From ef0580ecd8b0306acf09b7a7508d72cafc67896d Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 20 Oct 2020 15:57:21 -0300 Subject: perf env: Conditionally compile BPF support code on having HAVE_LIBBPF_SUPPORT If libbpf isn't selected, no need for a bunch of related code, that were not even being used, as code using these perf_env methods was also enclosed in HAVE_LIBBPF_SUPPORT. Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.c | 14 ++++++++++---- tools/perf/util/env.c | 15 ++++++++++++--- tools/perf/util/env.h | 4 ++-- tools/perf/util/header.c | 21 ++++++++------------- 4 files changed, 32 insertions(+), 22 deletions(-) (limited to 'tools/perf') diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 55c11e854fe4..89b5fd2b5de3 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -11,8 +11,10 @@ #include #include #include +#ifdef HAVE_LIBBPF_SUPPORT #include #include "bpf-event.h" +#endif #include "compress.h" #include "env.h" #include "namespaces.h" @@ -728,6 +730,7 @@ bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by) return false; } +#ifdef HAVE_LIBBPF_SUPPORT static ssize_t bpf_read(struct dso *dso, u64 offset, char *data) { struct bpf_prog_info_node *node; @@ -765,6 +768,7 @@ static int bpf_size(struct dso *dso) dso->data.file_size = node->info_linear->info.jited_prog_len; return 0; } +#endif // HAVE_LIBBPF_SUPPORT static void dso_cache__free(struct dso *dso) @@ -894,10 +898,12 @@ static struct dso_cache *dso_cache__populate(struct dso *dso, *ret = -ENOMEM; return NULL; } - +#ifdef HAVE_LIBBPF_SUPPORT if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) *ret = bpf_read(dso, cache_offset, cache->data); - else if (dso->binary_type == DSO_BINARY_TYPE__OOL) + else +#endif + if (dso->binary_type == DSO_BINARY_TYPE__OOL) *ret = DSO__DATA_CACHE_SIZE; else *ret = file_read(dso, machine, cache_offset, cache->data); @@ -1018,10 +1024,10 @@ int dso__data_file_size(struct dso *dso, struct machine *machine) if (dso->data.status == DSO_DATA_STATUS_ERROR) return -1; - +#ifdef HAVE_LIBBPF_SUPPORT if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) return bpf_size(dso); - +#endif return file_size(dso, machine); } diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c index fadc59708ece..9130f6fad8d5 100644 --- a/tools/perf/util/env.c +++ b/tools/perf/util/env.c @@ -5,16 +5,18 @@ #include "util/header.h" #include #include -#include "bpf-event.h" #include "cgroup.h" #include #include -#include #include #include struct perf_env perf_env; +#ifdef HAVE_LIBBPF_SUPPORT +#include "bpf-event.h" +#include + void perf_env__insert_bpf_prog_info(struct perf_env *env, struct bpf_prog_info_node *info_node) { @@ -163,6 +165,11 @@ static void perf_env__purge_bpf(struct perf_env *env) up_write(&env->bpf_progs.lock); } +#else // HAVE_LIBBPF_SUPPORT +static void perf_env__purge_bpf(struct perf_env *env __maybe_unused) +{ +} +#endif // HAVE_LIBBPF_SUPPORT void perf_env__exit(struct perf_env *env) { @@ -197,11 +204,13 @@ void perf_env__exit(struct perf_env *env) zfree(&env->memory_nodes); } -void perf_env__init(struct perf_env *env) +void perf_env__init(struct perf_env *env __maybe_unused) { +#ifdef HAVE_LIBBPF_SUPPORT env->bpf_progs.infos = RB_ROOT; env->bpf_progs.btfs = RB_ROOT; init_rwsem(&env->bpf_progs.lock); +#endif } int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]) diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h index a12972652006..ca249bf5e984 100644 --- a/tools/perf/util/env.h +++ b/tools/perf/util/env.h @@ -77,7 +77,7 @@ struct perf_env { struct numa_node *numa_nodes; struct memory_node *memory_nodes; unsigned long long memory_bsize; - +#ifdef HAVE_LIBBPF_SUPPORT /* * bpf_info_lock protects bpf rbtrees. This is needed because the * trees are accessed by different threads in perf-top @@ -89,7 +89,7 @@ struct perf_env { struct rb_root btfs; u32 btfs_cnt; } bpf_progs; - +#endif // HAVE_LIBBPF_SUPPORT /* same reason as above (for perf-top) */ struct { struct rw_semaphore lock; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index be850e9f8852..598285a21dad 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -19,7 +19,9 @@ #include #include #include +#ifdef HAVE_LIBBPF_SUPPORT #include +#endif #include #include "dso.h" @@ -987,13 +989,6 @@ out: up_read(&env->bpf_progs.lock); return ret; } -#else // HAVE_LIBBPF_SUPPORT -static int write_bpf_prog_info(struct feat_fd *ff __maybe_unused, - struct evlist *evlist __maybe_unused) -{ - return 0; -} -#endif // HAVE_LIBBPF_SUPPORT static int write_bpf_btf(struct feat_fd *ff, struct evlist *evlist __maybe_unused) @@ -1027,6 +1022,7 @@ out: up_read(&env->bpf_progs.lock); return ret; } +#endif // HAVE_LIBBPF_SUPPORT static int cpu_cache_level__sort(const void *a, const void *b) { @@ -1638,6 +1634,7 @@ static void print_dir_format(struct feat_fd *ff, FILE *fp) fprintf(fp, "# directory data version : %"PRIu64"\n", data->dir.version); } +#ifdef HAVE_LIBBPF_SUPPORT static void print_bpf_prog_info(struct feat_fd *ff, FILE *fp) { struct perf_env *env = &ff->ph->env; @@ -1683,6 +1680,7 @@ static void print_bpf_btf(struct feat_fd *ff, FILE *fp) up_read(&env->bpf_progs.lock); } +#endif // HAVE_LIBBPF_SUPPORT static void free_event_desc(struct evsel *events) { @@ -2938,12 +2936,6 @@ out: up_write(&env->bpf_progs.lock); return err; } -#else // HAVE_LIBBPF_SUPPORT -static int process_bpf_prog_info(struct feat_fd *ff __maybe_unused, void *data __maybe_unused) -{ - return 0; -} -#endif // HAVE_LIBBPF_SUPPORT static int process_bpf_btf(struct feat_fd *ff, void *data __maybe_unused) { @@ -2990,6 +2982,7 @@ out: free(node); return err; } +#endif // HAVE_LIBBPF_SUPPORT static int process_compressed(struct feat_fd *ff, void *data __maybe_unused) @@ -3120,8 +3113,10 @@ const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE] = { FEAT_OPR(MEM_TOPOLOGY, mem_topology, true), FEAT_OPR(CLOCKID, clockid, false), FEAT_OPN(DIR_FORMAT, dir_format, false), +#ifdef HAVE_LIBBPF_SUPPORT FEAT_OPR(BPF_PROG_INFO, bpf_prog_info, false), FEAT_OPR(BPF_BTF, bpf_btf, false), +#endif FEAT_OPR(COMPRESSED, compressed, false), FEAT_OPR(CPU_PMU_CAPS, cpu_pmu_caps, false), FEAT_OPR(CLOCK_DATA, clock_data, false), -- cgit v1.2.3-59-g8ed1b