header.c (152fefa921535665f95840c08062844ab2f5593e) header.c (a8bb559bd4eff5c71601e2e61a4bd1deef44a03c)
1#define _FILE_OFFSET_BITS 64
2
3#include "util.h"
4#include <sys/types.h>
5#include <byteswap.h>
6#include <unistd.h>
7#include <stdio.h>
8#include <stdlib.h>

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1080 lseek(fd, offset, SEEK_SET);
1081 return -1;
1082 }
1083
1084 return 0;
1085}
1086
1087/*
1#define _FILE_OFFSET_BITS 64
2
3#include "util.h"
4#include <sys/types.h>
5#include <byteswap.h>
6#include <unistd.h>
7#include <stdio.h>
8#include <stdlib.h>

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1080 lseek(fd, offset, SEEK_SET);
1081 return -1;
1082 }
1083
1084 return 0;
1085}
1086
1087/*
1088 * File format:
1089 *
1090 * struct group_descs {
1091 * u32 nr_groups;
1092 * struct group_desc {
1093 * char name[];
1094 * u32 leader_idx;
1095 * u32 nr_members;
1096 * }[nr_groups];
1097 * };
1098 */
1099static int write_group_desc(int fd, struct perf_header *h __maybe_unused,
1100 struct perf_evlist *evlist)
1101{
1102 u32 nr_groups = evlist->nr_groups;
1103 struct perf_evsel *evsel;
1104 int ret;
1105
1106 ret = do_write(fd, &nr_groups, sizeof(nr_groups));
1107 if (ret < 0)
1108 return ret;
1109
1110 list_for_each_entry(evsel, &evlist->entries, node) {
1111 if (perf_evsel__is_group_leader(evsel) &&
1112 evsel->nr_members > 1) {
1113 const char *name = evsel->group_name ?: "{anon_group}";
1114 u32 leader_idx = evsel->idx;
1115 u32 nr_members = evsel->nr_members;
1116
1117 ret = do_write_string(fd, name);
1118 if (ret < 0)
1119 return ret;
1120
1121 ret = do_write(fd, &leader_idx, sizeof(leader_idx));
1122 if (ret < 0)
1123 return ret;
1124
1125 ret = do_write(fd, &nr_members, sizeof(nr_members));
1126 if (ret < 0)
1127 return ret;
1128 }
1129 }
1130 return 0;
1131}
1132
1133/*
1088 * default get_cpuid(): nothing gets recorded
1089 * actual implementation must be in arch/$(ARCH)/util/header.c
1090 */
1091int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused,
1092 size_t sz __maybe_unused)
1093{
1094 return -1;
1095}

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1442 fprintf(fp, "\n");
1443
1444 if (!pmu_num)
1445 return;
1446error:
1447 fprintf(fp, "# pmu mappings: unable to read\n");
1448}
1449
1134 * default get_cpuid(): nothing gets recorded
1135 * actual implementation must be in arch/$(ARCH)/util/header.c
1136 */
1137int __attribute__ ((weak)) get_cpuid(char *buffer __maybe_unused,
1138 size_t sz __maybe_unused)
1139{
1140 return -1;
1141}

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1488 fprintf(fp, "\n");
1489
1490 if (!pmu_num)
1491 return;
1492error:
1493 fprintf(fp, "# pmu mappings: unable to read\n");
1494}
1495
1496static void print_group_desc(struct perf_header *ph, int fd __maybe_unused,
1497 FILE *fp)
1498{
1499 struct perf_session *session;
1500 struct perf_evsel *evsel;
1501 u32 nr = 0;
1502
1503 session = container_of(ph, struct perf_session, header);
1504
1505 list_for_each_entry(evsel, &session->evlist->entries, node) {
1506 if (perf_evsel__is_group_leader(evsel) &&
1507 evsel->nr_members > 1) {
1508 fprintf(fp, "# group: %s{%s", evsel->group_name ?: "",
1509 perf_evsel__name(evsel));
1510
1511 nr = evsel->nr_members - 1;
1512 } else if (nr) {
1513 fprintf(fp, ",%s", perf_evsel__name(evsel));
1514
1515 if (--nr == 0)
1516 fprintf(fp, "}\n");
1517 }
1518 }
1519}
1520
1450static int __event_process_build_id(struct build_id_event *bev,
1451 char *filename,
1452 struct perf_session *session)
1453{
1454 int err = -1;
1455 struct list_head *head;
1456 struct machine *machine;
1457 u16 misc;

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1956 ph->env.pmu_mappings = strbuf_detach(&sb, NULL);
1957 return 0;
1958
1959error:
1960 strbuf_release(&sb);
1961 return -1;
1962}
1963
1521static int __event_process_build_id(struct build_id_event *bev,
1522 char *filename,
1523 struct perf_session *session)
1524{
1525 int err = -1;
1526 struct list_head *head;
1527 struct machine *machine;
1528 u16 misc;

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2027 ph->env.pmu_mappings = strbuf_detach(&sb, NULL);
2028 return 0;
2029
2030error:
2031 strbuf_release(&sb);
2032 return -1;
2033}
2034
2035static int process_group_desc(struct perf_file_section *section __maybe_unused,
2036 struct perf_header *ph, int fd,
2037 void *data __maybe_unused)
2038{
2039 size_t ret = -1;
2040 u32 i, nr, nr_groups;
2041 struct perf_session *session;
2042 struct perf_evsel *evsel, *leader = NULL;
2043 struct group_desc {
2044 char *name;
2045 u32 leader_idx;
2046 u32 nr_members;
2047 } *desc;
2048
2049 if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups))
2050 return -1;
2051
2052 if (ph->needs_swap)
2053 nr_groups = bswap_32(nr_groups);
2054
2055 ph->env.nr_groups = nr_groups;
2056 if (!nr_groups) {
2057 pr_debug("group desc not available\n");
2058 return 0;
2059 }
2060
2061 desc = calloc(nr_groups, sizeof(*desc));
2062 if (!desc)
2063 return -1;
2064
2065 for (i = 0; i < nr_groups; i++) {
2066 desc[i].name = do_read_string(fd, ph);
2067 if (!desc[i].name)
2068 goto out_free;
2069
2070 if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32))
2071 goto out_free;
2072
2073 if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32))
2074 goto out_free;
2075
2076 if (ph->needs_swap) {
2077 desc[i].leader_idx = bswap_32(desc[i].leader_idx);
2078 desc[i].nr_members = bswap_32(desc[i].nr_members);
2079 }
2080 }
2081
2082 /*
2083 * Rebuild group relationship based on the group_desc
2084 */
2085 session = container_of(ph, struct perf_session, header);
2086 session->evlist->nr_groups = nr_groups;
2087
2088 i = nr = 0;
2089 list_for_each_entry(evsel, &session->evlist->entries, node) {
2090 if (evsel->idx == (int) desc[i].leader_idx) {
2091 evsel->leader = evsel;
2092 /* {anon_group} is a dummy name */
2093 if (strcmp(desc[i].name, "{anon_group}"))
2094 evsel->group_name = desc[i].name;
2095 evsel->nr_members = desc[i].nr_members;
2096
2097 if (i >= nr_groups || nr > 0) {
2098 pr_debug("invalid group desc\n");
2099 goto out_free;
2100 }
2101
2102 leader = evsel;
2103 nr = evsel->nr_members - 1;
2104 i++;
2105 } else if (nr) {
2106 /* This is a group member */
2107 evsel->leader = leader;
2108
2109 nr--;
2110 }
2111 }
2112
2113 if (i != nr_groups || nr != 0) {
2114 pr_debug("invalid group desc\n");
2115 goto out_free;
2116 }
2117
2118 ret = 0;
2119out_free:
2120 while ((int) --i >= 0)
2121 free(desc[i].name);
2122 free(desc);
2123
2124 return ret;
2125}
2126
1964struct feature_ops {
1965 int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist);
1966 void (*print)(struct perf_header *h, int fd, FILE *fp);
1967 int (*process)(struct perf_file_section *section,
1968 struct perf_header *h, int fd, void *data);
1969 const char *name;
1970 bool full_only;
1971};

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1995 FEAT_OPP(HEADER_CPUID, cpuid),
1996 FEAT_OPP(HEADER_TOTAL_MEM, total_mem),
1997 FEAT_OPP(HEADER_EVENT_DESC, event_desc),
1998 FEAT_OPP(HEADER_CMDLINE, cmdline),
1999 FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology),
2000 FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology),
2001 FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
2002 FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings),
2127struct feature_ops {
2128 int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist);
2129 void (*print)(struct perf_header *h, int fd, FILE *fp);
2130 int (*process)(struct perf_file_section *section,
2131 struct perf_header *h, int fd, void *data);
2132 const char *name;
2133 bool full_only;
2134};

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2158 FEAT_OPP(HEADER_CPUID, cpuid),
2159 FEAT_OPP(HEADER_TOTAL_MEM, total_mem),
2160 FEAT_OPP(HEADER_EVENT_DESC, event_desc),
2161 FEAT_OPP(HEADER_CMDLINE, cmdline),
2162 FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology),
2163 FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology),
2164 FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
2165 FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings),
2166 FEAT_OPP(HEADER_GROUP_DESC, group_desc),
2003};
2004
2005struct header_print_data {
2006 FILE *fp;
2007 bool full; /* extended list of headers */
2008};
2009
2010static int perf_file_section__fprintf_info(struct perf_file_section *section,

--- 981 unchanged lines hidden --- 		2167};
2168
2169struct header_print_data {
2170 FILE *fp;
2171 bool full; /* extended list of headers */
2172};
2173
2174static int perf_file_section__fprintf_info(struct perf_file_section *section,

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