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Message-Id: <1348119407-12528-3-git-send-email-namhyung@kernel.org>
Date: Thu, 20 Sep 2012 14:36:45 +0900
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Paul Mackerras <paulus@...ba.org>,
Ingo Molnar <mingo@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
Stephane Eranian <eranian@...gle.com>,
David Ahern <dsahern@...il.com>,
Robert Richter <robert.richter@....com>
Subject: [PATCH 2/4] perf header: Add ->process callbacks to most of features
>From now on each feature information is processed and saved in perf
header so that it can be used wherever needed. The BRANCH_STACK
feature is an exception since it needs nothing to be done.
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Robert Richter <robert.richter@....com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
tools/perf/util/header.c | 318 +++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 307 insertions(+), 11 deletions(-)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index acbf6336199e..fd29d42dedbe 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -22,6 +22,7 @@
#include "cpumap.h"
#include "pmu.h"
#include "vdso.h"
+#include "strbuf.h"
static bool no_buildid_cache = false;
@@ -1673,6 +1674,99 @@ static int process_build_id(struct perf_file_section *section,
return 0;
}
+static int process_hostname(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ ph->info.hostname = do_read_string(fd, ph);
+ return ph->info.hostname ? 0 : -ENOMEM;
+}
+
+static int process_osrelease(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ ph->info.os_release = do_read_string(fd, ph);
+ return ph->info.os_release ? 0 : -ENOMEM;
+}
+
+static int process_version(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ ph->info.version = do_read_string(fd, ph);
+ return ph->info.version ? 0 : -ENOMEM;
+}
+
+static int process_arch(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ ph->info.arch = do_read_string(fd, ph);
+ return ph->info.arch ? 0 : -ENOMEM;
+}
+
+static int process_nrcpus(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ size_t ret;
+ u32 nr;
+
+ ret = read(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ return -1;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ ph->info.nr_cpus_online = nr;
+
+ ret = read(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ return -1;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ ph->info.nr_cpus_avail = nr;
+ return 0;
+}
+
+static int process_cpudesc(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ ph->info.cpu_desc = do_read_string(fd, ph);
+ return ph->info.cpu_desc ? 0 : -ENOMEM;
+}
+
+static int process_cpuid(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ ph->info.cpuid = do_read_string(fd, ph);
+ return ph->info.cpuid ? 0 : -ENOMEM;
+}
+
+static int process_total_mem(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ uint64_t mem;
+ size_t ret;
+
+ ret = read(fd, &mem, sizeof(mem));
+ if (ret != sizeof(mem))
+ return -1;
+
+ if (ph->needs_swap)
+ mem = bswap_64(mem);
+
+ ph->info.total_mem = mem;
+ return 0;
+}
+
static struct perf_evsel *
perf_evlist__find_by_index(struct perf_evlist *evlist, int idx)
{
@@ -1723,6 +1817,208 @@ process_event_desc(struct perf_file_section *section __maybe_unused,
return 0;
}
+static int process_cmdline(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ size_t ret;
+ char *str;
+ u32 nr, i;
+ struct strbuf sb;
+
+ ret = read(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ return -1;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ ph->info.nr_cmdline = nr;
+ strbuf_init(&sb, 128);
+
+ for (i = 0; i < nr; i++) {
+ str = do_read_string(fd, ph);
+ if (!str)
+ goto error;
+
+ /* include a NULL character at the end */
+ strbuf_add(&sb, str, strlen(str) + 1);
+ free(str);
+ }
+ ph->info.cmdline = strbuf_detach(&sb, NULL);
+ return 0;
+
+error:
+ strbuf_release(&sb);
+ return -1;
+}
+
+static int process_cpu_topology(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ size_t ret;
+ u32 nr, i;
+ char *str;
+ struct strbuf sb;
+
+ ret = read(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ return -1;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ ph->info.nr_sibling_cores = nr;
+ strbuf_init(&sb, 128);
+
+ for (i = 0; i < nr; i++) {
+ str = do_read_string(fd, ph);
+ if (!str)
+ goto error;
+
+ /* include a NULL character at the end */
+ strbuf_add(&sb, str, strlen(str) + 1);
+ free(str);
+ }
+ ph->info.sibling_cores = strbuf_detach(&sb, NULL);
+
+ ret = read(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ return -1;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ ph->info.nr_sibling_threads = nr;
+
+ for (i = 0; i < nr; i++) {
+ str = do_read_string(fd, ph);
+ if (!str)
+ goto error;
+
+ /* include a NULL character at the end */
+ strbuf_add(&sb, str, strlen(str) + 1);
+ free(str);
+ }
+ ph->info.sibling_threads = strbuf_detach(&sb, NULL);
+ return 0;
+
+error:
+ strbuf_release(&sb);
+ return -1;
+}
+
+static int process_numa_topology(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ size_t ret;
+ u32 nr, node, i;
+ char *str;
+ uint64_t mem_total, mem_free;
+ struct strbuf sb;
+
+ /* nr nodes */
+ ret = read(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ goto error;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ ph->info.nr_numa_nodes = nr;
+ strbuf_init(&sb, 256);
+
+ for (i = 0; i < nr; i++) {
+ /* node number */
+ ret = read(fd, &node, sizeof(node));
+ if (ret != sizeof(node))
+ goto error;
+
+ ret = read(fd, &mem_total, sizeof(u64));
+ if (ret != sizeof(u64))
+ goto error;
+
+ ret = read(fd, &mem_free, sizeof(u64));
+ if (ret != sizeof(u64))
+ goto error;
+
+ if (ph->needs_swap) {
+ node = bswap_32(node);
+ mem_total = bswap_64(mem_total);
+ mem_free = bswap_64(mem_free);
+ }
+
+ strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":",
+ node, mem_total, mem_free);
+
+ str = do_read_string(fd, ph);
+ if (!str)
+ goto error;
+
+ /* include a NULL character at the end */
+ strbuf_add(&sb, str, strlen(str) + 1);
+ free(str);
+ }
+ ph->info.numa_nodes = strbuf_detach(&sb, NULL);
+ return 0;
+
+error:
+ strbuf_release(&sb);
+ return -1;
+}
+
+static int process_pmu_mappings(struct perf_file_section *section __unused,
+ struct perf_header *ph,
+ int feat __unused, int fd, void *data __used)
+{
+ size_t ret;
+ char *name;
+ u32 pmu_num;
+ u32 type;
+ struct strbuf sb;
+
+ ret = read(fd, &pmu_num, sizeof(pmu_num));
+ if (ret != sizeof(pmu_num))
+ return -1;
+
+ if (ph->needs_swap)
+ pmu_num = bswap_32(pmu_num);
+
+ if (!pmu_num) {
+ pr_debug("pmu mappings not available\n");
+ return 0;
+ }
+
+ ph->info.nr_pmu_mappings = pmu_num;
+ strbuf_init(&sb, 128);
+
+ while (pmu_num) {
+ if (read(fd, &type, sizeof(type)) != sizeof(type))
+ goto error;
+ if (ph->needs_swap)
+ type = bswap_32(type);
+
+ name = do_read_string(fd, ph);
+ if (!name)
+ goto error;
+
+ strbuf_addf(&sb, "%u:%s", type, name);
+ /* include a NULL character at the end */
+ strbuf_add(&sb, "", 1);
+
+ free(name);
+ pmu_num--;
+ }
+ ph->info.pmu_mappings = strbuf_detach(&sb, NULL);
+ return 0;
+
+error:
+ strbuf_release(&sb);
+ return -1;
+}
+
struct feature_ops {
int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist);
void (*print)(struct perf_header *h, int fd, FILE *fp);
@@ -1739,7 +2035,7 @@ struct feature_ops {
.process = process_##func }
#define FEAT_OPF(n, func) \
[n] = { .name = #n, .write = write_##func, .print = print_##func, \
- .full_only = true }
+ .process = process_##func, .full_only = true }
/* feature_ops not implemented: */
#define print_tracing_data NULL
@@ -1748,20 +2044,20 @@ struct feature_ops {
static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
FEAT_OPP(HEADER_TRACING_DATA, tracing_data),
FEAT_OPP(HEADER_BUILD_ID, build_id),
- FEAT_OPA(HEADER_HOSTNAME, hostname),
- FEAT_OPA(HEADER_OSRELEASE, osrelease),
- FEAT_OPA(HEADER_VERSION, version),
- FEAT_OPA(HEADER_ARCH, arch),
- FEAT_OPA(HEADER_NRCPUS, nrcpus),
- FEAT_OPA(HEADER_CPUDESC, cpudesc),
- FEAT_OPA(HEADER_CPUID, cpuid),
- FEAT_OPA(HEADER_TOTAL_MEM, total_mem),
+ FEAT_OPP(HEADER_HOSTNAME, hostname),
+ FEAT_OPP(HEADER_OSRELEASE, osrelease),
+ FEAT_OPP(HEADER_VERSION, version),
+ FEAT_OPP(HEADER_ARCH, arch),
+ FEAT_OPP(HEADER_NRCPUS, nrcpus),
+ FEAT_OPP(HEADER_CPUDESC, cpudesc),
+ FEAT_OPP(HEADER_CPUID, cpuid),
+ FEAT_OPP(HEADER_TOTAL_MEM, total_mem),
FEAT_OPP(HEADER_EVENT_DESC, event_desc),
- FEAT_OPA(HEADER_CMDLINE, cmdline),
+ FEAT_OPP(HEADER_CMDLINE, cmdline),
FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology),
FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology),
FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
- FEAT_OPA(HEADER_PMU_MAPPINGS, pmu_mappings),
+ FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings),
};
struct header_print_data {
--
1.7.11.4
--
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