* [PATCH v2 1/6] selftests: move dnotify_test from Documentation/filesystems
2016-09-13 20:18 [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Shuah Khan
@ 2016-09-13 20:18 ` Shuah Khan
2016-09-13 20:18 ` [PATCH v2 2/6] selftests: move prctl tests from Documentation/prctl Shuah Khan
` (5 subsequent siblings)
6 siblings, 0 replies; 11+ messages in thread
From: Shuah Khan @ 2016-09-13 20:18 UTC (permalink / raw)
To: corbet, richardcochran, wim, linux, nab, maheshkhanwalkar, timur,
arnd, ghackmann, ben, thuth, christopher.s.hall, john.stultz,
sergei.shtylyov, mpe, jani.nikula
Cc: Shuah Khan, linux-doc, linux-kernel, netdev, linux-watchdog,
linux-kselftest
Move dnotify_test.c, Makefile, and .gitignore from Documentation/filesystems
to selftests/filesystems.
Remove filesystems build target from Documentation/Makefile and update
selftests/filesystems/Makefile to work under selftests. dnotify_test will
not be run as part of selftests suite and will not be included in install
targets. It can be built separately for now.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/filesystems/.gitignore | 1 -
Documentation/filesystems/Makefile | 5 ----
Documentation/filesystems/dnotify_test.c | 34 ----------------------
tools/testing/selftests/filesystems/.gitignore | 1 +
tools/testing/selftests/filesystems/Makefile | 7 +++++
tools/testing/selftests/filesystems/dnotify_test.c | 34 ++++++++++++++++++++++
7 files changed, 43 insertions(+), 41 deletions(-)
delete mode 100644 Documentation/filesystems/.gitignore
delete mode 100644 Documentation/filesystems/Makefile
delete mode 100644 Documentation/filesystems/dnotify_test.c
create mode 100644 tools/testing/selftests/filesystems/.gitignore
create mode 100644 tools/testing/selftests/filesystems/Makefile
create mode 100644 tools/testing/selftests/filesystems/dnotify_test.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index de955e1..0473710 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,3 +1,3 @@
subdir-y := accounting auxdisplay blackfin \
- filesystems filesystems ia64 laptops mic misc-devices \
+ ia64 laptops mic misc-devices \
networking pcmcia prctl ptp timers vDSO watchdog
diff --git a/Documentation/filesystems/.gitignore b/Documentation/filesystems/.gitignore
deleted file mode 100644
index 31d6e42..0000000
--- a/Documentation/filesystems/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-dnotify_test
diff --git a/Documentation/filesystems/Makefile b/Documentation/filesystems/Makefile
deleted file mode 100644
index 883010c..0000000
--- a/Documentation/filesystems/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-# List of programs to build
-hostprogs-y := dnotify_test
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
diff --git a/Documentation/filesystems/dnotify_test.c b/Documentation/filesystems/dnotify_test.c
deleted file mode 100644
index 8b37b4a..0000000
--- a/Documentation/filesystems/dnotify_test.c
+++ /dev/null
@@ -1,34 +0,0 @@
-#define _GNU_SOURCE /* needed to get the defines */
-#include <fcntl.h> /* in glibc 2.2 this has the needed
- values defined */
-#include <signal.h>
-#include <stdio.h>
-#include <unistd.h>
-
-static volatile int event_fd;
-
-static void handler(int sig, siginfo_t *si, void *data)
-{
- event_fd = si->si_fd;
-}
-
-int main(void)
-{
- struct sigaction act;
- int fd;
-
- act.sa_sigaction = handler;
- sigemptyset(&act.sa_mask);
- act.sa_flags = SA_SIGINFO;
- sigaction(SIGRTMIN + 1, &act, NULL);
-
- fd = open(".", O_RDONLY);
- fcntl(fd, F_SETSIG, SIGRTMIN + 1);
- fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
- /* we will now be notified if any of the files
- in "." is modified or new files are created */
- while (1) {
- pause();
- printf("Got event on fd=%d\n", event_fd);
- }
-}
diff --git a/tools/testing/selftests/filesystems/.gitignore b/tools/testing/selftests/filesystems/.gitignore
new file mode 100644
index 0000000..31d6e42
--- /dev/null
+++ b/tools/testing/selftests/filesystems/.gitignore
@@ -0,0 +1 @@
+dnotify_test
diff --git a/tools/testing/selftests/filesystems/Makefile b/tools/testing/selftests/filesystems/Makefile
new file mode 100644
index 0000000..0ab1130
--- /dev/null
+++ b/tools/testing/selftests/filesystems/Makefile
@@ -0,0 +1,7 @@
+TEST_PROGS := dnotify_test
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+clean:
+ rm -fr $(TEST_PROGS)
diff --git a/tools/testing/selftests/filesystems/dnotify_test.c b/tools/testing/selftests/filesystems/dnotify_test.c
new file mode 100644
index 0000000..8b37b4a
--- /dev/null
+++ b/tools/testing/selftests/filesystems/dnotify_test.c
@@ -0,0 +1,34 @@
+#define _GNU_SOURCE /* needed to get the defines */
+#include <fcntl.h> /* in glibc 2.2 this has the needed
+ values defined */
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static volatile int event_fd;
+
+static void handler(int sig, siginfo_t *si, void *data)
+{
+ event_fd = si->si_fd;
+}
+
+int main(void)
+{
+ struct sigaction act;
+ int fd;
+
+ act.sa_sigaction = handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ sigaction(SIGRTMIN + 1, &act, NULL);
+
+ fd = open(".", O_RDONLY);
+ fcntl(fd, F_SETSIG, SIGRTMIN + 1);
+ fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
+ /* we will now be notified if any of the files
+ in "." is modified or new files are created */
+ while (1) {
+ pause();
+ printf("Got event on fd=%d\n", event_fd);
+ }
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH v2 2/6] selftests: move prctl tests from Documentation/prctl
2016-09-13 20:18 [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Shuah Khan
2016-09-13 20:18 ` [PATCH v2 1/6] selftests: move dnotify_test from Documentation/filesystems Shuah Khan
@ 2016-09-13 20:18 ` Shuah Khan
2016-09-13 20:18 ` [PATCH v2 3/6] selftests: move ptp tests from Documentation/ptp Shuah Khan
` (4 subsequent siblings)
6 siblings, 0 replies; 11+ messages in thread
From: Shuah Khan @ 2016-09-13 20:18 UTC (permalink / raw)
To: corbet, richardcochran, wim, linux, nab, maheshkhanwalkar, timur,
arnd, ghackmann, ben, thuth, christopher.s.hall, john.stultz,
sergei.shtylyov, mpe, jani.nikula
Cc: Shuah Khan, linux-doc, linux-kernel, netdev, linux-watchdog,
linux-kselftest
Move prctl tests from Documentation/prctl to selftests/prctl.
Remove prctl from Makefile to move the test. Update prctl Makefile to work
under selftests. prctl will not be run as part of selftests suite and will
not be included in install targets. They can be built separately for now.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/prctl/.gitignore | 3 -
Documentation/prctl/Makefile | 10 ---
.../prctl/disable-tsc-ctxt-sw-stress-test.c | 97 ----------------------
.../prctl/disable-tsc-on-off-stress-test.c | 96 ---------------------
Documentation/prctl/disable-tsc-test.c | 95 ---------------------
tools/testing/selftests/prctl/.gitignore | 3 +
tools/testing/selftests/prctl/Makefile | 15 ++++
.../prctl/disable-tsc-ctxt-sw-stress-test.c | 97 ++++++++++++++++++++++
.../prctl/disable-tsc-on-off-stress-test.c | 96 +++++++++++++++++++++
tools/testing/selftests/prctl/disable-tsc-test.c | 95 +++++++++++++++++++++
11 files changed, 307 insertions(+), 302 deletions(-)
delete mode 100644 Documentation/prctl/.gitignore
delete mode 100644 Documentation/prctl/Makefile
delete mode 100644 Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c
delete mode 100644 Documentation/prctl/disable-tsc-on-off-stress-test.c
delete mode 100644 Documentation/prctl/disable-tsc-test.c
create mode 100644 tools/testing/selftests/prctl/.gitignore
create mode 100644 tools/testing/selftests/prctl/Makefile
create mode 100644 tools/testing/selftests/prctl/disable-tsc-ctxt-sw-stress-test.c
create mode 100644 tools/testing/selftests/prctl/disable-tsc-on-off-stress-test.c
create mode 100644 tools/testing/selftests/prctl/disable-tsc-test.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 0473710..7a28f6c 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,3 +1,3 @@
subdir-y := accounting auxdisplay blackfin \
ia64 laptops mic misc-devices \
- networking pcmcia prctl ptp timers vDSO watchdog
+ networking pcmcia ptp timers vDSO watchdog
diff --git a/Documentation/prctl/.gitignore b/Documentation/prctl/.gitignore
deleted file mode 100644
index 0b5c274..0000000
--- a/Documentation/prctl/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-disable-tsc-ctxt-sw-stress-test
-disable-tsc-on-off-stress-test
-disable-tsc-test
diff --git a/Documentation/prctl/Makefile b/Documentation/prctl/Makefile
deleted file mode 100644
index 44de308..0000000
--- a/Documentation/prctl/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-ifndef CROSS_COMPILE
-# List of programs to build
-hostprogs-$(CONFIG_X86) := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
-
-HOSTCFLAGS_disable-tsc-ctxt-sw-stress-test.o += -I$(objtree)/usr/include
-HOSTCFLAGS_disable-tsc-on-off-stress-test.o += -I$(objtree)/usr/include
-HOSTCFLAGS_disable-tsc-test.o += -I$(objtree)/usr/include
-endif
diff --git a/Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c b/Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c
deleted file mode 100644
index f7499d1..0000000
--- a/Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...)
- *
- * Tests if the control register is updated correctly
- * at context switches
- *
- * Warning: this test will cause a very high load for a few seconds
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <signal.h>
-#include <inttypes.h>
-#include <wait.h>
-
-
-#include <sys/prctl.h>
-#include <linux/prctl.h>
-
-/* Get/set the process' ability to use the timestamp counter instruction */
-#ifndef PR_GET_TSC
-#define PR_GET_TSC 25
-#define PR_SET_TSC 26
-# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
-# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
-#endif
-
-static uint64_t rdtsc(void)
-{
-uint32_t lo, hi;
-/* We cannot use "=A", since this would use %rax on x86_64 */
-__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
-return (uint64_t)hi << 32 | lo;
-}
-
-static void sigsegv_expect(int sig)
-{
- /* */
-}
-
-static void segvtask(void)
-{
- if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0)
- {
- perror("prctl");
- exit(0);
- }
- signal(SIGSEGV, sigsegv_expect);
- alarm(10);
- rdtsc();
- fprintf(stderr, "FATAL ERROR, rdtsc() succeeded while disabled\n");
- exit(0);
-}
-
-
-static void sigsegv_fail(int sig)
-{
- fprintf(stderr, "FATAL ERROR, rdtsc() failed while enabled\n");
- exit(0);
-}
-
-static void rdtsctask(void)
-{
- if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0)
- {
- perror("prctl");
- exit(0);
- }
- signal(SIGSEGV, sigsegv_fail);
- alarm(10);
- for(;;) rdtsc();
-}
-
-
-int main(void)
-{
- int n_tasks = 100, i;
-
- fprintf(stderr, "[No further output means we're allright]\n");
-
- for (i=0; i<n_tasks; i++)
- if (fork() == 0)
- {
- if (i & 1)
- segvtask();
- else
- rdtsctask();
- }
-
- for (i=0; i<n_tasks; i++)
- wait(NULL);
-
- exit(0);
-}
-
diff --git a/Documentation/prctl/disable-tsc-on-off-stress-test.c b/Documentation/prctl/disable-tsc-on-off-stress-test.c
deleted file mode 100644
index a06f027..0000000
--- a/Documentation/prctl/disable-tsc-on-off-stress-test.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...)
- *
- * Tests if the control register is updated correctly
- * when set with prctl()
- *
- * Warning: this test will cause a very high load for a few seconds
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <signal.h>
-#include <inttypes.h>
-#include <wait.h>
-
-
-#include <sys/prctl.h>
-#include <linux/prctl.h>
-
-/* Get/set the process' ability to use the timestamp counter instruction */
-#ifndef PR_GET_TSC
-#define PR_GET_TSC 25
-#define PR_SET_TSC 26
-# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
-# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
-#endif
-
-/* snippet from wikipedia :-) */
-
-static uint64_t rdtsc(void)
-{
-uint32_t lo, hi;
-/* We cannot use "=A", since this would use %rax on x86_64 */
-__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
-return (uint64_t)hi << 32 | lo;
-}
-
-int should_segv = 0;
-
-static void sigsegv_cb(int sig)
-{
- if (!should_segv)
- {
- fprintf(stderr, "FATAL ERROR, rdtsc() failed while enabled\n");
- exit(0);
- }
- if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0)
- {
- perror("prctl");
- exit(0);
- }
- should_segv = 0;
-
- rdtsc();
-}
-
-static void task(void)
-{
- signal(SIGSEGV, sigsegv_cb);
- alarm(10);
- for(;;)
- {
- rdtsc();
- if (should_segv)
- {
- fprintf(stderr, "FATAL ERROR, rdtsc() succeeded while disabled\n");
- exit(0);
- }
- if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0)
- {
- perror("prctl");
- exit(0);
- }
- should_segv = 1;
- }
-}
-
-
-int main(void)
-{
- int n_tasks = 100, i;
-
- fprintf(stderr, "[No further output means we're allright]\n");
-
- for (i=0; i<n_tasks; i++)
- if (fork() == 0)
- task();
-
- for (i=0; i<n_tasks; i++)
- wait(NULL);
-
- exit(0);
-}
-
diff --git a/Documentation/prctl/disable-tsc-test.c b/Documentation/prctl/disable-tsc-test.c
deleted file mode 100644
index 8d494f7..0000000
--- a/Documentation/prctl/disable-tsc-test.c
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...)
- *
- * Basic test to test behaviour of PR_GET_TSC and PR_SET_TSC
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <signal.h>
-#include <inttypes.h>
-
-
-#include <sys/prctl.h>
-#include <linux/prctl.h>
-
-/* Get/set the process' ability to use the timestamp counter instruction */
-#ifndef PR_GET_TSC
-#define PR_GET_TSC 25
-#define PR_SET_TSC 26
-# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
-# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
-#endif
-
-const char *tsc_names[] =
-{
- [0] = "[not set]",
- [PR_TSC_ENABLE] = "PR_TSC_ENABLE",
- [PR_TSC_SIGSEGV] = "PR_TSC_SIGSEGV",
-};
-
-static uint64_t rdtsc(void)
-{
-uint32_t lo, hi;
-/* We cannot use "=A", since this would use %rax on x86_64 */
-__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
-return (uint64_t)hi << 32 | lo;
-}
-
-static void sigsegv_cb(int sig)
-{
- int tsc_val = 0;
-
- printf("[ SIG_SEGV ]\n");
- printf("prctl(PR_GET_TSC, &tsc_val); ");
- fflush(stdout);
-
- if ( prctl(PR_GET_TSC, &tsc_val) == -1)
- perror("prctl");
-
- printf("tsc_val == %s\n", tsc_names[tsc_val]);
- printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n");
- fflush(stdout);
- if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1)
- perror("prctl");
-
- printf("rdtsc() == ");
-}
-
-int main(void)
-{
- int tsc_val = 0;
-
- signal(SIGSEGV, sigsegv_cb);
-
- printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
- printf("prctl(PR_GET_TSC, &tsc_val); ");
- fflush(stdout);
-
- if ( prctl(PR_GET_TSC, &tsc_val) == -1)
- perror("prctl");
-
- printf("tsc_val == %s\n", tsc_names[tsc_val]);
- printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
- printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n");
- fflush(stdout);
-
- if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1)
- perror("prctl");
-
- printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
- printf("prctl(PR_SET_TSC, PR_TSC_SIGSEGV)\n");
- fflush(stdout);
-
- if ( prctl(PR_SET_TSC, PR_TSC_SIGSEGV) == -1)
- perror("prctl");
-
- printf("rdtsc() == ");
- fflush(stdout);
- printf("%llu\n", (unsigned long long)rdtsc());
- fflush(stdout);
-
- exit(EXIT_SUCCESS);
-}
-
diff --git a/tools/testing/selftests/prctl/.gitignore b/tools/testing/selftests/prctl/.gitignore
new file mode 100644
index 0000000..0b5c274
--- /dev/null
+++ b/tools/testing/selftests/prctl/.gitignore
@@ -0,0 +1,3 @@
+disable-tsc-ctxt-sw-stress-test
+disable-tsc-on-off-stress-test
+disable-tsc-test
diff --git a/tools/testing/selftests/prctl/Makefile b/tools/testing/selftests/prctl/Makefile
new file mode 100644
index 0000000..35aa1c8
--- /dev/null
+++ b/tools/testing/selftests/prctl/Makefile
@@ -0,0 +1,15 @@
+ifndef CROSS_COMPILE
+uname_M := $(shell uname -m 2>/dev/null || echo not)
+ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
+
+ifeq ($(ARCH),x86)
+TEST_PROGS := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test \
+ disable-tsc-test
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+clean:
+ rm -fr $(TEST_PROGS)
+endif
+endif
diff --git a/tools/testing/selftests/prctl/disable-tsc-ctxt-sw-stress-test.c b/tools/testing/selftests/prctl/disable-tsc-ctxt-sw-stress-test.c
new file mode 100644
index 0000000..f7499d1
--- /dev/null
+++ b/tools/testing/selftests/prctl/disable-tsc-ctxt-sw-stress-test.c
@@ -0,0 +1,97 @@
+/*
+ * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...)
