,19 +558,7 @@ int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine)
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{
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struct thread *thread = machine__findnew_thread(machine, event->fork.tid);
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struct thread *parent = machine__findnew_thread(machine, event->fork.ptid);
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if (dump_trace)
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perf_event__fprintf_task(event, stdout);
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if (thread == NULL || parent == NULL ||
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thread__fork(thread, parent) < 0) {
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dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
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return -1;
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}
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return 0;
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return machine__process_fork_event(machine, event);
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}
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int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
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@ -728,15 +566,7 @@ int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine)
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{
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struct thread *thread = machine__find_thread(machine, event->fork.tid);
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if (dump_trace)
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perf_event__fprintf_task(event, stdout);
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if (thread != NULL)
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machine__remove_thread(machine, thread);
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return 0;
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return machine__process_exit_event(machine, event);
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}
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size_t perf_event__fprintf(union perf_event *event, FILE *fp)
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@ -762,29 +592,12 @@ size_t perf_event__fprintf(union perf_event *event, FILE *fp)
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return ret;
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}
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int perf_event__process(struct perf_tool *tool, union perf_event *event,
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struct perf_sample *sample, struct machine *machine)
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int perf_event__process(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine)
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{
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switch (event->header.type) {
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case PERF_RECORD_COMM:
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perf_event__process_comm(tool, event, sample, machine);
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break;
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case PERF_RECORD_MMAP:
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perf_event__process_mmap(tool, event, sample, machine);
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break;
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case PERF_RECORD_FORK:
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perf_event__process_fork(tool, event, sample, machine);
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break;
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case PERF_RECORD_EXIT:
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perf_event__process_exit(tool, event, sample, machine);
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break;
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case PERF_RECORD_LOST:
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perf_event__process_lost(tool, event, sample, machine);
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default:
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break;
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}
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return 0;
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return machine__process_event(machine, event);
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}
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void thread__find_addr_map(struct thread *self,
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@ -1,3 +1,5 @@
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#include "debug.h"
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#include "event.h"
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#include "machine.h"
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#include "map.h"
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#include "thread.h"
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@ -55,3 +57,221 @@ struct thread *machine__find_thread(struct machine *machine, pid_t pid)
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{
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return __machine__findnew_thread(machine, pid, false);
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}
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int machine__process_comm_event(struct machine *machine, union perf_event *event)
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{
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struct thread *thread = machine__findnew_thread(machine, event->comm.tid);
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if (dump_trace)
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perf_event__fprintf_comm(event, stdout);
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if (thread == NULL || thread__set_comm(thread, event->comm.comm)) {
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dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
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return -1;
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}
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return 0;
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}
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int machine__process_lost_event(struct machine *machine __maybe_unused,
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union perf_event *event)
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{
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dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
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event->lost.id, event->lost.lost);
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return 0;
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}
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static void machine__set_kernel_mmap_len(struct machine *machine,
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union perf_event *event)
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{
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machine->vmlinux_maps[MAP__FUNCTION]->start = event->mmap.start;
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machine->vmlinux_maps[MAP__FUNCTION]->end = (event->mmap.start +
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event->mmap.len);
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/*
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* Be a bit paranoid here, some perf.data file came with
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* a zero sized synthesized MMAP event for the kernel.
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*/
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if (machine->vmlinux_maps[MAP__FUNCTION]->end == 0)
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machine->vmlinux_maps[MAP__FUNCTION]->end = ~0ULL;
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}
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static int machine__process_kernel_mmap_event(struct machine *machine,
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union perf_event *event)
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{
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struct map *map;
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char kmmap_prefix[PATH_MAX];
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enum dso_kernel_type kernel_type;
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bool is_kernel_mmap;
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machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
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if (machine__is_host(machine))
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kernel_type = DSO_TYPE_KERNEL;
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else
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kernel_type = DSO_TYPE_GUEST_KERNEL;
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is_kernel_mmap = memcmp(event->mmap.filename,
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kmmap_prefix,
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strlen(kmmap_prefix) - 1) == 0;
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if (event->mmap.filename[0] == '/' ||
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(!is_kernel_mmap && event->mmap.filename[0] == '[')) {
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char short_module_name[1024];
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char *name, *dot;
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if (event->mmap.filename[0] == '/') {
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name = strrchr(event->mmap.filename, '/');
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if (name == NULL)
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goto out_problem;
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++name; /* skip / */
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dot = strrchr(name, '.');
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if (dot == NULL)
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goto out_problem;
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snprintf(short_module_name, sizeof(short_module_name),
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"[%.*s]", (int)(dot - name), name);
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strxfrchar(short_module_name, '-', '_');
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} else
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strcpy(short_module_name, event->mmap.filename);
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map = machine__new_module(machine, event->mmap.start,
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event->mmap.filename);
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if (map == NULL)
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goto out_problem;
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name = strdup(short_module_name);
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if (name == NULL)
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goto out_problem;
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map->dso->short_name = name;
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map->dso->sname_alloc = 1;
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map->end = map->start + event->mmap.len;
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} else if (is_kernel_mmap) {
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const char *symbol_name = (event->mmap.filename +
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strlen(kmmap_prefix));
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/*
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* Should be there already, from the build-id table in
|
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* the header.
