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-rw-r--r--tools/arch/x86/include/asm/cpufeatures.h2
-rw-r--r--tools/build/Makefile.feature1
-rw-r--r--tools/build/feature/Makefile4
-rw-r--r--tools/build/feature/test-all.c5
-rw-r--r--tools/build/feature/test-get_current_dir_name.c10
-rw-r--r--tools/include/uapi/asm-generic/ioctls.h2
-rw-r--r--tools/include/uapi/drm/i915_drm.h22
-rw-r--r--tools/perf/Makefile.config5
-rw-r--r--tools/perf/tests/attr/base-record2
-rw-r--r--tools/perf/trace/beauty/ioctl.c1
-rw-r--r--tools/perf/util/Build1
-rw-r--r--tools/perf/util/evsel.c2
-rw-r--r--tools/perf/util/get_current_dir_name.c18
-rw-r--r--tools/perf/util/namespaces.c17
-rw-r--r--tools/perf/util/namespaces.h1
-rw-r--r--tools/perf/util/util.h4
16 files changed, 93 insertions, 4 deletions
diff --git a/tools/arch/x86/include/asm/cpufeatures.h b/tools/arch/x86/include/asm/cpufeatures.h
index 89a048c2faec..28c4a502b419 100644
--- a/tools/arch/x86/include/asm/cpufeatures.h
+++ b/tools/arch/x86/include/asm/cpufeatures.h
@@ -331,6 +331,8 @@
#define X86_FEATURE_LA57 (16*32+16) /* 5-level page tables */
#define X86_FEATURE_RDPID (16*32+22) /* RDPID instruction */
#define X86_FEATURE_CLDEMOTE (16*32+25) /* CLDEMOTE instruction */
+#define X86_FEATURE_MOVDIRI (16*32+27) /* MOVDIRI instruction */
+#define X86_FEATURE_MOVDIR64B (16*32+28) /* MOVDIR64B instruction */
/* AMD-defined CPU features, CPUID level 0x80000007 (EBX), word 17 */
#define X86_FEATURE_OVERFLOW_RECOV (17*32+ 0) /* MCA overflow recovery support */
diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index f216b2f5c3d7..d74bb9414d7c 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -33,6 +33,7 @@ FEATURE_TESTS_BASIC := \
dwarf_getlocations \
fortify-source \
sync-compare-and-swap \
+ get_current_dir_name \
glibc \
gtk2 \
gtk2-infobar \
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 0516259be70f..304b984f11b9 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -7,6 +7,7 @@ FILES= \
test-dwarf_getlocations.bin \
test-fortify-source.bin \
test-sync-compare-and-swap.bin \
+ test-get_current_dir_name.bin \
test-glibc.bin \
test-gtk2.bin \
test-gtk2-infobar.bin \
@@ -101,6 +102,9 @@ $(OUTPUT)test-bionic.bin:
$(OUTPUT)test-libelf.bin:
$(BUILD) -lelf
+$(OUTPUT)test-get_current_dir_name.bin:
+ $(BUILD)
+
$(OUTPUT)test-glibc.bin:
$(BUILD)
diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 8dc20a61341f..56722bfe6bdd 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -34,6 +34,10 @@
# include "test-libelf-mmap.c"
#undef main
+#define main main_test_get_current_dir_name
+# include "test-get_current_dir_name.c"
+#undef main
+
#define main main_test_glibc
# include "test-glibc.c"
#undef main
@@ -174,6 +178,7 @@ int main(int argc, char *argv[])
main_test_hello();
main_test_libelf();
main_test_libelf_mmap();
+ main_test_get_current_dir_name();
main_test_glibc();
main_test_dwarf();
main_test_dwarf_getlocations();
diff --git a/tools/build/feature/test-get_current_dir_name.c b/tools/build/feature/test-get_current_dir_name.c
new file mode 100644
index 000000000000..573000f93212
--- /dev/null
+++ b/tools/build/feature/test-get_current_dir_name.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <stdlib.h>
+
+int main(void)
+{
+ free(get_current_dir_name());
+ return 0;
+}
diff --git a/tools/include/uapi/asm-generic/ioctls.h b/tools/include/uapi/asm-generic/ioctls.h
index 040651735662..cdc9f4ca8c27 100644
--- a/tools/include/uapi/asm-generic/ioctls.h