+ *
+ * Tests if the control register is updated correctly
+ * at context switches
+ *
+ * Warning: this test will cause a very high load for a few seconds
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <inttypes.h>
+#include <wait.h>
+
+
+#include <sys/prctl.h>
+#include <linux/prctl.h>
+
+/* Get/set the process' ability to use the timestamp counter instruction */
+#ifndef PR_GET_TSC
+#define PR_GET_TSC 25
+#define PR_SET_TSC 26
+# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
+# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
+#endif
+
+static uint64_t rdtsc(void)
+{
+uint32_t lo, hi;
+/* We cannot use "=A", since this would use %rax on x86_64 */
+__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
+return (uint64_t)hi << 32 | lo;
+}
+
+static void sigsegv_expect(int sig)
+{
+ /* */
+}
+
+static void segvtask(void)
+{
+ if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0)
+ {
+ perror("prctl");
+ exit(0);
+ }
+ signal(SIGSEGV, sigsegv_expect);
+ alarm(10);
+ rdtsc();
+ fprintf(stderr, "FATAL ERROR, rdtsc() succeeded while disabled\n");
+ exit(0);
+}
+
+
+static void sigsegv_fail(int sig)
+{
+ fprintf(stderr, "FATAL ERROR, rdtsc() failed while enabled\n");
+ exit(0);
+}
+
+static void rdtsctask(void)
+{
+ if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0)
+ {
+ perror("prctl");
+ exit(0);
+ }
+ signal(SIGSEGV, sigsegv_fail);
+ alarm(10);
+ for(;;) rdtsc();
+}
+
+
+int main(void)
+{
+ int n_tasks = 100, i;
+
+ fprintf(stderr, "[No further output means we're allright]\n");
+
+ for (i=0; i<n_tasks; i++)
+ if (fork() == 0)
+ {
+ if (i & 1)
+ segvtask();
+ else
+ rdtsctask();
+ }
+
+ for (i=0; i<n_tasks; i++)
+ wait(NULL);
+
+ exit(0);
+}
+
diff --git a/tools/testing/selftests/prctl/disable-tsc-on-off-stress-test.c b/tools/testing/selftests/prctl/disable-tsc-on-off-stress-test.c
new file mode 100644
index 0000000..a06f027
--- /dev/null
+++ b/tools/testing/selftests/prctl/disable-tsc-on-off-stress-test.c
@@ -0,0 +1,96 @@
+/*
+ * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...)
+ *
+ * Tests if the control register is updated correctly
+ * when set with prctl()
+ *
+ * Warning: this test will cause a very high load for a few seconds
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <inttypes.h>
+#include <wait.h>
+
+
+#include <sys/prctl.h>
+#include <linux/prctl.h>
+
+/* Get/set the process' ability to use the timestamp counter instruction */
+#ifndef PR_GET_TSC
+#define PR_GET_TSC 25
+#define PR_SET_TSC 26
+# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
+# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
+#endif
+
+/* snippet from wikipedia :-) */
+
+static uint64_t rdtsc(void)
+{
+uint32_t lo, hi;
+/* We cannot use "=A", since this would use %rax on x86_64 */
+__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
+return (uint64_t)hi << 32 | lo;
+}
+
+int should_segv = 0;
+
+static void sigsegv_cb(int sig)
+{
+ if (!should_segv)
+ {
+ fprintf(stderr, "FATAL ERROR, rdtsc() failed while enabled\n");
+ exit(0);
+ }
+ if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0)
+ {
+ perror("prctl");
+ exit(0);
+ }
+ should_segv = 0;
+
+ rdtsc();
+}
+
+static void task(void)
+{
+ signal(SIGSEGV, sigsegv_cb);
+ alarm(10);
+ for(;;)
+ {
+ rdtsc();
+ if (should_segv)
+ {
+ fprintf(stderr, "FATAL ERROR, rdtsc() succeeded while disabled\n");
+ exit(0);
+ }
+ if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0)
+ {
+ perror("prctl");
+ exit(0);
+ }
+ should_segv = 1;
+ }
+}
+
+
+int main(void)
+{
+ int n_tasks = 100, i;
+
+ fprintf(stderr, "[No further output means we're allright]\n");
+
+ for (i=0; i<n_tasks; i++)
+ if (fork() == 0)
+ task();
+
+ for (i=0; i<n_tasks; i++)
+ wait(NULL);
+
+ exit(0);
+}
+
diff --git a/tools/testing/selftests/prctl/disable-tsc-test.c b/tools/testing/selftests/prctl/disable-tsc-test.c
new file mode 100644
index 0000000..8d494f7
--- /dev/null
+++ b/tools/testing/selftests/prctl/disable-tsc-test.c
@@ -0,0 +1,95 @@
+/*
+ * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...)
+ *
+ * Basic test to test behaviour of PR_GET_TSC and PR_SET_TSC
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <inttypes.h>
+
+
+#include <sys/prctl.h>
+#include <linux/prctl.h>
+
+/* Get/set the process' ability to use the timestamp counter instruction */
+#ifndef PR_GET_TSC
+#define PR_GET_TSC 25
+#define PR_SET_TSC 26
+# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
+# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
+#endif
+
+const char *tsc_names[] =
+{
+ [0] = "[not set]",
+ [PR_TSC_ENABLE] = "PR_TSC_ENABLE",
+ [PR_TSC_SIGSEGV] = "PR_TSC_SIGSEGV",
+};
+
+static uint64_t rdtsc(void)
+{
+uint32_t lo, hi;
+/* We cannot use "=A", since this would use %rax on x86_64 */
+__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
+return (uint64_t)hi << 32 | lo;
+}
+
+static void sigsegv_cb(int sig)
+{
+ int tsc_val = 0;
+
+ printf("[ SIG_SEGV ]\n");
+ printf("prctl(PR_GET_TSC, &tsc_val); ");
+ fflush(stdout);
+
+ if ( prctl(PR_GET_TSC, &tsc_val) == -1)
+ perror("prctl");
+
+ printf("tsc_val == %s\n", tsc_names[tsc_val]);
+ printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n");
+ fflush(stdout);
+ if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1)
+ perror("prctl");
+
+ printf("rdtsc() == ");
+}
+
+int main(void)
+{
+ int tsc_val = 0;
+
+ signal(SIGSEGV, sigsegv_cb);
+
+ printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
+ printf("prctl(PR_GET_TSC, &tsc_val); ");
+ fflush(stdout);
+
+ if ( prctl(PR_GET_TSC, &tsc_val) == -1)
+ perror("prctl");
+
+ printf("tsc_val == %s\n", tsc_names[tsc_val]);
+ printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
+ printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n");
+ fflush(stdout);
+
+ if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1)
+ perror("prctl");
+
+ printf("rdtsc() == %llu\n", (unsigned long long)rdtsc());
+ printf("prctl(PR_SET_TSC, PR_TSC_SIGSEGV)\n");
+ fflush(stdout);
+
+ if ( prctl(PR_SET_TSC, PR_TSC_SIGSEGV) == -1)
+ perror("prctl");
+
+ printf("rdtsc() == ");
+ fflush(stdout);
+ printf("%llu\n", (unsigned long long)rdtsc());
+ fflush(stdout);
+
+ exit(EXIT_SUCCESS);
+}
+
--
2.7.4
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH v2 3/6] selftests: move ptp tests from Documentation/ptp
2016-09-13 20:18 [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Shuah Khan
2016-09-13 20:18 ` [PATCH v2 1/6] selftests: move dnotify_test from Documentation/filesystems Shuah Khan
2016-09-13 20:18 ` [PATCH v2 2/6] selftests: move prctl tests from Documentation/prctl Shuah Khan
@ 2016-09-13 20:18 ` Shuah Khan
2016-09-13 20:18 ` [PATCH v2 4/6] selftests: move vDSO tests from Documentation/vDSO Shuah Khan
` (3 subsequent siblings)
6 siblings, 0 replies; 11+ messages in thread
From: Shuah Khan @ 2016-09-13 20:18 UTC (permalink / raw)
To: corbet, richardcochran, wim, linux, nab, maheshkhanwalkar, timur,
arnd, ghackmann, ben, thuth, christopher.s.hall, john.stultz,
sergei.shtylyov, mpe, jani.nikula
Cc: Shuah Khan, linux-doc, linux-kernel, netdev, linux-watchdog,
linux-kselftest
Remove ptp from Makefile to move the test to selftests. Update ptp Makefile
to work under selftests. ptp will not be run as part of selftests suite and
will not be included in install targets. They can be built separately for
now.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/ptp/.gitignore | 1 -
Documentation/ptp/Makefile | 8 -
Documentation/ptp/testptp.c | 523 ---------------------------------
Documentation/ptp/testptp.mk | 33 ---
tools/testing/selftests/ptp/.gitignore | 1 +
tools/testing/selftests/ptp/Makefile | 8 +
tools/testing/selftests/ptp/testptp.c | 523 +++++++++++++++++++++++++++++++++
tools/testing/selftests/ptp/testptp.mk | 33 +++
9 files changed, 566 insertions(+), 566 deletions(-)
delete mode 100644 Documentation/ptp/.gitignore
delete mode 100644 Documentation/ptp/Makefile
delete mode 100644 Documentation/ptp/testptp.c
delete mode 100644 Documentation/ptp/testptp.mk
create mode 100644 tools/testing/selftests/ptp/.gitignore
create mode 100644 tools/testing/selftests/ptp/Makefile
create mode 100644 tools/testing/selftests/ptp/testptp.c
create mode 100644 tools/testing/selftests/ptp/testptp.mk
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 7a28f6c..8cd6d1a 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,3 +1,3 @@
subdir-y := accounting auxdisplay blackfin \
ia64 laptops mic misc-devices \
- networking pcmcia ptp timers vDSO watchdog
+ networking pcmcia timers vDSO watchdog
diff --git a/Documentation/ptp/.gitignore b/Documentation/ptp/.gitignore
deleted file mode 100644
index f562e49..0000000
--- a/Documentation/ptp/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-testptp
diff --git a/Documentation/ptp/Makefile b/Documentation/ptp/Makefile
deleted file mode 100644
index 293d6c0..0000000
--- a/Documentation/ptp/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-# List of programs to build
-hostprogs-y := testptp
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
-
-HOSTCFLAGS_testptp.o += -I$(objtree)/usr/include
-HOSTLOADLIBES_testptp := -lrt
diff --git a/Documentation/ptp/testptp.c b/Documentation/ptp/testptp.c
deleted file mode 100644
index 5d2eae1..0000000
--- a/Documentation/ptp/testptp.c
+++ /dev/null
@@ -1,523 +0,0 @@
-/*
- * PTP 1588 clock support - User space test program
- *
- * Copyright (C) 2010 OMICRON electronics GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#define _GNU_SOURCE
-#define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <math.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/timex.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <linux/ptp_clock.h>
-
-#define DEVICE "/dev/ptp0"
-
-#ifndef ADJ_SETOFFSET
-#define ADJ_SETOFFSET 0x0100
-#endif
-
-#ifndef CLOCK_INVALID
-#define CLOCK_INVALID -1
-#endif
-
-/* clock_adjtime is not available in GLIBC < 2.14 */
-#if !__GLIBC_PREREQ(2, 14)
-#include <sys/syscall.h>
-static int clock_adjtime(clockid_t id, struct timex *tx)
-{
- return syscall(__NR_clock_adjtime, id, tx);
-}
-#endif
-
-static clockid_t get_clockid(int fd)
-{
-#define CLOCKFD 3
-#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD)
-
- return FD_TO_CLOCKID(fd);
-}
-
-static void handle_alarm(int s)
-{
- printf("received signal %d\n", s);
-}
-
-static int install_handler(int signum, void (*handler)(int))
-{
- struct sigaction action;
- sigset_t mask;
-
- /* Unblock the signal. */
- sigemptyset(&mask);
- sigaddset(&mask, signum);
- sigprocmask(SIG_UNBLOCK, &mask, NULL);
-
- /* Install the signal handler. */
- action.sa_handler = handler;
- action.sa_flags = 0;
- sigemptyset(&action.sa_mask);
- sigaction(signum, &action, NULL);
-
- return 0;
-}
-
-static long ppb_to_scaled_ppm(int ppb)
-{
- /*
- * The 'freq' field in the 'struct timex' is in parts per
- * million, but with a 16 bit binary fractional field.
- * Instead of calculating either one of
- *
- * scaled_ppm = (ppb / 1000) << 16 [1]
- * scaled_ppm = (ppb << 16) / 1000 [2]
- *
- * we simply use double precision math, in order to avoid the
- * truncation in [1] and the possible overflow in [2].
- */
- return (long) (ppb * 65.536);
-}
-
-static int64_t pctns(struct ptp_clock_time *t)
-{
- return t->sec * 1000000000LL + t->nsec;
-}
-
-static void usage(char *progname)
-{
- fprintf(stderr,
- "usage: %s [options]\n"
- " -a val request a one-shot alarm after 'val' seconds\n"
- " -A val request a periodic alarm every 'val' seconds\n"
- " -c query the ptp clock's capabilities\n"
- " -d name device to open\n"
- " -e val read 'val' external time stamp events\n"
- " -f val adjust the ptp clock frequency by 'val' ppb\n"
- " -g get the ptp clock time\n"
- " -h prints this message\n"
- " -i val index for event/trigger\n"
- " -k val measure the time offset between system and phc clock\n"
- " for 'val' times (Maximum 25)\n"
- " -l list the current pin configuration\n"
- " -L pin,val configure pin index 'pin' with function 'val'\n"
- " the channel index is taken from the '-i' option\n"
- " 'val' specifies the auxiliary function:\n"
- " 0 - none\n"
- " 1 - external time stamp\n"
- " 2 - periodic output\n"
- " -p val enable output with a period of 'val' nanoseconds\n"
- " -P val enable or disable (val=1|0) the system clock PPS\n"
- " -s set the ptp clock time from the system time\n"
- " -S set the system time from the ptp clock time\n"
- " -t val shift the ptp clock time by 'val' seconds\n"
- " -T val set the ptp clock time to 'val' seconds\n",
- progname);
-}
-
-int main(int argc, char *argv[])
-{
- struct ptp_clock_caps caps;
- struct ptp_extts_event event;
- struct ptp_extts_request extts_request;
- struct ptp_perout_request perout_request;
- struct ptp_pin_desc desc;
- struct timespec ts;
- struct timex tx;
-
- static timer_t timerid;
- struct itimerspec timeout;
- struct sigevent sigevent;
-
- struct ptp_clock_time *pct;
- struct ptp_sys_offset *sysoff;
-
-
- char *progname;
- unsigned int i;
- int c, cnt, fd;
-
- char *device = DEVICE;
- clockid_t clkid;
- int adjfreq = 0x7fffffff;
- int adjtime = 0;
- int capabilities = 0;
- int extts = 0;
- int gettime = 0;
- int index = 0;
- int list_pins = 0;
- int oneshot = 0;
- int pct_offset = 0;
- int n_samples = 0;
- int periodic = 0;
- int perout = -1;
- int pin_index = -1, pin_func;
- int pps = -1;
- int seconds = 0;
- int settime = 0;
-
- int64_t t1, t2, tp;
- int64_t interval, offset;
-
- progname = strrchr(argv[0], '/');
- progname = progname ? 1+progname : argv[0];
- while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
- switch (c) {
- case 'a':
- oneshot = atoi(optarg);
- break;
- case 'A':
- periodic = atoi(optarg);
- break;
- case 'c':
- capabilities = 1;
- break;
- case 'd':
- device = optarg;
- break;
- case 'e':
- extts = atoi(optarg);
- break;
- case 'f':
- adjfreq = atoi(optarg);
- break;
- case 'g':
- gettime = 1;
- break;
- case 'i':
- index = atoi(optarg);
- break;
- case 'k':
- pct_offset = 1;
- n_samples = atoi(optarg);
- break;
- case 'l':
- list_pins = 1;
- break;
- case 'L':
- cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func);
- if (cnt != 2) {
- usage(progname);
- return -1;
- }
- break;
- case 'p':
- perout = atoi(optarg);
- break;
- case 'P':
- pps = atoi(optarg);
- break;
- case 's':
- settime = 1;
- break;
- case 'S':
- settime = 2;
- break;
- case 't':
- adjtime = atoi(optarg);
- break;
- case 'T':
- settime = 3;
- seconds = atoi(optarg);
- break;
- case 'h':
- usage(progname);
- return 0;
- case '?':
- default:
- usage(progname);
- return -1;
- }
- }
-
- fd = open(device, O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
- return -1;
- }
-
- clkid = get_clockid(fd);
- if (CLOCK_INVALID == clkid) {
- fprintf(stderr, "failed to read clock id\n");
- return -1;
- }
-
- if (capabilities) {
- if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
- perror("PTP_CLOCK_GETCAPS");
- } else {
- printf("capabilities:\n"
- " %d maximum frequency adjustment (ppb)\n"
- " %d programmable alarms\n"
- " %d external time stamp channels\n"
- " %d programmable periodic signals\n"
- " %d pulse per second\n"
- " %d programmable pins\n"
- " %d cross timestamping\n",
- caps.max_adj,
- caps.n_alarm,
- caps.n_ext_ts,
- caps.n_per_out,
- caps.pps,
- caps.n_pins,
- caps.cross_timestamping);
- }
- }
-
- if (0x7fffffff != adjfreq) {
- memset(&tx, 0, sizeof(tx));
- tx.modes = ADJ_FREQUENCY;
- tx.freq = ppb_to_scaled_ppm(adjfreq);
- if (clock_adjtime(clkid, &tx)) {
- perror("clock_adjtime");
- } else {
- puts("frequency adjustment okay");
- }
- }
-
- if (adjtime) {
- memset(&tx, 0, sizeof(tx));
- tx.modes = ADJ_SETOFFSET;
- tx.time.tv_sec = adjtime;
- tx.time.tv_usec = 0;
- if (clock_adjtime(clkid, &tx) < 0) {
- perror("clock_adjtime");
- } else {
- puts("time shift okay");
- }
- }
-
- if (gettime) {
- if (clock_gettime(clkid, &ts)) {
- perror("clock_gettime");
- } else {
- printf("clock time: %ld.%09ld or %s",
- ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
- }
- }
-
- if (settime == 1) {
- clock_gettime(CLOCK_REALTIME, &ts);
- if (clock_settime(clkid, &ts)) {
- perror("clock_settime");
- } else {
- puts("set time okay");
- }
- }
-
- if (settime == 2) {
- clock_gettime(clkid, &ts);
- if (clock_settime(CLOCK_REALTIME, &ts)) {
- perror("clock_settime");
- } else {
- puts("set time okay");
- }
- }
-
- if (settime == 3) {
- ts.tv_sec = seconds;
- ts.tv_nsec = 0;
- if (clock_settime(clkid, &ts)) {
- perror("clock_settime");
- } else {
- puts("set time okay");
- }
- }
-
- if (extts) {
- memset(&extts_request, 0, sizeof(extts_request));
- extts_request.index = index;
- extts_request.flags = PTP_ENABLE_FEATURE;
- if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
- perror("PTP_EXTTS_REQUEST");
- extts = 0;
- } else {
- puts("external time stamp request okay");
- }
- for (; extts; extts--) {
- cnt = read(fd, &event, sizeof(event));
- if (cnt != sizeof(event)) {
- perror("read");
- break;
- }
- printf("event index %u at %lld.%09u\n", event.index,
- event.t.sec, event.t.nsec);
- fflush(stdout);
- }
- /* Disable the feature again. */
- extts_request.flags = 0;
- if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
- perror("PTP_EXTTS_REQUEST");
- }
- }
-
- if (list_pins) {
- int n_pins = 0;
- if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
- perror("PTP_CLOCK_GETCAPS");
- } else {
- n_pins = caps.n_pins;
- }
- for (i = 0; i < n_pins; i++) {
- desc.index = i;
- if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) {
- perror("PTP_PIN_GETFUNC");
- break;
- }
- printf("name %s index %u func %u chan %u\n",
- desc.name, desc.index, desc.func, desc.chan);
- }
- }
-
- if (oneshot) {
- install_handler(SIGALRM, handle_alarm);
- /* Create a timer. */
- sigevent.sigev_notify = SIGEV_SIGNAL;
- sigevent.sigev_signo = SIGALRM;
- if (timer_create(clkid, &sigevent, &timerid)) {
- perror("timer_create");
- return -1;
- }
- /* Start the timer. */
- memset(&timeout, 0, sizeof(timeout));
- timeout.it_value.tv_sec = oneshot;
- if (timer_settime(timerid, 0, &timeout, NULL)) {
- perror("timer_settime");
- return -1;
- }
- pause();
- timer_delete(timerid);
- }
-
- if (periodic) {
- install_handler(SIGALRM, handle_alarm);
- /* Create a timer. */
- sigevent.sigev_notify = SIGEV_SIGNAL;
- sigevent.sigev_signo = SIGALRM;
- if (timer_create(clkid, &sigevent, &timerid)) {
- perror("timer_create");
- return -1;
- }
- /* Start the timer. */
- memset(&timeout, 0, sizeof(timeout));
- timeout.it_interval.tv_sec = periodic;
- timeout.it_value.tv_sec = periodic;
- if (timer_settime(timerid, 0, &timeout, NULL)) {
- perror("timer_settime");
- return -1;
- }
- while (1) {
- pause();
- }
- timer_delete(timerid);
- }
-
- if (perout >= 0) {
- if (clock_gettime(clkid, &ts)) {
- perror("clock_gettime");
- return -1;
- }
- memset(&perout_request, 0, sizeof(perout_request));
- perout_request.index = index;
- perout_request.start.sec = ts.tv_sec + 2;
- perout_request.start.nsec = 0;
- perout_request.period.sec = 0;
- perout_request.period.nsec = perout;
- if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
- perror("PTP_PEROUT_REQUEST");
- } else {
- puts("periodic output request okay");
- }
- }
-
- if (pin_index >= 0) {
- memset(&desc, 0, sizeof(desc));
- desc.index = pin_index;
- desc.func = pin_func;
- desc.chan = index;
- if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) {
- perror("PTP_PIN_SETFUNC");
- } else {
- puts("set pin function okay");
- }
- }
-
- if (pps != -1) {
- int enable = pps ? 1 : 0;
- if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
- perror("PTP_ENABLE_PPS");
- } else {
- puts("pps for system time request okay");
- }
- }
-
- if (pct_offset) {
- if (n_samples <= 0 || n_samples > 25) {
- puts("n_samples should be between 1 and 25");
- usage(progname);
- return -1;
- }
-
- sysoff = calloc(1, sizeof(*sysoff));
- if (!sysoff) {
- perror("calloc");
- return -1;
- }
- sysoff->n_samples = n_samples;
-
- if (ioctl(fd, PTP_SYS_OFFSET, sysoff))
- perror("PTP_SYS_OFFSET");
- else
- puts("system and phc clock time offset request okay");
-
- pct = &sysoff->ts[0];
- for (i = 0; i < sysoff->n_samples; i++) {
- t1 = pctns(pct+2*i);
- tp = pctns(pct+2*i+1);
- t2 = pctns(pct+2*i+2);
- interval = t2 - t1;
- offset = (t2 + t1) / 2 - tp;
-
- printf("system time: %lld.%u\n",
- (pct+2*i)->sec, (pct+2*i)->nsec);
- printf("phc time: %lld.%u\n",
- (pct+2*i+1)->sec, (pct+2*i+1)->nsec);
- printf("system time: %lld.%u\n",
- (pct+2*i+2)->sec, (pct+2*i+2)->nsec);
- printf("system/phc clock time offset is %" PRId64 " ns\n"
- "system clock time delay is %" PRId64 " ns\n",
- offset, interval);
- }
-
- free(sysoff);
- }
-
- close(fd);
- return 0;
-}
diff --git a/Documentation/ptp/testptp.mk b/Documentation/ptp/testptp.mk
deleted file mode 100644
index 4ef2d97..0000000
--- a/Documentation/ptp/testptp.mk
+++ /dev/null
@@ -1,33 +0,0 @@
-# PTP 1588 clock support - User space test program
-#
-# Copyright (C) 2010 OMICRON electronics GmbH
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-CC = $(CROSS_COMPILE)gcc
-INC = -I$(KBUILD_OUTPUT)/usr/include
-CFLAGS = -Wall $(INC)
-LDLIBS = -lrt
-PROGS = testptp
-
-all: $(PROGS)
-
-testptp: testptp.o
-
-clean:
- rm -f testptp.o
-
-distclean: clean
- rm -f $(PROGS)
diff --git a/tools/testing/selftests/ptp/.gitignore b/tools/testing/selftests/ptp/.gitignore
new file mode 100644
index 0000000..f562e49
--- /dev/null
+++ b/tools/testing/selftests/ptp/.gitignore
@@ -0,0 +1 @@
+testptp
diff --git a/tools/testing/selftests/ptp/Makefile b/tools/testing/selftests/ptp/Makefile
new file mode 100644
index 0000000..83dd42b
--- /dev/null
+++ b/tools/testing/selftests/ptp/Makefile
@@ -0,0 +1,8 @@
+TEST_PROGS := testptp
+LDLIBS += -lrt
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+clean:
+ rm -fr $(TEST_PROGS)
diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c
new file mode 100644
index 0000000..5d2eae1
--- /dev/null
+++ b/tools/testing/selftests/ptp/testptp.c
@@ -0,0 +1,523 @@
+/*
+ * PTP 1588 clock support - User space test program
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <math.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/timex.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <linux/ptp_clock.h>
+
+#define DEVICE "/dev/ptp0"
+
+#ifndef ADJ_SETOFFSET
+#define ADJ_SETOFFSET 0x0100
+#endif
+
+#ifndef CLOCK_INVALID
+#define CLOCK_INVALID -1
+#endif
+
+/* clock_adjtime is not available in GLIBC < 2.14 */
+#if !__GLIBC_PREREQ(2, 14)
+#include <sys/syscall.h>
+static int clock_adjtime(clockid_t id, struct timex *tx)
+{
+ return syscall(__NR_clock_adjtime, id, tx);
+}
+#endif
+
+static clockid_t get_clockid(int fd)
+{
+#define CLOCKFD 3
+#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD)
+
+ return FD_TO_CLOCKID(fd);
+}
+
+static void handle_alarm(int s)
+{
+ printf("received signal %d\n", s);
+}
+
+static int install_handler(int signum, void (*handler)(int))
+{
+ struct sigaction action;
+ sigset_t mask;
+
+ /* Unblock the signal. */
+ sigemptyset(&mask);
+ sigaddset(&mask, signum);
+ sigprocmask(SIG_UNBLOCK, &mask, NULL);
+
+ /* Install the signal handler. */
+ action.sa_handler = handler;
+ action.sa_flags = 0;
+ sigemptyset(&action.sa_mask);
+ sigaction(signum, &action, NULL);
+
+ return 0;
+}
+
+static long ppb_to_scaled_ppm(int ppb)
+{
+ /*
+ * The 'freq' field in the 'struct timex' is in parts per
+ * million, but with a 16 bit binary fractional field.
+ * Instead of calculating either one of
+ *
+ * scaled_ppm = (ppb / 1000) << 16 [1]
+ * scaled_ppm = (ppb << 16) / 1000 [2]
+ *
+ * we simply use double precision math, in order to avoid the
+ * truncation in [1] and the possible overflow in [2].
+ */
+ return (long) (ppb * 65.536);
+}
+
+static int64_t pctns(struct ptp_clock_time *t)
+{
+ return t->sec * 1000000000LL + t->nsec;
+}
+
+static void usage(char *progname)
+{
+ fprintf(stderr,
+ "usage: %s [options]\n"
+ " -a val request a one-shot alarm after 'val' seconds\n"
+ " -A val request a periodic alarm every 'val' seconds\n"
+ " -c query the ptp clock's capabilities\n"
+ " -d name device to open\n"
+ " -e val read 'val' external time stamp events\n"
+ " -f val adjust the ptp clock frequency by 'val' ppb\n"
+ " -g get the ptp clock time\n"
+ " -h prints this message\n"
+ " -i val index for event/trigger\n"
+ " -k val measure the time offset between system and phc clock\n"
+ " for 'val' times (Maximum 25)\n"
+ " -l list the current pin configuration\n"
+ " -L pin,val configure pin index 'pin' with function 'val'\n"
+ " the channel index is taken from the '-i' option\n"
+ " 'val' specifies the auxiliary function:\n"
+ " 0 - none\n"
+ " 1 - external time stamp\n"
+ " 2 - periodic output\n"
+ " -p val enable output with a period of 'val' nanoseconds\n"
+ " -P val enable or disable (val=1|0) the system clock PPS\n"
+ " -s set the ptp clock time from the system time\n"
+ " -S set the system time from the ptp clock time\n"
+ " -t val shift the ptp clock time by 'val' seconds\n"
+ " -T val set the ptp clock time to 'val' seconds\n",
+ progname);
+}
+
+int main(int argc, char *argv[])
+{
+ struct ptp_clock_caps caps;
+ struct ptp_extts_event event;
+ struct ptp_extts_request extts_request;
+ struct ptp_perout_request perout_request;
+ struct ptp_pin_desc desc;
+ struct timespec ts;
+ struct timex tx;
+
+ static timer_t timerid;
+ struct itimerspec timeout;
+ struct sigevent sigevent;
+
+ struct ptp_clock_time *pct;
+ struct ptp_sys_offset *sysoff;
+
+
+ char *progname;
+ unsigned int i;
+ int c, cnt, fd;
+
+ char *device = DEVICE;
+ clockid_t clkid;
+ int adjfreq = 0x7fffffff;
+ int adjtime = 0;
+ int capabilities = 0;
+ int extts = 0;
+ int gettime = 0;
+ int index = 0;
+ int list_pins = 0;
+ int oneshot = 0;
+ int pct_offset = 0;
+ int n_samples = 0;
+ int periodic = 0;
+ int perout = -1;
+ int pin_index = -1, pin_func;
+ int pps = -1;
+ int seconds = 0;
+ int settime = 0;
+
+ int64_t t1, t2, tp;
+ int64_t interval, offset;
+
+ progname = strrchr(argv[0], '/');
+ progname = progname ? 1+progname : argv[0];
+ while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
+ switch (c) {
+ case 'a':
+ oneshot = atoi(optarg);
+ break;
+ case 'A':
+ periodic = atoi(optarg);
+ break;
+ case 'c':
+ capabilities = 1;
+ break;
+ case 'd':
+ device = optarg;
+ break;
+ case 'e':
+ extts = atoi(optarg);
+ break;
+ case 'f':
+ adjfreq = atoi(optarg);
+ break;
+ case 'g':
+ gettime = 1;
+ break;
+ case 'i':
+ index = atoi(optarg);
+ break;
+ case 'k':
+ pct_offset = 1;
+ n_samples = atoi(optarg);
+ break;
+ case 'l':
+ list_pins = 1;
+ break;
+ case 'L':
+ cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func);
+ if (cnt != 2) {
+ usage(progname);
+ return -1;
+ }
+ break;
+ case 'p':
+ perout = atoi(optarg);
+ break;
+ case 'P':
+ pps = atoi(optarg);
+ break;
+ case 's':
+ settime = 1;
+ break;
+ case 'S':
+ settime = 2;
+ break;
+ case 't':
+ adjtime = atoi(optarg);
+ break;
+ case 'T':
+ settime = 3;
+ seconds = atoi(optarg);
+ break;
+ case 'h':
+ usage(progname);
+ return 0;
+ case '?':
+ default:
+ usage(progname);
+ return -1;
+ }
+ }
+
+ fd = open(device, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
+ return -1;
+ }
+
+ clkid = get_clockid(fd);
+ if (CLOCK_INVALID == clkid) {
+ fprintf(stderr, "failed to read clock id\n");
+ return -1;
+ }
+
+ if (capabilities) {
+ if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
+ perror("PTP_CLOCK_GETCAPS");
+ } else {
+ printf("capabilities:\n"
+ " %d maximum frequency adjustment (ppb)\n"
+ " %d programmable alarms\n"
+ " %d external time stamp channels\n"
+ " %d programmable periodic signals\n"
+ " %d pulse per second\n"
+ " %d programmable pins\n"
+ " %d cross timestamping\n",
+ caps.max_adj,
+ caps.n_alarm,
+ caps.n_ext_ts,
+ caps.n_per_out,
+ caps.pps,
+ caps.n_pins,
+ caps.cross_timestamping);
+ }
+ }
+
+ if (0x7fffffff != adjfreq) {
+ memset(&tx, 0, sizeof(tx));
+ tx.modes = ADJ_FREQUENCY;
+ tx.freq = ppb_to_scaled_ppm(adjfreq);
+ if (clock_adjtime(clkid, &tx)) {
+ perror("clock_adjtime");
+ } else {
+ puts("frequency adjustment okay");
+ }
+ }
+
+ if (adjtime) {
+ memset(&tx, 0, sizeof(tx));
+ tx.modes = ADJ_SETOFFSET;
+ tx.time.tv_sec = adjtime;
+ tx.time.tv_usec = 0;
+ if (clock_adjtime(clkid, &tx) < 0) {
+ perror("clock_adjtime");
+ } else {
+ puts("time shift okay");
+ }
+ }
+
+ if (gettime) {
+ if (clock_gettime(clkid, &ts)) {
+ perror("clock_gettime");
+ } else {
+ printf("clock time: %ld.%09ld or %s",
+ ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
+ }
+ }
+
+ if (settime == 1) {
+ clock_gettime(CLOCK_REALTIME, &ts);
+ if (clock_settime(clkid, &ts)) {
+ perror("clock_settime");
+ } else {
+ puts("set time okay");
+ }
+ }
+
+ if (settime == 2) {
+ clock_gettime(clkid, &ts);
+ if (clock_settime(CLOCK_REALTIME, &ts)) {
+ perror("clock_settime");
+ } else {
+ puts("set time okay");
+ }
+ }
+
+ if (settime == 3) {
+ ts.tv_sec = seconds;
+ ts.tv_nsec = 0;
+ if (clock_settime(clkid, &ts)) {
+ perror("clock_settime");
+ } else {
+ puts("set time okay");
+ }
+ }
+
+ if (extts) {
+ memset(&extts_request, 0, sizeof(extts_request));
+ extts_request.index = index;
+ extts_request.flags = PTP_ENABLE_FEATURE;
+ if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
+ perror("PTP_EXTTS_REQUEST");
+ extts = 0;
+ } else {
+ puts("external time stamp request okay");
+ }
+ for (; extts; extts--) {
+ cnt = read(fd, &event, sizeof(event));
+ if (cnt != sizeof(event)) {
+ perror("read");
+ break;
+ }
+ printf("event index %u at %lld.%09u\n", event.index,
+ event.t.sec, event.t.nsec);
+ fflush(stdout);
+ }
+ /* Disable the feature again. */
+ extts_request.flags = 0;
+ if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
+ perror("PTP_EXTTS_REQUEST");
+ }
+ }
+
+ if (list_pins) {
+ int n_pins = 0;
+ if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
+ perror("PTP_CLOCK_GETCAPS");
+ } else {
+ n_pins = caps.n_pins;
+ }
+ for (i = 0; i < n_pins; i++) {
+ desc.index = i;
+ if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) {
+ perror("PTP_PIN_GETFUNC");
+ break;
+ }
+ printf("name %s index %u func %u chan %u\n",
+ desc.name, desc.index, desc.func, desc.chan);
+ }
+ }
+
+ if (oneshot) {
+ install_handler(SIGALRM, handle_alarm);
+ /* Create a timer. */
+ sigevent.sigev_notify = SIGEV_SIGNAL;
+ sigevent.sigev_signo = SIGALRM;
+ if (timer_create(clkid, &sigevent, &timerid)) {
+ perror("timer_create");
+ return -1;
+ }
+ /* Start the timer. */
+ memset(&timeout, 0, sizeof(timeout));
+ timeout.it_value.tv_sec = oneshot;
+ if (timer_settime(timerid, 0, &timeout, NULL)) {
+ perror("timer_settime");
+ return -1;
+ }
+ pause();
+ timer_delete(timerid);
+ }
+
+ if (periodic) {
+ install_handler(SIGALRM, handle_alarm);
+ /* Create a timer. */
+ sigevent.sigev_notify = SIGEV_SIGNAL;
+ sigevent.sigev_signo = SIGALRM;
+ if (timer_create(clkid, &sigevent, &timerid)) {
+ perror("timer_create");
+ return -1;
+ }
+ /* Start the timer. */
+ memset(&timeout, 0, sizeof(timeout));
+ timeout.it_interval.tv_sec = periodic;
+ timeout.it_value.tv_sec = periodic;
+ if (timer_settime(timerid, 0, &timeout, NULL)) {
+ perror("timer_settime");
+ return -1;
+ }
+ while (1) {
+ pause();
+ }
+ timer_delete(timerid);
+ }
+
+ if (perout >= 0) {
+ if (clock_gettime(clkid, &ts)) {
+ perror("clock_gettime");
+ return -1;
+ }
+ memset(&perout_request, 0, sizeof(perout_request));
+ perout_request.index = index;
+ perout_request.start.sec = ts.tv_sec + 2;
+ perout_request.start.nsec = 0;
+ perout_request.period.sec = 0;
+ perout_request.period.nsec = perout;
+ if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
+ perror("PTP_PEROUT_REQUEST");
+ } else {
+ puts("periodic output request okay");
+ }
+ }
+
+ if (pin_index >= 0) {
+ memset(&desc, 0, sizeof(desc));
+ desc.index = pin_index;
+ desc.func = pin_func;
+ desc.chan = index;
+ if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) {
+ perror("PTP_PIN_SETFUNC");
+ } else {
+ puts("set pin function okay");
+ }
+ }
+
+ if (pps != -1) {
+ int enable = pps ? 1 : 0;
+ if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
+ perror("PTP_ENABLE_PPS");
+ } else {
+ puts("pps for system time request okay");
+ }
+ }
+
+ if (pct_offset) {
+ if (n_samples <= 0 || n_samples > 25) {
+ puts("n_samples should be between 1 and 25");
+ usage(progname);
+ return -1;
+ }
+
+ sysoff = calloc(1, sizeof(*sysoff));
+ if (!sysoff) {
+ perror("calloc");
+ return -1;
+ }
+ sysoff->n_samples = n_samples;
+
+ if (ioctl(fd, PTP_SYS_OFFSET, sysoff))
+ perror("PTP_SYS_OFFSET");
+ else
+ puts("system and phc clock time offset request okay");
+
+ pct = &sysoff->ts[0];
+ for (i = 0; i < sysoff->n_samples; i++) {
+ t1 = pctns(pct+2*i);
+ tp = pctns(pct+2*i+1);
+ t2 = pctns(pct+2*i+2);
+ interval = t2 - t1;
+ offset = (t2 + t1) / 2 - tp;
+
+ printf("system time: %lld.%u\n",
+ (pct+2*i)->sec, (pct+2*i)->nsec);
+ printf("phc time: %lld.%u\n",
+ (pct+2*i+1)->sec, (pct+2*i+1)->nsec);
+ printf("system time: %lld.%u\n",
+ (pct+2*i+2)->sec, (pct+2*i+2)->nsec);
+ printf("system/phc clock time offset is %" PRId64 " ns\n"
+ "system clock time delay is %" PRId64 " ns\n",
+ offset, interval);
+ }
+
+ free(sysoff);
+ }
+
+ close(fd);
+ return 0;
+}
diff --git a/tools/testing/selftests/ptp/testptp.mk b/tools/testing/selftests/ptp/testptp.mk
new file mode 100644
index 0000000..4ef2d97
--- /dev/null
+++ b/tools/testing/selftests/ptp/testptp.mk
@@ -0,0 +1,33 @@
+# PTP 1588 clock support - User space test program
+#
+# Copyright (C) 2010 OMICRON electronics GmbH
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+CC = $(CROSS_COMPILE)gcc
+INC = -I$(KBUILD_OUTPUT)/usr/include
+CFLAGS = -Wall $(INC)
+LDLIBS = -lrt
+PROGS = testptp
+
+all: $(PROGS)
+
+testptp: testptp.o
+
+clean:
+ rm -f testptp.o
+
+distclean: clean
+ rm -f $(PROGS)
--
2.7.4
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH v2 4/6] selftests: move vDSO tests from Documentation/vDSO
2016-09-13 20:18 [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Shuah Khan
` (2 preceding siblings ...)
2016-09-13 20:18 ` [PATCH v2 3/6] selftests: move ptp tests from Documentation/ptp Shuah Khan
@ 2016-09-13 20:18 ` Shuah Khan
2016-09-13 20:18 ` [PATCH v2 5/6] selftests: move ia64 tests from Documentation/ia64 Shuah Khan
` (2 subsequent siblings)
6 siblings, 0 replies; 11+ messages in thread
From: Shuah Khan @ 2016-09-13 20:18 UTC (permalink / raw)
To: corbet, richardcochran, wim, linux, nab, maheshkhanwalkar, timur,
arnd, ghackmann, ben, thuth, christopher.s.hall, john.stultz,
sergei.shtylyov, mpe, jani.nikula
Cc: Shuah Khan, linux-doc, linux-kernel, netdev, linux-watchdog,
linux-kselftest
Remove vDSO from Makefile to move the to selftests. Update vDSO Makefile
to work under selftests. vDSO will not be run as part of selftests suite
and will not be included in install targets. They can be built separately
for now.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/vDSO/.gitignore | 2 -
Documentation/vDSO/Makefile | 17 --
Documentation/vDSO/parse_vdso.c | 269 ---------------------
Documentation/vDSO/vdso_standalone_test_x86.c | 128 ----------
Documentation/vDSO/vdso_test.c | 52 ----
tools/testing/selftests/vDSO/.gitignore | 2 +
tools/testing/selftests/vDSO/Makefile | 20 ++
tools/testing/selftests/vDSO/parse_vdso.c | 269 +++++++++++++++++++++
.../selftests/vDSO/vdso_standalone_test_x86.c | 128 ++++++++++
tools/testing/selftests/vDSO/vdso_test.c | 52 ++++
11 files changed, 472 insertions(+), 469 deletions(-)
delete mode 100644 Documentation/vDSO/.gitignore
delete mode 100644 Documentation/vDSO/Makefile
delete mode 100644 Documentation/vDSO/parse_vdso.c
delete mode 100644 Documentation/vDSO/vdso_standalone_test_x86.c
delete mode 100644 Documentation/vDSO/vdso_test.c
create mode 100644 tools/testing/selftests/vDSO/.gitignore
create mode 100644 tools/testing/selftests/vDSO/Makefile
create mode 100644 tools/testing/selftests/vDSO/parse_vdso.c
create mode 100644 tools/testing/selftests/vDSO/vdso_standalone_test_x86.c
create mode 100644 tools/testing/selftests/vDSO/vdso_test.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 8cd6d1a..085b917 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,3 +1,3 @@
subdir-y := accounting auxdisplay blackfin \
ia64 laptops mic misc-devices \
- networking pcmcia timers vDSO watchdog
+ networking pcmcia timers watchdog
diff --git a/Documentation/vDSO/.gitignore b/Documentation/vDSO/.gitignore
deleted file mode 100644
index 133bf9e..0000000
--- a/Documentation/vDSO/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-vdso_test
-vdso_standalone_test_x86
diff --git a/Documentation/vDSO/Makefile b/Documentation/vDSO/Makefile
deleted file mode 100644
index b12e987..0000000
--- a/Documentation/vDSO/Makefile
+++ /dev/null
@@ -1,17 +0,0 @@
-ifndef CROSS_COMPILE
-# vdso_test won't build for glibc < 2.16, so disable it
-# hostprogs-y := vdso_test
-hostprogs-$(CONFIG_X86) := vdso_standalone_test_x86
-vdso_standalone_test_x86-objs := vdso_standalone_test_x86.o parse_vdso.o
-vdso_test-objs := parse_vdso.o vdso_test.o
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
-
-HOSTCFLAGS := -I$(objtree)/usr/include -std=gnu99
-HOSTCFLAGS_vdso_standalone_test_x86.o := -fno-asynchronous-unwind-tables -fno-stack-protector
-HOSTLOADLIBES_vdso_standalone_test_x86 := -nostdlib
-ifeq ($(CONFIG_X86_32),y)
-HOSTLOADLIBES_vdso_standalone_test_x86 += -lgcc_s
-endif
-endif
diff --git a/Documentation/vDSO/parse_vdso.c b/Documentation/vDSO/parse_vdso.c
deleted file mode 100644
index 1dbb4b8..0000000
--- a/Documentation/vDSO/parse_vdso.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/*
- * parse_vdso.c: Linux reference vDSO parser
- * Written by Andrew Lutomirski, 2011-2014.
- *
- * This code is meant to be linked in to various programs that run on Linux.
- * As such, it is available with as few restrictions as possible. This file
- * is licensed under the Creative Commons Zero License, version 1.0,
- * available at http://creativecommons.org/publicdomain/zero/1.0/legalcode
- *
- * The vDSO is a regular ELF DSO that the kernel maps into user space when
- * it starts a program. It works equally well in statically and dynamically
- * linked binaries.
- *
- * This code is tested on x86. In principle it should work on any
- * architecture that has a vDSO.
- */
-
-#include <stdbool.h>
-#include <stdint.h>
-#include <string.h>
-#include <limits.h>
-#include <elf.h>
-
-/*
- * To use this vDSO parser, first call one of the vdso_init_* functions.
- * If you've already parsed auxv, then pass the value of AT_SYSINFO_EHDR
- * to vdso_init_from_sysinfo_ehdr. Otherwise pass auxv to vdso_init_from_auxv.
- * Then call vdso_sym for each symbol you want. For example, to look up
- * gettimeofday on x86_64, use:
- *
- * <some pointer> = vdso_sym("LINUX_2.6", "gettimeofday");
- * or
- * <some pointer> = vdso_sym("LINUX_2.6", "__vdso_gettimeofday");
- *
- * vdso_sym will return 0 if the symbol doesn't exist or if the init function
- * failed or was not called. vdso_sym is a little slow, so its return value
- * should be cached.
- *
- * vdso_sym is threadsafe; the init functions are not.