|
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*/
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struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
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kmmap_prefix);
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if (kernel == NULL)
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goto out_problem;
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kernel->kernel = kernel_type;
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if (__machine__create_kernel_maps(machine, kernel) < 0)
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goto out_problem;
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machine__set_kernel_mmap_len(machine, event);
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/*
|
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* Avoid using a zero address (kptr_restrict) for the ref reloc
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* symbol. Effectively having zero here means that at record
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* time /proc/sys/kernel/kptr_restrict was non zero.
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*/
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if (event->mmap.pgoff != 0) {
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maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
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symbol_name,
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event->mmap.pgoff);
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}
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if (machine__is_default_guest(machine)) {
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/*
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* preload dso of guest kernel and modules
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*/
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dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
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NULL);
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}
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}
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return 0;
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out_problem:
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return -1;
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}
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int machine__process_mmap_event(struct machine *machine, union perf_event *event)
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{
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u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
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struct thread *thread;
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struct map *map;
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int ret = 0;
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if (dump_trace)
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perf_event__fprintf_mmap(event, stdout);
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if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
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cpumode == PERF_RECORD_MISC_KERNEL) {
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ret = machine__process_kernel_mmap_event(machine, event);
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if (ret < 0)
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goto out_problem;
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return 0;
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}
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thread = machine__findnew_thread(machine, event->mmap.pid);
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if (thread == NULL)
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goto out_problem;
|
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map = map__new(&machine->user_dsos, event->mmap.start,
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event->mmap.len, event->mmap.pgoff,
|
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event->mmap.pid, event->mmap.filename,
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MAP__FUNCTION);
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if (map == NULL)
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goto out_problem;
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|
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thread__insert_map(thread, map);
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return 0;
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|
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out_problem:
|
||||
dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
int machine__process_fork_event(struct machine *machine, union perf_event *event)
|
||||
{
|
||||
struct thread *thread = machine__findnew_thread(machine, event->fork.tid);
|
||||
struct thread *parent = machine__findnew_thread(machine, event->fork.ptid);
|
||||
|
||||
if (dump_trace)
|
||||
perf_event__fprintf_task(event, stdout);
|
||||
|
||||
if (thread == NULL || parent == NULL ||
|
||||
thread__fork(thread, parent) < 0) {
|
||||
dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int machine__process_exit_event(struct machine *machine, union perf_event *event)
|
||||
{
|
||||
struct thread *thread = machine__find_thread(machine, event->fork.tid);
|
||||
|
||||
if (dump_trace)
|
||||
perf_event__fprintf_task(event, stdout);
|
||||
|
||||
if (thread != NULL)
|
||||
machine__remove_thread(machine, thread);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int machine__process_event(struct machine *machine, union perf_event *event)
|
||||
{
|
||||
int ret;
|
||||
|
||||
switch (event->header.type) {
|
||||
case PERF_RECORD_COMM:
|
||||
ret = machine__process_comm_event(machine, event); break;
|
||||
case PERF_RECORD_MMAP:
|
||||
ret = machine__process_mmap_event(machine, event); break;
|
||||
case PERF_RECORD_FORK:
|
||||
ret = machine__process_fork_event(machine, event); break;
|
||||
case PERF_RECORD_EXIT:
|
||||
ret = machine__process_exit_event(machine, event); break;
|
||||
case PERF_RECORD_LOST:
|
||||
ret = machine__process_lost_event(machine, event); break;
|
||||
default:
|
||||
ret = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -5,7 +5,15 @@
|
|||
|
||||
struct thread;
|
||||
struct machine;
|
||||
union perf_event;
|
||||
|
||||
struct thread *machine__find_thread(struct machine *machine, pid_t pid);
|
||||
|
||||
int machine__process_comm_event(struct machine *machine, union perf_event *event);
|
||||
int machine__process_exit_event(struct machine *machine, union perf_event *event);
|
||||
int machine__process_fork_event(struct machine *machine, union perf_event *event);
|
||||
int machine__process_lost_event(struct machine *machine, union perf_event *event);
|
||||
int machine__process_mmap_event(struct machine *machine, union perf_event *event);
|
||||
int machine__process_event(struct machine *machine, union perf_event *event);
|
||||
|
||||
#endif /* __PERF_MACHINE_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue