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-rw-r--r--tools/perf/util/evlist.c12
-rw-r--r--tools/perf/util/evsel.c3
-rw-r--r--tools/perf/util/header.h1
-rw-r--r--tools/perf/util/intel-pt-decoder/intel-pt-decoder.c38
-rw-r--r--tools/perf/util/machine.c6
-rw-r--r--tools/perf/util/parse-events.c8
-rw-r--r--tools/perf/util/parse-events.h3
-rw-r--r--tools/perf/util/pmu.c176
-rw-r--r--tools/perf/util/pmu.h6
-rw-r--r--tools/perf/util/probe-event.c2
-rw-r--r--tools/perf/util/strbuf.h3
-rw-r--r--tools/perf/util/thread.c9
12 files changed, 223 insertions, 44 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index ea34c5a..d92e020 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -384,15 +384,14 @@ void perf_evlist__toggle_enable(struct perf_evlist *evlist)
static int perf_evlist__enable_event_cpu(struct perf_evlist *evlist,
struct perf_evsel *evsel, int cpu)
{
- int thread, err;
+ int thread;
int nr_threads = perf_evlist__nr_threads(evlist, evsel);
if (!evsel->fd)
return -EINVAL;
for (thread = 0; thread < nr_threads; thread++) {
- err = ioctl(FD(evsel, cpu, thread),
- PERF_EVENT_IOC_ENABLE, 0);
+ int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0);
if (err)
return err;
}
@@ -403,14 +402,14 @@ static int perf_evlist__enable_event_thread(struct perf_evlist *evlist,
struct perf_evsel *evsel,
int thread)
{
- int cpu, err;
+ int cpu;
int nr_cpus = cpu_map__nr(evlist->cpus);
if (!evsel->fd)
return -EINVAL;
for (cpu = 0; cpu < nr_cpus; cpu++) {
- err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0);
+ int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0);
if (err)
return err;
}
@@ -1606,10 +1605,9 @@ void perf_evlist__close(struct perf_evlist *evlist)
struct perf_evsel *evsel;
int ncpus = cpu_map__nr(evlist->cpus);
int nthreads = thread_map__nr(evlist->threads);
- int n;
evlist__for_each_entry_reverse(evlist, evsel) {
- n = evsel->cpus ? evsel->cpus->nr : ncpus;
+ int n = evsel->cpus ? evsel->cpus->nr : ncpus;
perf_evsel__close(evsel, n, nthreads);
}
}
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 380e84c..8bc2711 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -985,14 +985,13 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
{
- int cpu, thread;
-
if (evsel->system_wide)
nthreads = 1;
evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int));
if (evsel->fd) {
+ int cpu, thread;
for (cpu = 0; cpu < ncpus; cpu++) {
for (thread = 0; thread < nthreads; thread++) {
FD(evsel, cpu, thread) = -1;
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index d306ca1..d30109b 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -151,4 +151,5 @@ int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
*/
int get_cpuid(char *buffer, size_t sz);
+char *get_cpuid_str(void);
#endif /* __PERF_HEADER_H */
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
index 7591a0c..16c06d3 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -90,6 +90,7 @@ struct intel_pt_decoder {
bool pge;
bool have_tma;
bool have_cyc;
+ bool fixup_last_mtc;
uint64_t pos;
uint64_t last_ip;
uint64_t ip;
@@ -586,10 +587,31 @@ struct intel_pt_calc_cyc_to_tsc_info {
uint64_t tsc_timestamp;
uint64_t timestamp;
bool have_tma;
+ bool fixup_last_mtc;
bool from_mtc;
double cbr_cyc_to_tsc;
};
+/*
+ * MTC provides a 8-bit slice of CTC but the TMA packet only provides the lower
+ * 16 bits of CTC. If mtc_shift > 8 then some of the MTC bits are not in the CTC
+ * provided by the TMA packet. Fix-up the last_mtc calculated from the TMA
+ * packet by copying the missing bits from the current MTC assuming the least
+ * difference between the two, and that the current MTC comes after last_mtc.