- *
- * These are the prototypes:
- */
-extern void vdso_init_from_auxv(void *auxv);
-extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
-extern void *vdso_sym(const char *version, const char *name);
-
-
-/* And here's the code. */
-#ifndef ELF_BITS
-# if ULONG_MAX > 0xffffffffUL
-# define ELF_BITS 64
-# else
-# define ELF_BITS 32
-# endif
-#endif
-
-#define ELF_BITS_XFORM2(bits, x) Elf##bits##_##x
-#define ELF_BITS_XFORM(bits, x) ELF_BITS_XFORM2(bits, x)
-#define ELF(x) ELF_BITS_XFORM(ELF_BITS, x)
-
-static struct vdso_info
-{
- bool valid;
-
- /* Load information */
- uintptr_t load_addr;
- uintptr_t load_offset; /* load_addr - recorded vaddr */
-
- /* Symbol table */
- ELF(Sym) *symtab;
- const char *symstrings;
- ELF(Word) *bucket, *chain;
- ELF(Word) nbucket, nchain;
-
- /* Version table */
- ELF(Versym) *versym;
- ELF(Verdef) *verdef;
-} vdso_info;
-
-/* Straight from the ELF specification. */
-static unsigned long elf_hash(const unsigned char *name)
-{
- unsigned long h = 0, g;
- while (*name)
- {
- h = (h << 4) + *name++;
- if (g = h & 0xf0000000)
- h ^= g >> 24;
- h &= ~g;
- }
- return h;
-}
-
-void vdso_init_from_sysinfo_ehdr(uintptr_t base)
-{
- size_t i;
- bool found_vaddr = false;
-
- vdso_info.valid = false;
-
- vdso_info.load_addr = base;
-
- ELF(Ehdr) *hdr = (ELF(Ehdr)*)base;
- if (hdr->e_ident[EI_CLASS] !=
- (ELF_BITS == 32 ? ELFCLASS32 : ELFCLASS64)) {
- return; /* Wrong ELF class -- check ELF_BITS */
- }
-
- ELF(Phdr) *pt = (ELF(Phdr)*)(vdso_info.load_addr + hdr->e_phoff);
- ELF(Dyn) *dyn = 0;
-
- /*
- * We need two things from the segment table: the load offset
- * and the dynamic table.
- */
- for (i = 0; i < hdr->e_phnum; i++)
- {
- if (pt[i].p_type == PT_LOAD && !found_vaddr) {
- found_vaddr = true;
- vdso_info.load_offset = base
- + (uintptr_t)pt[i].p_offset
- - (uintptr_t)pt[i].p_vaddr;
- } else if (pt[i].p_type == PT_DYNAMIC) {
- dyn = (ELF(Dyn)*)(base + pt[i].p_offset);
- }
- }
-
- if (!found_vaddr || !dyn)
- return; /* Failed */
-
- /*
- * Fish out the useful bits of the dynamic table.
- */
- ELF(Word) *hash = 0;
- vdso_info.symstrings = 0;
- vdso_info.symtab = 0;
- vdso_info.versym = 0;
- vdso_info.verdef = 0;
- for (i = 0; dyn[i].d_tag != DT_NULL; i++) {
- switch (dyn[i].d_tag) {
- case DT_STRTAB:
- vdso_info.symstrings = (const char *)
- ((uintptr_t)dyn[i].d_un.d_ptr
- + vdso_info.load_offset);
- break;
- case DT_SYMTAB:
- vdso_info.symtab = (ELF(Sym) *)
- ((uintptr_t)dyn[i].d_un.d_ptr
- + vdso_info.load_offset);
- break;
- case DT_HASH:
- hash = (ELF(Word) *)
- ((uintptr_t)dyn[i].d_un.d_ptr
- + vdso_info.load_offset);
- break;
- case DT_VERSYM:
- vdso_info.versym = (ELF(Versym) *)
- ((uintptr_t)dyn[i].d_un.d_ptr
- + vdso_info.load_offset);
- break;
- case DT_VERDEF:
- vdso_info.verdef = (ELF(Verdef) *)
- ((uintptr_t)dyn[i].d_un.d_ptr
- + vdso_info.load_offset);
- break;
- }
- }
- if (!vdso_info.symstrings || !vdso_info.symtab || !hash)
- return; /* Failed */
-
- if (!vdso_info.verdef)
- vdso_info.versym = 0;
-
- /* Parse the hash table header. */
- vdso_info.nbucket = hash[0];
- vdso_info.nchain = hash[1];
- vdso_info.bucket = &hash[2];
- vdso_info.chain = &hash[vdso_info.nbucket + 2];
-
- /* That's all we need. */
- vdso_info.valid = true;
-}
-
-static bool vdso_match_version(ELF(Versym) ver,
- const char *name, ELF(Word) hash)
-{
- /*
- * This is a helper function to check if the version indexed by
- * ver matches name (which hashes to hash).
- *
- * The version definition table is a mess, and I don't know how
- * to do this in better than linear time without allocating memory
- * to build an index. I also don't know why the table has
- * variable size entries in the first place.
- *
- * For added fun, I can't find a comprehensible specification of how
- * to parse all the weird flags in the table.
- *
- * So I just parse the whole table every time.
- */
-
- /* First step: find the version definition */
- ver &= 0x7fff; /* Apparently bit 15 means "hidden" */
- ELF(Verdef) *def = vdso_info.verdef;
- while(true) {
- if ((def->vd_flags & VER_FLG_BASE) == 0
- && (def->vd_ndx & 0x7fff) == ver)
- break;
-
- if (def->vd_next == 0)
- return false; /* No definition. */
-
- def = (ELF(Verdef) *)((char *)def + def->vd_next);
- }
-
- /* Now figure out whether it matches. */
- ELF(Verdaux) *aux = (ELF(Verdaux)*)((char *)def + def->vd_aux);
- return def->vd_hash == hash
- && !strcmp(name, vdso_info.symstrings + aux->vda_name);
-}
-
-void *vdso_sym(const char *version, const char *name)
-{
- unsigned long ver_hash;
- if (!vdso_info.valid)
- return 0;
-
- ver_hash = elf_hash(version);
- ELF(Word) chain = vdso_info.bucket[elf_hash(name) % vdso_info.nbucket];
-
- for (; chain != STN_UNDEF; chain = vdso_info.chain[chain]) {
- ELF(Sym) *sym = &vdso_info.symtab[chain];
-
- /* Check for a defined global or weak function w/ right name. */
- if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC)
- continue;
- if (ELF64_ST_BIND(sym->st_info) != STB_GLOBAL &&
- ELF64_ST_BIND(sym->st_info) != STB_WEAK)
- continue;
- if (sym->st_shndx == SHN_UNDEF)
- continue;
- if (strcmp(name, vdso_info.symstrings + sym->st_name))
- continue;
-
- /* Check symbol version. */
- if (vdso_info.versym
- && !vdso_match_version(vdso_info.versym[chain],
- version, ver_hash))
- continue;
-
- return (void *)(vdso_info.load_offset + sym->st_value);
- }
-
- return 0;
-}
-
-void vdso_init_from_auxv(void *auxv)
-{
- ELF(auxv_t) *elf_auxv = auxv;
- for (int i = 0; elf_auxv[i].a_type != AT_NULL; i++)
- {
- if (elf_auxv[i].a_type == AT_SYSINFO_EHDR) {
- vdso_init_from_sysinfo_ehdr(elf_auxv[i].a_un.a_val);
- return;
- }
- }
-
- vdso_info.valid = false;
-}
diff --git a/Documentation/vDSO/vdso_standalone_test_x86.c b/Documentation/vDSO/vdso_standalone_test_x86.c
deleted file mode 100644
index 93b0ebf..0000000
--- a/Documentation/vDSO/vdso_standalone_test_x86.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * vdso_test.c: Sample code to test parse_vdso.c on x86
- * Copyright (c) 2011-2014 Andy Lutomirski
- * Subject to the GNU General Public License, version 2
- *
- * You can amuse yourself by compiling with:
- * gcc -std=gnu99 -nostdlib
- * -Os -fno-asynchronous-unwind-tables -flto -lgcc_s
- * vdso_standalone_test_x86.c parse_vdso.c
- * to generate a small binary. On x86_64, you can omit -lgcc_s
- * if you want the binary to be completely standalone.
- */
-
-#include <sys/syscall.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <stdint.h>
-
-extern void *vdso_sym(const char *version, const char *name);
-extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
-extern void vdso_init_from_auxv(void *auxv);
-
-/* We need a libc functions... */
-int strcmp(const char *a, const char *b)
-{
- /* This implementation is buggy: it never returns -1. */
- while (*a || *b) {
- if (*a != *b)
- return 1;
- if (*a == 0 || *b == 0)
- return 1;
- a++;
- b++;
- }
-
- return 0;
-}
-
-/* ...and two syscalls. This is x86-specific. */
-static inline long x86_syscall3(long nr, long a0, long a1, long a2)
-{
- long ret;
-#ifdef __x86_64__
- asm volatile ("syscall" : "=a" (ret) : "a" (nr),
- "D" (a0), "S" (a1), "d" (a2) :
- "cc", "memory", "rcx",
- "r8", "r9", "r10", "r11" );
-#else
- asm volatile ("int $0x80" : "=a" (ret) : "a" (nr),
- "b" (a0), "c" (a1), "d" (a2) :
- "cc", "memory" );
-#endif
- return ret;
-}
-
-static inline long linux_write(int fd, const void *data, size_t len)
-{
- return x86_syscall3(__NR_write, fd, (long)data, (long)len);
-}
-
-static inline void linux_exit(int code)
-{
- x86_syscall3(__NR_exit, code, 0, 0);
-}
-
-void to_base10(char *lastdig, time_t n)
-{
- while (n) {
- *lastdig = (n % 10) + '0';
- n /= 10;
- lastdig--;
- }
-}
-
-__attribute__((externally_visible)) void c_main(void **stack)
-{
- /* Parse the stack */
- long argc = (long)*stack;
- stack += argc + 2;
-
- /* Now we're pointing at the environment. Skip it. */
- while(*stack)
- stack++;
- stack++;
-
- /* Now we're pointing at auxv. Initialize the vDSO parser. */
- vdso_init_from_auxv((void *)stack);
-
- /* Find gettimeofday. */
- typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz);
- gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday");
-
- if (!gtod)
- linux_exit(1);
-
- struct timeval tv;
- long ret = gtod(&tv, 0);
-
- if (ret == 0) {
- char buf[] = "The time is .000000\n";
- to_base10(buf + 31, tv.tv_sec);
- to_base10(buf + 38, tv.tv_usec);
- linux_write(1, buf, sizeof(buf) - 1);
- } else {
- linux_exit(ret);
- }
-
- linux_exit(0);
-}
-
-/*
- * This is the real entry point. It passes the initial stack into
- * the C entry point.
- */
-asm (
- ".text\n"
- ".global _start\n"
- ".type _start,@function\n"
- "_start:\n\t"
-#ifdef __x86_64__
- "mov %rsp,%rdi\n\t"
- "jmp c_main"
-#else
- "push %esp\n\t"
- "call c_main\n\t"
- "int $3"
-#endif
- );
diff --git a/Documentation/vDSO/vdso_test.c b/Documentation/vDSO/vdso_test.c
deleted file mode 100644
index 8daeb7d7..0000000
--- a/Documentation/vDSO/vdso_test.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * vdso_test.c: Sample code to test parse_vdso.c
- * Copyright (c) 2014 Andy Lutomirski
- * Subject to the GNU General Public License, version 2
- *
- * Compile with:
- * gcc -std=gnu99 vdso_test.c parse_vdso.c
- *
- * Tested on x86, 32-bit and 64-bit. It may work on other architectures, too.
- */
-
-#include <stdint.h>
-#include <elf.h>
-#include <stdio.h>
-#include <sys/auxv.h>
-#include <sys/time.h>
-
-extern void *vdso_sym(const char *version, const char *name);
-extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
-extern void vdso_init_from_auxv(void *auxv);
-
-int main(int argc, char **argv)
-{
- unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
- if (!sysinfo_ehdr) {
- printf("AT_SYSINFO_EHDR is not present!\n");
- return 0;
- }
-
- vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));
-
- /* Find gettimeofday. */
- typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz);
- gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday");
-
- if (!gtod) {
- printf("Could not find __vdso_gettimeofday\n");
- return 1;
- }
-
- struct timeval tv;
- long ret = gtod(&tv, 0);
-
- if (ret == 0) {
- printf("The time is %lld.%06lld\n",
- (long long)tv.tv_sec, (long long)tv.tv_usec);
- } else {
- printf("__vdso_gettimeofday failed\n");
- }
-
- return 0;
-}
diff --git a/tools/testing/selftests/vDSO/.gitignore b/tools/testing/selftests/vDSO/.gitignore
new file mode 100644
index 0000000..133bf9e
--- /dev/null
+++ b/tools/testing/selftests/vDSO/.gitignore
@@ -0,0 +1,2 @@
+vdso_test
+vdso_standalone_test_x86
diff --git a/tools/testing/selftests/vDSO/Makefile b/tools/testing/selftests/vDSO/Makefile
new file mode 100644
index 0000000..706b68b
--- /dev/null
+++ b/tools/testing/selftests/vDSO/Makefile
@@ -0,0 +1,20 @@
+ifndef CROSS_COMPILE
+CFLAGS := -std=gnu99
+CFLAGS_vdso_standalone_test_x86 := -nostdlib -fno-asynchronous-unwind-tables -fno-stack-protector
+ifeq ($(CONFIG_X86_32),y)
+LDLIBS += -lgcc_s
+endif
+
+TEST_PROGS := vdso_test vdso_standalone_test_x86
+
+all: $(TEST_PROGS)
+vdso_test: parse_vdso.c vdso_test.c
+vdso_standalone_test_x86: vdso_standalone_test_x86.c parse_vdso.c
+ $(CC) $(CFLAGS) $(CFLAGS_vdso_standalone_test_x86) \
+ vdso_standalone_test_x86.c parse_vdso.c \
+ -o vdso_standalone_test_x86
+
+include ../lib.mk
+clean:
+ rm -fr $(TEST_PROGS)
+endif
diff --git a/tools/testing/selftests/vDSO/parse_vdso.c b/tools/testing/selftests/vDSO/parse_vdso.c
new file mode 100644
index 0000000..1dbb4b8
--- /dev/null
+++ b/tools/testing/selftests/vDSO/parse_vdso.c
@@ -0,0 +1,269 @@
+/*
+ * parse_vdso.c: Linux reference vDSO parser
+ * Written by Andrew Lutomirski, 2011-2014.
+ *
+ * This code is meant to be linked in to various programs that run on Linux.
+ * As such, it is available with as few restrictions as possible. This file
+ * is licensed under the Creative Commons Zero License, version 1.0,
+ * available at http://creativecommons.org/publicdomain/zero/1.0/legalcode
+ *
+ * The vDSO is a regular ELF DSO that the kernel maps into user space when
+ * it starts a program. It works equally well in statically and dynamically
+ * linked binaries.
+ *
+ * This code is tested on x86. In principle it should work on any
+ * architecture that has a vDSO.
+ */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+#include <elf.h>
+
+/*
+ * To use this vDSO parser, first call one of the vdso_init_* functions.
+ * If you've already parsed auxv, then pass the value of AT_SYSINFO_EHDR
+ * to vdso_init_from_sysinfo_ehdr. Otherwise pass auxv to vdso_init_from_auxv.
+ * Then call vdso_sym for each symbol you want. For example, to look up
+ * gettimeofday on x86_64, use:
+ *
+ * <some pointer> = vdso_sym("LINUX_2.6", "gettimeofday");
+ * or
+ * <some pointer> = vdso_sym("LINUX_2.6", "__vdso_gettimeofday");
+ *
+ * vdso_sym will return 0 if the symbol doesn't exist or if the init function
+ * failed or was not called. vdso_sym is a little slow, so its return value
+ * should be cached.
+ *
+ * vdso_sym is threadsafe; the init functions are not.
