* [PATCH 01/17] perf tests shell: Skip trace+probe_vfs_getname.sh if built without trace support
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 02/17] perf header: Fix wrong node write in NUMA_TOPOLOGY feature Arnaldo Carvalho de Melo
` (16 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Tommi Rantala, Alexander Shishkin,
Hendrik Brueckner, Jiri Olsa, Kim Phillips, Michael Petlan,
Peter Zijlstra, Arnaldo Carvalho de Melo
From: Tommi Rantala <tommi.t.rantala@nokia.com>
If perf was built without trace support, the trace+probe_vfs_getname.sh
'perf test' entry fails:
# perf trace -h
perf: 'trace' is not a perf-command. See 'perf --help'
# perf test 64
64: Check open filename arg using perf trace + vfs_getname: FAILED!
Check trace support, so that we'll skip the test in that case:
# perf test 64
64: Check open filename arg using perf trace + vfs_getname: Skip
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190215134253.11454-1-tt.rantala@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/tests/shell/lib/probe.sh | 5 +++++
tools/perf/tests/shell/trace+probe_vfs_getname.sh | 1 +
2 files changed, 6 insertions(+)
diff --git a/tools/perf/tests/shell/lib/probe.sh b/tools/perf/tests/shell/lib/probe.sh
index 6293cc660947..e37787be672b 100644
--- a/tools/perf/tests/shell/lib/probe.sh
+++ b/tools/perf/tests/shell/lib/probe.sh
@@ -4,3 +4,8 @@ skip_if_no_perf_probe() {
perf probe 2>&1 | grep -q 'is not a perf-command' && return 2
return 0
}
+
+skip_if_no_perf_trace() {
+ perf trace -h 2>&1 | grep -q -e 'is not a perf-command' -e 'trace command not available' && return 2
+ return 0
+}
diff --git a/tools/perf/tests/shell/trace+probe_vfs_getname.sh b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
index 50109f27ca07..147efeb6b195 100755
--- a/tools/perf/tests/shell/trace+probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
@@ -12,6 +12,7 @@
. $(dirname $0)/lib/probe.sh
skip_if_no_perf_probe || exit 2
+skip_if_no_perf_trace || exit 2
. $(dirname $0)/lib/probe_vfs_getname.sh
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 02/17] perf header: Fix wrong node write in NUMA_TOPOLOGY feature
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 01/17] perf tests shell: Skip trace+probe_vfs_getname.sh if built without trace support Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 03/17] perf tools: Add cpu_topology object Arnaldo Carvalho de Melo
` (15 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
We are currently passing the node index instead of the real node number.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: fbe96f29ce4b ("perf tools: Make perf.data more self-descriptive (v8)"
Link: http://lkml.kernel.org/r/20190219095815.15931-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
| 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 61ce197c5362..c66f26ec557a 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -879,7 +879,7 @@ static int write_numa_topology(struct feat_fd *ff,
if (ret < 0)
break;
- ret = write_topo_node(ff, i);
+ ret = write_topo_node(ff, j);
if (ret < 0)
break;
}
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 03/17] perf tools: Add cpu_topology object
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 01/17] perf tests shell: Skip trace+probe_vfs_getname.sh if built without trace support Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 02/17] perf header: Fix wrong node write in NUMA_TOPOLOGY feature Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 04/17] perf tools: Add numa_topology object Arnaldo Carvalho de Melo
` (14 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
Make struct cpu_topo global and rename it to 'struct cpu_topology', so
that it can be used from the 'perf record' command in the following
patches.
Add the following interface functions to load/free cpu topology details:
struct cpu_topology *cpu_topology__new(void);
void cpu_topology__delete(struct cpu_topology *tp);
Move it to a separate source file cputopo.c together with numa related
object in the following patches.
No functional change, the new interface will be used in upcoming changes.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190219095815.15931-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/Build | 1 +
tools/perf/util/cputopo.c | 144 ++++++++++++++++++++++++++++++++++++
tools/perf/util/cputopo.h | 17 +++++
| 150 +-------------------------------------
4 files changed, 166 insertions(+), 146 deletions(-)
create mode 100644 tools/perf/util/cputopo.c
create mode 100644 tools/perf/util/cputopo.h
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index ca0741c91903..3008d49fa587 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -69,6 +69,7 @@ perf-y += hist.o
perf-y += util.o
perf-y += xyarray.o
perf-y += cpumap.o
+perf-y += cputopo.o
perf-y += cgroup.o
perf-y += target.o
perf-y += rblist.o
diff --git a/tools/perf/util/cputopo.c b/tools/perf/util/cputopo.c
new file mode 100644
index 000000000000..84470ed4e707
--- /dev/null
+++ b/tools/perf/util/cputopo.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <sys/param.h>
+
+#include "cputopo.h"
+#include "cpumap.h"
+#include "util.h"
+
+
+#define CORE_SIB_FMT \
+ "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list"
+#define THRD_SIB_FMT \
+ "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list"
+
+static int build_cpu_topology(struct cpu_topology *tp, int cpu)
+{
+ FILE *fp;
+ char filename[MAXPATHLEN];
+ char *buf = NULL, *p;
+ size_t len = 0;
+ ssize_t sret;
+ u32 i = 0;
+ int ret = -1;
+
+ sprintf(filename, CORE_SIB_FMT, cpu);
+ fp = fopen(filename, "r");
+ if (!fp)
+ goto try_threads;
+
+ sret = getline(&buf, &len, fp);
+ fclose(fp);
+ if (sret <= 0)
+ goto try_threads;
+
+ p = strchr(buf, '\n');
+ if (p)
+ *p = '\0';
+
+ for (i = 0; i < tp->core_sib; i++) {
+ if (!strcmp(buf, tp->core_siblings[i]))
+ break;
+ }
+ if (i == tp->core_sib) {
+ tp->core_siblings[i] = buf;
+ tp->core_sib++;
+ buf = NULL;
+ len = 0;
+ }
+ ret = 0;
+
+try_threads:
+ sprintf(filename, THRD_SIB_FMT, cpu);
+ fp = fopen(filename, "r");
+ if (!fp)
+ goto done;
+
+ if (getline(&buf, &len, fp) <= 0)
+ goto done;
+
+ p = strchr(buf, '\n');
+ if (p)
+ *p = '\0';
+
+ for (i = 0; i < tp->thread_sib; i++) {
+ if (!strcmp(buf, tp->thread_siblings[i]))
+ break;
+ }
+ if (i == tp->thread_sib) {
+ tp->thread_siblings[i] = buf;
+ tp->thread_sib++;
+ buf = NULL;
+ }
+ ret = 0;
+done:
+ if (fp)
+ fclose(fp);
+ free(buf);
+ return ret;
+}
+
+void cpu_topology__delete(struct cpu_topology *tp)
+{
+ u32 i;
+
+ if (!tp)
+ return;
+
+ for (i = 0 ; i < tp->core_sib; i++)
+ zfree(&tp->core_siblings[i]);
+
+ for (i = 0 ; i < tp->thread_sib; i++)
+ zfree(&tp->thread_siblings[i]);
+
+ free(tp);
+}
+
+struct cpu_topology *cpu_topology__new(void)
+{
+ struct cpu_topology *tp = NULL;
+ void *addr;
+ u32 nr, i;
+ size_t sz;
+ long ncpus;
+ int ret = -1;
+ struct cpu_map *map;
+
+ ncpus = cpu__max_present_cpu();
+
+ /* build online CPU map */
+ map = cpu_map__new(NULL);
+ if (map == NULL) {
+ pr_debug("failed to get system cpumap\n");
+ return NULL;
+ }
+
+ nr = (u32)(ncpus & UINT_MAX);
+
+ sz = nr * sizeof(char *);
+ addr = calloc(1, sizeof(*tp) + 2 * sz);
+ if (!addr)
+ goto out_free;
+
+ tp = addr;
+ addr += sizeof(*tp);
+ tp->core_siblings = addr;
+ addr += sz;
+ tp->thread_siblings = addr;
+
+ for (i = 0; i < nr; i++) {
+ if (!cpu_map__has(map, i))
+ continue;
+
+ ret = build_cpu_topology(tp, i);
+ if (ret < 0)
+ break;
+ }
+
+out_free:
+ cpu_map__put(map);
+ if (ret) {
+ cpu_topology__delete(tp);
+ tp = NULL;
+ }
+ return tp;
+}
diff --git a/tools/perf/util/cputopo.h b/tools/perf/util/cputopo.h
new file mode 100644
index 000000000000..4b5f4112b6f8
--- /dev/null
+++ b/tools/perf/util/cputopo.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PERF_CPUTOPO_H
+#define __PERF_CPUTOPO_H
+
+#include <linux/types.h>
+
+struct cpu_topology {
+ u32 core_sib;
+ u32 thread_sib;
+ char **core_siblings;
+ char **thread_siblings;
+};
+
+struct cpu_topology *cpu_topology__new(void);
+void cpu_topology__delete(struct cpu_topology *tp);
+
+#endif /* __PERF_CPUTOPO_H */
--git a/tools/perf/util/header.c b/tools/perf/util/header.c
index c66f26ec557a..80ac57e6d38f 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -39,6 +39,7 @@
#include "tool.h"
#include "time-utils.h"
#include "units.h"
+#include "cputopo.h"
#include "sane_ctype.h"
@@ -557,158 +558,15 @@ static int write_cmdline(struct feat_fd *ff,
return 0;
}
-#define CORE_SIB_FMT \
- "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list"
-#define THRD_SIB_FMT \
- "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list"
-
-struct cpu_topo {
- u32 core_sib;
- u32 thread_sib;
- char **core_siblings;
- char **thread_siblings;
-};
-
-static int build_cpu_topo(struct cpu_topo *tp, int cpu)
-{
- FILE *fp;
- char filename[MAXPATHLEN];
- char *buf = NULL, *p;
- size_t len = 0;
- ssize_t sret;
- u32 i = 0;
- int ret = -1;
-
- sprintf(filename, CORE_SIB_FMT, cpu);
- fp = fopen(filename, "r");
- if (!fp)
- goto try_threads;
-
- sret = getline(&buf, &len, fp);
- fclose(fp);
- if (sret <= 0)
- goto try_threads;
-
- p = strchr(buf, '\n');
- if (p)
- *p = '\0';
-
- for (i = 0; i < tp->core_sib; i++) {
- if (!strcmp(buf, tp->core_siblings[i]))
- break;
- }
- if (i == tp->core_sib) {
- tp->core_siblings[i] = buf;
- tp->core_sib++;
- buf = NULL;
- len = 0;
- }
- ret = 0;
-
-try_threads:
- sprintf(filename, THRD_SIB_FMT, cpu);
- fp = fopen(filename, "r");
- if (!fp)
- goto done;
-
- if (getline(&buf, &len, fp) <= 0)
- goto done;
-
- p = strchr(buf, '\n');
- if (p)
- *p = '\0';
-
- for (i = 0; i < tp->thread_sib; i++) {
- if (!strcmp(buf, tp->thread_siblings[i]))
- break;
- }
- if (i == tp->thread_sib) {
- tp->thread_siblings[i] = buf;
- tp->thread_sib++;
- buf = NULL;
- }
- ret = 0;
-done:
- if(fp)
- fclose(fp);
- free(buf);
- return ret;
-}
-
-static void free_cpu_topo(struct cpu_topo *tp)
-{
- u32 i;
-
- if (!tp)
- return;
-
- for (i = 0 ; i < tp->core_sib; i++)
- zfree(&tp->core_siblings[i]);
-
- for (i = 0 ; i < tp->thread_sib; i++)
- zfree(&tp->thread_siblings[i]);
-
- free(tp);
-}
-
-static struct cpu_topo *build_cpu_topology(void)
-{
- struct cpu_topo *tp = NULL;
- void *addr;
- u32 nr, i;
- size_t sz;
- long ncpus;
- int ret = -1;
- struct cpu_map *map;
-
- ncpus = cpu__max_present_cpu();
-
- /* build online CPU map */
- map = cpu_map__new(NULL);
- if (map == NULL) {
- pr_debug("failed to get system cpumap\n");
- return NULL;
- }
-
- nr = (u32)(ncpus & UINT_MAX);
-
- sz = nr * sizeof(char *);
- addr = calloc(1, sizeof(*tp) + 2 * sz);
- if (!addr)
- goto out_free;
-
- tp = addr;
- addr += sizeof(*tp);
- tp->core_siblings = addr;
- addr += sz;
- tp->thread_siblings = addr;
-
- for (i = 0; i < nr; i++) {
- if (!cpu_map__has(map, i))
- continue;
-
- ret = build_cpu_topo(tp, i);
- if (ret < 0)
- break;
- }
-
-out_free:
- cpu_map__put(map);
- if (ret) {
- free_cpu_topo(tp);
- tp = NULL;
- }
- return tp;
-}
static int write_cpu_topology(struct feat_fd *ff,
struct perf_evlist *evlist __maybe_unused)
{
- struct cpu_topo *tp;
+ struct cpu_topology *tp;
u32 i;
int ret, j;
- tp = build_cpu_topology();
+ tp = cpu_topology__new();
if (!tp)
return -1;
@@ -746,7 +604,7 @@ static int write_cpu_topology(struct feat_fd *ff,
return ret;
}
done:
- free_cpu_topo(tp);
+ cpu_topology__delete(tp);
return ret;
}
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 04/17] perf tools: Add numa_topology object
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (2 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 03/17] perf tools: Add cpu_topology object Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 05/17] perf tools: Use sysfs__mountpoint() when reading cpu topology Arnaldo Carvalho de Melo
` (13 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
Add the numa_topology object to return the list of numa nodes together
with their cpus. It will replace the numa code in header.c and will be
used from 'perf record' in the following patches.