+ */
+static void intel_pt_fixup_last_mtc(uint32_t mtc, int mtc_shift,
+ uint32_t *last_mtc)
+{
+ uint32_t first_missing_bit = 1U << (16 - mtc_shift);
+ uint32_t mask = ~(first_missing_bit - 1);
+
+ *last_mtc |= mtc & mask;
+ if (*last_mtc >= mtc) {
+ *last_mtc -= first_missing_bit;
+ *last_mtc &= 0xff;
+ }
+}
+
static int intel_pt_calc_cyc_cb(struct intel_pt_pkt_info *pkt_info)
{
struct intel_pt_decoder *decoder = pkt_info->decoder;
@@ -619,6 +641,11 @@ static int intel_pt_calc_cyc_cb(struct intel_pt_pkt_info *pkt_info)
return 0;
mtc = pkt_info->packet.payload;
+ if (decoder->mtc_shift > 8 && data->fixup_last_mtc) {
+ data->fixup_last_mtc = false;
+ intel_pt_fixup_last_mtc(mtc, decoder->mtc_shift,
+ &data->last_mtc);
+ }
if (mtc > data->last_mtc)
mtc_delta = mtc - data->last_mtc;
else
@@ -687,6 +714,7 @@ static int intel_pt_calc_cyc_cb(struct intel_pt_pkt_info *pkt_info)
data->ctc_delta = 0;
data->have_tma = true;
+ data->fixup_last_mtc = true;
return 0;
@@ -753,6 +781,7 @@ static void intel_pt_calc_cyc_to_tsc(struct intel_pt_decoder *decoder,
.tsc_timestamp = decoder->tsc_timestamp,
.timestamp = decoder->timestamp,
.have_tma = decoder->have_tma,
+ .fixup_last_mtc = decoder->fixup_last_mtc,
.from_mtc = from_mtc,
.cbr_cyc_to_tsc = 0,
};
@@ -1271,6 +1300,7 @@ static void intel_pt_calc_tma(struct intel_pt_decoder *decoder)
}
decoder->ctc_delta = 0;
decoder->have_tma = true;
+ decoder->fixup_last_mtc = true;
intel_pt_log("CTC timestamp " x64_fmt " last MTC %#x CTC rem %#x\n",
decoder->ctc_timestamp, decoder->last_mtc, ctc_rem);
}
@@ -1285,6 +1315,12 @@ static void intel_pt_calc_mtc_timestamp(struct intel_pt_decoder *decoder)
mtc = decoder->packet.payload;
+ if (decoder->mtc_shift > 8 && decoder->fixup_last_mtc) {
+ decoder->fixup_last_mtc = false;
+ intel_pt_fixup_last_mtc(mtc, decoder->mtc_shift,
+ &decoder->last_mtc);
+ }
+
if (mtc > decoder->last_mtc)
mtc_delta = mtc - decoder->last_mtc;
else
@@ -1353,6 +1389,8 @@ static void intel_pt_calc_cyc_timestamp(struct intel_pt_decoder *decoder)
timestamp, decoder->timestamp);
else
decoder->timestamp = timestamp;
+
+ decoder->timestamp_insn_cnt = 0;
}
/* Walk PSB+ packets when already in sync. */
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 18e4519..df85b9e 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1745,9 +1745,8 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
int max_stack)
{
struct ip_callchain *chain = sample->callchain;
- int chain_nr = min(max_stack, (int)chain->nr);
+ int chain_nr = min(max_stack, (int)chain->nr), i;
u8 cpumode = PERF_RECORD_MISC_USER;
- int i, j, err;
u64 ip;
for (i = 0; i < chain_nr; i++) {
@@ -1758,7 +1757,7 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
/* LBR only affects the user callchain */
if (i != chain_nr) {
struct branch_stack *lbr_stack = sample->branch_stack;
- int lbr_nr = lbr_stack->nr;
+ int lbr_nr = lbr_stack->nr, j;
/*
* LBR callstack can only get user call chain.
