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-rw-r--r--tools/power/x86/turbostat/Makefile1
-rw-r--r--tools/power/x86/turbostat/turbostat.877
-rw-r--r--tools/power/x86/turbostat/turbostat.c1333
-rw-r--r--tools/testing/fault-injection/failcmd.sh219
-rwxr-xr-xtools/testing/ktest/ktest.pl167
-rw-r--r--tools/testing/ktest/sample.conf52
-rw-r--r--tools/testing/selftests/Makefile2
-rw-r--r--tools/testing/selftests/cpu-hotplug/Makefile6
-rw-r--r--tools/testing/selftests/cpu-hotplug/on-off-test.sh221
-rw-r--r--tools/testing/selftests/memory-hotplug/Makefile6
-rw-r--r--tools/testing/selftests/memory-hotplug/on-off-test.sh230
-rw-r--r--tools/usb/testusb.c21
-rw-r--r--tools/vm/slabinfo.c14
13 files changed, 1793 insertions, 556 deletions
diff --git a/tools/power/x86/turbostat/Makefile b/tools/power/x86/turbostat/Makefile
index fd8e1f1297aa..f85649554191 100644
--- a/tools/power/x86/turbostat/Makefile
+++ b/tools/power/x86/turbostat/Makefile
@@ -1,4 +1,5 @@
turbostat : turbostat.c
+CFLAGS += -Wall
clean :
rm -f turbostat
diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8
index adf175f61496..74e44507dfe9 100644
--- a/tools/power/x86/turbostat/turbostat.8
+++ b/tools/power/x86/turbostat/turbostat.8
@@ -27,7 +27,11 @@ supports an "invariant" TSC, plus the APERF and MPERF MSRs.
on processors that additionally support C-state residency counters.
.SS Options
-The \fB-s\fP option prints only a 1-line summary for each sample interval.
+The \fB-s\fP option limits output to a 1-line system summary for each interval.
+.PP
+The \fB-c\fP option limits output to the 1st thread in each core.
+.PP
+The \fB-p\fP option limits output to the 1st thread in each package.
.PP
The \fB-v\fP option increases verbosity.
.PP
@@ -65,19 +69,19 @@ Subsequent rows show per-CPU statistics.
.nf
[root@x980]# ./turbostat
cor CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
- 0.60 1.63 3.38 2.91 0.00 96.49 0.00 76.64
- 0 0 0.59 1.62 3.38 4.51 0.00 94.90 0.00 76.64
- 0 6 1.13 1.64 3.38 3.97 0.00 94.90 0.00 76.64
- 1 2 0.08 1.62 3.38 0.07 0.00 99.85 0.00 76.64
- 1 8 0.03 1.62 3.38 0.12 0.00 99.85 0.00 76.64
- 2 4 0.01 1.62 3.38 0.06 0.00 99.93 0.00 76.64
- 2 10 0.04 1.62 3.38 0.02 0.00 99.93 0.00 76.64
- 8 1 2.85 1.62 3.38 11.71 0.00 85.44 0.00 76.64
- 8 7 1.98 1.62 3.38 12.58 0.00 85.44 0.00 76.64
- 9 3 0.36 1.62 3.38 0.71 0.00 98.93 0.00 76.64
- 9 9 0.09 1.62 3.38 0.98 0.00 98.93 0.00 76.64
- 10 5 0.03 1.62 3.38 0.09 0.00 99.87 0.00 76.64
- 10 11 0.07 1.62 3.38 0.06 0.00 99.87 0.00 76.64
+ 0.09 1.62 3.38 1.83 0.32 97.76 1.26 83.61
+ 0 0 0.15 1.62 3.38 10.23 0.05 89.56 1.26 83.61
+ 0 6 0.05 1.62 3.38 10.34
+ 1 2 0.03 1.62 3.38 0.07 0.05 99.86
+ 1 8 0.03 1.62 3.38 0.06
+ 2 4 0.21 1.62 3.38 0.10 1.49 98.21
+ 2 10 0.02 1.62 3.38 0.29
+ 8 1 0.04 1.62 3.38 0.04 0.08 99.84
+ 8 7 0.01 1.62 3.38 0.06
+ 9 3 0.53 1.62 3.38 0.10 0.20 99.17
+ 9 9 0.02 1.62 3.38 0.60
+ 10 5 0.01 1.62 3.38 0.02 0.04 99.92
+ 10 11 0.02 1.62 3.38 0.02
.fi
.SH SUMMARY EXAMPLE
The "-s" option prints the column headers just once,
@@ -86,9 +90,10 @@ and then the one line system summary for each sample interval.
.nf
[root@x980]# ./turbostat -s
%c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
- 0.61 1.89 3.38 5.95 0.00 93.44 0.00 66.33
- 0.52 1.62 3.38 6.83 0.00 92.65 0.00 61.11
- 0.62 1.92 3.38 5.47 0.00 93.91 0.00 67.31
+ 0.23 1.67 3.38 2.00 0.30 97.47 1.07 82.12
+ 0.10 1.62 3.38 1.87 2.25 95.77 12.02 72.60
+ 0.20 1.64 3.38 1.98 0.11 97.72 0.30 83.36
+ 0.11 1.70 3.38 1.86 1.81 96.22 9.71 74.90
.fi
.SH VERBOSE EXAMPLE
The "-v" option adds verbosity to the output:
@@ -120,30 +125,28 @@ until ^C while the other CPUs are mostly idle:
[root@x980 lenb]# ./turbostat cat /dev/zero > /dev/null
^C
cor CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
- 8.63 3.64 3.38 14.46 0.49 76.42 0.00 0.00
- 0 0 0.34 3.36 3.38 99.66 0.00 0.00 0.00 0.00
- 0 6 99.96 3.64 3.38 0.04 0.00 0.00 0.00 0.00
- 1 2 0.14 3.50 3.38 1.75 2.04 96.07 0.00 0.00
- 1 8 0.38 3.57 3.38 1.51 2.04 96.07 0.00 0.00
- 2 4 0.01 2.65 3.38 0.06 0.00 99.93 0.00 0.00
- 2 10 0.03 2.12 3.38 0.04 0.00 99.93 0.00 0.00
- 8 1 0.91 3.59 3.38 35.27 0.92 62.90 0.00 0.00
- 8 7 1.61 3.63 3.38 34.57 0.92 62.90 0.00 0.00
- 9 3 0.04 3.38 3.38 0.20 0.00 99.76 0.00 0.00
- 9 9 0.04 3.29 3.38 0.20 0.00 99.76 0.00 0.00
- 10 5 0.03 3.08 3.38 0.12 0.00 99.85 0.00 0.00
- 10 11 0.05 3.07 3.38 0.10 0.00 99.85 0.00 0.00
-4.907015 sec
-
+ 8.86 3.61 3.38 15.06 31.19 44.89 0.00 0.00
+ 0 0 1.46 3.22 3.38 16.84 29.48 52.22 0.00 0.00
+ 0 6 0.21 3.06 3.38 18.09
+ 1 2 0.53 3.33 3.38 2.80 46.40 50.27
+ 1 8 0.89 3.47 3.38 2.44
+ 2 4 1.36 3.43 3.38 9.04 23.71 65.89
+ 2 10 0.18 2.86 3.38 10.22
+ 8 1 0.04 2.87 3.38 99.96 0.01 0.00
+ 8 7 99.72 3.63 3.38 0.27
+ 9 3 0.31 3.21 3.38 7.64 56.55 35.50
+ 9 9 0.08 2.95 3.38 7.88
+ 10 5 1.42 3.43 3.38 2.14 30.99 65.44
+ 10 11 0.16 2.88 3.38 3.40
.fi
-Above the cycle soaker drives cpu6 up 3.6 Ghz turbo limit
+Above the cycle soaker drives cpu7 up its 3.6 Ghz turbo limit
while the other processors are generally in various states of idle.
-Note that cpu0 is an HT sibling sharing core0
-with cpu6, and thus it is unable to get to an idle state
-deeper than c1 while cpu6 is busy.
+Note that cpu1 and cpu7 are HT siblings within core8.
+As cpu7 is very busy, it prevents its sibling, cpu1,
+from entering a c-state deeper than c1.
-Note that turbostat reports average GHz of 3.64, while
+Note that turbostat reports average GHz of 3.63, while
the arithmetic average of the GHz column above is lower.
This is a weighted average, where the weight is %c0. ie. it is the total number of
un-halted cycles elapsed per time divided by the number of CPUs.
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 16de7ad4850f..861d77190206 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -67,92 +67,119 @@ double bclk;
unsigned int show_pkg;
unsigned int show_core;
unsigned int show_cpu;
+unsigned int show_pkg_only;
+unsigned int show_core_only;
+char *output_buffer, *outp;
int aperf_mperf_unstable;
int backwards_count;
char *progname;
-int num_cpus;
-cpu_set_t *cpu_present_set, *cpu_mask;
-size_t cpu_present_setsize, cpu_mask_size;
-
-struct counters {
- unsigned long long tsc; /* per thread */
- unsigned long long aperf; /* per thread */
- unsigned long long mperf; /* per thread */
- unsigned long long c1; /* per thread (calculated) */
- unsigned long long c3; /* per core */
- unsigned long long c6; /* per core */
- unsigned long long c7; /* per core */
- unsigned long long pc2; /* per package */
- unsigned long long pc3; /* per package */
- unsigned long long pc6; /* per package */
- unsigned long long pc7; /* per package */
- unsigned long long extra_msr; /* per thread */
- int pkg;
- int core;
- int cpu;
- struct counters *next;
-};
-
-struct counters *cnt_even;
-struct counters *cnt_odd;
-struct counters *cnt_delta;
-struct counters *cnt_average;
-struct timeval tv_even;
-struct timeval tv_odd;
-struct timeval tv_delta;
-
-int mark_cpu_present(int pkg, int core, int cpu)
+cpu_set_t *cpu_present_set, *cpu_affinity_set;
+size_t cpu_present_setsize, cpu_affinity_setsize;
+
+struct thread_data {
+ unsigned long long tsc;
+ unsigned long long aperf;
+ unsigned long long mperf;
+ unsigned long long c1; /* derived */
+ unsigned long long extra_msr;
+ unsigned int cpu_id;
+ unsigned int flags;
+#define CPU_IS_FIRST_THREAD_IN_CORE 0x2
+#define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
+} *thread_even, *thread_odd;
+
+struct core_data {
+ unsigned long long c3;
+ unsigned long long c6;
+ unsigned long long c7;
+ unsigned int core_id;
+} *core_even, *core_odd;
+
+struct pkg_data {
+ unsigned long long pc2;
+ unsigned long long pc3;
+ unsigned long long pc6;
+ unsigned long long pc7;
+ unsigned int package_id;
+} *package_even, *package_odd;
+
+#define ODD_COUNTERS thread_odd, core_odd, package_odd
+#define EVEN_COUNTERS thread_even, core_even, package_even
+
+#define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
+ (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
+ topo.num_threads_per_core + \
+ (core_no) * topo.num_threads_per_core + (thread_no))
+#define GET_CORE(core_base, core_no, pkg_no) \
+ (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
+#define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
+
+struct system_summary {
+ struct thread_data threads;
+ struct core_data cores;
+ struct pkg_data packages;
+} sum, average;
+
+
+struct topo_params {
+ int num_packages;
+ int num_cpus;
+ int num_cores;
+ int max_cpu_num;
+ int num_cores_per_pkg;
+ int num_threads_per_core;
+} topo;
+
+struct timeval tv_even, tv_odd, tv_delta;
+
+void setup_all_buffers(void);
+
+int cpu_is_not_present(int cpu)
{
- CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
- return 0;
+ return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
}
-
/*
- * cpu_mask_init(ncpus)
- *
- * allocate and clear cpu_mask
- * set cpu_mask_size
+ * run func(thread, core, package) in topology order
+ * skip non-present cpus
*/
-void cpu_mask_init(int ncpus)
+
+int for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
+ struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
{
- cpu_mask = CPU_ALLOC(ncpus);
- if (cpu_mask == NULL) {
- perror("CPU_ALLOC");
- exit(3);
- }
- cpu_mask_size = CPU_ALLOC_SIZE(ncpus);
- CPU_ZERO_S(cpu_mask_size, cpu_mask);
+ int retval, pkg_no, core_no, thread_no;
- /*
- * Allocate and initialize cpu_present_set
- */
- cpu_present_set = CPU_ALLOC(ncpus);
- if (cpu_present_set == NULL) {
- perror("CPU_ALLOC");
- exit(3);
- }
- cpu_present_setsize = CPU_ALLOC_SIZE(ncpus);
- CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
- for_all_cpus(mark_cpu_present);
-}
+ for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
+ for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
+ for (thread_no = 0; thread_no <
+ topo.num_threads_per_core; ++thread_no) {
+ struct thread_data *t;
+ struct core_data *c;
+ struct pkg_data *p;
-void cpu_mask_uninit()
-{
- CPU_FREE(cpu_mask);
- cpu_mask = NULL;
- cpu_mask_size = 0;
- CPU_FREE(cpu_present_set);
- cpu_present_set = NULL;
- cpu_present_setsize = 0;
+ t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
+
+ if (cpu_is_not_present(t->cpu_id))
+ continue;
+
+ c = GET_CORE(core_base, core_no, pkg_no);
+ p = GET_PKG(pkg_base, pkg_no);
+
+ retval = func(t, c, p);
+ if (retval)
+ return retval;
+ }
+ }
+ }
+ return 0;
}
int cpu_migrate(int cpu)
{
- CPU_ZERO_S(cpu_mask_size, cpu_mask);
- CPU_SET_S(cpu, cpu_mask_size, cpu_mask);
- if (sched_setaffinity(0, cpu_mask_size, cpu_mask) == -1)
+ CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
+ CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
+ if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
return -1;
else
return 0;
@@ -181,67 +208,72 @@ int get_msr(int cpu, off_t offset, unsigned long long *msr)
void print_header(void)
{
if (show_pkg)
- fprintf(stderr, "pk");
+ outp += sprintf(outp, "pk");
if (show_pkg)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_core)
- fprintf(stderr, "cor");
+ outp += sprintf(outp, "cor");
if (show_cpu)
- fprintf(stderr, " CPU");
+ outp += sprintf(outp, " CPU");
if (show_pkg || show_core || show_cpu)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (do_nhm_cstates)
- fprintf(stderr, " %%c0");
+ outp += sprintf(outp, " %%c0");
if (has_aperf)
- fprintf(stderr, " GHz");
- fprintf(stderr, " TSC");
+ outp += sprintf(outp, " GHz");
+ outp += sprintf(outp, " TSC");
if (do_nhm_cstates)
- fprintf(stderr, " %%c1");
+ outp += sprintf(outp, " %%c1");
if (do_nhm_cstates)
- fprintf(stderr, " %%c3");
+ outp += sprintf(outp, " %%c3");
if (do_nhm_cstates)
- fprintf(stderr, " %%c6");
+ outp += sprintf(outp, " %%c6");
if (do_snb_cstates)
- fprintf(stderr, " %%c7");
+ outp += sprintf(outp, " %%c7");
if (do_snb_cstates)
- fprintf(stderr, " %%pc2");
+ outp += sprintf(outp, " %%pc2");
if (do_nhm_cstates)
- fprintf(stderr, " %%pc3");
+ outp += sprintf(outp, " %%pc3");
if (do_nhm_cstates)
- fprintf(stderr, " %%pc6");
+ outp += sprintf(outp, " %%pc6");
if (do_snb_cstates)
- fprintf(stderr, " %%pc7");
+ outp += sprintf(outp, " %%pc7");
if (extra_msr_offset)
- fprintf(stderr, " MSR 0x%x ", extra_msr_offset);
+ outp += sprintf(outp, " MSR 0x%x ", extra_msr_offset);
- putc('\n', stderr);
+ outp += sprintf(outp, "\n");
}
-void dump_cnt(struct counters *cnt)
+int dump_counters(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
{
- if (!cnt)
- return;
- if (cnt->pkg) fprintf(stderr, "package: %d ", cnt->pkg);
- if (cnt->core) fprintf(stderr, "core:: %d ", cnt->core);
- if (cnt->cpu) fprintf(stderr, "CPU: %d ", cnt->cpu);
- if (cnt->tsc) fprintf(stderr, "TSC: %016llX\n", cnt->tsc);
- if (cnt->c3) fprintf(stderr, "c3: %016llX\n", cnt->c3);
- if (cnt->c6) fprintf(stderr, "c6: %016llX\n", cnt->c6);
- if (cnt->c7) fprintf(stderr, "c7: %016llX\n", cnt->c7);
- if (cnt->aperf) fprintf(stderr, "aperf: %016llX\n", cnt->aperf);
- if (cnt->pc2) fprintf(stderr, "pc2: %016llX\n", cnt->pc2);
- if (cnt->pc3) fprintf(stderr, "pc3: %016llX\n", cnt->pc3);
- if (cnt->pc6) fprintf(stderr, "pc6: %016llX\n", cnt->pc6);
- if (cnt->pc7) fprintf(stderr, "pc7: %016llX\n", cnt->pc7);
- if (cnt->extra_msr) fprintf(stderr, "msr0x%x: %016llX\n", extra_msr_offset, cnt->extra_msr);
-}
+ fprintf(stderr, "t %p, c %p, p %p\n", t, c, p);
+
+ if (t) {
