diff options
Diffstat (limited to 'tools/perf/builtin-kmem.c')
| -rw-r--r-- | tools/perf/builtin-kmem.c | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index 1c668953c7ec..828b7284e547 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -28,6 +28,10 @@ static int kmem_slab; static int kmem_page; static long kmem_page_size; +static enum { + KMEM_SLAB, + KMEM_PAGE, +} kmem_default = KMEM_SLAB; /* for backward compatibility */ struct alloc_stat; typedef int (*sort_fn_t)(void *, void *); @@ -1710,7 +1714,8 @@ static int parse_sort_opt(const struct option *opt __maybe_unused, if (!arg) return -1; - if (kmem_page > kmem_slab) { + if (kmem_page > kmem_slab || + (kmem_page == 0 && kmem_slab == 0 && kmem_default == KMEM_PAGE)) { if (caller_flag > alloc_flag) return setup_page_sorting(&page_caller_sort, arg); else @@ -1826,6 +1831,22 @@ static int __cmd_record(int argc, const char **argv) return cmd_record(i, rec_argv, NULL); } +static int kmem_config(const char *var, const char *value, void *cb) +{ + if (!strcmp(var, "kmem.default")) { + if (!strcmp(value, "slab")) + kmem_default = KMEM_SLAB; + else if (!strcmp(value, "page")) + kmem_default = KMEM_PAGE; + else + pr_err("invalid default value ('slab' or 'page' required): %s\n", + value); + return 0; + } + + return perf_default_config(var, value, cb); +} + int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) { const char * const default_slab_sort = "frag,hit,bytes"; @@ -1862,14 +1883,19 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) struct perf_session *session; int ret = -1; + perf_config(kmem_config, NULL); argc = parse_options_subcommand(argc, argv, kmem_options, kmem_subcommands, kmem_usage, 0); if (!argc) usage_with_options(kmem_usage, kmem_options); - if (kmem_slab == 0 && kmem_page == 0) - kmem_slab = 1; /* for backward compatibility */ + if (kmem_slab == 0 && kmem_page == 0) { + if (kmem_default == KMEM_SLAB) + kmem_slab = 1; + else + kmem_page = 1; + } if (!strncmp(argv[0], "rec", 3)) { symbol__init(NULL); |