+ *
+ * These are the prototypes:
+ */
+extern void vdso_init_from_auxv(void *auxv);
+extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
+extern void *vdso_sym(const char *version, const char *name);
+
+
+/* And here's the code. */
+#ifndef ELF_BITS
+# if ULONG_MAX > 0xffffffffUL
+# define ELF_BITS 64
+# else
+# define ELF_BITS 32
+# endif
+#endif
+
+#define ELF_BITS_XFORM2(bits, x) Elf##bits##_##x
+#define ELF_BITS_XFORM(bits, x) ELF_BITS_XFORM2(bits, x)
+#define ELF(x) ELF_BITS_XFORM(ELF_BITS, x)
+
+static struct vdso_info
+{
+ bool valid;
+
+ /* Load information */
+ uintptr_t load_addr;
+ uintptr_t load_offset; /* load_addr - recorded vaddr */
+
+ /* Symbol table */
+ ELF(Sym) *symtab;
+ const char *symstrings;
+ ELF(Word) *bucket, *chain;
+ ELF(Word) nbucket, nchain;
+
+ /* Version table */
+ ELF(Versym) *versym;
+ ELF(Verdef) *verdef;
+} vdso_info;
+
+/* Straight from the ELF specification. */
+static unsigned long elf_hash(const unsigned char *name)
+{
+ unsigned long h = 0, g;
+ while (*name)
+ {
+ h = (h << 4) + *name++;
+ if (g = h & 0xf0000000)
+ h ^= g >> 24;
+ h &= ~g;
+ }
+ return h;
+}
+
+void vdso_init_from_sysinfo_ehdr(uintptr_t base)
+{
+ size_t i;
+ bool found_vaddr = false;
+
+ vdso_info.valid = false;
+
+ vdso_info.load_addr = base;
+
+ ELF(Ehdr) *hdr = (ELF(Ehdr)*)base;
+ if (hdr->e_ident[EI_CLASS] !=
+ (ELF_BITS == 32 ? ELFCLASS32 : ELFCLASS64)) {
+ return; /* Wrong ELF class -- check ELF_BITS */
+ }
+
+ ELF(Phdr) *pt = (ELF(Phdr)*)(vdso_info.load_addr + hdr->e_phoff);
+ ELF(Dyn) *dyn = 0;
+
+ /*
+ * We need two things from the segment table: the load offset
+ * and the dynamic table.
+ */
+ for (i = 0; i < hdr->e_phnum; i++)
+ {
+ if (pt[i].p_type == PT_LOAD && !found_vaddr) {
+ found_vaddr = true;
+ vdso_info.load_offset = base
+ + (uintptr_t)pt[i].p_offset
+ - (uintptr_t)pt[i].p_vaddr;
+ } else if (pt[i].p_type == PT_DYNAMIC) {
+ dyn = (ELF(Dyn)*)(base + pt[i].p_offset);
+ }
+ }
+
+ if (!found_vaddr || !dyn)
+ return; /* Failed */
+
+ /*
+ * Fish out the useful bits of the dynamic table.
+ */
+ ELF(Word) *hash = 0;
+ vdso_info.symstrings = 0;
+ vdso_info.symtab = 0;
+ vdso_info.versym = 0;
+ vdso_info.verdef = 0;
+ for (i = 0; dyn[i].d_tag != DT_NULL; i++) {
+ switch (dyn[i].d_tag) {
+ case DT_STRTAB:
+ vdso_info.symstrings = (const char *)
+ ((uintptr_t)dyn[i].d_un.d_ptr
+ + vdso_info.load_offset);
+ break;
+ case DT_SYMTAB:
+ vdso_info.symtab = (ELF(Sym) *)
+ ((uintptr_t)dyn[i].d_un.d_ptr
+ + vdso_info.load_offset);
+ break;
+ case DT_HASH:
+ hash = (ELF(Word) *)
+ ((uintptr_t)dyn[i].d_un.d_ptr
+ + vdso_info.load_offset);
+ break;
+ case DT_VERSYM:
+ vdso_info.versym = (ELF(Versym) *)
+ ((uintptr_t)dyn[i].d_un.d_ptr
+ + vdso_info.load_offset);
+ break;
+ case DT_VERDEF:
+ vdso_info.verdef = (ELF(Verdef) *)
+ ((uintptr_t)dyn[i].d_un.d_ptr
+ + vdso_info.load_offset);
+ break;
+ }
+ }
+ if (!vdso_info.symstrings || !vdso_info.symtab || !hash)
+ return; /* Failed */
+
+ if (!vdso_info.verdef)
+ vdso_info.versym = 0;
+
+ /* Parse the hash table header. */
+ vdso_info.nbucket = hash[0];
+ vdso_info.nchain = hash[1];
+ vdso_info.bucket = &hash[2];
+ vdso_info.chain = &hash[vdso_info.nbucket + 2];
+
+ /* That's all we need. */
+ vdso_info.valid = true;
+}
+
+static bool vdso_match_version(ELF(Versym) ver,
+ const char *name, ELF(Word) hash)
+{
+ /*
+ * This is a helper function to check if the version indexed by
+ * ver matches name (which hashes to hash).
+ *
+ * The version definition table is a mess, and I don't know how
+ * to do this in better than linear time without allocating memory
+ * to build an index. I also don't know why the table has
+ * variable size entries in the first place.
+ *
+ * For added fun, I can't find a comprehensible specification of how
+ * to parse all the weird flags in the table.
+ *
+ * So I just parse the whole table every time.
+ */
+
+ /* First step: find the version definition */
+ ver &= 0x7fff; /* Apparently bit 15 means "hidden" */
+ ELF(Verdef) *def = vdso_info.verdef;
+ while(true) {
+ if ((def->vd_flags & VER_FLG_BASE) == 0
+ && (def->vd_ndx & 0x7fff) == ver)
+ break;
+
+ if (def->vd_next == 0)
+ return false; /* No definition. */
+
+ def = (ELF(Verdef) *)((char *)def + def->vd_next);
+ }
+
+ /* Now figure out whether it matches. */
+ ELF(Verdaux) *aux = (ELF(Verdaux)*)((char *)def + def->vd_aux);
+ return def->vd_hash == hash
+ && !strcmp(name, vdso_info.symstrings + aux->vda_name);
+}
+
+void *vdso_sym(const char *version, const char *name)
+{
+ unsigned long ver_hash;
+ if (!vdso_info.valid)
+ return 0;
+
+ ver_hash = elf_hash(version);
+ ELF(Word) chain = vdso_info.bucket[elf_hash(name) % vdso_info.nbucket];
+
+ for (; chain != STN_UNDEF; chain = vdso_info.chain[chain]) {
+ ELF(Sym) *sym = &vdso_info.symtab[chain];
+
+ /* Check for a defined global or weak function w/ right name. */
+ if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC)
+ continue;
+ if (ELF64_ST_BIND(sym->st_info) != STB_GLOBAL &&
+ ELF64_ST_BIND(sym->st_info) != STB_WEAK)
+ continue;
+ if (sym->st_shndx == SHN_UNDEF)
+ continue;
+ if (strcmp(name, vdso_info.symstrings + sym->st_name))
+ continue;
+
+ /* Check symbol version. */
+ if (vdso_info.versym
+ && !vdso_match_version(vdso_info.versym[chain],
+ version, ver_hash))
+ continue;
+
+ return (void *)(vdso_info.load_offset + sym->st_value);
+ }
+
+ return 0;
+}
+
+void vdso_init_from_auxv(void *auxv)
+{
+ ELF(auxv_t) *elf_auxv = auxv;
+ for (int i = 0; elf_auxv[i].a_type != AT_NULL; i++)
+ {
+ if (elf_auxv[i].a_type == AT_SYSINFO_EHDR) {
+ vdso_init_from_sysinfo_ehdr(elf_auxv[i].a_un.a_val);
+ return;
+ }
+ }
+
+ vdso_info.valid = false;
+}
diff --git a/tools/testing/selftests/vDSO/vdso_standalone_test_x86.c b/tools/testing/selftests/vDSO/vdso_standalone_test_x86.c
new file mode 100644
index 0000000..93b0ebf
--- /dev/null
+++ b/tools/testing/selftests/vDSO/vdso_standalone_test_x86.c
@@ -0,0 +1,128 @@
+/*
+ * vdso_test.c: Sample code to test parse_vdso.c on x86
+ * Copyright (c) 2011-2014 Andy Lutomirski
+ * Subject to the GNU General Public License, version 2
+ *
+ * You can amuse yourself by compiling with:
+ * gcc -std=gnu99 -nostdlib
+ * -Os -fno-asynchronous-unwind-tables -flto -lgcc_s
+ * vdso_standalone_test_x86.c parse_vdso.c
+ * to generate a small binary. On x86_64, you can omit -lgcc_s
+ * if you want the binary to be completely standalone.
+ */
+
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <stdint.h>
+
+extern void *vdso_sym(const char *version, const char *name);
+extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
+extern void vdso_init_from_auxv(void *auxv);
+
+/* We need a libc functions... */
+int strcmp(const char *a, const char *b)
+{
+ /* This implementation is buggy: it never returns -1. */
+ while (*a || *b) {
+ if (*a != *b)
+ return 1;
+ if (*a == 0 || *b == 0)
+ return 1;
+ a++;
+ b++;
+ }
+
+ return 0;
+}
+
+/* ...and two syscalls. This is x86-specific. */
+static inline long x86_syscall3(long nr, long a0, long a1, long a2)
+{
+ long ret;
+#ifdef __x86_64__
+ asm volatile ("syscall" : "=a" (ret) : "a" (nr),
+ "D" (a0), "S" (a1), "d" (a2) :
+ "cc", "memory", "rcx",
+ "r8", "r9", "r10", "r11" );
+#else
+ asm volatile ("int $0x80" : "=a" (ret) : "a" (nr),
+ "b" (a0), "c" (a1), "d" (a2) :
+ "cc", "memory" );
+#endif
+ return ret;
+}
+
+static inline long linux_write(int fd, const void *data, size_t len)
+{
+ return x86_syscall3(__NR_write, fd, (long)data, (long)len);
+}
+
+static inline void linux_exit(int code)
+{
+ x86_syscall3(__NR_exit, code, 0, 0);
+}
+
+void to_base10(char *lastdig, time_t n)
+{
+ while (n) {
+ *lastdig = (n % 10) + '0';
+ n /= 10;
+ lastdig--;
+ }
+}
+
+__attribute__((externally_visible)) void c_main(void **stack)
+{
+ /* Parse the stack */
+ long argc = (long)*stack;
+ stack += argc + 2;
+
+ /* Now we're pointing at the environment. Skip it. */
+ while(*stack)
+ stack++;
+ stack++;
+
+ /* Now we're pointing at auxv. Initialize the vDSO parser. */
+ vdso_init_from_auxv((void *)stack);
+
+ /* Find gettimeofday. */
+ typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz);
+ gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday");
+
+ if (!gtod)
+ linux_exit(1);
+
+ struct timeval tv;
+ long ret = gtod(&tv, 0);
+
+ if (ret == 0) {
+ char buf[] = "The time is .000000\n";
+ to_base10(buf + 31, tv.tv_sec);
+ to_base10(buf + 38, tv.tv_usec);
+ linux_write(1, buf, sizeof(buf) - 1);
+ } else {
+ linux_exit(ret);
+ }
+
+ linux_exit(0);
+}
+
+/*
+ * This is the real entry point. It passes the initial stack into
+ * the C entry point.
+ */
+asm (
+ ".text\n"
+ ".global _start\n"
+ ".type _start,@function\n"
+ "_start:\n\t"
+#ifdef __x86_64__
+ "mov %rsp,%rdi\n\t"
+ "jmp c_main"
+#else
+ "push %esp\n\t"
+ "call c_main\n\t"
+ "int $3"
+#endif
+ );
diff --git a/tools/testing/selftests/vDSO/vdso_test.c b/tools/testing/selftests/vDSO/vdso_test.c
new file mode 100644
index 0000000..8daeb7d7
--- /dev/null
+++ b/tools/testing/selftests/vDSO/vdso_test.c
@@ -0,0 +1,52 @@
+/*
+ * vdso_test.c: Sample code to test parse_vdso.c
+ * Copyright (c) 2014 Andy Lutomirski
+ * Subject to the GNU General Public License, version 2
+ *
+ * Compile with:
+ * gcc -std=gnu99 vdso_test.c parse_vdso.c
+ *
+ * Tested on x86, 32-bit and 64-bit. It may work on other architectures, too.
+ */
+
+#include <stdint.h>
+#include <elf.h>
+#include <stdio.h>
+#include <sys/auxv.h>
+#include <sys/time.h>
+
+extern void *vdso_sym(const char *version, const char *name);
+extern void vdso_init_from_sysinfo_ehdr(uintptr_t base);
+extern void vdso_init_from_auxv(void *auxv);
+
+int main(int argc, char **argv)
+{
+ unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
+ if (!sysinfo_ehdr) {
+ printf("AT_SYSINFO_EHDR is not present!\n");
+ return 0;
+ }
+
+ vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));
+
+ /* Find gettimeofday. */
+ typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz);
+ gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday");
+
+ if (!gtod) {
+ printf("Could not find __vdso_gettimeofday\n");
+ return 1;
+ }
+
+ struct timeval tv;
+ long ret = gtod(&tv, 0);
+
+ if (ret == 0) {
+ printf("The time is %lld.%06lld\n",
+ (long long)tv.tv_sec, (long long)tv.tv_usec);
+ } else {
+ printf("__vdso_gettimeofday failed\n");
+ }
+
+ return 0;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH v2 5/6] selftests: move ia64 tests from Documentation/ia64
2016-09-13 20:18 [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Shuah Khan
` (3 preceding siblings ...)
2016-09-13 20:18 ` [PATCH v2 4/6] selftests: move vDSO tests from Documentation/vDSO Shuah Khan
@ 2016-09-13 20:18 ` Shuah Khan
2016-09-13 20:18 ` [PATCH v2 6/6] selftests: move watchdog tests from Documentation/watchdog Shuah Khan
2016-09-14 13:35 ` [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Jonathan Corbet
6 siblings, 0 replies; 11+ messages in thread
From: Shuah Khan @ 2016-09-13 20:18 UTC (permalink / raw)
To: corbet, richardcochran, wim, linux, nab, maheshkhanwalkar, timur,
arnd, ghackmann, ben, thuth, christopher.s.hall, john.stultz,
sergei.shtylyov, mpe, jani.nikula
Cc: Shuah Khan, linux-doc, linux-kernel, netdev, linux-watchdog,
linux-kselftest
Remove ia64 from Makefile to move the test to selftests.
Update ia64 Makefile to work under selftests. ia64 will not be run as part
of selftests suite and will not be included in install targets. They can be
built separately for now.
The original Makefile built this test on all archirectures and this update
doesn't change that.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/Makefile | 2 +-
Documentation/ia64/.gitignore | 1 -
Documentation/ia64/Makefile | 5 -
Documentation/ia64/aliasing-test.c | 263 ---------------------------
tools/testing/selftests/ia64/.gitignore | 1 +
tools/testing/selftests/ia64/Makefile | 8 +
tools/testing/selftests/ia64/aliasing-test.c | 263 +++++++++++++++++++++++++++
7 files changed, 273 insertions(+), 270 deletions(-)
delete mode 100644 Documentation/ia64/.gitignore
delete mode 100644 Documentation/ia64/Makefile
delete mode 100644 Documentation/ia64/aliasing-test.c
create mode 100644 tools/testing/selftests/ia64/.gitignore
create mode 100644 tools/testing/selftests/ia64/Makefile
create mode 100644 tools/testing/selftests/ia64/aliasing-test.c
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 085b917..572e9b7 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,3 +1,3 @@
subdir-y := accounting auxdisplay blackfin \
- ia64 laptops mic misc-devices \
+ laptops mic misc-devices \
networking pcmcia timers watchdog
diff --git a/Documentation/ia64/.gitignore b/Documentation/ia64/.gitignore
deleted file mode 100644
index ab806ed..0000000
--- a/Documentation/ia64/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-aliasing-test
diff --git a/Documentation/ia64/Makefile b/Documentation/ia64/Makefile
deleted file mode 100644
index d493163..0000000
--- a/Documentation/ia64/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-# List of programs to build
-hostprogs-y := aliasing-test
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
diff --git a/Documentation/ia64/aliasing-test.c b/Documentation/ia64/aliasing-test.c
deleted file mode 100644
index 62a190d..0000000
--- a/Documentation/ia64/aliasing-test.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * Exercise /dev/mem mmap cases that have been troublesome in the past
- *
- * (c) Copyright 2007 Hewlett-Packard Development Company, L.P.
- * Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <fnmatch.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <linux/pci.h>
-
-int sum;
-
-static int map_mem(char *path, off_t offset, size_t length, int touch)
-{
- int fd, rc;
- void *addr;
- int *c;
-
- fd = open(path, O_RDWR);
- if (fd == -1) {
- perror(path);
- return -1;
- }
-
- if (fnmatch("/proc/bus/pci/*", path, 0) == 0) {
- rc = ioctl(fd, PCIIOC_MMAP_IS_MEM);
- if (rc == -1)
- perror("PCIIOC_MMAP_IS_MEM ioctl");
- }
-
- addr = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, offset);
- if (addr == MAP_FAILED)
- return 1;
-
- if (touch) {
- c = (int *) addr;
- while (c < (int *) (addr + length))
- sum += *c++;
- }
-
- rc = munmap(addr, length);
- if (rc == -1) {
- perror("munmap");
- return -1;
- }
-
- close(fd);
- return 0;
-}
-
-static int scan_tree(char *path, char *file, off_t offset, size_t length, int touch)
-{
- struct dirent **namelist;
- char *name, *path2;
- int i, n, r, rc = 0, result = 0;
- struct stat buf;
-
- n = scandir(path, &namelist, 0, alphasort);
- if (n < 0) {
- perror("scandir");
- return -1;
- }
-
- for (i = 0; i < n; i++) {
- name = namelist[i]->d_name;
-
- if (fnmatch(".", name, 0) == 0)
- goto skip;
- if (fnmatch("..", name, 0) == 0)
- goto skip;
-
- path2 = malloc(strlen(path) + strlen(name) + 3);
- strcpy(path2, path);
- strcat(path2, "/");
- strcat(path2, name);
-
- if (fnmatch(file, name, 0) == 0) {
- rc = map_mem(path2, offset, length, touch);
- if (rc == 0)
- fprintf(stderr, "PASS: %s 0x%lx-0x%lx is %s\n", path2, offset, offset + length, touch ? "readable" : "mappable");
- else if (rc > 0)
- fprintf(stderr, "PASS: %s 0x%lx-0x%lx not mappable\n", path2, offset, offset + length);
- else {
- fprintf(stderr, "FAIL: %s 0x%lx-0x%lx not accessible\n", path2, offset, offset + length);
- return rc;
- }
- } else {
- r = lstat(path2, &buf);
- if (r == 0 && S_ISDIR(buf.st_mode)) {
- rc = scan_tree(path2, file, offset, length, touch);
- if (rc < 0)
- return rc;
- }
- }
-
- result |= rc;
- free(path2);
-
-skip:
- free(namelist[i]);
- }
- free(namelist);
- return result;
-}
-
-char buf[1024];
-
-static int read_rom(char *path)
-{
- int fd, rc;
- size_t size = 0;
-
- fd = open(path, O_RDWR);
- if (fd == -1) {
- perror(path);
- return -1;
- }
-
- rc = write(fd, "1", 2);
- if (rc <= 0) {
- close(fd);
- perror("write");
- return -1;
- }
-
- do {
- rc = read(fd, buf, sizeof(buf));
- if (rc > 0)
- size += rc;
- } while (rc > 0);
-
- close(fd);
- return size;
-}
-
-static int scan_rom(char *path, char *file)
-{
- struct dirent **namelist;
- char *name, *path2;
- int i, n, r, rc = 0, result = 0;
- struct stat buf;
-
- n = scandir(path, &namelist, 0, alphasort);
- if (n < 0) {
- perror("scandir");
- return -1;
- }
-
- for (i = 0; i < n; i++) {
- name = namelist[i]->d_name;
-
- if (fnmatch(".", name, 0) == 0)
- goto skip;
- if (fnmatch("..", name, 0) == 0)
- goto skip;
-
- path2 = malloc(strlen(path) + strlen(name) + 3);
- strcpy(path2, path);
- strcat(path2, "/");
- strcat(path2, name);
-
- if (fnmatch(file, name, 0) == 0) {
- rc = read_rom(path2);
-
- /*
- * It's OK if the ROM is unreadable. Maybe there
- * is no ROM, or some other error occurred. The
- * important thing is that no MCA happened.
- */
- if (rc > 0)
- fprintf(stderr, "PASS: %s read %d bytes\n", path2, rc);
- else {
- fprintf(stderr, "PASS: %s not readable\n", path2);
- return rc;
- }
- } else {
- r = lstat(path2, &buf);
- if (r == 0 && S_ISDIR(buf.st_mode)) {
- rc = scan_rom(path2, file);
- if (rc < 0)
- return rc;
- }
- }
-
- result |= rc;
- free(path2);
-
-skip:
- free(namelist[i]);
- }
- free(namelist);
- return result;
-}
-
-int main(void)
-{
- int rc;
-
- if (map_mem("/dev/mem", 0, 0xA0000, 1) == 0)
- fprintf(stderr, "PASS: /dev/mem 0x0-0xa0000 is readable\n");
- else
- fprintf(stderr, "FAIL: /dev/mem 0x0-0xa0000 not accessible\n");
-
- /*
- * It's not safe to blindly read the VGA frame buffer. If you know
- * how to poke the card the right way, it should respond, but it's
- * not safe in general. Many machines, e.g., Intel chipsets, cover
- * up a non-responding card by just returning -1, but others will
- * report the failure as a machine check.
- */
- if (map_mem("/dev/mem", 0xA0000, 0x20000, 0) == 0)
- fprintf(stderr, "PASS: /dev/mem 0xa0000-0xc0000 is mappable\n");
- else
- fprintf(stderr, "FAIL: /dev/mem 0xa0000-0xc0000 not accessible\n");
-
- if (map_mem("/dev/mem", 0xC0000, 0x40000, 1) == 0)
- fprintf(stderr, "PASS: /dev/mem 0xc0000-0x100000 is readable\n");
- else
- fprintf(stderr, "FAIL: /dev/mem 0xc0000-0x100000 not accessible\n");
-
- /*
- * Often you can map all the individual pieces above (0-0xA0000,
- * 0xA0000-0xC0000, and 0xC0000-0x100000), but can't map the whole
- * thing at once. This is because the individual pieces use different
- * attributes, and there's no single attribute supported over the
- * whole region.
- */
- rc = map_mem("/dev/mem", 0, 1024*1024, 0);
- if (rc == 0)
- fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 is mappable\n");
- else if (rc > 0)
- fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 not mappable\n");
- else
- fprintf(stderr, "FAIL: /dev/mem 0x0-0x100000 not accessible\n");
-
- scan_tree("/sys/class/pci_bus", "legacy_mem", 0, 0xA0000, 1);
- scan_tree("/sys/class/pci_bus", "legacy_mem", 0xA0000, 0x20000, 0);
- scan_tree("/sys/class/pci_bus", "legacy_mem", 0xC0000, 0x40000, 1);
- scan_tree("/sys/class/pci_bus", "legacy_mem", 0, 1024*1024, 0);
-
- scan_rom("/sys/devices", "rom");
-
- scan_tree("/proc/bus/pci", "??.?", 0, 0xA0000, 1);
- scan_tree("/proc/bus/pci", "??.?", 0xA0000, 0x20000, 0);
- scan_tree("/proc/bus/pci", "??.?", 0xC0000, 0x40000, 1);
- scan_tree("/proc/bus/pci", "??.?", 0, 1024*1024, 0);
-
- return rc;
-}
diff --git a/tools/testing/selftests/ia64/.gitignore b/tools/testing/selftests/ia64/.gitignore
new file mode 100644
index 0000000..ab806ed
--- /dev/null
+++ b/tools/testing/selftests/ia64/.gitignore
@@ -0,0 +1 @@
+aliasing-test
diff --git a/tools/testing/selftests/ia64/Makefile b/tools/testing/selftests/ia64/Makefile
new file mode 100644
index 0000000..2b3de2d
--- /dev/null
+++ b/tools/testing/selftests/ia64/Makefile
@@ -0,0 +1,8 @@
+TEST_PROGS := aliasing-test
+
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+clean:
+ rm -fr $(TEST_PROGS)
diff --git a/tools/testing/selftests/ia64/aliasing-test.c b/tools/testing/selftests/ia64/aliasing-test.c
new file mode 100644
index 0000000..62a190d
--- /dev/null
+++ b/tools/testing/selftests/ia64/aliasing-test.c
@@ -0,0 +1,263 @@
+/*
+ * Exercise /dev/mem mmap cases that have been troublesome in the past
+ *
+ * (c) Copyright 2007 Hewlett-Packard Development Company, L.P.
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <fnmatch.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <linux/pci.h>
+
+int sum;
+
+static int map_mem(char *path, off_t offset, size_t length, int touch)
+{
+ int fd, rc;
+ void *addr;
+ int *c;
+
+ fd = open(path, O_RDWR);
+ if (fd == -1) {
+ perror(path);
+ return -1;
+ }
+
+ if (fnmatch("/proc/bus/pci/*", path, 0) == 0) {
+ rc = ioctl(fd, PCIIOC_MMAP_IS_MEM);
+ if (rc == -1)
+ perror("PCIIOC_MMAP_IS_MEM ioctl");
+ }
+
+ addr = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, offset);
+ if (addr == MAP_FAILED)
+ return 1;
+
+ if (touch) {
+ c = (int *) addr;
+ while (c < (int *) (addr + length))
+ sum += *c++;
+ }
+
+ rc = munmap(addr, length);
+ if (rc == -1) {
+ perror("munmap");
+ return -1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+static int scan_tree(char *path, char *file, off_t offset, size_t length, int touch)
+{
+ struct dirent **namelist;
+ char *name, *path2;
+ int i, n, r, rc = 0, result = 0;
+ struct stat buf;
+
+ n = scandir(path, &namelist, 0, alphasort);
+ if (n < 0) {
+ perror("scandir");
+ return -1;
+ }
+
+ for (i = 0; i < n; i++) {
+ name = namelist[i]->d_name;
+
+ if (fnmatch(".", name, 0) == 0)
+ goto skip;
+ if (fnmatch("..", name, 0) == 0)
+ goto skip;
+
+ path2 = malloc(strlen(path) + strlen(name) + 3);
+ strcpy(path2, path);
+ strcat(path2, "/");
+ strcat(path2, name);
+
+ if (fnmatch(file, name, 0) == 0) {
+ rc = map_mem(path2, offset, length, touch);
+ if (rc == 0)
+ fprintf(stderr, "PASS: %s 0x%lx-0x%lx is %s\n", path2, offset, offset + length, touch ? "readable" : "mappable");
+ else if (rc > 0)
+ fprintf(stderr, "PASS: %s 0x%lx-0x%lx not mappable\n", path2, offset, offset + length);
+ else {
+ fprintf(stderr, "FAIL: %s 0x%lx-0x%lx not accessible\n", path2, offset, offset + length);
+ return rc;
+ }
+ } else {
+ r = lstat(path2, &buf);
+ if (r == 0 && S_ISDIR(buf.st_mode)) {
+ rc = scan_tree(path2, file, offset, length, touch);
+ if (rc < 0)
+ return rc;
+ }
+ }
+
+ result |= rc;
+ free(path2);
+
+skip:
+ free(namelist[i]);
+ }
+ free(namelist);
+ return result;
+}
+
+char buf[1024];
+
+static int read_rom(char *path)
+{
+ int fd, rc;
+ size_t size = 0;
+
+ fd = open(path, O_RDWR);
+ if (fd == -1) {
+ perror(path);
+ return -1;
+ }
+
+ rc = write(fd, "1", 2);
+ if (rc <= 0) {
+ close(fd);
+ perror("write");
+ return -1;
+ }
+
+ do {
+ rc = read(fd, buf, sizeof(buf));
+ if (rc > 0)
+ size += rc;
+ } while (rc > 0);
+
+ close(fd);
+ return size;
+}
+
+static int scan_rom(char *path, char *file)
+{
+ struct dirent **namelist;
+ char *name, *path2;
+ int i, n, r, rc = 0, result = 0;
+ struct stat buf;
+
+ n = scandir(path, &namelist, 0, alphasort);
+ if (n < 0) {
+ perror("scandir");
+ return -1;
+ }
+
+ for (i = 0; i < n; i++) {
+ name = namelist[i]->d_name;
+
+ if (fnmatch(".", name, 0) == 0)
+ goto skip;
+ if (fnmatch("..", name, 0) == 0)
+ goto skip;
+
+ path2 = malloc(strlen(path) + strlen(name) + 3);
+ strcpy(path2, path);
+ strcat(path2, "/");
+ strcat(path2, name);
+
+ if (fnmatch(file, name, 0) == 0) {
+ rc = read_rom(path2);
+
+ /*
+ * It's OK if the ROM is unreadable. Maybe there
+ * is no ROM, or some other error occurred. The
+ * important thing is that no MCA happened.
+ */
+ if (rc > 0)
+ fprintf(stderr, "PASS: %s read %d bytes\n", path2, rc);
+ else {
+ fprintf(stderr, "PASS: %s not readable\n", path2);
+ return rc;
+ }
+ } else {
+ r = lstat(path2, &buf);
+ if (r == 0 && S_ISDIR(buf.st_mode)) {
+ rc = scan_rom(path2, file);
+ if (rc < 0)
+ return rc;
+ }
+ }
+
+ result |= rc;
+ free(path2);
+
+skip:
+ free(namelist[i]);
+ }
+ free(namelist);
+ return result;
+}
+
+int main(void)
+{
+ int rc;
+
+ if (map_mem("/dev/mem", 0, 0xA0000, 1) == 0)
+ fprintf(stderr, "PASS: /dev/mem 0x0-0xa0000 is readable\n");
+ else
+ fprintf(stderr, "FAIL: /dev/mem 0x0-0xa0000 not accessible\n");
+
+ /*
+ * It's not safe to blindly read the VGA frame buffer. If you know
+ * how to poke the card the right way, it should respond, but it's
+ * not safe in general. Many machines, e.g., Intel chipsets, cover
+ * up a non-responding card by just returning -1, but others will
+ * report the failure as a machine check.
+ */
+ if (map_mem("/dev/mem", 0xA0000, 0x20000, 0) == 0)
+ fprintf(stderr, "PASS: /dev/mem 0xa0000-0xc0000 is mappable\n");
+ else
+ fprintf(stderr, "FAIL: /dev/mem 0xa0000-0xc0000 not accessible\n");
+
+ if (map_mem("/dev/mem", 0xC0000, 0x40000, 1) == 0)
+ fprintf(stderr, "PASS: /dev/mem 0xc0000-0x100000 is readable\n");
+ else
+ fprintf(stderr, "FAIL: /dev/mem 0xc0000-0x100000 not accessible\n");
+
+ /*
+ * Often you can map all the individual pieces above (0-0xA0000,
+ * 0xA0000-0xC0000, and 0xC0000-0x100000), but can't map the whole
+ * thing at once. This is because the individual pieces use different
+ * attributes, and there's no single attribute supported over the
+ * whole region.
+ */
+ rc = map_mem("/dev/mem", 0, 1024*1024, 0);
+ if (rc == 0)
+ fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 is mappable\n");
+ else if (rc > 0)
+ fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 not mappable\n");
+ else
+ fprintf(stderr, "FAIL: /dev/mem 0x0-0x100000 not accessible\n");
+
+ scan_tree("/sys/class/pci_bus", "legacy_mem", 0, 0xA0000, 1);
+ scan_tree("/sys/class/pci_bus", "legacy_mem", 0xA0000, 0x20000, 0);
+ scan_tree("/sys/class/pci_bus", "legacy_mem", 0xC0000, 0x40000, 1);
+ scan_tree("/sys/class/pci_bus", "legacy_mem", 0, 1024*1024, 0);
+
+ scan_rom("/sys/devices", "rom");
+
+ scan_tree("/proc/bus/pci", "??.?", 0, 0xA0000, 1);
+ scan_tree("/proc/bus/pci", "??.?", 0xA0000, 0x20000, 0);
+ scan_tree("/proc/bus/pci", "??.?", 0xC0000, 0x40000, 1);
+ scan_tree("/proc/bus/pci", "??.?", 0, 1024*1024, 0);
+
+ return rc;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH v2 6/6] selftests: move watchdog tests from Documentation/watchdog
2016-09-13 20:18 [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Shuah Khan
` (4 preceding siblings ...)