+ fprintf(stderr, "CPU: %d flags 0x%x\n", t->cpu_id, t->flags);
+ fprintf(stderr, "TSC: %016llX\n", t->tsc);
+ fprintf(stderr, "aperf: %016llX\n", t->aperf);
+ fprintf(stderr, "mperf: %016llX\n", t->mperf);
+ fprintf(stderr, "c1: %016llX\n", t->c1);
+ fprintf(stderr, "msr0x%x: %016llX\n",
+ extra_msr_offset, t->extra_msr);
+ }
-void dump_list(struct counters *cnt)
-{
- printf("dump_list 0x%p\n", cnt);
+ if (c) {
+ fprintf(stderr, "core: %d\n", c->core_id);
+ fprintf(stderr, "c3: %016llX\n", c->c3);
+ fprintf(stderr, "c6: %016llX\n", c->c6);
+ fprintf(stderr, "c7: %016llX\n", c->c7);
+ }
- for (; cnt; cnt = cnt->next)
- dump_cnt(cnt);
+ if (p) {
+ fprintf(stderr, "package: %d\n", p->package_id);
+ fprintf(stderr, "pc2: %016llX\n", p->pc2);
+ fprintf(stderr, "pc3: %016llX\n", p->pc3);
+ fprintf(stderr, "pc6: %016llX\n", p->pc6);
+ fprintf(stderr, "pc7: %016llX\n", p->pc7);
+ }
+ return 0;
}
/*
@@ -253,321 +285,389 @@ void dump_list(struct counters *cnt)
* TSC: "TSC" 3 columns %3.2
* percentage " %pc3" %6.2
*/
-void print_cnt(struct counters *p)
+int format_counters(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
{
double interval_float;
+ /* if showing only 1st thread in core and this isn't one, bail out */
+ if (show_core_only && !(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ return 0;
+
+ /* if showing only 1st thread in pkg and this isn't one, bail out */
+ if (show_pkg_only && !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ return 0;
+
interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
- /* topology columns, print blanks on 1st (average) line */
- if (p == cnt_average) {
+ /* topo columns, print blanks on 1st (average) line */
+ if (t == &average.threads) {
if (show_pkg)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_pkg && show_core)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_core)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_cpu)
- fprintf(stderr, " " " ");
+ outp += sprintf(outp, " " " ");
} else {
- if (show_pkg)
- fprintf(stderr, "%2d", p->pkg);
+ if (show_pkg) {
+ if (p)
+ outp += sprintf(outp, "%2d", p->package_id);
+ else
+ outp += sprintf(outp, " ");
+ }
if (show_pkg && show_core)
- fprintf(stderr, " ");
- if (show_core)
- fprintf(stderr, "%3d", p->core);
+ outp += sprintf(outp, " ");
+ if (show_core) {
+ if (c)
+ outp += sprintf(outp, "%3d", c->core_id);
+ else
+ outp += sprintf(outp, " ");
+ }
if (show_cpu)
- fprintf(stderr, " %3d", p->cpu);
+ outp += sprintf(outp, " %3d", t->cpu_id);
}
/* %c0 */
if (do_nhm_cstates) {
if (show_pkg || show_core || show_cpu)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (!skip_c0)
- fprintf(stderr, "%6.2f", 100.0 * p->mperf/p->tsc);
+ outp += sprintf(outp, "%6.2f", 100.0 * t->mperf/t->tsc);
else
- fprintf(stderr, " ****");
+ outp += sprintf(outp, " ****");
}
/* GHz */
if (has_aperf) {
if (!aperf_mperf_unstable) {
- fprintf(stderr, " %3.2f",
- 1.0 * p->tsc / units * p->aperf /
- p->mperf / interval_float);
+ outp += sprintf(outp, " %3.2f",
+ 1.0 * t->tsc / units * t->aperf /
+ t->mperf / interval_float);
} else {
- if (p->aperf > p->tsc || p->mperf > p->tsc) {
- fprintf(stderr, " ***");
+ if (t->aperf > t->tsc || t->mperf > t->tsc) {
+ outp += sprintf(outp, " ***");
} else {
- fprintf(stderr, "%3.1f*",
- 1.0 * p->tsc /
- units * p->aperf /
- p->mperf / interval_float);
+ outp += sprintf(outp, "%3.1f*",
+ 1.0 * t->tsc /
+ units * t->aperf /
+ t->mperf / interval_float);
}
}
}
/* TSC */
- fprintf(stderr, "%5.2f", 1.0 * p->tsc/units/interval_float);
+ outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);
if (do_nhm_cstates) {
if (!skip_c1)
- fprintf(stderr, " %6.2f", 100.0 * p->c1/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * t->c1/t->tsc);
else
- fprintf(stderr, " ****");
+ outp += sprintf(outp, " ****");
}
+
+ /* print per-core data only for 1st thread in core */
+ if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ goto done;
+
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->c3/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc);
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->c6/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * c->c6/t->tsc);
if (do_snb_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->c7/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * c->c7/t->tsc);
+
+ /* print per-package data only for 1st core in package */
+ if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ goto done;
+
if (do_snb_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc2/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc);
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc3/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/t->tsc);
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc6/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc6/t->tsc);
if (do_snb_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc7/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc);
+done:
if (extra_msr_offset)
- fprintf(stderr, " 0x%016llx", p->extra_msr);
- putc('\n', stderr);
+ outp += sprintf(outp, " 0x%016llx", t->extra_msr);
+ outp += sprintf(outp, "\n");
+
+ return 0;
}
-void print_counters(struct counters *counters)
+void flush_stdout()
+{
+ fputs(output_buffer, stdout);
+ outp = output_buffer;
+}
+void flush_stderr()
+{
+ fputs(output_buffer, stderr);
+ outp = output_buffer;
+}
+void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
- struct counters *cnt;
static int printed;
-
if (!printed || !summary_only)
print_header();
- if (num_cpus > 1)
- print_cnt(cnt_average);
+ if (topo.num_cpus > 1)
+ format_counters(&average.threads, &average.cores,
+ &average.packages);
printed = 1;
if (summary_only)
return;
- for (cnt = counters; cnt != NULL; cnt = cnt->next)
- print_cnt(cnt);
-
+ for_all_cpus(format_counters, t, c, p);
}
-#define SUBTRACT_COUNTER(after, before, delta) (delta = (after - before), (before > after))
+void
+delta_package(struct pkg_data *new, struct pkg_data *old)
+{
+ old->pc2 = new->pc2 - old->pc2;
+ old->pc3 = new->pc3 - old->pc3;
+ old->pc6 = new->pc6 - old->pc6;
+ old->pc7 = new->pc7 - old->pc7;
+}
-int compute_delta(struct counters *after,
- struct counters *before, struct counters *delta)
+void
+delta_core(struct core_data *new, struct core_data *old)
{
- int errors = 0;
- int perf_err = 0;
+ old->c3 = new->c3 - old->c3;
+ old->c6 = new->c6 - old->c6;
+ old->c7 = new->c7 - old->c7;
+}
- skip_c0 = skip_c1 = 0;
+/*
+ * old = new - old
+ */
+void
+delta_thread(struct thread_data *new, struct thread_data *old,
+ struct core_data *core_delta)
+{
+ old->tsc = new->tsc - old->tsc;
+
+ /* check for TSC < 1 Mcycles over interval */
+ if (old->tsc < (1000 * 1000)) {
+ fprintf(stderr, "Insanely slow TSC rate, TSC stops in idle?\n");
+ fprintf(stderr, "You can disable all c-states by booting with \"idle=poll\"\n");
+ fprintf(stderr, "or just the deep ones with \"processor.max_cstate=1\"\n");
+ exit(-3);
+ }
- for ( ; after && before && delta;
- after = after->next, before = before->next, delta = delta->next) {
- if (before->cpu != after->cpu) {
- printf("cpu configuration changed: %d != %d\n",
- before->cpu, after->cpu);
- return -1;
- }
+ old->c1 = new->c1 - old->c1;
- if (SUBTRACT_COUNTER(after->tsc, before->tsc, delta->tsc)) {
- fprintf(stderr, "cpu%d TSC went backwards %llX to %llX\n",
- before->cpu, before->tsc, after->tsc);
- errors++;
- }
- /* check for TSC < 1 Mcycles over interval */
- if (delta->tsc < (1000 * 1000)) {
- fprintf(stderr, "Insanely slow TSC rate,"
- " TSC stops in idle?\n");
- fprintf(stderr, "You can disable all c-states"
- " by booting with \"idle=poll\"\n");
- fprintf(stderr, "or just the deep ones with"
- " \"processor.max_cstate=1\"\n");
- exit(-3);
- }
- if (SUBTRACT_COUNTER(after->c3, before->c3, delta->c3)) {
- fprintf(stderr, "cpu%d c3 counter went backwards %llX to %llX\n",
