ce1e22b08f
Adding -e option for perf mem record command, to be able to specify memory event directly. Get list of available events: $ perf mem record -e list ldlat-loads ldlat-stores Monitor ldlat-loads: $ perf mem record -e ldlat-loads true Committer notes: Further testing: # perf mem record -e ldlat-loads true [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (10 samples) ] # perf evlist cpu/mem-loads,ldlat=30/P # Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1455525293-8671-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
52 lines
993 B
C
52 lines
993 B
C
#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "mem-events.h"
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#include "debug.h"
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#define E(t, n) { .tag = t, .name = n }
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struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
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E("ldlat-loads", "cpu/mem-loads,ldlat=30/P"),
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E("ldlat-stores", "cpu/mem-stores/P"),
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};
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#undef E
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int perf_mem_events__parse(const char *str)
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{
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char *tok, *saveptr = NULL;
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bool found = false;
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char *buf;
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int j;
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/* We need buffer that we know we can write to. */
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buf = malloc(strlen(str) + 1);
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if (!buf)
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return -ENOMEM;
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strcpy(buf, str);
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tok = strtok_r((char *)buf, ",", &saveptr);
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while (tok) {
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for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
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struct perf_mem_event *e = &perf_mem_events[j];
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if (strstr(e->tag, tok))
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e->record = found = true;
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}
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tok = strtok_r(NULL, ",", &saveptr);
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}
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free(buf);
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if (found)
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return 0;
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pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str);
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return -1;
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}
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