2016-09-13 20:18 ` [PATCH v2 5/6] selftests: move ia64 tests from Documentation/ia64 Shuah Khan
@ 2016-09-13 20:18 ` Shuah Khan
2016-09-13 20:33 ` Timur Tabi
2016-09-14 13:35 ` [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Jonathan Corbet
6 siblings, 1 reply; 11+ messages in thread
From: Shuah Khan @ 2016-09-13 20:18 UTC (permalink / raw)
To: corbet, richardcochran, wim, linux, nab, maheshkhanwalkar, timur,
arnd, ghackmann, ben, thuth, christopher.s.hall, john.stultz,
sergei.shtylyov, mpe, jani.nikula
Cc: Shuah Khan, linux-doc, linux-kernel, netdev, linux-watchdog,
linux-kselftest
Remove watchdog-test from Makefile to move the test to selftests.
Add Makefile and .gitignore to for watchdog-test. watchdog-test will
not be run as part of selftests suite and will not be included in
install targets. It can be built separately for now.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
Documentation/watchdog/src/.gitignore | 1 -
Documentation/watchdog/src/Makefile | 2 +-
Documentation/watchdog/src/watchdog-test.c | 105 -----------------------
tools/testing/selftests/watchdog/.gitignore | 1 +
tools/testing/selftests/watchdog/Makefile | 8 ++
tools/testing/selftests/watchdog/watchdog-test.c | 105 +++++++++++++++++++++++
6 files changed, 115 insertions(+), 107 deletions(-)
delete mode 100644 Documentation/watchdog/src/watchdog-test.c
create mode 100644 tools/testing/selftests/watchdog/.gitignore
create mode 100644 tools/testing/selftests/watchdog/Makefile
create mode 100644 tools/testing/selftests/watchdog/watchdog-test.c
diff --git a/Documentation/watchdog/src/.gitignore b/Documentation/watchdog/src/.gitignore
index ac90997..ff0ebb5 100644
--- a/Documentation/watchdog/src/.gitignore
+++ b/Documentation/watchdog/src/.gitignore
@@ -1,2 +1 @@
watchdog-simple
-watchdog-test
diff --git a/Documentation/watchdog/src/Makefile b/Documentation/watchdog/src/Makefile
index 4a892c3..47be791 100644
--- a/Documentation/watchdog/src/Makefile
+++ b/Documentation/watchdog/src/Makefile
@@ -1,5 +1,5 @@
# List of programs to build
-hostprogs-y := watchdog-simple watchdog-test
+hostprogs-y := watchdog-simple
# Tell kbuild to always build the programs
always := $(hostprogs-y)
diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c
deleted file mode 100644
index 6983d05..0000000
--- a/Documentation/watchdog/src/watchdog-test.c
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Watchdog Driver Test Program
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <linux/types.h>
-#include <linux/watchdog.h>
-
-int fd;
-const char v = 'V';
-
-/*
- * This function simply sends an IOCTL to the driver, which in turn ticks
- * the PC Watchdog card to reset its internal timer so it doesn't trigger
- * a computer reset.
- */
-static void keep_alive(void)
-{
- int dummy;
-
- printf(".");
- ioctl(fd, WDIOC_KEEPALIVE, &dummy);
-}
-
-/*
- * The main program. Run the program with "-d" to disable the card,
- * or "-e" to enable the card.
- */
-
-static void term(int sig)
-{
- int ret = write(fd, &v, 1);
-
- close(fd);
- if (ret < 0)
- printf("\nStopping watchdog ticks failed (%d)...\n", errno);
- else
- printf("\nStopping watchdog ticks...\n");
- exit(0);
-}
-
-int main(int argc, char *argv[])
-{
- int flags;
- unsigned int ping_rate = 1;
- int ret;
-
- setbuf(stdout, NULL);
-
- fd = open("/dev/watchdog", O_WRONLY);
-
- if (fd == -1) {
- printf("Watchdog device not enabled.\n");
- exit(-1);
- }
-
- if (argc > 1) {
- if (!strncasecmp(argv[1], "-d", 2)) {
- flags = WDIOS_DISABLECARD;
- ioctl(fd, WDIOC_SETOPTIONS, &flags);
- printf("Watchdog card disabled.\n");
- goto end;
- } else if (!strncasecmp(argv[1], "-e", 2)) {
- flags = WDIOS_ENABLECARD;
- ioctl(fd, WDIOC_SETOPTIONS, &flags);
- printf("Watchdog card enabled.\n");
- goto end;
- } else if (!strncasecmp(argv[1], "-t", 2) && argv[2]) {
- flags = atoi(argv[2]);
- ioctl(fd, WDIOC_SETTIMEOUT, &flags);
- printf("Watchdog timeout set to %u seconds.\n", flags);
- goto end;
- } else if (!strncasecmp(argv[1], "-p", 2) && argv[2]) {
- ping_rate = strtoul(argv[2], NULL, 0);
- printf("Watchdog ping rate set to %u seconds.\n", ping_rate);
- } else {
- printf("-d to disable, -e to enable, -t <n> to set " \
- "the timeout,\n-p <n> to set the ping rate, and \n");
- printf("run by itself to tick the card.\n");
- goto end;
- }
- }
-
- printf("Watchdog Ticking Away!\n");
-
- signal(SIGINT, term);
-
- while(1) {
- keep_alive();
- sleep(ping_rate);
- }
-end:
- ret = write(fd, &v, 1);
- if (ret < 0)
- printf("Stopping watchdog ticks failed (%d)...\n", errno);
- close(fd);
- return 0;
-}
diff --git a/tools/testing/selftests/watchdog/.gitignore b/tools/testing/selftests/watchdog/.gitignore
new file mode 100644
index 0000000..5aac515
--- /dev/null
+++ b/tools/testing/selftests/watchdog/.gitignore
@@ -0,0 +1 @@
+watchdog-test
diff --git a/tools/testing/selftests/watchdog/Makefile b/tools/testing/selftests/watchdog/Makefile
new file mode 100644
index 0000000..f863c66
--- /dev/null
+++ b/tools/testing/selftests/watchdog/Makefile
@@ -0,0 +1,8 @@
+TEST_PROGS := watchdog-test
+
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+clean:
+ rm -fr $(TEST_PROGS)
diff --git a/tools/testing/selftests/watchdog/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c
new file mode 100644
index 0000000..6983d05
--- /dev/null
+++ b/tools/testing/selftests/watchdog/watchdog-test.c
@@ -0,0 +1,105 @@
+/*
+ * Watchdog Driver Test Program
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <linux/types.h>
+#include <linux/watchdog.h>
+
+int fd;
+const char v = 'V';
+
+/*
+ * This function simply sends an IOCTL to the driver, which in turn ticks
+ * the PC Watchdog card to reset its internal timer so it doesn't trigger
+ * a computer reset.
+ */
+static void keep_alive(void)
+{
+ int dummy;
+
+ printf(".");
+ ioctl(fd, WDIOC_KEEPALIVE, &dummy);
+}
+
+/*
+ * The main program. Run the program with "-d" to disable the card,
+ * or "-e" to enable the card.
+ */
+
+static void term(int sig)
+{
+ int ret = write(fd, &v, 1);
+
+ close(fd);
+ if (ret < 0)
+ printf("\nStopping watchdog ticks failed (%d)...\n", errno);
+ else
+ printf("\nStopping watchdog ticks...\n");
+ exit(0);
+}
+
+int main(int argc, char *argv[])
+{
+ int flags;
+ unsigned int ping_rate = 1;
+ int ret;
+
+ setbuf(stdout, NULL);
+
+ fd = open("/dev/watchdog", O_WRONLY);
+
+ if (fd == -1) {
+ printf("Watchdog device not enabled.\n");
+ exit(-1);
+ }
+
+ if (argc > 1) {
+ if (!strncasecmp(argv[1], "-d", 2)) {
+ flags = WDIOS_DISABLECARD;
+ ioctl(fd, WDIOC_SETOPTIONS, &flags);
+ printf("Watchdog card disabled.\n");
+ goto end;
+ } else if (!strncasecmp(argv[1], "-e", 2)) {
+ flags = WDIOS_ENABLECARD;
+ ioctl(fd, WDIOC_SETOPTIONS, &flags);
+ printf("Watchdog card enabled.\n");
+ goto end;
+ } else if (!strncasecmp(argv[1], "-t", 2) && argv[2]) {
+ flags = atoi(argv[2]);
+ ioctl(fd, WDIOC_SETTIMEOUT, &flags);
+ printf("Watchdog timeout set to %u seconds.\n", flags);
+ goto end;
+ } else if (!strncasecmp(argv[1], "-p", 2) && argv[2]) {
+ ping_rate = strtoul(argv[2], NULL, 0);
+ printf("Watchdog ping rate set to %u seconds.\n", ping_rate);
+ } else {
+ printf("-d to disable, -e to enable, -t <n> to set " \
+ "the timeout,\n-p <n> to set the ping rate, and \n");
+ printf("run by itself to tick the card.\n");
+ goto end;
+ }
+ }
+
+ printf("Watchdog Ticking Away!\n");
+
+ signal(SIGINT, term);
+
+ while(1) {
+ keep_alive();
+ sleep(ping_rate);
+ }
+end:
+ ret = write(fd, &v, 1);
+ if (ret < 0)
+ printf("Stopping watchdog ticks failed (%d)...\n", errno);
+ close(fd);
+ return 0;
+}
--
2.7.4
^ permalink raw reply related [flat|nested] 11+ messages in thread* Re: [PATCH v2 6/6] selftests: move watchdog tests from Documentation/watchdog
2016-09-13 20:18 ` [PATCH v2 6/6] selftests: move watchdog tests from Documentation/watchdog Shuah Khan
@ 2016-09-13 20:33 ` Timur Tabi
2016-09-13 20:48 ` Shuah Khan
0 siblings, 1 reply; 11+ messages in thread
From: Timur Tabi @ 2016-09-13 20:33 UTC (permalink / raw)
To: Shuah Khan, corbet, richardcochran, wim, linux, nab,
maheshkhanwalkar, arnd, ghackmann, ben, thuth,
christopher.s.hall, john.stultz, sergei.shtylyov, mpe,
jani.nikula
Cc: linux-doc, linux-kernel, netdev, linux-watchdog, linux-kselftest
Shuah Khan wrote:
> Remove watchdog-test from Makefile to move the test to selftests.
>
> Add Makefile and .gitignore to for watchdog-test. watchdog-test will
to for?
> not be run as part of selftests suite and will not be included in
> install targets. It can be built separately for now.
>
> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
> ---
> Documentation/watchdog/src/.gitignore | 1 -
> Documentation/watchdog/src/Makefile | 2 +-
> Documentation/watchdog/src/watchdog-test.c | 105 -----------------------
> tools/testing/selftests/watchdog/.gitignore | 1 +
> tools/testing/selftests/watchdog/Makefile | 8 ++
> tools/testing/selftests/watchdog/watchdog-test.c | 105 +++++++++++++++++++++++
Please use -M when calling git-format-patch
> 6 files changed, 115 insertions(+), 107 deletions(-)
> delete mode 100644 Documentation/watchdog/src/watchdog-test.c
> create mode 100644 tools/testing/selftests/watchdog/.gitignore
> create mode 100644 tools/testing/selftests/watchdog/Makefile
> create mode 100644 tools/testing/selftests/watchdog/watchdog-test.c
>
> diff --git a/Documentation/watchdog/src/.gitignore b/Documentation/watchdog/src/.gitignore
> index ac90997..ff0ebb5 100644
> --- a/Documentation/watchdog/src/.gitignore
> +++ b/Documentation/watchdog/src/.gitignore
> @@ -1,2 +1 @@
> watchdog-simple
> -watchdog-test
Why not also watchdog-simple?
--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc. Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH v2 6/6] selftests: move watchdog tests from Documentation/watchdog
2016-09-13 20:33 ` Timur Tabi
@ 2016-09-13 20:48 ` Shuah Khan
2016-09-13 20:52 ` Timur Tabi
0 siblings, 1 reply; 11+ messages in thread
From: Shuah Khan @ 2016-09-13 20:48 UTC (permalink / raw)
To: Timur Tabi, corbet, richardcochran, wim, linux, nab,
maheshkhanwalkar, arnd, ghackmann, ben, thuth,
christopher.s.hall, john.stultz, sergei.shtylyov, mpe,
jani.nikula
Cc: linux-doc, linux-kernel, netdev, linux-watchdog, linux-kselftest,
Shuah Khan
On 09/13/2016 02:33 PM, Timur Tabi wrote:
> Shuah Khan wrote:
>> Remove watchdog-test from Makefile to move the test to selftests.
>>
>> Add Makefile and .gitignore to for watchdog-test. watchdog-test will
>
> to for?
Thanks - will fix that.
>
>> not be run as part of selftests suite and will not be included in
>> install targets. It can be built separately for now.
>>
>> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
>> ---
>> Documentation/watchdog/src/.gitignore | 1 -
>> Documentation/watchdog/src/Makefile | 2 +-
>> Documentation/watchdog/src/watchdog-test.c | 105 -----------------------
>> tools/testing/selftests/watchdog/.gitignore | 1 +
>> tools/testing/selftests/watchdog/Makefile | 8 ++
>> tools/testing/selftests/watchdog/watchdog-test.c | 105 +++++++++++++++++++++++
>
> Please use -M when calling git-format-patch
okay.
>
>> 6 files changed, 115 insertions(+), 107 deletions(-)
>> delete mode 100644 Documentation/watchdog/src/watchdog-test.c
>> create mode 100644 tools/testing/selftests/watchdog/.gitignore
>> create mode 100644 tools/testing/selftests/watchdog/Makefile
>> create mode 100644 tools/testing/selftests/watchdog/watchdog-test.c
>>
>> diff --git a/Documentation/watchdog/src/.gitignore b/Documentation/watchdog/src/.gitignore
>> index ac90997..ff0ebb5 100644
>> --- a/Documentation/watchdog/src/.gitignore
>> +++ b/Documentation/watchdog/src/.gitignore
>> @@ -1,2 +1 @@
>> watchdog-simple
>> -watchdog-test
>
> Why not also watchdog-simple?
>
Is watchdog-simple a test or a sample/example? I thought this
is an example, and planning to move that under examples?
If this is a test, I will re-do the patch to include it.
thanks,
-- Shuah
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH v2 6/6] selftests: move watchdog tests from Documentation/watchdog
2016-09-13 20:48 ` Shuah Khan
@ 2016-09-13 20:52 ` Timur Tabi
0 siblings, 0 replies; 11+ messages in thread
From: Timur Tabi @ 2016-09-13 20:52 UTC (permalink / raw)
To: Shuah Khan, corbet, richardcochran, wim, linux, nab,
maheshkhanwalkar, arnd, ghackmann, ben, thuth,
christopher.s.hall, john.stultz, sergei.shtylyov, mpe,
jani.nikula
Cc: linux-doc, linux-kernel, netdev, linux-watchdog, linux-kselftest
Shuah Khan wrote:
> Is watchdog-simple a test or a sample/example? I thought this
> is an example, and planning to move that under examples?
>
> If this is a test, I will re-do the patch to include it.
I guess it's really just a sample.
--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc. Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests
2016-09-13 20:18 [PATCH v2 0/6] Move runnable code (tests) from Documentation to selftests Shuah Khan
` (5 preceding siblings ...)
2016-09-13 20:18 ` [PATCH v2 6/6] selftests: move watchdog tests from Documentation/watchdog Shuah Khan
@ 2016-09-14 13:35 ` Jonathan Corbet
6 siblings, 0 replies; 11+ messages in thread
From: Jonathan Corbet @ 2016-09-14 13:35 UTC (permalink / raw)
To: Shuah Khan
Cc: richardcochran, wim, linux, nab, maheshkhanwalkar, timur, arnd,
ghackmann, ben, thuth, christopher.s.hall, john.stultz,
sergei.shtylyov, mpe, jani.nikula, linux-doc, linux-kernel,
netdev, linux-watchdog, linux-kselftest
On Tue, 13 Sep 2016 14:18:39 -0600
Shuah Khan <shuahkh@osg.samsung.com> wrote:
> Move runnable code (tests) from Documentation to selftests and update
> Makefiles to work under selftests.
This all seems good to me.
Acked-by: Jonathan Corbet <corbet@lwn.net>
jon
^ permalink raw reply [flat|nested] 11+ messages in thread