Add the following interface functions to load numa details:
struct numa_topology *numa_topology__new(void);
void numa_topology__delete(struct numa_topology *tp);
And replace the current (copied) local interface, with no functional
changes.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190219095815.15931-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/cputopo.c | 118 +++++++++++++++++++++++++++++++++++++
tools/perf/util/cputopo.h | 16 +++++
| 119 +++++++++-----------------------------
3 files changed, 160 insertions(+), 93 deletions(-)
diff --git a/tools/perf/util/cputopo.c b/tools/perf/util/cputopo.c
index 84470ed4e707..83ffca2ea9ee 100644
--- a/tools/perf/util/cputopo.c
+++ b/tools/perf/util/cputopo.c
@@ -1,9 +1,11 @@
// SPDX-License-Identifier: GPL-2.0
#include <sys/param.h>
+#include <inttypes.h>
#include "cputopo.h"
#include "cpumap.h"
#include "util.h"
+#include "env.h"
#define CORE_SIB_FMT \
@@ -142,3 +144,119 @@ struct cpu_topology *cpu_topology__new(void)
}
return tp;
}
+
+static int load_numa_node(struct numa_topology_node *node, int nr)
+{
+ char str[MAXPATHLEN];
+ char field[32];
+ char *buf = NULL, *p;
+ size_t len = 0;
+ int ret = -1;
+ FILE *fp;
+ u64 mem;
+
+ node->node = (u32) nr;
+
+ sprintf(str, "/sys/devices/system/node/node%d/meminfo", nr);
+ fp = fopen(str, "r");
+ if (!fp)
+ return -1;
+
+ while (getline(&buf, &len, fp) > 0) {
+ /* skip over invalid lines */
+ if (!strchr(buf, ':'))
+ continue;
+ if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2)
+ goto err;
+ if (!strcmp(field, "MemTotal:"))
+ node->mem_total = mem;
+ if (!strcmp(field, "MemFree:"))
+ node->mem_free = mem;
+ if (node->mem_total && node->mem_free)
+ break;
+ }
+
+ fclose(fp);
+ fp = NULL;
+
+ sprintf(str, "/sys/devices/system/node/node%d/cpulist", nr);
+
+ fp = fopen(str, "r");
+ if (!fp)
+ return -1;
+
+ if (getline(&buf, &len, fp) <= 0)
+ goto err;
+
+ p = strchr(buf, '\n');
+ if (p)
+ *p = '\0';
+
+ node->cpus = buf;
+ fclose(fp);
+ return 0;
+
+err:
+ free(buf);
+ if (fp)
+ fclose(fp);
+ return ret;
+}
+
+struct numa_topology *numa_topology__new(void)
+{
+ struct cpu_map *node_map = NULL;
+ struct numa_topology *tp = NULL;
+ char *buf = NULL;
+ size_t len = 0;
+ u32 nr, i;
+ FILE *fp;
+ char *c;
+
+ fp = fopen("/sys/devices/system/node/online", "r");
+ if (!fp)
+ return NULL;
+
+ if (getline(&buf, &len, fp) <= 0)
+ goto out;
+
+ c = strchr(buf, '\n');
+ if (c)
+ *c = '\0';
+
+ node_map = cpu_map__new(buf);
+ if (!node_map)
+ goto out;
+
+ nr = (u32) node_map->nr;
+
+ tp = zalloc(sizeof(*tp) + sizeof(tp->nodes[0])*nr);
+ if (!tp)
+ goto out;
+
+ tp->nr = nr;
+
+ for (i = 0; i < nr; i++) {
+ if (load_numa_node(&tp->nodes[i], node_map->map[i])) {
+ numa_topology__delete(tp);
+ tp = NULL;
+ break;
+ }
+ }
+
+out:
+ free(buf);
+ fclose(fp);
+ cpu_map__put(node_map);
+ return tp;
+}
+
+void numa_topology__delete(struct numa_topology *tp)
+{
+ u32 i;
+
+ for (i = 0; i < tp->nr; i++)
+ free(tp->nodes[i].cpus);
+
+ free(tp);
+}
diff --git a/tools/perf/util/cputopo.h b/tools/perf/util/cputopo.h
index 4b5f4112b6f8..47a97e71acdf 100644
--- a/tools/perf/util/cputopo.h
+++ b/tools/perf/util/cputopo.h
@@ -3,6 +3,7 @@
#define __PERF_CPUTOPO_H
#include <linux/types.h>
+#include "env.h"
struct cpu_topology {
u32 core_sib;
@@ -11,7 +12,22 @@ struct cpu_topology {
char **thread_siblings;
};
+struct numa_topology_node {
+ char *cpus;
+ u32 node;
+ u64 mem_total;
+ u64 mem_free;
+};
+
+struct numa_topology {
+ u32 nr;
+ struct numa_topology_node nodes[0];
+};
+
struct cpu_topology *cpu_topology__new(void);
void cpu_topology__delete(struct cpu_topology *tp);
+struct numa_topology *numa_topology__new(void);
+void numa_topology__delete(struct numa_topology *tp);
+
#endif /* __PERF_CPUTOPO_H */
--git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 80ac57e6d38f..a2323d777dae 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -639,112 +639,45 @@ static int write_total_mem(struct feat_fd *ff,
return ret;
}
-static int write_topo_node(struct feat_fd *ff, int node)
-{
- char str[MAXPATHLEN];
- char field[32];
- char *buf = NULL, *p;
- size_t len = 0;
- FILE *fp;
- u64 mem_total, mem_free, mem;
- int ret = -1;
-
- sprintf(str, "/sys/devices/system/node/node%d/meminfo", node);
- fp = fopen(str, "r");
- if (!fp)
- return -1;
-
- while (getline(&buf, &len, fp) > 0) {
- /* skip over invalid lines */
- if (!strchr(buf, ':'))
- continue;
- if (sscanf(buf, "%*s %*d %31s %"PRIu64, field, &mem) != 2)
- goto done;
- if (!strcmp(field, "MemTotal:"))
- mem_total = mem;
- if (!strcmp(field, "MemFree:"))
- mem_free = mem;
- }
-
- fclose(fp);
- fp = NULL;
-
- ret = do_write(ff, &mem_total, sizeof(u64));
- if (ret)
- goto done;
-
- ret = do_write(ff, &mem_free, sizeof(u64));
- if (ret)
- goto done;
-
- ret = -1;
- sprintf(str, "/sys/devices/system/node/node%d/cpulist", node);
-
- fp = fopen(str, "r");
- if (!fp)
- goto done;
-
- if (getline(&buf, &len, fp) <= 0)
- goto done;
-
- p = strchr(buf, '\n');
- if (p)
- *p = '\0';
-
- ret = do_write_string(ff, buf);
-done:
- free(buf);
- if (fp)
- fclose(fp);
- return ret;
-}
-
static int write_numa_topology(struct feat_fd *ff,
struct perf_evlist *evlist __maybe_unused)
{
- char *buf = NULL;
- size_t len = 0;
- FILE *fp;
- struct cpu_map *node_map = NULL;
- char *c;
- u32 nr, i, j;
+ struct numa_topology *tp;
int ret = -1;
+ u32 i;
- fp = fopen("/sys/devices/system/node/online", "r");
- if (!fp)
- return -1;
+ tp = numa_topology__new();
+ if (!tp)
+ return -ENOMEM;
- if (getline(&buf, &len, fp) <= 0)
- goto done;
+ ret = do_write(ff, &tp->nr, sizeof(u32));
+ if (ret < 0)
+ goto err;
- c = strchr(buf, '\n');
- if (c)
- *c = '\0';
+ for (i = 0; i < tp->nr; i++) {
+ struct numa_topology_node *n = &tp->nodes[i];
- node_map = cpu_map__new(buf);
- if (!node_map)
- goto done;
-
- nr = (u32)node_map->nr;
+ ret = do_write(ff, &n->node, sizeof(u32));
+ if (ret < 0)
+ goto err;
- ret = do_write(ff, &nr, sizeof(nr));
- if (ret < 0)
- goto done;
+ ret = do_write(ff, &n->mem_total, sizeof(u64));
+ if (ret)
+ goto err;
- for (i = 0; i < nr; i++) {
- j = (u32)node_map->map[i];
- ret = do_write(ff, &j, sizeof(j));
- if (ret < 0)
- break;
+ ret = do_write(ff, &n->mem_free, sizeof(u64));
+ if (ret)
+ goto err;
- ret = write_topo_node(ff, j);
+ ret = do_write_string(ff, n->cpus);
if (ret < 0)
- break;
+ goto err;
}
-done:
- free(buf);
- fclose(fp);
- cpu_map__put(node_map);
+
+ ret = 0;
+
+err:
+ numa_topology__delete(tp);
return ret;
}
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 05/17] perf tools: Use sysfs__mountpoint() when reading cpu topology
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (3 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 04/17] perf tools: Add numa_topology object Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 06/17] perf report: Don't shadow inlined symbol with different addr range Arnaldo Carvalho de Melo
` (12 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
Use sysfs__mountpoint() when reading sysfs files to obtain cpu/numa
topologies.