- before->cpu, before->c3, after->c3);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->c6, before->c6, delta->c6)) {
- fprintf(stderr, "cpu%d c6 counter went backwards %llX to %llX\n",
- before->cpu, before->c6, after->c6);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->c7, before->c7, delta->c7)) {
- fprintf(stderr, "cpu%d c7 counter went backwards %llX to %llX\n",
- before->cpu, before->c7, after->c7);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc2, before->pc2, delta->pc2)) {
- fprintf(stderr, "cpu%d pc2 counter went backwards %llX to %llX\n",
- before->cpu, before->pc2, after->pc2);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc3, before->pc3, delta->pc3)) {
- fprintf(stderr, "cpu%d pc3 counter went backwards %llX to %llX\n",
- before->cpu, before->pc3, after->pc3);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc6, before->pc6, delta->pc6)) {
- fprintf(stderr, "cpu%d pc6 counter went backwards %llX to %llX\n",
- before->cpu, before->pc6, after->pc6);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc7, before->pc7, delta->pc7)) {
- fprintf(stderr, "cpu%d pc7 counter went backwards %llX to %llX\n",
- before->cpu, before->pc7, after->pc7);
- errors++;
- }
+ if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
+ old->aperf = new->aperf - old->aperf;
+ old->mperf = new->mperf - old->mperf;
+ } else {
- perf_err = SUBTRACT_COUNTER(after->aperf, before->aperf, delta->aperf);
- if (perf_err) {
- fprintf(stderr, "cpu%d aperf counter went backwards %llX to %llX\n",
- before->cpu, before->aperf, after->aperf);
- }
- perf_err |= SUBTRACT_COUNTER(after->mperf, before->mperf, delta->mperf);
- if (perf_err) {
- fprintf(stderr, "cpu%d mperf counter went backwards %llX to %llX\n",
- before->cpu, before->mperf, after->mperf);
- }
- if (perf_err) {
- if (!aperf_mperf_unstable) {
- fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
- fprintf(stderr, "* Frequency results do not cover entire interval *\n");
- fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
+ if (!aperf_mperf_unstable) {
+ fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
+ fprintf(stderr, "* Frequency results do not cover entire interval *\n");
+ fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
- aperf_mperf_unstable = 1;
- }
- /*
- * mperf delta is likely a huge "positive" number
- * can not use it for calculating c0 time
- */
- skip_c0 = 1;
- skip_c1 = 1;
+ aperf_mperf_unstable = 1;
}
-
/*
- * As mperf and tsc collection are not atomic,
- * it is possible for mperf's non-halted cycles
- * to exceed TSC's all cycles: show c1 = 0% in that case.
+ * mperf delta is likely a huge "positive" number
+ * can not use it for calculating c0 time
*/
- if (delta->mperf > delta->tsc)
- delta->c1 = 0;
- else /* normal case, derive c1 */
- delta->c1 = delta->tsc - delta->mperf
- - delta->c3 - delta->c6 - delta->c7;
+ skip_c0 = 1;
+ skip_c1 = 1;
+ }
- if (delta->mperf == 0)
- delta->mperf = 1; /* divide by 0 protection */
- /*
- * for "extra msr", just copy the latest w/o subtracting
- */
- delta->extra_msr = after->extra_msr;
- if (errors) {
- fprintf(stderr, "ERROR cpu%d before:\n", before->cpu);
- dump_cnt(before);
- fprintf(stderr, "ERROR cpu%d after:\n", before->cpu);
- dump_cnt(after);
- errors = 0;
- }
+ /*
+ * As counter collection is not atomic,
+ * it is possible for mperf's non-halted cycles + idle states
+ * to exceed TSC's all cycles: show c1 = 0% in that case.
+ */
+ if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
+ old->c1 = 0;
+ else {
+ /* normal case, derive c1 */
+ old->c1 = old->tsc - old->mperf - core_delta->c3
+ - core_delta->c6 - core_delta->c7;
}
+
+ if (old->mperf == 0) {
+ if (verbose > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id);
+ old->mperf = 1; /* divide by 0 protection */
+ }
+
+ /*
+ * for "extra msr", just copy the latest w/o subtracting
+ */
+ old->extra_msr = new->extra_msr;
+}
+
+int delta_cpu(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p, struct thread_data *t2,
+ struct core_data *c2, struct pkg_data *p2)
+{
+ /* calculate core delta only for 1st thread in core */
+ if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
+ delta_core(c, c2);
+
+ /* always calculate thread delta */
+ delta_thread(t, t2, c2); /* c2 is core delta */
+
+ /* calculate package delta only for 1st core in package */
+ if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
+ delta_package(p, p2);
+
return 0;
}
-void compute_average(struct counters *delta, struct counters *avg)
+void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
+{
+ t->tsc = 0;
+ t->aperf = 0;
+ t->mperf = 0;
+ t->c1 = 0;
+
+ /* tells format_counters to dump all fields from this set */
+ t->flags = CPU_IS_FIRST_THREAD_IN_CORE | CPU_IS_FIRST_CORE_IN_PACKAGE;
+
+ c->c3 = 0;
+ c->c6 = 0;
+ c->c7 = 0;
+
+ p->pc2 = 0;
+ p->pc3 = 0;
+ p->pc6 = 0;
+ p->pc7 = 0;
+}
+int sum_counters(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
{
- struct counters *sum;
+ average.threads.tsc += t->tsc;
+ average.threads.aperf += t->aperf;
+ average.threads.mperf += t->mperf;
+ average.threads.c1 += t->c1;
- sum = calloc(1, sizeof(struct counters));
- if (sum == NULL) {
- perror("calloc sum");
- exit(1);
- }
+ /* sum per-core values only for 1st thread in core */
+ if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ return 0;
- for (; delta; delta = delta->next) {
- sum->tsc += delta->tsc;
- sum->c1 += delta->c1;
- sum->c3 += delta->c3;
- sum->c6 += delta->c6;
- sum->c7 += delta->c7;
- sum->aperf += delta->aperf;
- sum->mperf += delta->mperf;
- sum->pc2 += delta->pc2;
- sum->pc3 += delta->pc3;
- sum->pc6 += delta->pc6;
- sum->pc7 += delta->pc7;
- }
- avg->tsc = sum->tsc/num_cpus;
- avg->c1 = sum->c1/num_cpus;
- avg->c3 = sum->c3/num_cpus;
- avg->c6 = sum->c6/num_cpus;
- avg->c7 = sum->c7/num_cpus;
- avg->aperf = sum->aperf/num_cpus;
- avg->mperf = sum->mperf/num_cpus;
- avg->pc2 = sum->pc2/num_cpus;
- avg->pc3 = sum->pc3/num_cpus;
- avg->pc6 = sum->pc6/num_cpus;
- avg->pc7 = sum->pc7/num_cpus;
-
- free(sum);
+ average.cores.c3 += c->c3;
+ average.cores.c6 += c->c6;
+ average.cores.c7 += c->c7;
+
+ /* sum per-pkg values only for 1st core in pkg */
+ if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ return 0;
+
+ average.packages.pc2 += p->pc2;
+ average.packages.pc3 += p->pc3;
+ average.packages.pc6 += p->pc6;
+ average.packages.pc7 += p->pc7;
+
+ return 0;
+}
+/*
+ * sum the counters for all cpus in the system
+ * compute the weighted average
+ */
+void compute_average(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
+{
+ clear_counters(&average.threads, &average.cores, &average.packages);
+
+ for_all_cpus(sum_counters, t, c, p);
+
+ average.threads.tsc /= topo.num_cpus;
+ average.threads.aperf /= topo.num_cpus;
+ average.threads.mperf /= topo.num_cpus;
+ average.threads.c1 /= topo.num_cpus;
+
+ average.cores.c3 /= topo.num_cores;
+ average.cores.c6 /= topo.num_cores;
+ average.cores.c7 /= topo.num_cores;
+
+ average.packages.pc2 /= topo.num_packages;
+ average.packages.pc3 /= topo.num_packages;
+ average.packages.pc6 /= topo.num_packages;
+ average.packages.pc7 /= topo.num_packages;
}
-int get_counters(struct counters *cnt)
+static unsigned long long rdtsc(void)
{
- for ( ; cnt; cnt = cnt->next) {
+ unsigned int low, high;
- if (cpu_migrate(cnt->cpu))
- return -1;
+ asm volatile("rdtsc" : "=a" (low), "=d" (high));
- if (get_msr(cnt->cpu, MSR_TSC, &cnt->tsc))
- return -1;
+ return low | ((unsigned long long)high) << 32;
+}
- if (has_aperf) {
- if (get_msr(cnt->cpu, MSR_APERF, &cnt->aperf))
- return -1;
- if (get_msr(cnt->cpu, MSR_MPERF, &cnt->mperf))
- return -1;
- }
- if (do_nhm_cstates) {
- if (get_msr(cnt->cpu, MSR_CORE_C3_RESIDENCY, &cnt->c3))
- return -1;
- if (get_msr(cnt->cpu, MSR_CORE_C6_RESIDENCY, &cnt->c6))
- return -1;
- }
+/*
+ * get_counters(...)