+++ b/tools/include/uapi/asm-generic/ioctls.h
@@ -79,6 +79,8 @@
#define TIOCGPTLCK _IOR('T', 0x39, int) /* Get Pty lock state */
#define TIOCGEXCL _IOR('T', 0x40, int) /* Get exclusive mode state */
#define TIOCGPTPEER _IO('T', 0x41) /* Safely open the slave */
+#define TIOCGISO7816 _IOR('T', 0x42, struct serial_iso7816)
+#define TIOCSISO7816 _IOWR('T', 0x43, struct serial_iso7816)
#define FIONCLEX 0x5450
#define FIOCLEX 0x5451
diff --git a/tools/include/uapi/drm/i915_drm.h b/tools/include/uapi/drm/i915_drm.h
index 7f5634ce8e88..a4446f452040 100644
--- a/tools/include/uapi/drm/i915_drm.h
+++ b/tools/include/uapi/drm/i915_drm.h
@@ -529,6 +529,28 @@ typedef struct drm_i915_irq_wait {
*/
#define I915_PARAM_CS_TIMESTAMP_FREQUENCY 51
+/*
+ * Once upon a time we supposed that writes through the GGTT would be
+ * immediately in physical memory (once flushed out of the CPU path). However,
+ * on a few different processors and chipsets, this is not necessarily the case
+ * as the writes appear to be buffered internally. Thus a read of the backing
+ * storage (physical memory) via a different path (with different physical tags
+ * to the indirect write via the GGTT) will see stale values from before
+ * the GGTT write. Inside the kernel, we can for the most part keep track of
+ * the different read/write domains in use (e.g. set-domain), but the assumption
+ * of coherency is baked into the ABI, hence reporting its true state in this
+ * parameter.
+ *
+ * Reports true when writes via mmap_gtt are immediately visible following an
+ * lfence to flush the WCB.
+ *
+ * Reports false when writes via mmap_gtt are indeterminately delayed in an in
+ * internal buffer and are _not_ immediately visible to third parties accessing
+ * directly via mmap_cpu/mmap_wc. Use of mmap_gtt as part of an IPC
+ * communications channel when reporting false is strongly disadvised.
+ */
+#define I915_PARAM_MMAP_GTT_COHERENT 52
+
typedef struct drm_i915_getparam {
__s32 param;
/*
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index e30d20fb482d..a0e8c23f9125 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -299,6 +299,11 @@ ifndef NO_BIONIC
endif
endif
+ifeq ($(feature-get_current_dir_name), 1)
+ CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
+endif
+
+
ifdef NO_LIBELF
NO_DWARF := 1
NO_DEMANGLE := 1
diff --git a/tools/perf/tests/attr/base-record b/tools/perf/tests/attr/base-record
index 37940665f736..efd0157b9d22 100644
--- a/tools/perf/tests/attr/base-record
+++ b/tools/perf/tests/attr/base-record
@@ -9,7 +9,7 @@ size=112
config=0
sample_period=*
sample_type=263
-read_format=0
+read_format=0|4
disabled=1
inherit=1
pinned=0
diff --git a/tools/perf/trace/beauty/ioctl.c b/tools/perf/trace/beauty/ioctl.c
index 5d2a7fd8d407..eae59ad15ce3 100644
--- a/tools/perf/trace/beauty/ioctl.c
+++ b/tools/perf/trace/beauty/ioctl.c
@@ -31,6 +31,7 @@ static size_t ioctl__scnprintf_tty_cmd(int nr, int dir, char *bf, size_t size)
"TCSETSW2", "TCSETSF2", "TIOCGRS48", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK",
"TIOCGDEV", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG", "TIOCVHANGUP", "TIOCGPKT",
"TIOCGPTLCK", [_IOC_NR(TIOCGEXCL)] = "TIOCGEXCL", "TIOCGPTPEER",
+ "TIOCGISO7816", "TIOCSISO7816",
[_IOC_NR(FIONCLEX)] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG",
"TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS",
"TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI",