Also use scnprintf instead of sprintf as suggested by Namhyung.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190219095815.15931-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/cputopo.c | 29 ++++++++++++++++++++++-------
1 file changed, 22 insertions(+), 7 deletions(-)
diff --git a/tools/perf/util/cputopo.c b/tools/perf/util/cputopo.c
index 83ffca2ea9ee..ece0710249d4 100644
--- a/tools/perf/util/cputopo.c
+++ b/tools/perf/util/cputopo.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <sys/param.h>
#include <inttypes.h>
+#include <api/fs/fs.h>
#include "cputopo.h"
#include "cpumap.h"
@@ -9,9 +10,15 @@
#define CORE_SIB_FMT \
- "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list"
+ "%s/devices/system/cpu/cpu%d/topology/core_siblings_list"
#define THRD_SIB_FMT \
- "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list"
+ "%s/devices/system/cpu/cpu%d/topology/thread_siblings_list"
+#define NODE_ONLINE_FMT \
+ "%s/devices/system/node/online"
+#define NODE_MEMINFO_FMT \
+ "%s/devices/system/node/node%d/meminfo"
+#define NODE_CPULIST_FMT \
+ "%s/devices/system/node/node%d/cpulist"
static int build_cpu_topology(struct cpu_topology *tp, int cpu)
{
@@ -23,7 +30,8 @@ static int build_cpu_topology(struct cpu_topology *tp, int cpu)
u32 i = 0;
int ret = -1;
- sprintf(filename, CORE_SIB_FMT, cpu);
+ scnprintf(filename, MAXPATHLEN, CORE_SIB_FMT,
+ sysfs__mountpoint(), cpu);
fp = fopen(filename, "r");
if (!fp)
goto try_threads;
@@ -50,7 +58,8 @@ static int build_cpu_topology(struct cpu_topology *tp, int cpu)
ret = 0;
try_threads:
- sprintf(filename, THRD_SIB_FMT, cpu);
+ scnprintf(filename, MAXPATHLEN, THRD_SIB_FMT,
+ sysfs__mountpoint(), cpu);
fp = fopen(filename, "r");
if (!fp)
goto done;
@@ -157,7 +166,8 @@ static int load_numa_node(struct numa_topology_node *node, int nr)
node->node = (u32) nr;
- sprintf(str, "/sys/devices/system/node/node%d/meminfo", nr);
+ scnprintf(str, MAXPATHLEN, NODE_MEMINFO_FMT,
+ sysfs__mountpoint(), nr);
fp = fopen(str, "r");
if (!fp)
return -1;
@@ -179,7 +189,8 @@ static int load_numa_node(struct numa_topology_node *node, int nr)
fclose(fp);
fp = NULL;
- sprintf(str, "/sys/devices/system/node/node%d/cpulist", nr);
+ scnprintf(str, MAXPATHLEN, NODE_CPULIST_FMT,
+ sysfs__mountpoint(), nr);
fp = fopen(str, "r");
if (!fp)
@@ -207,13 +218,17 @@ struct numa_topology *numa_topology__new(void)
{
struct cpu_map *node_map = NULL;
struct numa_topology *tp = NULL;
+ char path[MAXPATHLEN];
char *buf = NULL;
size_t len = 0;
u32 nr, i;
FILE *fp;
char *c;
- fp = fopen("/sys/devices/system/node/online", "r");
+ scnprintf(path, MAXPATHLEN, NODE_ONLINE_FMT,
+ sysfs__mountpoint());
+
+ fp = fopen(path, "r");
if (!fp)
return NULL;
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 06/17] perf report: Don't shadow inlined symbol with different addr range
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (4 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 05/17] perf tools: Use sysfs__mountpoint() when reading cpu topology Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 07/17] perf doc: Fix HEADER_CMDLINE description in perf.data documentation Arnaldo Carvalho de Melo
` (11 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, He Kuang, Alexander Shishkin, Milian Wolff,
Peter Zijlstra, Arnaldo Carvalho de Melo
From: He Kuang <hekuang@huawei.com>
We can't assume inlined symbols with the same name are equal, because
their address range may be different. This will cause the symbols with
different addresses be shadowed when adding to the hist entry, and lead
to ERANGE error when checking the symbol address during sample parse,
the addr should be within the range of [sym.start, sym.end].
The error message is like: "0x36aea60 [0x8]: failed to process type: 68".
The second parameter of symbol__new() is the length of the fake symbol
for the inline frame, which is the subtraction of the end and start
address of base_sym.
Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: aa441895f7b4 ("perf report: Compare symbol name for inlined frames when sorting")
Link: http://lkml.kernel.org/r/20190219130531.15692-1-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/sort.c | 10 ++++++++--
tools/perf/util/srcline.c | 2 +-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 2b6c1ccb878c..d2299e912e59 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -231,8 +231,14 @@ static int64_t _sort__sym_cmp(struct symbol *sym_l, struct symbol *sym_r)
if (sym_l == sym_r)
return 0;
- if (sym_l->inlined || sym_r->inlined)
- return strcmp(sym_l->name, sym_r->name);
+ if (sym_l->inlined || sym_r->inlined) {
+ int ret = strcmp(sym_l->name, sym_r->name);
+
+ if (ret)
+ return ret;
+ if ((sym_l->start <= sym_r->end) && (sym_l->end >= sym_r->start))
+ return 0;
+ }
if (sym_l->start != sym_r->start)
return (int64_t)(sym_r->start - sym_l->start);
diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index 00f215580b5a..10ca1533937e 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -104,7 +104,7 @@ static struct symbol *new_inline_sym(struct dso *dso,
} else {
/* create a fake symbol for the inline frame */
inline_sym = symbol__new(base_sym ? base_sym->start : 0,
- base_sym ? base_sym->end : 0,
+ base_sym ? (base_sym->end - base_sym->start) : 0,
base_sym ? base_sym->binding : 0,
base_sym ? base_sym->type : 0,
funcname);
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 07/17] perf doc: Fix HEADER_CMDLINE description in perf.data documentation
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (5 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 06/17] perf report: Don't shadow inlined symbol with different addr range Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 08/17] perf doc: Fix documentation of the Flags section in perf.data Arnaldo Carvalho de Melo
` (10 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Jonas Rabenstein, Alexander Shishkin,
Andi Kleen, Peter Zijlstra, Stephane Eranian, Thomas Richter,
Arnaldo Carvalho de Melo
From: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
The content of the HEADER_CMDLINE feature header is a perf_header_string_list
of the argument vector and not a perf_header_string of the commandline.
Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: http://lkml.kernel.org/r/20190219154515.3954-1-jonas.rabenstein@studium.uni-erlangen.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf.data-file-format.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt
index dfb218feaad9..5f9a3924830b 100644
--- a/tools/perf/Documentation/perf.data-file-format.txt
+++ b/tools/perf/Documentation/perf.data-file-format.txt
@@ -131,7 +131,7 @@ An uint64_t with the total memory in bytes.
HEADER_CMDLINE = 11,
-A perf_header_string with the perf command line used to collect the data.
+A perf_header_string_list with the perf arg-vector used to collect the data.
HEADER_EVENT_DESC = 12,
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 08/17] perf doc: Fix documentation of the Flags section in perf.data
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (6 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 07/17] perf doc: Fix HEADER_CMDLINE description in perf.data documentation Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 09/17] perf test: Fix failure of 'evsel-tp-sched' test on s390 Arnaldo Carvalho de Melo
` (9 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Jonas Rabenstein, Alexander Shishkin,
Andi Kleen, Peter Zijlstra, Stephane Eranian, Thomas Richter,
Arnaldo Carvalho de Melo
From: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
According to the current documentation the flags section is placed after
the file header itself but the code assumes to find the flags section
after the data section. This change updates the documentation to that
assumption.
Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: http://lkml.kernel.org/r/20190219154515.3954-2-jonas.rabenstein@studium.uni-erlangen.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf.data-file-format.txt | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt
index 5f9a3924830b..593ef49b273c 100644
--- a/tools/perf/Documentation/perf.data-file-format.txt
+++ b/tools/perf/Documentation/perf.data-file-format.txt
@@ -43,11 +43,10 @@ struct perf_file_section {
Flags section:
-The header is followed by different optional headers, described by the bits set
-in flags. Only headers for which the bit is set are included. Each header
-consists of a perf_file_section located after the initial header.
