diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/iio/Makefile | 21 | ||||
| -rw-r--r-- | tools/iio/iio_generic_buffer.c (renamed from tools/iio/generic_buffer.c) | 261 | ||||
| -rw-r--r-- | tools/objtool/builtin-check.c | 8 | ||||
| -rw-r--r-- | tools/testing/radix-tree/tag_check.c | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/rcutorture/bin/functions.sh | 12 | ||||
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh | 34 | ||||
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/kvm.sh | 2 | ||||
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/parse-console.sh | 7 | ||||
| -rw-r--r-- | tools/testing/selftests/rcutorture/doc/initrd.txt | 22 | ||||
| -rw-r--r-- | tools/vm/slabinfo.c | 3 |
10 files changed, 268 insertions, 104 deletions
diff --git a/tools/iio/Makefile b/tools/iio/Makefile index 3a7a54f59713..5446d625e17d 100644 --- a/tools/iio/Makefile +++ b/tools/iio/Makefile @@ -1,16 +1,31 @@ CC = $(CROSS_COMPILE)gcc CFLAGS += -Wall -g -D_GNU_SOURCE -all: iio_event_monitor lsiio generic_buffer +BINDIR=usr/bin +INSTALL_PROGRAM=install -m 755 -p +DEL_FILE=rm -f + +all: iio_event_monitor lsiio iio_generic_buffer iio_event_monitor: iio_event_monitor.o iio_utils.o lsiio: lsiio.o iio_utils.o -generic_buffer: generic_buffer.o iio_utils.o +iio_generic_buffer: iio_generic_buffer.o iio_utils.o %.o: %.c iio_utils.h +install: + - mkdir -p $(INSTALL_ROOT)/$(BINDIR) + - $(INSTALL_PROGRAM) "iio_event_monitor" "$(INSTALL_ROOT)/$(BINDIR)/iio_event_monitor" + - $(INSTALL_PROGRAM) "lsiio" "$(INSTALL_ROOT)/$(BINDIR)/lsiio" + - $(INSTALL_PROGRAM) "iio_generic_buffer" "$(INSTALL_ROOT)/$(BINDIR)/iio_generic_buffer" + +uninstall: + $(DEL_FILE) "$(INSTALL_ROOT)/$(BINDIR)/iio_event_monitor" + $(DEL_FILE) "$(INSTALL_ROOT)/$(BINDIR)/lsiio" + $(DEL_FILE) "$(INSTALL_ROOT)/$(BINDIR)/iio_generic_buffer" + .PHONY: clean clean: - rm -f *.o iio_event_monitor lsiio generic_buffer + rm -f *.o iio_event_monitor lsiio iio_generic_buffer diff --git a/tools/iio/generic_buffer.c b/tools/iio/iio_generic_buffer.c index 2429c78de940..0e8a1f7a292d 100644 --- a/tools/iio/generic_buffer.c +++ b/tools/iio/iio_generic_buffer.c @@ -32,6 +32,8 @@ #include <endian.h> #include <getopt.h> #include <inttypes.h> +#include <stdbool.h> +#include <signal.h> #include "iio_utils.h" /** @@ -249,11 +251,82 @@ void print_usage(void) " -e Disable wait for event (new data)\n" " -g Use trigger-less mode\n" " -l <n> Set buffer length to n samples\n" - " -n <name> Set device name (mandatory)\n" - " -t <name> Set trigger name\n" + " --device-name -n <name>\n" + " --device-num -N <num>\n" + " Set device by name or number (mandatory)\n" + " --trigger-name -t <name>\n" + " --trigger-num -T <num>\n" + " Set trigger by name or number\n" " -w <n> Set delay between reads in us (event-less mode)\n"); } +enum autochan autochannels = AUTOCHANNELS_DISABLED; +char *dev_dir_name = NULL; +char *buf_dir_name = NULL; +bool current_trigger_set = false; + +void cleanup(void) +{ + int ret; + + /* Disable trigger */ + if (dev_dir_name && current_trigger_set) { + /* Disconnect the trigger - just write a dummy name. */ + ret = write_sysfs_string("trigger/current_trigger", + dev_dir_name, "NULL"); + if (ret < 0) + fprintf(stderr, "Failed to disable trigger: %s\n", + strerror(-ret)); + current_trigger_set = false; + } + + /* Disable buffer */ + if (buf_dir_name) { + ret = write_sysfs_int("enable", buf_dir_name, 0); + if (ret < 0) + fprintf(stderr, "Failed to disable buffer: %s\n", + strerror(-ret)); + } + + /* Disable channels if auto-enabled */ + if (dev_dir_name && autochannels == AUTOCHANNELS_ACTIVE) { + ret = enable_disable_all_channels(dev_dir_name, 0); + if (ret) + fprintf(stderr, "Failed to disable all channels\n"); + autochannels = AUTOCHANNELS_DISABLED; + } +} + +void sig_handler(int signum) +{ + fprintf(stderr, "Caught signal %d\n", signum); + cleanup(); + exit(-signum); +} + +void register_cleanup(void) +{ + struct sigaction sa = { .sa_handler = sig_handler }; + const int signums[] = { SIGINT, SIGTERM, SIGABRT }; + int ret, i; + + for (i = 0; i < ARRAY_SIZE(signums); ++i) { + ret = sigaction(signums[i], &sa, NULL); + if (ret) { + perror("Failed to register signal handler"); + exit(-1); + } + } +} + +static const struct option longopts[] = { + { "device-name", 1, 0, 'n' }, + { "device-num", 1, 0, 'N' }, + { "trigger-name", 1, 0, 't' }, + { "trigger-num", 1, 0, 'T' }, + { }, +}; + int main(int argc, char **argv) { unsigned long num_loops = 2; @@ -261,26 +334,25 @@ int main(int argc, char **argv) unsigned long buf_len = 128; int ret, c, i, j, toread; - int fp; + int fp = -1; - int num_channels; + int num_channels = 0; char *trigger_name = NULL, *device_name = NULL; - char *dev_dir_name, *buf_dir_name; - int datardytrigger = 1; - char *data; + char *data = NULL; ssize_t read_size; - int dev_num, trig_num; - char *buffer_access; + int dev_num = -1, trig_num = -1; + char *buffer_access = NULL; int scan_size; int noevents = 0; int notrigger = 0; - enum autochan autochannels = AUTOCHANNELS_DISABLED; char *dummy; struct iio_channel_info *channels; - while ((c = getopt(argc, argv, "ac:egl:n:t:w:")) != -1) { + register_cleanup(); + + while ((c = getopt_long(argc, argv, "ac:egl:n:N:t:T:w:", longopts, NULL)) != -1) { switch (c) { case 'a': autochannels = AUTOCHANNELS_ENABLED; @@ -288,8 +360,10 @@ int main(int argc, char **argv) case 'c': errno = 0; num_loops = strtoul(optarg, &dummy, 10); - if (errno) - return -errno; + if (errno) { + ret = -errno; + goto error; + } break; case 'e': @@ -301,49 +375,102 @@ int main(int argc, char **argv) case 'l': errno = 0; buf_len = strtoul(optarg, &dummy, 10); - if (errno) - return -errno; + if (errno) { + ret = -errno; + goto error; + } break; case 'n': - device_name = optarg; + device_name = strdup(optarg); + break; + case 'N': + errno = 0; + dev_num = strtoul(optarg, &dummy, 10); + if (errno) { + ret = -errno; + goto error; + } break; case 't': - trigger_name = optarg; - datardytrigger = 0; + trigger_name = strdup(optarg); break; - case 'w': + case 'T': errno = 0; - timedelay = strtoul(optarg, &dummy, 10); + trig_num = strtoul(optarg, &dummy, 10); if (errno) return -errno; break; + case 'w': + errno = 0; + timedelay = strtoul(optarg, &dummy, 10); + if (errno) { + ret = -errno; + goto error; + } + break; case '?': print_usage(); - return -1; + ret = -1; + goto error; } } - if (!device_name) { - fprintf(stderr, "Device name not set\n"); - print_usage(); - return -1; - } - /* Find the device requested */ - dev_num = find_type_by_name(device_name, "iio:device"); - if (dev_num < 0) { - fprintf(stderr, "Failed to find the %s\n", device_name); - return dev_num; + if (dev_num < 0 && !device_name) { + fprintf(stderr, "Device not set\n"); + print_usage(); + ret = -1; + goto error; + } else if (dev_num >= 0 && device_name) { + fprintf(stderr, "Only one of --device-num or --device-name needs to be set\n"); + print_usage(); + ret = -1; + goto error; + } else if (dev_num < 0) { + dev_num = find_type_by_name(device_name, "iio:device"); + if (dev_num < 0) { + fprintf(stderr, "Failed to find the %s\n", device_name); + ret = dev_num; + goto error; + } } - printf("iio device number being used is %d\n", dev_num); ret = asprintf(&dev_dir_name, "%siio:device%d", iio_dir, dev_num); if (ret < 0) return -ENOMEM; + /* Fetch device_name if specified by number */ + if (!device_name) { + device_name = malloc(IIO_MAX_NAME_LENGTH); + if (!device_name) { + ret = -ENOMEM; + goto error; + } + ret = read_sysfs_string("name", dev_dir_name, device_name); + if (ret < 0) { + fprintf(stderr, "Failed to read name of device %d\n", dev_num); + goto error; + } + } - if (!notrigger) { + if (notrigger) { + printf("trigger-less mode selected\n"); + } if (trig_num >= 0) { + char *trig_dev_name; + ret = asprintf(&trig_dev_name, "%strigger%d", iio_dir, trig_num); + if (ret < 0) { + return -ENOMEM; + } + trigger_name = malloc(IIO_MAX_NAME_LENGTH); + ret = read_sysfs_string("name", trig_dev_name, trigger_name); + free(trig_dev_name); + if (ret < 0) { + fprintf(stderr, "Failed to read trigger%d name from\n", trig_num); + return ret; + } + printf("iio trigger number being used is %d\n", trig_num); + } else { if (!trigger_name) { /* * Build the trigger name. If it is device associated @@ -354,7 +481,7 @@ int main(int argc, char **argv) "%s-dev%d", device_name, dev_num); if (ret < 0) { ret = -ENOMEM; - goto error_free_dev_dir_name; + goto error; } } @@ -367,7 +494,7 @@ int main(int argc, char **argv) "%s-trigger", device_name); if (ret < 0) { ret = -ENOMEM; - goto error_free_dev_dir_name; + goto error; } } @@ -376,12 +503,10 @@ int main(int argc, char **argv) fprintf(stderr, "Failed to find the trigger %s\n", trigger_name); ret = trig_num; - goto error_free_triggername; + goto error; } printf("iio trigger number being used is %d\n", trig_num); - } else { - printf("trigger-less mode selected\n"); } /* @@ -392,7 +517,7 @@ int main(int argc, char **argv) if (ret) { fprintf(stderr, "Problem reading scan element information\n" "diag %s\n", dev_dir_name); - goto error_free_triggername; + goto error; } if (num_channels && autochannels == AUTOCHANNELS_ENABLED) { fprintf(stderr, "Auto-channels selected but some channels " @@ -407,7 +532,7 @@ int main(int argc, char **argv) ret = enable_disable_all_channels(dev_dir_name, 1); if (ret) { fprintf(stderr, "Failed to enable all channels\n"); - goto error_free_triggername; + goto error; } /* This flags that we need to disable the channels again */ @@ -419,12 +544,12 @@ int main(int argc, char **argv) fprintf(stderr, "Problem reading scan element " "information\n" "diag %s\n", dev_dir_name); - goto error_disable_channels; + goto error; } if (!num_channels) { fprintf(stderr, "Still no channels after " "auto-enabling, giving up\n"); - goto error_disable_channels; + goto error; } } @@ -436,7 +561,7 @@ int main(int argc, char **argv) "/*_en or pass -a to autoenable channels and " "try again.\n", dev_dir_name); ret = -ENOENT; - goto error_free_triggername; + goto error; } /* @@ -448,7 +573,7 @@ int main(int argc, char **argv) "%siio:device%d/buffer", iio_dir, dev_num); if (ret < 0) { ret = -ENOMEM; - goto error_free_channels; + goto error; } if (!notrigger) { @@ -463,34 +588,34 @@ int main(int argc, char **argv) if (ret < 0) { fprintf(stderr, "Failed to write current_trigger file\n"); - goto error_free_buf_dir_name; + goto error; } } /* Setup ring buffer parameters */ ret = write_sysfs_int("length", buf_dir_name, buf_len); if (ret < 0) - goto error_free_buf_dir_name; + goto error; /* Enable the buffer */ ret = write_sysfs_int("enable", buf_dir_name, 1); if (ret < 0) { fprintf(stderr, "Failed to enable buffer: %s\n", strerror(-ret)); - goto error_free_buf_dir_name; + goto error; } scan_size = size_from_channelarray(channels, num_channels); data = malloc(scan_size * buf_len); if (!data) { ret = -ENOMEM; - goto error_free_buf_dir_name; + goto error; } ret = asprintf(&buffer_access, "/dev/iio:device%d", dev_num); if (ret < 0) { ret = -ENOMEM; - goto error_free_data; + goto error; } /* Attempt to open non blocking the access dev */ @@ -498,7 +623,7 @@ int main(int argc, char **argv) if (fp == -1) { /* TODO: If it isn't there make the node */ ret = -errno; fprintf(stderr, "Failed to open %s\n", buffer_access); - goto error_free_buffer_access; + goto error; } for (j = 0; j < num_loops; j++) { @@ -511,7 +636,7 @@ int main(int argc, char **argv) ret = poll(&pfd, 1, -1); if (ret < 0) { ret = -errno; - goto error_close_buffer_access; + goto error; } else if (ret == 0) { continue; } @@ -536,45 +661,21 @@ int main(int argc, char **argv) num_channels); } - /* Stop the buffer */ - ret = write_sysfs_int("enable", buf_dir_name, 0); - if (ret < 0) - goto error_close_buffer_access; +error: + cleanup(); - if (!notrigger) - /* Disconnect the trigger - just write a dummy name. */ - ret = write_sysfs_string("trigger/current_trigger", - dev_dir_name, "NULL"); - if (ret < 0) - fprintf(stderr, "Failed to write to %s\n", - dev_dir_name); - -error_close_buffer_access: - if (close(fp) == -1) + if (fp >= 0 && close(fp) == -1) perror("Failed to close buffer"); - -error_free_buffer_access: free(buffer_access); -error_free_data: free(data); -error_free_buf_dir_name: free(buf_dir_name); -error_free_channels: for (i = num_channels - 1; i >= 0; i--) { free(channels[i].name); free(channels[i].generic_name); } free(channels); -error_free_triggername: - if (datardytrigger) - free(trigger_name); -error_disable_channels: - if (autochannels == AUTOCHANNELS_ACTIVE) { - ret = enable_disable_all_channels(dev_dir_name, 0); - if (ret) - fprintf(stderr, "Failed to disable all channels\n"); - } -error_free_dev_dir_name: + free(trigger_name); + free(device_name); free(dev_dir_name); return ret; diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c index 4ed30f45c6da..17fa7fc34fdf 100644 --- a/tools/objtool/builtin-check.c +++ b/tools/objtool/builtin-check.c @@ -123,10 +123,14 @@ static bool ignore_func(struct objtool_file *file, struct symbol *func) /* check for STACK_FRAME_NON_STANDARD */ if (file->whitelist && file->whitelist->rela) - list_for_each_entry(rela, &file->whitelist->rela->rela_list, list) - if (rela->sym->sec == func->sec && + list_for_each_entry(rela, &file->whitelist->rela->rela_list, list) { + if (rela->sym->type == STT_SECTION && + rela->sym->sec == func->sec && rela->addend == func->offset) return true; + if (rela->sym->type == STT_FUNC && rela->sym == func) + return true; + } /* check if it has a context switching instruction */ func_for_each_insn(file, func, insn) diff --git a/tools/testing/radix-tree/tag_check.c b/tools/testing/radix-tree/tag_check.c index b7447ceb75e9..b0ac05741750 100644 --- a/tools/testing/radix-tree/tag_check.c +++ b/tools/testing/radix-tree/tag_check.c @@ -122,7 +122,7 @@ enum { NODE_TAGGED = 2, }; -#define THRASH_SIZE 1000 * 1000 +#define THRASH_SIZE (1000 * 1000) #define N 127 #define BATCH 33 diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh index b325470c01b3..1426a9b97494 100644 --- a/tools/testing/selftests/rcutorture/bin/functions.sh +++ b/tools/testing/selftests/rcutorture/bin/functions.sh @@ -99,8 +99,9 @@ configfrag_hotplug_cpu () { # identify_boot_image qemu-cmd # # Returns the relative path to the kernel build image. This will be -# arch/<arch>/boot/bzImage unless overridden with the TORTURE_BOOT_IMAGE -# environment variable. +# arch/<arch>/boot/bzImage or vmlinux if bzImage is not a target for the +# architecture, unless overridden with the TORTURE_BOOT_IMAGE environment +# variable. identify_boot_image () { if test -n "$TORTURE_BOOT_IMAGE" then @@ -110,11 +111,8 @@ identify_boot_image () { qemu-system-x86_64|qemu-system-i386) echo arch/x86/boot/bzImage ;; - qemu-system-ppc64) - echo arch/powerpc/boot/bzImage - ;; *) - echo "" + echo vmlinux ;; esac fi @@ -175,7 +173,7 @@ identify_qemu_args () { qemu-system-x86_64|qemu-system-i386) ;; qemu-system-ppc64) - echo -enable-kvm -M pseries -cpu POWER7 -nodefaults + echo -enable-kvm -M pseries -nodefaults echo -device spapr-vscsi if test -n "$TORTURE_QEMU_INTERACTIVE" -a -n "$TORTURE_QEMU_MAC" then diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh index 4109f306d855..ea6e373edc27 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh @@ -8,9 +8,9 @@ # # Usage: kvm-test-1-run.sh config builddir resdir seconds qemu-args boot_args # -# qemu-args defaults to "-enable-kvm -soundhw pcspk -nographic", along with -# arguments specifying the number of CPUs and other -# options generated from the underlying CPU architecture. +# qemu-args defaults to "-enable-kvm -nographic", along with arguments +# specifying the number of CPUs and other options +# generated from the underlying CPU architecture. # boot_args defaults to value returned by the per_version_boot_params # shell function. # @@ -96,7 +96,8 @@ if test "$base_resdir" != "$resdir" -a -f $base_resdir/bzImage -a -f $base_resdi then # Rerunning previous test, so use that test's kernel. QEMU="`identify_qemu $base_resdir/vmlinux`" - KERNEL=$base_resdir/bzImage + BOOT_IMAGE="`identify_boot_image $QEMU`" + KERNEL=$base_resdir/${BOOT_IMAGE##*/} # use the last component of ${BOOT_IMAGE} ln -s $base_resdir/Make*.out $resdir # for kvm-recheck.sh ln -s $base_resdir/.config $resdir # for kvm-recheck.sh elif kvm-build.sh $config_template $builddir $T @@ -110,7 +111,7 @@ then if test -n "$BOOT_IMAGE" then cp $builddir/$BOOT_IMAGE $resdir - KERNEL=$resdir/bzImage + KERNEL=$resdir/${BOOT_IMAGE##*/} else echo No identifiable boot image, not running KVM, see $resdir. echo Do the torture scripts know about your architecture? @@ -147,7 +148,7 @@ then fi # Generate -smp qemu argument. -qemu_args="-enable-kvm -soundhw pcspk -nographic $qemu_args" +qemu_args="-enable-kvm -nographic $qemu_args" cpu_count=`configNR_CPUS.sh $config_template` cpu_count=`configfrag_boot_cpus "$boot_args" "$config_template" "$cpu_count"` vcpus=`identify_qemu_vcpus` @@ -229,6 +230,7 @@ fi if test $commandcompleted -eq 0 -a -n "$qemu_pid" then echo Grace period for qemu job at pid $qemu_pid + oldline="`tail $resdir/console.log`" while : do kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null` @@ -238,13 +240,29 @@ then else break fi - if test $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE)) + must_continue=no + newline="`tail $resdir/console.log`" + if test "$newline" != "$oldline" && echo $newline | grep -q ' [0-9]\+us : ' + then + must_continue=yes + fi + last_ts="`tail $resdir/console.log | grep '^\[ *[0-9]\+\.[0-9]\+]' | tail -1 | sed -e 's/^\[ *//' -e 's/\..*$//'`" + if test -z "last_ts" + then + last_ts=0 + fi + if test "$newline" != "$oldline" -a "$last_ts" -lt $((seconds + $TORTURE_SHUTDOWN_GRACE)) + then + must_continue=yes + fi + if test $must_continue = no -a $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE)) then echo "!!! PID $qemu_pid hung at $kruntime vs. $seconds seconds" >> $resdir/Warnings 2>&1 kill -KILL $qemu_pid break fi - sleep 1 + oldline=$newline + sleep 10 done elif test -z "$qemu_pid" then diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh index 0d598145873e..0aed965f0062 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm.sh @@ -48,7 +48,7 @@ resdir="" configs="" cpus=0 ds=`date +%Y.