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index ecd9f9ceda77..b7bf201fe8a8 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -10,6 +10,7 @@ libperf-y += evlist.o
libperf-y += evsel.o
libperf-y += evsel_fprintf.o
libperf-y += find_bit.o
+libperf-y += get_current_dir_name.o
libperf-y += kallsyms.o
libperf-y += levenshtein.o
libperf-y += llvm-utils.o
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index d37bb1566cd9..dbc0466db368 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1092,7 +1092,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
attr->exclude_user = 1;
}
- if (evsel->own_cpus)
+ if (evsel->own_cpus || evsel->unit)
evsel->attr.read_format |= PERF_FORMAT_ID;
/*
diff --git a/tools/perf/util/get_current_dir_name.c b/tools/perf/util/get_current_dir_name.c
new file mode 100644
index 000000000000..267aa609a582
--- /dev/null
+++ b/tools/perf/util/get_current_dir_name.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+//
+#ifndef HAVE_GET_CURRENT_DIR_NAME
+#include "util.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdlib.h>
+
+/* Android's 'bionic' library, for one, doesn't have this */
+
+char *get_current_dir_name(void)
+{
+ char pwd[PATH_MAX];
+
+ return getcwd(pwd, sizeof(pwd)) == NULL ? NULL : strdup(pwd);
+}
+#endif // HAVE_GET_CURRENT_DIR_NAME
diff --git a/tools/perf/util/namespaces.c b/tools/perf/util/namespaces.c
index cf8bd123cf73..aed170bd4384 100644
--- a/tools/perf/util/namespaces.c
+++ b/tools/perf/util/namespaces.c
@@ -18,6 +18,7 @@
#include <stdio.h>
#include <string.h>
#include <unistd.h>
+#include <asm/bug.h>
struct namespaces *namespaces__new(struct namespaces_event *event)
{
@@ -186,6 +187,7 @@ void nsinfo__mountns_enter(struct nsinfo *nsi,
char curpath[PATH_MAX];
int oldns = -1;
int newns = -1;
+ char *oldcwd = NULL;
if (nc == NULL)
return;
@@ -199,9 +201,13 @@ void nsinfo__mountns_enter(struct nsinfo *nsi,
if (snprintf(curpath, PATH_MAX, "/proc/self/ns/mnt") >= PATH_MAX)
return;
+ oldcwd = get_current_dir_name();
+ if (!oldcwd)
+ return;
+
oldns = open(curpath, O_RDONLY);
if (oldns < 0)
- return;
+ goto errout;
newns = open(nsi->mntns_path, O_RDONLY);
if (newns < 0)
@@ -210,11 +216,13 @@ void nsinfo__mountns_enter(struct nsinfo *nsi,
if (setns(newns, CLONE_NEWNS) < 0)
goto errout;
+ nc->oldcwd = oldcwd;
nc->oldns = oldns;
nc->newns = newns;
return;
errout:
+ free(oldcwd);
if (oldns > -1)
close(oldns);
if (newns > -1)
@@ -223,11 +231,16 @@ errout:
void nsinfo__mountns_exit(struct nscookie *nc)
{
- if (nc == NULL || nc->oldns == -1 || nc->newns == -1)
+ if (nc == NULL || nc->oldns == -1 || nc->newns == -1 || !nc->oldcwd)
return;
setns(nc->oldns, CLONE_NEWNS);
+ if (nc->oldcwd) {
+ WARN_ON_ONCE(chdir(nc->oldcwd));
+ zfree(&nc->oldcwd);
+ }
+
if (nc->oldns > -1) {
close(nc->oldns);
nc->oldns = -1;
diff --git a/tools/perf/util/namespaces.h b/tools/perf/util/namespaces.h
index cae1a9a39722..d5f46c09ea31 100644
--- a/tools/perf/util/namespaces.h
+++ b/tools/perf/util/namespaces.h
@@ -38,6 +38,7 @@ struct nsinfo {
struct nscookie {
int oldns;
int newns;
+ char *oldcwd;
};
int nsinfo__init(struct nsinfo *nsi);
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 14508ee7707a..ece040b799f6 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -59,6 +59,10 @@ int fetch_kernel_version(unsigned int *puint,
const char *perf_tip(const char *dirpath);
+#ifndef HAVE_GET_CURRENT_DIR_NAME
+char *get_current_dir_name(void);
+#endif
+
#ifndef HAVE_SCHED_GETCPU_SUPPORT
int sched_getcpu(void);
#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.