-The respective perf_file_section points to the data of the additional
-header and defines its size.
+For each of the optional features a perf_file_section it placed after the data
+section if the feature bit is set in the perf_header flags bitset. The
+respective perf_file_section points to the data of the additional header and
+defines its size.
Some headers consist of strings, which are defined like this:
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 09/17] perf test: Fix failure of 'evsel-tp-sched' test on s390
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (7 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 08/17] perf doc: Fix documentation of the Flags section in perf.data Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 10/17] perf bpf: Add bpf_map dumper Arnaldo Carvalho de Melo
` (8 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Thomas Richter, Heiko Carstens,
Hendrik Brueckner, Martin Schwidefsky, Arnaldo Carvalho de Melo
From: Thomas Richter <tmricht@linux.ibm.com>
Commit 489338a717a0 ("perf tests evsel-tp-sched: Fix bitwise operator")
causes test case 14 "Parse sched tracepoints fields" to fail on s390.
This test succeeds on x86.
In fact this test now fails on all architectures with type char treated
as type unsigned char.
The root cause is the signed-ness of character arrays in the tracepoints
sched_switch for structure members prev_comm and next_comm.
On s390 the output of:
[root@m35lp76 perf]# cat /sys/kernel/debug/tracing/events/sched/sched_switch/format
name: sched_switch
ID: 287
format:
field:unsigned short common_type; offset:0; size:2; signed:0;
...
field:char prev_comm[16]; offset:8; size:16; signed:0;
...
field:char next_comm[16]; offset:40; size:16; signed:0;
reveals the character arrays prev_comm and next_comm are per
default unsigned char and have values in the range of 0..255.
On x86 both fields are signed as this output shows:
[root@f29]# cat /sys/kernel/debug/tracing/events/sched/sched_switch/format
name: sched_switch
ID: 287
format:
field:unsigned short common_type; offset:0; size:2; signed:0;
...
field:char prev_comm[16]; offset:8; size:16; signed:1;
...
field:char next_comm[16]; offset:40; size:16; signed:1;
and the character arrays prev_comm and next_comm are per default signed
char and have values in the range of -1..127. The implementation of
type char is architecture specific.
Since the character arrays in both tracepoints sched_switch and
sched_wakeup should contain ascii characters, simply omit the check for
signedness in the test case.
Output before:
[root@m35lp76 perf]# ./perf test -F 14
14: Parse sched tracepoints fields :
--- start ---
sched:sched_switch: "prev_comm" signedness(0) is wrong, should be 1
sched:sched_switch: "next_comm" signedness(0) is wrong, should be 1
sched:sched_wakeup: "comm" signedness(0) is wrong, should be 1
---- end ----
14: Parse sched tracepoints fields : FAILED!
[root@m35lp76 perf]#
Output after:
[root@m35lp76 perf]# ./perf test -Fv 14
14: Parse sched tracepoints fields :
--- start ---
---- end ----
Parse sched tracepoints fields: Ok
[root@m35lp76 perf]#
Fixes: 489338a717a0 ("perf tests evsel-tp-sched: Fix bitwise operator")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20190219153639.31267-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/tests/evsel-tp-sched.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c
index 5cbba70bcdd0..ea7acf403727 100644
--- a/tools/perf/tests/evsel-tp-sched.c
+++ b/tools/perf/tests/evsel-tp-sched.c
@@ -43,7 +43,7 @@ int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtes
return -1;
}
- if (perf_evsel__test_field(evsel, "prev_comm", 16, true))
+ if (perf_evsel__test_field(evsel, "prev_comm", 16, false))
ret = -1;
if (perf_evsel__test_field(evsel, "prev_pid", 4, true))
@@ -55,7 +55,7 @@ int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtes
if (perf_evsel__test_field(evsel, "prev_state", sizeof(long), true))
ret = -1;
- if (perf_evsel__test_field(evsel, "next_comm", 16, true))
+ if (perf_evsel__test_field(evsel, "next_comm", 16, false))
ret = -1;
if (perf_evsel__test_field(evsel, "next_pid", 4, true))
@@ -73,7 +73,7 @@ int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtes
return -1;
}
- if (perf_evsel__test_field(evsel, "comm", 16, true))
+ if (perf_evsel__test_field(evsel, "comm", 16, false))
ret = -1;
if (perf_evsel__test_field(evsel, "pid", 4, true))
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 10/17] perf bpf: Add bpf_map dumper
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (8 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 09/17] perf test: Fix failure of 'evsel-tp-sched' test on s390 Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 11/17] perf trace: Allow dumping a BPF map after setting up BPF events Arnaldo Carvalho de Melo
` (7 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Arnaldo Carvalho de Melo, Adrian Hunter,
Alexei Starovoitov, Daniel Borkmann, Martin KaFai Lau,
Yonghong Song
From: Arnaldo Carvalho de Melo <acme@redhat.com>
At some point I'll suggest moving this to libbpf, for now I'll
experiment with ways to dump BPF maps set by events in 'perf trace',
starting with a very basic dumper for the current very limited needs
of the augmented_raw_syscalls code: dumping booleans.
Having functions that apply to the map keys and values and do table
lookup in things like syscall id to string tables should come next.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Yonghong Song <yhs@fb.com>
Link: https://lkml.kernel.org/n/tip-lz14w0esqyt1333aon05jpwc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/Build | 1 +
tools/perf/util/bpf_map.c | 72 +++++++++++++++++++++++++++++++++++++++
tools/perf/util/bpf_map.h | 22 ++++++++++++
3 files changed, 95 insertions(+)
create mode 100644 tools/perf/util/bpf_map.c
create mode 100644 tools/perf/util/bpf_map.h
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 3008d49fa587..8dd3102301ea 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -115,6 +115,7 @@ perf-y += branch.o
perf-y += mem2node.o
perf-$(CONFIG_LIBBPF) += bpf-loader.o
+perf-$(CONFIG_LIBBPF) += bpf_map.o
perf-$(CONFIG_BPF_PROLOGUE) += bpf-prologue.o
perf-$(CONFIG_LIBELF) += symbol-elf.o
perf-$(CONFIG_LIBELF) += probe-file.o
diff --git a/tools/perf/util/bpf_map.c b/tools/perf/util/bpf_map.c
new file mode 100644
index 000000000000..eb853ca67cf4
--- /dev/null
+++ b/tools/perf/util/bpf_map.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
+
+#include "util/bpf_map.h"
+#include <bpf/bpf.h>
+#include <bpf/libbpf.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static bool bpf_map_def__is_per_cpu(const struct bpf_map_def *def)
+{
+ return def->type == BPF_MAP_TYPE_PERCPU_HASH ||
+ def->type == BPF_MAP_TYPE_PERCPU_ARRAY ||
+ def->type == BPF_MAP_TYPE_LRU_PERCPU_HASH ||
+ def->type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE;
+}
+
+static void *bpf_map_def__alloc_value(const struct bpf_map_def *def)
+{
+ if (bpf_map_def__is_per_cpu(def))
+ return malloc(round_up(def->value_size, 8) * sysconf(_SC_NPROCESSORS_CONF));
+
+ return malloc(def->value_size);
+}
+
+int bpf_map__fprintf(struct bpf_map *map, FILE *fp)
+{
+ const struct bpf_map_def *def = bpf_map__def(map);
+ void *prev_key = NULL, *key, *value;
+ int fd = bpf_map__fd(map), err;
+ int printed = 0;
+
+ if (fd < 0)
+ return fd;
+
+ if (IS_ERR(def))
+ return PTR_ERR(def);
+
+ err = -ENOMEM;