+ * migrate to cpu
+ * acquire and record local counters for that cpu
+ */
+int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
+{
+ int cpu = t->cpu_id;
- if (do_snb_cstates)
- if (get_msr(cnt->cpu, MSR_CORE_C7_RESIDENCY, &cnt->c7))
- return -1;
+ if (cpu_migrate(cpu))
+ return -1;
- if (do_nhm_cstates) {
- if (get_msr(cnt->cpu, MSR_PKG_C3_RESIDENCY, &cnt->pc3))
- return -1;
- if (get_msr(cnt->cpu, MSR_PKG_C6_RESIDENCY, &cnt->pc6))
- return -1;
- }
- if (do_snb_cstates) {
- if (get_msr(cnt->cpu, MSR_PKG_C2_RESIDENCY, &cnt->pc2))
- return -1;
- if (get_msr(cnt->cpu, MSR_PKG_C7_RESIDENCY, &cnt->pc7))
- return -1;
- }
- if (extra_msr_offset)
- if (get_msr(cnt->cpu, extra_msr_offset, &cnt->extra_msr))
- return -1;
+ t->tsc = rdtsc(); /* we are running on local CPU of interest */
+
+ if (has_aperf) {
+ if (get_msr(cpu, MSR_APERF, &t->aperf))
+ return -3;
+ if (get_msr(cpu, MSR_MPERF, &t->mperf))
+ return -4;
+ }
+
+ if (extra_msr_offset)
+ if (get_msr(cpu, extra_msr_offset, &t->extra_msr))
+ return -5;
+
+ /* collect core counters only for 1st thread in core */
+ if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ return 0;
+
+ if (do_nhm_cstates) {
+ if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
+ return -6;
+ if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
+ return -7;
+ }
+
+ if (do_snb_cstates)
+ if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
+ return -8;
+
+ /* collect package counters only for 1st core in package */
+ if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ return 0;
+
+ if (do_nhm_cstates) {
+ if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
+ return -9;
+ if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
+ return -10;
+ }
+ if (do_snb_cstates) {
+ if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
+ return -11;
+ if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
+ return -12;
}
return 0;
}
-void print_nehalem_info(void)
+void print_verbose_header(void)
{
unsigned long long msr;
unsigned int ratio;
@@ -615,143 +715,82 @@ void print_nehalem_info(void)
}
-void free_counter_list(struct counters *list)
+void free_all_buffers(void)
{
- struct counters *p;
+ CPU_FREE(cpu_present_set);
+ cpu_present_set = NULL;
+ cpu_present_set = 0;
- for (p = list; p; ) {
- struct counters *free_me;
+ CPU_FREE(cpu_affinity_set);
+ cpu_affinity_set = NULL;
+ cpu_affinity_setsize = 0;
- free_me = p;
- p = p->next;
- free(free_me);
- }
-}
+ free(thread_even);
+ free(core_even);
+ free(package_even);
-void free_all_counters(void)
-{
- free_counter_list(cnt_even);
- cnt_even = NULL;
+ thread_even = NULL;
+ core_even = NULL;
+ package_even = NULL;
- free_counter_list(cnt_odd);
- cnt_odd = NULL;
+ free(thread_odd);
+ free(core_odd);
+ free(package_odd);
- free_counter_list(cnt_delta);
- cnt_delta = NULL;
+ thread_odd = NULL;
+ core_odd = NULL;
+ package_odd = NULL;
- free_counter_list(cnt_average);
- cnt_average = NULL;
+ free(output_buffer);
+ output_buffer = NULL;
+ outp = NULL;
}
-void insert_counters(struct counters **list,
- struct counters *new)
+/*
+ * cpu_is_first_sibling_in_core(cpu)
+ * return 1 if given CPU is 1st HT sibling in the core
+ */
+int cpu_is_first_sibling_in_core(int cpu)
{
- struct counters *prev;
-
- /*
- * list was empty
- */
- if (*list == NULL) {
- new->next = *list;
- *list = new;
- return;
- }
-
- if (!summary_only)
- show_cpu = 1; /* there is more than one CPU */
-
- /*
- * insert on front of list.
- * It is sorted by ascending package#, core#, cpu#
- */
- if (((*list)->pkg > new->pkg) ||
- (((*list)->pkg == new->pkg) && ((*list)->core > new->core)) ||
- (((*list)->pkg == new->pkg) && ((*list)->core == new->core) && ((*list)->cpu > new->cpu))) {
- new->next = *list;
- *list = new;
- return;
- }
-
- prev = *list;
-
- while (prev->next && (prev->next->pkg < new->pkg)) {
- prev = prev->next;
- if (!summary_only)
- show_pkg = 1; /* there is more than 1 package */
- }
-
- while (prev->next && (prev->next->pkg == new->pkg)
- && (prev->next->core < new->core)) {
- prev = prev->next;
- if (!summary_only)
- show_core = 1; /* there is more than 1 core */
- }
+ char path[64];
+ FILE *filep;
+ int first_cpu;
- while (prev->next && (prev->next->pkg == new->pkg)
- && (prev->next->core == new->core)
- && (prev->next->cpu < new->cpu)) {
- prev = prev->next;
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
+ exit(1);
}
-
- /*
- * insert after "prev"
- */
- new->next = prev->next;
- prev->next = new;
+ fscanf(filep, "%d", &first_cpu);
+ fclose(filep);
+ return (cpu == first_cpu);
}
-void alloc_new_counters(int pkg, int core, int cpu)
+/*
+ * cpu_is_first_core_in_package(cpu)
+ * return 1 if given CPU is 1st core in package
+ */
+int cpu_is_first_core_in_package(int cpu)
{
- struct counters *new;
-
- if (verbose > 1)
- printf("pkg%d core%d, cpu%d\n", pkg, core, cpu);
-
- new = (struct counters *)calloc(1, sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
- exit(1);
- }
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- insert_counters(&cnt_odd, new);
-
- new = (struct counters *)calloc(1,
- sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
- exit(1);
- }
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- insert_counters(&cnt_even, new);
-
- new = (struct counters *)calloc(1, sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
- exit(1);
- }
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- insert_counters(&cnt_delta, new);
+ char path[64];
+ FILE *filep;
+ int first_cpu;
- new = (struct counters *)calloc(1, sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
exit(1);
}
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- cnt_average = new;
+ fscanf(filep, "%d", &first_cpu);
+ fclose(filep);
+ return (cpu == first_cpu);
}
int get_physical_package_id(int cpu)
{
- char path[64];
+ char path[80];
FILE *filep;
int pkg;
@@ -768,7 +807,7 @@ int get_physical_package_id(int cpu)
int get_core_id(int cpu)
{
- char path[64];
+ char path[80];
FILE *filep;
int core;
@@ -783,14 +822,87 @@ int get_core_id(int cpu)
return core;
}
+int get_num_ht_siblings(int cpu)
+{
+ char path[80];
+ FILE *filep;
+ int sib1, sib2;
+ int matches;
+ char character;
+
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
+ exit(1);
+ }
+ /*
+ * file format:
+ * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
+ * otherwinse 1 sibling (self).