* The mix_chain_nr is kernel call chain
@@ -1772,6 +1771,7 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
int mix_chain_nr = i + 1 + lbr_nr + 1;
for (j = 0; j < mix_chain_nr; j++) {
+ int err;
if (callchain_param.order == ORDER_CALLEE) {
if (j < i + 1)
ip = chain->ips[j];
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 33546c3..4e778ea 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -924,6 +924,7 @@ config_term_avail(int term_type, struct parse_events_error *err)
case PARSE_EVENTS__TERM_TYPE_CONFIG1:
case PARSE_EVENTS__TERM_TYPE_CONFIG2:
case PARSE_EVENTS__TERM_TYPE_NAME:
+ case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
return true;
default:
if (!err)
@@ -1458,7 +1459,7 @@ comp_pmu(const void *p1, const void *p2)
struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
- return strcmp(pmu1->symbol, pmu2->symbol);
+ return strcasecmp(pmu1->symbol, pmu2->symbol);
}
static void perf_pmu__parse_cleanup(void)
@@ -2263,7 +2264,8 @@ out_enomem:
/*
* Print the help text for the event symbols:
*/
-void print_events(const char *event_glob, bool name_only)
+void print_events(const char *event_glob, bool name_only, bool quiet_flag,
+ bool long_desc)
{
print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
@@ -2273,7 +2275,7 @@ void print_events(const char *event_glob, bool name_only)
print_hwcache_events(event_glob, name_only);
- print_pmu_events(event_glob, name_only);
+ print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
if (event_glob != NULL)
return;
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 8d09a97..da246a3 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -172,7 +172,8 @@ void parse_events_update_lists(struct list_head *list_event,
void parse_events_evlist_error(struct parse_events_evlist *data,
int idx, const char *str);
-void print_events(const char *event_glob, bool name_only);
+void print_events(const char *event_glob, bool name_only, bool quiet,
+ bool long_desc);
struct event_symbol {
const char *symbol;
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 2babcdf..b1474dc 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -12,6 +12,9 @@
#include "pmu.h"
#include "parse-events.h"
#include "cpumap.h"
+#include "header.h"
+#include "pmu-events/pmu-events.h"
+#include "cache.h"
struct perf_pmu_format {
char *name;
@@ -220,7 +223,8 @@ static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
}
static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
- char *desc __maybe_unused, char *val)
+ char *desc, char *val, char *long_desc,
+ char *topic)
{
struct perf_pmu_alias *alias;
int ret;
@@ -253,6 +257,11 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
perf_pmu__parse_snapshot(alias, dir, name);
}
+ alias->desc = desc ? strdup(desc) : NULL;
+ alias->long_desc = long_desc ? strdup(long_desc) :
+ desc ? strdup(desc) : NULL;
+ alias->topic = topic ? strdup(topic) : NULL;
+
list_add_tail(&alias->list, list);
return 0;
@@ -269,7 +278,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
buf[ret] = 0;
- return __perf_pmu__new_alias(list, dir, name, NULL, buf);
+ return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL);
}
static inline bool pmu_alias_info_file(char *name)
@@ -473,6 +482,68 @@ static struct cpu_map *pmu_cpumask(const char *name)
return cpus;
}
+/*
+ * Return the CPU id as a raw string.
+ *
+ * Each architecture should provide a more precise id string that
+ * can be use to match the architecture's "mapfile".
+ */
+char * __weak get_cpuid_str(void)
+{
+ return NULL;
+}
+
+/*
+ * From the pmu_events_map, find the table of PMU events that corresponds
+ * to the current running CPU. Then, add all PMU events from that table
+ * as aliases.