+ key = malloc(def->key_size);
+ if (key == NULL)
+ goto out;
+
+ value = bpf_map_def__alloc_value(def);
+ if (value == NULL)
+ goto out_free_key;
+
+ while ((err = bpf_map_get_next_key(fd, prev_key, key) == 0)) {
+ int intkey = *(int *)key;
+
+ if (!bpf_map_lookup_elem(fd, key, value)) {
+ bool boolval = *(bool *)value;
+ if (boolval)
+ printed += fprintf(fp, "[%d] = %d,\n", intkey, boolval);
+ } else {
+ printed += fprintf(fp, "[%d] = ERROR,\n", intkey);
+ }
+
+ prev_key = key;
+ }
+
+ if (err == ENOENT)
+ err = printed;
+
+ free(value);
+out_free_key:
+ free(key);
+out:
+ return err;
+}
diff --git a/tools/perf/util/bpf_map.h b/tools/perf/util/bpf_map.h
new file mode 100644
index 000000000000..d6abd5e47af8
--- /dev/null
+++ b/tools/perf/util/bpf_map.h
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
+#ifndef __PERF_BPF_MAP_H
+#define __PERF_BPF_MAP_H 1
+
+#include <stdio.h>
+#include <linux/compiler.h>
+struct bpf_map;
+
+#ifdef HAVE_LIBBPF_SUPPORT
+
+int bpf_map__fprintf(struct bpf_map *map, FILE *fp);
+
+#else
+
+static inline int bpf_map__fprintf(struct bpf_map *map __maybe_unused, FILE *fp __maybe_unused)
+{
+ return 0;
+}
+
+#endif // HAVE_LIBBPF_SUPPORT
+
+#endif // __PERF_BPF_MAP_H
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 11/17] perf trace: Allow dumping a BPF map after setting up BPF events
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (9 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 10/17] perf bpf: Add bpf_map dumper Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 12/17] perf session: Don't report zero period samples for slave events Arnaldo Carvalho de Melo
` (6 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Arnaldo Carvalho de Melo, Adrian Hunter,
Alexei Starovoitov, Daniel Borkmann, Martin KaFai Lau,
Yonghong Song
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Initial use case:
Dumping the maps setup by tools/perf/examples/bpf/augmented_raw_syscalls.c,
which so far are just booleans, showing just non-zeroed entries:
# cat ~/.perfconfig
[llvm]
dump-obj = true
clang-opt = -g
[trace]
#add_events = /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
add_events = /wb/augmented_raw_syscalls.o
$ date
Tue Feb 19 16:29:33 -03 2019
$ ls -la /wb/augmented_raw_syscalls.o
-rwxr-xr-x. 1 root root 14048 Jan 24 12:09 /wb/augmented_raw_syscalls.o
$ file /wb/augmented_raw_syscalls.o
/wb/augmented_raw_syscalls.o: ELF 64-bit LSB relocatable, eBPF, version 1 (SYSV), with debug_info, not stripped
$
# trace -e recvmmsg,sendmmsg --map-dump foobar
ERROR: BPF map "foobar" not found
# trace -e recvmmsg,sendmmsg --map-dump filtered_pids
ERROR: BPF map "filtered_pids" not found
# trace -e recvmmsg,sendmmsg --map-dump pids_filtered
[2583] = 1,
[2267] = 1,
^Z
[1]+ Stopped trace -e recvmmsg,sendmmsg --map-dump pids_filtered
# pidof trace
2267
# ps ax|grep gnome-terminal|grep -v grep
2583 ? Ssl 58:33 /usr/libexec/gnome-terminal-server
^C
# trace -e recvmmsg,sendmmsg --map-dump syscalls
[299] = 1,
[307] = 1,
^C
# grep x64_recvmmsg arch/x86/entry/syscalls/syscall_64.tbl
299 64 recvmmsg __x64_sys_recvmmsg
# grep x64_sendmmsg arch/x86/entry/syscalls/syscall_64.tbl
307 64 sendmmsg __x64_sys_sendmmsg
#
Next step probably will be something like 'perf stat's --interval-print and
--interval-clear.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Yonghong Song <yhs@fb.com>
Link: https://lkml.kernel.org/n/tip-ztxj25rtx37ixo9cfajt8ocy@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-trace.txt | 8 ++++++++
tools/perf/builtin-trace.c | 19 +++++++++++++++++++
2 files changed, 27 insertions(+)
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index 631e687be4eb..fc6e43262c41 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -210,6 +210,14 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
may happen, for instance, when a thread gets migrated to a different CPU
while processing a syscall.
+--map-dump::
+ Dump BPF maps setup by events passed via -e, for instance the augmented_raw_syscalls
+ living in tools/perf/examples/bpf/augmented_raw_syscalls.c. For now this
+ dumps just boolean map values and integer keys, in time this will print in hex
+ by default and use BTF when available, as well as use functions to do pretty
+ printing using the existing 'perf trace' syscall arg beautifiers to map integer
+ arguments to strings (pid to comm, syscall id to syscall name, etc).
+
PAGEFAULTS
----------
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 68a01e624ad3..1a11fe656afc 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -19,6 +19,7 @@
#include <traceevent/event-parse.h>
#include <api/fs/tracing_path.h>
#include <bpf/bpf.h>
+#include "util/bpf_map.h"
#include "builtin.h"
#include "util/cgroup.h"
#include "util/color.h"
@@ -87,6 +88,9 @@ struct trace {
*augmented;
} events;
} syscalls;
+ struct {
+ struct bpf_map *map;
+ } dump;
struct record_opts opts;
struct perf_evlist *evlist;
struct machine *host;
@@ -2997,6 +3001,9 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
if (err < 0)
goto out_error_apply_filters;
+ if (trace->dump.map)
+ bpf_map__fprintf(trace->dump.map, trace->output);
+
err = perf_evlist__mmap(evlist, trace->opts.mmap_pages);
if (err < 0)
goto out_error_mmap;
@@ -3686,6 +3693,7 @@ int cmd_trace(int argc, const char **argv)
.max_stack = UINT_MAX,
.max_events = ULONG_MAX,
};
+ const char *map_dump_str = NULL;
const char *output_name = NULL;
const struct option trace_options[] = {
OPT_CALLBACK('e', "event", &trace, "event",
@@ -3718,6 +3726,9 @@ int cmd_trace(int argc, const char **argv)
OPT_CALLBACK(0, "duration", &trace, "float",
"show only events with duration > N.M ms",
trace__set_duration),
+#ifdef HAVE_LIBBPF_SUPPORT
+ OPT_STRING(0, "map-dump", &map_dump_str, "BPF map", "BPF map to periodically dump"),
+#endif
OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
OPT_INCR('v', "verbose", &verbose, "be more verbose"),
OPT_BOOLEAN('T', "time", &trace.full_time,
@@ -3812,6 +3823,14 @@ int cmd_trace(int argc, const char **argv)
err = -1;
+ if (map_dump_str) {
+ trace.dump.map = bpf__find_map_by_name(map_dump_str);
+ if (trace.dump.map == NULL) {
+ pr_err("ERROR: BPF map \"%s\" not found\n", map_dump_str);
+ goto out;
+ }
+ }
+
if (trace.trace_pgfaults) {
trace.opts.sample_address = true;
trace.opts.sample_time = true;
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 12/17] perf session: Don't report zero period samples for slave events
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (10 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 11/17] perf trace: Allow dumping a BPF map after setting up BPF events Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 13/17] perf evsel: Force sample_type " Arnaldo Carvalho de Melo
` (5 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Andi Kleen, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
There's no reason to deliver a sample with zero period. It means there
was no value for slave event since its last group leader sample.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190220122800.864-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/session.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 18fb9c8cbf9c..c764bbc91009 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1202,6 +1202,13 @@ static int deliver_sample_value(struct perf_evlist *evlist,
return 0;
}
+ /*
+ * There's no reason to deliver sample
+ * for zero period, bail out.