+ */
+ matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
+
+ fclose(filep);
+
+ if (matches == 3)
+ return 2;
+ else
+ return 1;
+}
+
/*
- * run func(pkg, core, cpu) on every cpu in /proc/stat
+ * run func(thread, core, package) in topology order
+ * skip non-present cpus
*/
-int for_all_cpus(void (func)(int, int, int))
+int for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
+ struct pkg_data *, struct thread_data *, struct core_data *,
+ struct pkg_data *), struct thread_data *thread_base,
+ struct core_data *core_base, struct pkg_data *pkg_base,
+ struct thread_data *thread_base2, struct core_data *core_base2,
+ struct pkg_data *pkg_base2)
+{
+ int retval, pkg_no, core_no, thread_no;
+
+ for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
+ for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
+ for (thread_no = 0; thread_no <
+ topo.num_threads_per_core; ++thread_no) {
+ struct thread_data *t, *t2;
+ struct core_data *c, *c2;
+ struct pkg_data *p, *p2;
+
+ t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
+
+ if (cpu_is_not_present(t->cpu_id))
+ continue;
+
+ t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
+
+ c = GET_CORE(core_base, core_no, pkg_no);
+ c2 = GET_CORE(core_base2, core_no, pkg_no);
+
+ p = GET_PKG(pkg_base, pkg_no);
+ p2 = GET_PKG(pkg_base2, pkg_no);
+
+ retval = func(t, c, p, t2, c2, p2);
+ if (retval)
+ return retval;
+ }
+ }
+ }
+ return 0;
+}
+
+/*
+ * run func(cpu) on every cpu in /proc/stat
+ * return max_cpu number
+ */
+int for_all_proc_cpus(int (func)(int))
{
FILE *fp;
- int cpu_count;
+ int cpu_num;
int retval;
fp = fopen(proc_stat, "r");
@@ -805,78 +917,88 @@ int for_all_cpus(void (func)(int, int, int))
exit(1);
}
- for (cpu_count = 0; ; cpu_count++) {
- int cpu;
-
- retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu);
+ while (1) {
+ retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
if (retval != 1)
break;
- func(get_physical_package_id(cpu), get_core_id(cpu), cpu);
+ retval = func(cpu_num);
+ if (retval) {
+ fclose(fp);
+ return(retval);
+ }
}
fclose(fp);
- return cpu_count;
+ return 0;
}
void re_initialize(void)
{
- free_all_counters();
- num_cpus = for_all_cpus(alloc_new_counters);
- cpu_mask_uninit();
- cpu_mask_init(num_cpus);
- printf("turbostat: re-initialized with num_cpus %d\n", num_cpus);
+ free_all_buffers();
+ setup_all_buffers();
+ printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus);
}
-void dummy(int pkg, int core, int cpu) { return; }
+
/*
- * check to see if a cpu came on-line
+ * count_cpus()
+ * remember the last one seen, it will be the max
*/
-int verify_num_cpus(void)
+int count_cpus(int cpu)
{
- int new_num_cpus;
-
- new_num_cpus = for_all_cpus(dummy);
+ if (topo.max_cpu_num < cpu)
+ topo.max_cpu_num = cpu;
- if (new_num_cpus != num_cpus) {
- if (verbose)
- printf("num_cpus was %d, is now %d\n",
- num_cpus, new_num_cpus);
- return -1;
- }
+ topo.num_cpus += 1;
+ return 0;
+}
+int mark_cpu_present(int cpu)
+{
+ CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
return 0;
}
void turbostat_loop()
{
+ int retval;
+
restart:
- get_counters(cnt_even);
+ retval = for_all_cpus(get_counters, EVEN_COUNTERS);
+ if (retval) {
+ re_initialize();
+ goto restart;
+ }
gettimeofday(&tv_even, (struct timezone *)NULL);
while (1) {
- if (verify_num_cpus()) {
+ if (for_all_proc_cpus(cpu_is_not_present)) {
re_initialize();
goto restart;
}
sleep(interval_sec);
- if (get_counters(cnt_odd)) {
+ retval = for_all_cpus(get_counters, ODD_COUNTERS);
+ if (retval) {
re_initialize();
goto restart;
}
gettimeofday(&tv_odd, (struct timezone *)NULL);
- compute_delta(cnt_odd, cnt_even, cnt_delta);
timersub(&tv_odd, &tv_even, &tv_delta);
- compute_average(cnt_delta, cnt_average);
- print_counters(cnt_delta);
+ for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
+ compute_average(EVEN_COUNTERS);
+ format_all_counters(EVEN_COUNTERS);
+ flush_stdout();
sleep(interval_sec);
- if (get_counters(cnt_even)) {
+ retval = for_all_cpus(get_counters, EVEN_COUNTERS);
+ if (retval) {
re_initialize();
goto restart;
}
gettimeofday(&tv_even, (struct timezone *)NULL);
- compute_delta(cnt_even, cnt_odd, cnt_delta);
timersub(&tv_even, &tv_odd, &tv_delta);
- compute_average(cnt_delta, cnt_average);
- print_counters(cnt_delta);
+ for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS);
+ compute_average(ODD_COUNTERS);
+ format_all_counters(ODD_COUNTERS);
+ flush_stdout();
}
}
@@ -1051,6 +1173,208 @@ int open_dev_cpu_msr(int dummy1)
return 0;
}
+void topology_probe()
+{
+ int i;
+ int max_core_id = 0;
+ int max_package_id = 0;
+ int max_siblings = 0;
+ struct cpu_topology {
+ int core_id;
+ int physical_package_id;
+ } *cpus;
+
+ /* Initialize num_cpus, max_cpu_num */
+ topo.num_cpus = 0;
+ topo.max_cpu_num = 0;
+ for_all_proc_cpus(count_cpus);
+ if (!summary_only && topo.num_cpus > 1)
+ show_cpu = 1;
+
+ if (verbose > 1)
+ fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
+
+ cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
+ if (cpus == NULL) {
+ perror("calloc cpus");
+ exit(1);
+ }
+
+ /*
+ * Allocate and initialize cpu_present_set
+ */
+ cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
+ if (cpu_present_set == NULL) {
+ perror("CPU_ALLOC");
+ exit(3);
+ }
+ cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
+ CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
+ for_all_proc_cpus(mark_cpu_present);
+
+ /*
+ * Allocate and initialize cpu_affinity_set
+ */
+ cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
+ if (cpu_affinity_set == NULL) {
+ perror("CPU_ALLOC");
+ exit(3);
+ }
+ cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
+ CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
+
+
+ /*
+ * For online cpus
+ * find max_core_id, max_package_id
+ */
+ for (i = 0; i <= topo.max_cpu_num; ++i) {
+ int siblings;
+
+ if (cpu_is_not_present(i)) {
+ if (verbose > 1)
+ fprintf(stderr, "cpu%d NOT PRESENT\n", i);
+ continue;
+ }
+ cpus[i].core_id = get_core_id(i);
+ if (cpus[i].core_id > max_core_id)
+ max_core_id = cpus[i].core_id;
+
+ cpus[i].physical_package_id = get_physical_package_id(i);
+ if (cpus[i].physical_package_id > max_package_id)
+ max_package_id = cpus[i].physical_package_id;
+
+ siblings = get_num_ht_siblings(i);
+ if (siblings > max_siblings)
+ max_siblings = siblings;
+ if (verbose > 1)
+ fprintf(stderr, "cpu %d pkg %d core %d\n",
+ i, cpus[i].physical_package_id, cpus[i].core_id);
+ }
+ topo.num_cores_per_pkg = max_core_id + 1;
+ if (verbose > 1)
+ fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n",
+ max_core_id, topo.num_cores_per_pkg);
+ if (!summary_only && topo.num_cores_per_pkg > 1)