%m.%d-%H:%M:%S` -jitter=0 +jitter="-1" . functions.sh diff --git a/tools/testing/selftests/rcutorture/bin/parse-console.sh b/tools/testing/selftests/rcutorture/bin/parse-console.sh index 5eb49b7f864c..08aa7d50ae0e 100755 --- a/tools/testing/selftests/rcutorture/bin/parse-console.sh +++ b/tools/testing/selftests/rcutorture/bin/parse-console.sh @@ -33,7 +33,7 @@ if grep -Pq '\x00' < $file then print_warning Console output contains nul bytes, old qemu still running? fi -egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state' < $file | grep -v 'ODEBUG: ' | grep -v 'Warning: unable to open an initial console' > $1.diags +egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state|rcu_.*kthread starved for' < $file | grep -v 'ODEBUG: ' | grep -v 'Warning: unable to open an initial console' > $1.diags if test -s $1.diags then print_warning Assertion failure in $file $title @@ -69,6 +69,11 @@ then then summary="$summary Stalls: $n_stalls" fi + n_starves=`grep -c 'rcu_.*kthread starved for' $1` + if test "$n_starves" -ne 0 + then + summary="$summary Starves: $n_starves" + fi print_warning Summary: $summary else rm $1.diags diff --git a/tools/testing/selftests/rcutorture/doc/initrd.txt b/tools/testing/selftests/rcutorture/doc/initrd.txt index 4170e714f044..833f826d6ec2 100644 --- a/tools/testing/selftests/rcutorture/doc/initrd.txt +++ b/tools/testing/selftests/rcutorture/doc/initrd.txt @@ -13,6 +13,22 @@ cd initrd cpio -id < /tmp/initrd.img.zcat ------------------------------------------------------------------------ +Another way to create an initramfs image is using "dracut"[1], which is +available on many distros, however the initramfs dracut generates is a cpio +archive with another cpio archive in it, so an extra step is needed to create +the initrd directory hierarchy. + +Here are the commands to create a initrd directory for rcutorture using +dracut: + +------------------------------------------------------------------------ +dracut --no-hostonly --no-hostonly-cmdline --module "base bash shutdown" /tmp/initramfs.img +cd tools/testing/selftests/rcutorture +mkdir initrd +cd initrd +/usr/lib/dracut/skipcpio /tmp/initramfs.img | zcat | cpio -id < /tmp/initramfs.img +------------------------------------------------------------------------ + Interestingly enough, if you are running rcutorture, you don't really need userspace in many cases. Running without userspace has the advantage of allowing you to test your kernel independently of the @@ -89,3 +105,9 @@ while : do sleep 10 done +------------------------------------------------------------------------ + +References: +[1]: https://dracut.wiki.kernel.org/index.php/Main_Page +[2]: http://blog.elastocloud.org/2015/06/rapid-linux-kernel-devtest-with-qemu.html +[3]: https://www.centos.org/forums/viewtopic.php?t=51621 diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c index 7cf6e1769903..b9d34b37c017 100644 --- a/tools/vm/slabinfo.c +++ b/tools/vm/slabinfo.c @@ -510,10 +510,11 @@ static void slab_stats(struct slabinfo *s) s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total); } - if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) + if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) { printf("\nCmpxchg_double Looping\n------------------------\n"); printf("Locked Cmpxchg Double redos %lu\nUnlocked Cmpxchg Double redos %lu\n", s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail); + } } static void report(struct slabinfo *s) |