+ */
+ if (!sample->period)
+ return 0;
+
return tool->sample(tool, event, sample, sid->evsel, machine);
}
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 13/17] perf evsel: Force sample_type for slave events
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (11 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 12/17] perf session: Don't report zero period samples for slave events Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 14/17] perf script: Allow +- operator for type specific fields option Arnaldo Carvalho de Melo
` (4 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Andi Kleen, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
Force sample_type setup for slave events in group leader sessions.
We don't get sample for slave events, we make them when delivering group
leader sample. Set the slave event to follow the master sample_type to
ease up report.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190220122800.864-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/evsel.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 684c893ca6bc..dfe2958e6287 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -956,6 +956,14 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
attr->sample_freq = 0;
attr->sample_period = 0;
attr->write_backward = 0;
+
+ /*
+ * We don't get sample for slave events, we make them
+ * when delivering group leader sample. Set the slave
+ * event to follow the master sample_type to ease up
+ * report.
+ */
+ attr->sample_type = leader->attr.sample_type;
}
if (opts->no_samples)
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 14/17] perf script: Allow +- operator for type specific fields option
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (12 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 13/17] perf evsel: Force sample_type " Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 15/17] perf bpf-event: Add missing new line into pr_debug call Arnaldo Carvalho de Melo
` (3 subsequent siblings)
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Andi Kleen, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
Add support to add/remove fields for specific event types in -F option.
It's now possible to use '+-' after event type, like:
# cat > test.c
#include <stdio.h>
int main(void)
{
printf("Hello world\n");
while(1) {}
}
^D
# gcc -g -o test test.c
# perf probe -x test 'test.c:5'
# perf record -e '{cpu/cpu-cycles,period=10000/,probe_test:main}:S' ./test
...
# perf script -Ftrace:+period,-cpu
test 3859 396291.117343: 10275 cpu/cpu-cycles,period=10000/: 7f..
test 3859 396291.118234: 11041 cpu/cpu-cycles,period=10000/: ffffff..
test 3859 396291.118234: 1 probe_test:main:
test 3859 396291.118248: 8668 cpu/cpu-cycles,period=10000/: ffffff..
test 3859 396291.118263: 10139 cpu/cpu-cycles,period=10000/: ffffff..
Committer testing:
Couldn't make the test above work, but tested it with:
# perf probe -x hello main
Added new event:
probe_hello:main (on main in /home/acme/c/hello)
You can now use it in all perf tools, such as:
perf record -e probe_hello:main -aR sleep 1
# perf record -e probe_hello:main ./hello
hello, world
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.025 MB perf.data (1 samples) ]
# perf script
hello 21454 [002] 254116.874005: probe_hello:main: (401126)
#
# perf script -Ftrace:+period,-cpu
hello 21454 254116.874005: 1 probe_hello:main: (401126)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190220122800.864-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-script.txt | 6 ++++++
tools/perf/builtin-script.c | 8 ++++++++
2 files changed, 14 insertions(+)
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 9e4def08d569..2e19fd7ffe35 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -159,6 +159,12 @@ OPTIONS
the override, and the result of the above is that only S/W and H/W
events are displayed with the given fields.
+ It's possible tp add/remove fields only for specific event type:
+
+ -Fsw:-cpu,-period
+
+ removes cpu and period from software events.
+
For the 'wildcard' option if a user selected field is invalid for an
event type, a message is displayed to the user that the option is
ignored for that type. For example:
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 8d5fe092525c..373ea151dc60 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -2560,6 +2560,10 @@ static int parse_output_fields(const struct option *opt __maybe_unused,
pr_warning("Overriding previous field request for %s events.\n",
event_type(type));
+ /* Don't override defaults for +- */
+ if (strchr(tok, '+') || strchr(tok, '-'))
+ goto parse;
+
output[type].fields = 0;
output[type].user_set = true;
output[type].wildcard_set = false;
@@ -2644,6 +2648,10 @@ static int parse_output_fields(const struct option *opt __maybe_unused,
rc = -EINVAL;
goto out;
}
+ if (change == REMOVE)
+ output[type].fields &= ~all_output_options[i].field;
+ else
+ output[type].fields |= all_output_options[i].field;
output[type].user_set = true;
output[type].wildcard_set = true;
}
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 15/17] perf bpf-event: Add missing new line into pr_debug call
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (13 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 14/17] perf script: Allow +- operator for type specific fields option Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 7:12 ` Song Liu
2019-02-21 1:25 ` [PATCH 16/17] perf cpumap: Increase debug level for cpu_map__snprint verbose output Arnaldo Carvalho de Melo
` (2 subsequent siblings)
17 siblings, 1 reply; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Andi Kleen, Peter Zijlstra,
Song Liu, Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
Add a missing new line into pr_debug call in perf_event__synthesize_bpf_events(),
so that the error message does not screw the verbose output.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Link: http://lkml.kernel.org/r/20190220122800.864-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/bpf-event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c
index 62dda96b0096..028c8ec1f62a 100644
--- a/tools/perf/util/bpf-event.c
+++ b/tools/perf/util/bpf-event.c
@@ -233,7 +233,7 @@ int perf_event__synthesize_bpf_events(struct perf_tool *tool,
err = 0;
break;
}
- pr_debug("%s: can't get next program: %s%s",
+ pr_debug("%s: can't get next program: %s%s\n",
__func__, strerror(errno),
errno == EINVAL ? " -- kernel too old?" : "");
/* don't report error on old kernel or EPERM */
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* Re: [PATCH 15/17] perf bpf-event: Add missing new line into pr_debug call
2019-02-21 1:25 ` [PATCH 15/17] perf bpf-event: Add missing new line into pr_debug call Arnaldo Carvalho de Melo
@ 2019-02-21 7:12 ` Song Liu
0 siblings, 0 replies; 20+ messages in thread
From: Song Liu @ 2019-02-21 7:12 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo
Cc: Ingo Molnar, Jiri Olsa, Namhyung Kim, Clark Williams,
linux-kernel, linux-perf-users, Alexander Shishkin, Andi Kleen,
Peter Zijlstra, Arnaldo Carvalho de Melo
> On Feb 20, 2019, at 5:25 PM, Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
>
> From: Jiri Olsa <jolsa@kernel.org>
>
> Add a missing new line into pr_debug call in perf_event__synthesize_bpf_events(),
> so that the error message does not screw the verbose output.
>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Cc: Andi Kleen <ak@linux.intel.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Song Liu <songliubraving@fb.com>
> Link: http://lkml.kernel.org/r/20190220122800.864-5-jolsa@kernel.org
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Song Liu <songliubraving@fb.com>
Thanks for fixing this.