+ show_core = 1;
+
+ topo.num_packages = max_package_id + 1;
+ if (verbose > 1)
+ fprintf(stderr, "max_package_id %d, sizing for %d packages\n",
+ max_package_id, topo.num_packages);
+ if (!summary_only && topo.num_packages > 1)
+ show_pkg = 1;
+
+ topo.num_threads_per_core = max_siblings;
+ if (verbose > 1)
+ fprintf(stderr, "max_siblings %d\n", max_siblings);
+
+ free(cpus);
+}
+
+void
+allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
+{
+ int i;
+
+ *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
+ topo.num_packages, sizeof(struct thread_data));
+ if (*t == NULL)
+ goto error;
+
+ for (i = 0; i < topo.num_threads_per_core *
+ topo.num_cores_per_pkg * topo.num_packages; i++)
+ (*t)[i].cpu_id = -1;
+
+ *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
+ sizeof(struct core_data));
+ if (*c == NULL)
+ goto error;
+
+ for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
+ (*c)[i].core_id = -1;
+
+ *p = calloc(topo.num_packages, sizeof(struct pkg_data));
+ if (*p == NULL)
+ goto error;
+
+ for (i = 0; i < topo.num_packages; i++)
+ (*p)[i].package_id = i;
+
+ return;
+error:
+ perror("calloc counters");
+ exit(1);
+}
+/*
+ * init_counter()
+ *
+ * set cpu_id, core_num, pkg_num
+ * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
+ *
+ * increment topo.num_cores when 1st core in pkg seen
+ */
+void init_counter(struct thread_data *thread_base, struct core_data *core_base,
+ struct pkg_data *pkg_base, int thread_num, int core_num,
+ int pkg_num, int cpu_id)
+{
+ struct thread_data *t;
+ struct core_data *c;
+ struct pkg_data *p;
+
+ t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
+ c = GET_CORE(core_base, core_num, pkg_num);
+ p = GET_PKG(pkg_base, pkg_num);
+
+ t->cpu_id = cpu_id;
+ if (thread_num == 0) {
+ t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
+ if (cpu_is_first_core_in_package(cpu_id))
+ t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
+ }
+
+ c->core_id = core_num;
+ p->package_id = pkg_num;
+}
+
+
+int initialize_counters(int cpu_id)
+{
+ int my_thread_id, my_core_id, my_package_id;
+
+ my_package_id = get_physical_package_id(cpu_id);
+ my_core_id = get_core_id(cpu_id);
+
+ if (cpu_is_first_sibling_in_core(cpu_id)) {
+ my_thread_id = 0;
+ topo.num_cores++;
+ } else {
+ my_thread_id = 1;
+ }
+
+ init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
+ init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
+ return 0;
+}
+
+void allocate_output_buffer()
+{
+ output_buffer = calloc(1, (1 + topo.num_cpus) * 128);
+ outp = output_buffer;
+ if (outp == NULL) {
+ perror("calloc");
+ exit(-1);
+ }
+}
+
+void setup_all_buffers(void)
+{
+ topology_probe();
+ allocate_counters(&thread_even, &core_even, &package_even);
+ allocate_counters(&thread_odd, &core_odd, &package_odd);
+ allocate_output_buffer();
+ for_all_proc_cpus(initialize_counters);
+}
void turbostat_init()
{
check_cpuid();
@@ -1058,21 +1382,19 @@ void turbostat_init()
check_dev_msr();
check_super_user();
- num_cpus = for_all_cpus(alloc_new_counters);
- cpu_mask_init(num_cpus);
+ setup_all_buffers();
if (verbose)
- print_nehalem_info();
+ print_verbose_header();
}
int fork_it(char **argv)
{
- int retval;
pid_t child_pid;
- get_counters(cnt_even);
- /* clear affinity side-effect of get_counters() */
- sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
+ for_all_cpus(get_counters, EVEN_COUNTERS);
+ /* clear affinity side-effect of get_counters() */
+ sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
gettimeofday(&tv_even, (struct timezone *)NULL);
child_pid = fork();
@@ -1095,14 +1417,17 @@ int fork_it(char **argv)
exit(1);
}
}
- get_counters(cnt_odd);
+ /*
+ * n.b. fork_it() does not check for errors from for_all_cpus()
+ * because re-starting is problematic when forking
+ */
+ for_all_cpus(get_counters, ODD_COUNTERS);
gettimeofday(&tv_odd, (struct timezone *)NULL);
- retval = compute_delta(cnt_odd, cnt_even, cnt_delta);
-
timersub(&tv_odd, &tv_even, &tv_delta);
- compute_average(cnt_delta, cnt_average);
- if (!retval)
- print_counters(cnt_delta);
+ for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
+ compute_average(EVEN_COUNTERS);
+ format_all_counters(EVEN_COUNTERS);
+ flush_stderr();
fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);
@@ -1115,8 +1440,14 @@ void cmdline(int argc, char **argv)
progname = argv[0];
- while ((opt = getopt(argc, argv, "+svi:M:")) != -1) {
+ while ((opt = getopt(argc, argv, "+cpsvi:M:")) != -1) {
switch (opt) {
+ case 'c':
+ show_core_only++;
+ break;
+ case 'p':
+ show_pkg_only++;
+ break;
case 's':
summary_only++;
break;
@@ -1142,10 +1473,8 @@ int main(int argc, char **argv)
cmdline(argc, argv);
if (verbose > 1)
- fprintf(stderr, "turbostat Dec 6, 2010"
+ fprintf(stderr, "turbostat v2.0 May 16, 2012"
" - Len Brown <lenb@kernel.org>\n");
- if (verbose > 1)
- fprintf(stderr, "http://userweb.kernel.org/~lenb/acpi/utils/pmtools/turbostat/\n");
turbostat_init();
diff --git a/tools/testing/fault-injection/failcmd.sh b/tools/testing/fault-injection/failcmd.sh
new file mode 100644
index 000000000000..78a9ed7fecdb
--- /dev/null
+++ b/tools/testing/fault-injection/failcmd.sh
@@ -0,0 +1,219 @@
+#!/bin/bash
+#
+# NAME
+# failcmd.sh - run a command with injecting slab/page allocation failures
+#
+# SYNOPSIS
+# failcmd.sh --help
+# failcmd.sh [<options>] command [arguments]
+#
+# DESCRIPTION
+# Run command with injecting slab/page allocation failures by fault
+# injection.
+#
+# NOTE: you need to run this script as root.
+#
+
+usage()
+{
+ cat >&2 <<EOF
+Usage: $0 [options] command [arguments]
+
+OPTIONS
+ -p percent
+ --probability=percent
+ likelihood of failure injection, in percent.
+ Default value is 1
+
+ -t value
+ --times=value
+ specifies how many times failures may happen at most.
+ Default value is 1
+
+ --oom-kill-allocating-task=value
+ set /proc/sys/vm/oom_kill_allocating_task to specified value
+ before running the command.
+ Default value is 1
+
+ -h, --help
+ Display a usage message and exit
+
+ --interval=value, --space=value, --verbose=value, --task-filter=value,
+ --stacktrace-depth=value, --require-start=value, --require-end=value,
+ --reject-start=value, --reject-end=value, --ignore-gfp-wait=value
+ See Documentation/fault-injection/fault-injection.txt for more
+ information
+
+ failslab options:
+ --cache-filter=value
+
+ fail_page_alloc options:
+ --ignore-gfp-highmem=value, --min-order=value
+
+ENVIRONMENT
+ FAILCMD_TYPE
+ The following values for FAILCMD_TYPE are recognized:
+
+ failslab
+ inject slab allocation failures
+ fail_page_alloc
+ inject page allocation failures
+
+ If FAILCMD_TYPE is not defined, then failslab is used.