+ */
+static void pmu_add_cpu_aliases(struct list_head *head)
+{
+ int i;
+ struct pmu_events_map *map;
+ struct pmu_event *pe;
+ char *cpuid;
+
+ cpuid = getenv("PERF_CPUID");
+ if (cpuid)
+ cpuid = strdup(cpuid);
+ if (!cpuid)
+ cpuid = get_cpuid_str();
+ if (!cpuid)
+ return;
+
+ pr_debug("Using CPUID %s\n", cpuid);
+
+ i = 0;
+ while (1) {
+ map = &pmu_events_map[i++];
+ if (!map->table)
+ goto out;
+
+ if (!strcmp(map->cpuid, cpuid))
+ break;
+ }
+
+ /*
+ * Found a matching PMU events table. Create aliases
+ */
+ i = 0;
+ while (1) {
+ pe = &map->table[i++];
+ if (!pe->name)
+ break;
+
+ /* need type casts to override 'const' */
+ __perf_pmu__new_alias(head, NULL, (char *)pe->name,
+ (char *)pe->desc, (char *)pe->event,
+ (char *)pe->long_desc, (char *)pe->topic);
+ }
+
+out:
+ free(cpuid);
+}
+
struct perf_event_attr * __weak
perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
{
@@ -497,6 +568,9 @@ static struct perf_pmu *pmu_lookup(const char *name)
if (pmu_aliases(name, &aliases))
return NULL;
+ if (!strcmp(name, "cpu"))
+ pmu_add_cpu_aliases(&aliases);
+
if (pmu_type(name, &type))
return NULL;
@@ -983,21 +1057,63 @@ static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
return buf;
}
-static int cmp_string(const void *a, const void *b)
+struct sevent {
+ char *name;
+ char *desc;
+ char *topic;
+};
+
+static int cmp_sevent(const void *a, const void *b)
{
- const char * const *as = a;
- const char * const *bs = b;
- return strcmp(*as, *bs);
+ const struct sevent *as = a;
+ const struct sevent *bs = b;
+
+ /* Put extra events last */
+ if (!!as->desc != !!bs->desc)
+ return !!as->desc - !!bs->desc;
+ if (as->topic && bs->topic) {
+ int n = strcmp(as->topic, bs->topic);
+
+ if (n)
+ return n;
+ }
+ return strcmp(as->name, bs->name);
}
-void print_pmu_events(const char *event_glob, bool name_only)
+static void wordwrap(char *s, int start, int max, int corr)
+{
+ int column = start;
+ int n;
+
+ while (*s) {
+ int wlen = strcspn(s, " \t");
+
+ if (column + wlen >= max && column > start) {
+ printf("\n%*s", start, "");
+ column = start + corr;
+ }
+ n = printf("%s%.*s", column > start ? " " : "", wlen, s);
+ if (n <= 0)
+ break;
+ s += wlen;
+ column += n;
+ while (isspace(*s))
+ s++;
+ }
+}
+
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
+ bool long_desc)
{
struct perf_pmu *pmu;
struct perf_pmu_alias *alias;
char buf[1024];
int printed = 0;
int len, j;
- char **aliases;
+ struct sevent *aliases;
+ int numdesc = 0;
+ int columns = pager_get_columns();
+ char *topic = NULL;
pmu = NULL;
len = 0;
@@ -1007,14 +1123,15 @@ void print_pmu_events(const char *event_glob, bool name_only)
if (pmu->selectable)
len++;
}
- aliases = zalloc(sizeof(char *) * len);
+ aliases = zalloc(sizeof(struct sevent) * len);
if (!aliases)
goto out_enomem;
pmu = NULL;
j = 0;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
list_for_each_entry(alias, &pmu->aliases, list) {
- char *name = format_alias(buf, sizeof(buf), pmu, alias);
+ char *name = alias->desc ? alias->name :
+ format_alias(buf, sizeof(buf), pmu, alias);
bool is_cpu = !strcmp(pmu->name, "cpu");
if (event_glob != NULL &&
@@ -1023,12 +1140,21 @@ void print_pmu_events(const char *event_glob, bool name_only)
event_glob))))
continue;
- if (is_cpu && !name_only)
+ if (is_cpu && !name_only && !alias->desc)
name = format_alias_or(buf, sizeof(buf), pmu, alias);
- aliases[j] = strdup(name);
- if (aliases[j] == NULL)
+ aliases[j].name = name;
+ if (is_cpu && !name_only && !alias->desc)
+ aliases[j].name = format_alias_or(buf,
+ sizeof(buf),
+ pmu, alias);
+ aliases[j].name = strdup(aliases[j].name);
+ if (!aliases[j].name)
goto out_enomem;
+
+ aliases[j].desc = long_desc ? alias->long_desc :
+ alias->desc;
+ aliases[j].topic = alias->topic;
j++;
}
if (pmu->selectable &&
@@ -1036,25 +1162,39 @@ void print_pmu_events(const char *event_glob, bool name_only)