Song
> ---
> tools/perf/util/bpf-event.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c
> index 62dda96b0096..028c8ec1f62a 100644
> --- a/tools/perf/util/bpf-event.c
> +++ b/tools/perf/util/bpf-event.c
> @@ -233,7 +233,7 @@ int perf_event__synthesize_bpf_events(struct perf_tool *tool,
> err = 0;
> break;
> }
> - pr_debug("%s: can't get next program: %s%s",
> + pr_debug("%s: can't get next program: %s%s\n",
> __func__, strerror(errno),
> errno == EINVAL ? " -- kernel too old?" : "");
> /* don't report error on old kernel or EPERM */
> --
> 2.19.1
>
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH 16/17] perf cpumap: Increase debug level for cpu_map__snprint verbose output
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (14 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 15/17] perf bpf-event: Add missing new line into pr_debug call Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-21 1:25 ` [PATCH 17/17] perf tools: Make rm_rf() remove single file Arnaldo Carvalho de Melo
2019-02-28 7:28 ` [GIT PULL 00/17] perf/core improvements and fixes Ingo Molnar
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Andi Kleen, Peter Zijlstra,
Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
So it does not screw up single -v verbose output.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190220122800.864-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/cpumap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 0bbc3feb0894..0b599229bc7e 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -681,7 +681,7 @@ size_t cpu_map__snprint(struct cpu_map *map, char *buf, size_t size)
#undef COMMA
- pr_debug("cpumask list: %s\n", buf);
+ pr_debug2("cpumask list: %s\n", buf);
return ret;
}
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH 17/17] perf tools: Make rm_rf() remove single file
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (15 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 16/17] perf cpumap: Increase debug level for cpu_map__snprint verbose output Arnaldo Carvalho de Melo
@ 2019-02-21 1:25 ` Arnaldo Carvalho de Melo
2019-02-28 7:28 ` [GIT PULL 00/17] perf/core improvements and fixes Ingo Molnar
17 siblings, 0 replies; 20+ messages in thread
From: Arnaldo Carvalho de Melo @ 2019-02-21 1:25 UTC (permalink / raw)
To: Ingo Molnar
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, Alexander Shishkin, Alexey Budankov,
Andi Kleen, Peter Zijlstra, Arnaldo Carvalho de Melo
From: Jiri Olsa <jolsa@kernel.org>
Let rm_rf() remove a file if it's provided by path, not just
directories.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190220122800.864-7-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/util.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 320b0fef249a..3ee410fc047a 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -120,16 +120,26 @@ int mkdir_p(char *path, mode_t mode)
int rm_rf(const char *path)
{
DIR *dir;
- int ret = 0;
+ int ret;
struct dirent *d;
char namebuf[PATH_MAX];
+ struct stat statbuf;
+ /* Do not fail if there's no file. */
+ ret = lstat(path, &statbuf);
+ if (ret)
+ return 0;
+
+ /* Try to remove any file we get. */
+ if (!(statbuf.st_mode & S_IFDIR))
+ return unlink(path);
+
+ /* We have directory in path. */
dir = opendir(path);
if (dir == NULL)
- return 0;
+ return -1;
while ((d = readdir(dir)) != NULL && !ret) {
- struct stat statbuf;
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
--
2.19.1
^ permalink raw reply related [flat|nested] 20+ messages in thread* Re: [GIT PULL 00/17] perf/core improvements and fixes
2019-02-21 1:25 [GIT PULL 00/17] perf/core improvements and fixes Arnaldo Carvalho de Melo
` (16 preceding siblings ...)
2019-02-21 1:25 ` [PATCH 17/17] perf tools: Make rm_rf() remove single file Arnaldo Carvalho de Melo
@ 2019-02-28 7:28 ` Ingo Molnar
17 siblings, 0 replies; 20+ messages in thread
From: Ingo Molnar @ 2019-02-28 7:28 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo
Cc: Jiri Olsa, Namhyung Kim, Clark Williams, linux-kernel,
linux-perf-users, He Kuang, Jonas Rabenstein, Thomas Richter,
Tommi Rantala, Arnaldo Carvalho de Melo
* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
> Hi Ingo,
>
> Please consider pulling,
>
> - Arnaldo
>
> Test results at the end of this message, as usual.
>
> The following changes since commit 43f4e6279f05eefac058a3524e184cecae463bfe:
>
> Merge tag 'perf-core-for-mingo-5.1-20190214' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2019-02-15 10:19:11 +0100)
>
> are available in the Git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-5.1-20190220
>
> for you to fetch changes up to b4409ae112caa6315f6ee678e953b9fc93e6919c:
>
> perf tools: Make rm_rf() remove single file (2019-02-20 17:09:28 -0300)
>
> ----------------------------------------------------------------
> perf/core improvements and fixes:
>
> perf report:
>
> He Kuang:
>
> - Don't shadow inlined symbol with different addr range.
>
> perf script:
>
> Jiri Olsa:
>
> - Allow +- operator to ask for -F to add/remove fields to
> the default set, for instance to ask for the removal of the
> 'cpu' field in tracepoint events, adding 'period' to that
> kind of events, etc.
>
> perf test:
>
> Thomas Richter:
>
> - Fix scheduler tracepoint signedness of COMM fields failure of
> 'evsel-tp-sched' test on s390 and other arches.
>
> Tommi Rantala:
>
> - Skip trace+probe_vfs_getname.sh when 'perf trace' is not built.
>
> perf trace:
>
> Arnaldo Carvalho de Melo:
>
> - Add initial BPF map dumper, initially just for the current, minimal
> needs of the augmented_raw_syscalls BPF example used to collect
> pointer args payloads that uses BPF maps for pid and syscall filtering,
> but will in time have features similar to 'perf stat' --interval-print,
> --interval-clear, ways to signal from a BPF event that a specific
> map (or range of that map) should be printed, optionally as a
> histogram, etc.
>
> General:
>
> Jiri Olsa:
>
> - Add cpu and numa topologies classes for further reuse, fixing some
> issues in the process.
>
> - Fixup some warnings and debug levels.
>
> - Make rm_rf() remove single file, not just directories.
>
> Documentation:
>
> Jonas Rabenstein:
>
> - Fix HEADER_CMDLINE description in perf.data documentation.
>
> - Fix documentation of the Flags section in perf.data.
>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
>
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (2):
> perf bpf: Add bpf_map dumper
> perf trace: Allow dumping a BPF map after setting up BPF events
>
> He Kuang (1):
> perf report: Don't shadow inlined symbol with different addr range
>
> Jiri Olsa (10):
> perf header: Fix wrong node write in NUMA_TOPOLOGY feature
> perf tools: Add cpu_topology object
> perf tools: Add numa_topology object
> perf tools: Use sysfs__mountpoint() when reading cpu topology
> perf session: Don't report zero period samples for slave events
> perf evsel: Force sample_type for slave events
> perf script: Allow +- operator for type specific fields option
> perf bpf-event: Add missing new line into pr_debug call
> perf cpumap: Increase debug level for cpu_map__snprint verbose output
> perf tools: Make rm_rf() remove single file
>
> Jonas Rabenstein (2):
> perf doc: Fix HEADER_CMDLINE description in perf.data documentation
> perf doc: Fix documentation of the Flags section in perf.data
>
> Thomas Richter (1):
> perf test: Fix failure of 'evsel-tp-sched' test on s390
>
> Tommi Rantala (1):
> perf tests shell: Skip trace+probe_vfs_getname.sh if built without trace support
>
> tools/perf/Documentation/perf-script.txt | 6 +
> tools/perf/Documentation/perf-trace.txt | 8 +
> tools/perf/Documentation/perf.data-file-format.txt | 11 +-
> tools/perf/builtin-script.c | 8 +
> tools/perf/builtin-trace.c | 19 ++
> tools/perf/tests/evsel-tp-sched.c | 6 +-
> tools/perf/tests/shell/lib/probe.sh | 5 +
> tools/perf/tests/shell/trace+probe_vfs_getname.sh | 1 +
> tools/perf/util/Build | 2 +
> tools/perf/util/bpf-event.c | 2 +-
> tools/perf/util/bpf_map.c | 72 ++++++
> tools/perf/util/bpf_map.h | 22 ++
> tools/perf/util/cpumap.c | 2 +-
> tools/perf/util/cputopo.c | 277 +++++++++++++++++++++
> tools/perf/util/cputopo.h | 33 +++
> tools/perf/util/evsel.c | 8 +
> tools/perf/util/header.c | 269 +++-----------------
> tools/perf/util/session.c | 7 +
> tools/perf/util/sort.c | 10 +-
> tools/perf/util/srcline.c | 2 +-
> tools/perf/util/util.c | 16 +-
> 21 files changed, 530 insertions(+), 256 deletions(-)
> create mode 100644 tools/perf/util/bpf_map.c
> create mode 100644 tools/perf/util/bpf_map.h
> create mode 100644 tools/perf/util/cputopo.c
> create mode 100644 tools/perf/util/cputopo.h
Pulled, thanks a lot Arnaldo!
Ingo
^ permalink raw reply [flat|nested] 20+ messages in thread