char *s;
if (asprintf(&s, "%s//", pmu->name) < 0)
goto out_enomem;
- aliases[j] = s;
+ aliases[j].name = s;
j++;
}
}
len = j;
- qsort(aliases, len, sizeof(char *), cmp_string);
+ qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
for (j = 0; j < len; j++) {
if (name_only) {
- printf("%s ", aliases[j]);
+ printf("%s ", aliases[j].name);
continue;
}
- printf(" %-50s [Kernel PMU event]\n", aliases[j]);
+ if (aliases[j].desc && !quiet_flag) {
+ if (numdesc++ == 0)
+ printf("\n");
+ if (aliases[j].topic && (!topic ||
+ strcmp(topic, aliases[j].topic))) {
+ printf("%s%s:\n", topic ? "\n" : "",
+ aliases[j].topic);
+ topic = aliases[j].topic;
+ }
+ printf(" %-50s\n", aliases[j].name);
+ printf("%*s", 8, "[");
+ wordwrap(aliases[j].desc, 8, columns, 0);
+ printf("]\n");
+ } else
+ printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
printed++;
}
if (printed && pager_in_use())
printf("\n");
out_free:
for (j = 0; j < len; j++)
- zfree(&aliases[j]);
+ zfree(&aliases[j].name);
zfree(&aliases);
return;
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 743422a..2571203 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -40,6 +40,9 @@ struct perf_pmu_info {
struct perf_pmu_alias {
char *name;
+ char *desc;
+ char *long_desc;
+ char *topic;
struct list_head terms; /* HEAD struct parse_events_term -> list */
struct list_head list; /* ELEM */
char unit[UNIT_MAX_LEN+1];
@@ -71,7 +74,8 @@ int perf_pmu__format_parse(char *dir, struct list_head *head);
struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
-void print_pmu_events(const char *event_glob, bool name_only);
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet,
+ bool long_desc);
bool pmu_have_event(const char *pname, const char *name);
int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index fcfbef0..d281ae2 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -213,7 +213,7 @@ static int convert_exec_to_group(const char *exec, char **result)
goto out;
}
- for (ptr2 = ptr1; ptr2 != '\0'; ptr2++) {
+ for (ptr2 = ptr1; *ptr2 != '\0'; ptr2++) {
if (!isalnum(*ptr2) && *ptr2 != '_') {
*ptr2 = '\0';
break;
diff --git a/tools/perf/util/strbuf.h b/tools/perf/util/strbuf.h
index b268a66..318424e 100644
--- a/tools/perf/util/strbuf.h
+++ b/tools/perf/util/strbuf.h
@@ -66,9 +66,8 @@ static inline ssize_t strbuf_avail(const struct strbuf *sb) {
int strbuf_grow(struct strbuf *buf, size_t);
static inline int strbuf_setlen(struct strbuf *sb, size_t len) {
- int ret;
if (!sb->alloc) {
- ret = strbuf_grow(sb, 0);
+ int ret = strbuf_grow(sb, 0);
if (ret)
return ret;
}
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 8b10a55..f5af87f 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -14,13 +14,12 @@
int thread__init_map_groups(struct thread *thread, struct machine *machine)
{
- struct thread *leader;
pid_t pid = thread->pid_;
if (pid == thread->tid || pid == -1) {
thread->mg = map_groups__new(machine);
} else {
- leader = __machine__findnew_thread(machine, pid, pid);
+ struct thread *leader = __machine__findnew_thread(machine, pid, pid);
if (leader) {
thread->mg = map_groups__get(leader->mg);
thread__put(leader);
@@ -130,11 +129,10 @@ int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp,
bool exec)
{
struct comm *new, *curr = thread__comm(thread);
- int err;
/* Override the default :tid entry */
if (!thread->comm_set) {
- err = comm__override(curr, str, timestamp, exec);
+ int err = comm__override(curr, str, timestamp, exec);
if (err)
return err;
} else {
@@ -270,10 +268,9 @@ static int thread__clone_map_groups(struct thread *thread,
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
{
- int err;
-
if (parent->comm_set) {
const char *comm = thread__comm_str(parent);
+ int err;
if (!comm)
return -ENOMEM;
err = thread__set_comm(thread, comm, timestamp);
generated by cgit v0.10.2 at 2024-08-23 13:22:37 (GMT)