+EOF
+}
+
+if [ $UID != 0 ]; then
+ echo must be run as root >&2
+ exit 1
+fi
+
+DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3}'`
+
+if [ ! -d "$DEBUGFS" ]; then
+ echo debugfs is not mounted >&2
+ exit 1
+fi
+
+FAILCMD_TYPE=${FAILCMD_TYPE:-failslab}
+FAULTATTR=$DEBUGFS/$FAILCMD_TYPE
+
+if [ ! -d $FAULTATTR ]; then
+ echo $FAILCMD_TYPE is not available >&2
+ exit 1
+fi
+
+LONGOPTS=probability:,interval:,times:,space:,verbose:,task-filter:
+LONGOPTS=$LONGOPTS,stacktrace-depth:,require-start:,require-end:
+LONGOPTS=$LONGOPTS,reject-start:,reject-end:,oom-kill-allocating-task:,help
+
+if [ $FAILCMD_TYPE = failslab ]; then
+ LONGOPTS=$LONGOPTS,ignore-gfp-wait:,cache-filter:
+elif [ $FAILCMD_TYPE = fail_page_alloc ]; then
+ LONGOPTS=$LONGOPTS,ignore-gfp-wait:,ignore-gfp-highmem:,min-order:
+fi
+
+TEMP=`getopt -o p:i:t:s:v:h --long $LONGOPTS -n 'failcmd.sh' -- "$@"`
+
+if [ $? != 0 ]; then
+ usage
+ exit 1
+fi
+
+eval set -- "$TEMP"
+
+fault_attr_default()
+{
+ echo N > $FAULTATTR/task-filter
+ echo 0 > $FAULTATTR/probability
+ echo 1 > $FAULTATTR/times
+}
+
+fault_attr_default
+
+oom_kill_allocating_task_saved=`cat /proc/sys/vm/oom_kill_allocating_task`
+
+restore_values()
+{
+ fault_attr_default
+ echo $oom_kill_allocating_task_saved \
+ > /proc/sys/vm/oom_kill_allocating_task
+}
+
+#
+# Default options
+#
+declare -i oom_kill_allocating_task=1
+declare task_filter=Y
+declare -i probability=1
+declare -i times=1
+
+while true; do
+ case "$1" in
+ -p|--probability)
+ probability=$2
+ shift 2
+ ;;
+ -i|--interval)
+ echo $2 > $FAULTATTR/interval
+ shift 2
+ ;;
+ -t|--times)
+ times=$2
+ shift 2
+ ;;
+ -s|--space)
+ echo $2 > $FAULTATTR/space
+ shift 2
+ ;;
+ -v|--verbose)
+ echo $2 > $FAULTATTR/verbose
+ shift 2
+ ;;
+ --task-filter)
+ task_filter=$2
+ shift 2
+ ;;
+ --stacktrace-depth)
+ echo $2 > $FAULTATTR/stacktrace-depth
+ shift 2
+ ;;
+ --require-start)
+ echo $2 > $FAULTATTR/require-start
+ shift 2
+ ;;
+ --require-end)
+ echo $2 > $FAULTATTR/require-end
+ shift 2
+ ;;
+ --reject-start)
+ echo $2 > $FAULTATTR/reject-start
+ shift 2
+ ;;
+ --reject-end)
+ echo $2 > $FAULTATTR/reject-end
+ shift 2
+ ;;
+ --oom-kill-allocating-task)
+ oom_kill_allocating_task=$2
+ shift 2
+ ;;
+ --ignore-gfp-wait)
+ echo $2 > $FAULTATTR/ignore-gfp-wait
+ shift 2
+ ;;
+ --cache-filter)
+ echo $2 > $FAULTATTR/cache_filter
+ shift 2
+ ;;
+ --ignore-gfp-highmem)
+ echo $2 > $FAULTATTR/ignore-gfp-highmem
+ shift 2
+ ;;
+ --min-order)
+ echo $2 > $FAULTATTR/min-order
+ shift 2
+ ;;
+ -h|--help)
+ usage
+ exit 0
+ shift
+ ;;
+ --)
+ shift
+ break
+ ;;
+ esac
+done
+
+[ -z "$1" ] && exit 0
+
+echo $oom_kill_allocating_task > /proc/sys/vm/oom_kill_allocating_task
+echo $task_filter > $FAULTATTR/task-filter
+echo $probability > $FAULTATTR/probability
+echo $times > $FAULTATTR/times
+
+trap "restore_values" SIGINT SIGTERM EXIT
+
+cmd="echo 1 > /proc/self/make-it-fail && exec $@"
+bash -c "$cmd"
diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 292b13ad03f5..52b7959cd513 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -52,6 +52,7 @@ my %default = (
"STOP_AFTER_SUCCESS" => 10,
"STOP_AFTER_FAILURE" => 60,
"STOP_TEST_AFTER" => 600,
+ "MAX_MONITOR_WAIT" => 1800,
# required, and we will ask users if they don't have them but we keep the default
# value something that is common.
@@ -77,6 +78,11 @@ my $output_config;
my $test_type;
my $build_type;
my $build_options;
+my $final_post_ktest;
+my $pre_ktest;
+my $post_ktest;
+my $pre_test;
+my $post_test;
my $pre_build;
my $post_build;
my $pre_build_die;
@@ -93,6 +99,7 @@ my $reboot_on_success;
my $die_on_failure;
my $powercycle_after_reboot;
my $poweroff_after_halt;
+my $max_monitor_wait;
my $ssh_exec;
my $scp_to_target;
my $scp_to_target_install;
@@ -101,6 +108,7 @@ my $grub_menu;
my $grub_number;
my $target;
my $make;
+my $pre_install;
my $post_install;
my $no_install;
my $noclean;
@@ -167,6 +175,7 @@ my $bisect_check;
my $config_bisect;
my $config_bisect_type;
+my $config_bisect_check;
my $patchcheck_type;
my $patchcheck_start;
@@ -182,6 +191,9 @@ my $newconfig = 0;
my %entered_configs;
my %config_help;
my %variable;
+
+# force_config is the list of configs that we force enabled (or disabled)
+# in a .config file. The MIN_CONFIG and ADD_CONFIG configs.
my %force_config;
# do not force reboots on config problems
@@ -197,6 +209,10 @@ my %option_map = (
"OUTPUT_DIR" => \$outputdir,
"BUILD_DIR" => \$builddir,
"TEST_TYPE" => \$test_type,
+ "PRE_KTEST" => \$pre_ktest,
+ "POST_KTEST" => \$post_ktest,
+ "PRE_TEST" => \$pre_test,
+ "POST_TEST" => \$post_test,
"BUILD_TYPE" => \$build_type,
"BUILD_OPTIONS" => \$build_options,
"PRE_BUILD" => \$pre_build,
@@ -216,6 +232,7 @@ my %option_map = (
"ADD_CONFIG" => \$addconfig,
"REBOOT_TYPE" => \$reboot_type,
"GRUB_MENU" => \$grub_menu,
+ "PRE_INSTALL" => \$pre_install,
"POST_INSTALL" => \$post_install,
"NO_INSTALL" => \$no_install,
"REBOOT_SCRIPT" => \$reboot_script,
@@ -228,6 +245,7 @@ my %option_map = (
"POWER_OFF" => \$power_off,
"POWERCYCLE_AFTER_REBOOT" => \$powercycle_after_reboot,
"POWEROFF_AFTER_HALT" => \$poweroff_after_halt,
+ "MAX_MONITOR_WAIT" => \$max_monitor_wait,
"SLEEP_TIME" => \$sleep_time,
"BISECT_SLEEP_TIME" => \$bisect_sleep_time,
"PATCHCHECK_SLEEP_TIME" => \$patchcheck_sleep_time,
@@ -272,6 +290,7 @@ my %option_map = (
"CONFIG_BISECT" => \$config_bisect,
"CONFIG_BISECT_TYPE" => \$config_bisect_type,
+ "CONFIG_BISECT_CHECK" => \$config_bisect_check,
"PATCHCHECK_TYPE" => \$patchcheck_type,
"PATCHCHECK_START" => \$patchcheck_start,
@@ -604,6 +623,10 @@ sub process_compare {
return $lval eq $rval;
} elsif ($cmp eq "!=") {
return $lval ne $rval;
+ } elsif ($cmp eq "=~") {
+ return $lval =~ m/$rval/;
+ } elsif ($cmp eq "!~") {
+ return $lval !~ m/$rval/;
}
my $statement = "$lval $cmp $rval";
@@ -659,7 +682,7 @@ sub process_expression {
}
}
- if ($val =~ /(.*)(==|\!=|>=|<=|>|<)(.*)/) {
+ if ($val =~ /(.*)(==|\!=|>=|<=|>|<|=~|\!~)(.*)/) {
my $ret = process_compare($1, $2, $3);
if ($ret < 0) {
die "$name: $.: Unable to process comparison\n";
@@ -1117,7 +1140,11 @@ sub reboot {
}
if (defined($time)) {
- wait_for_monitor($time, $reboot_success_line);
+ if (wait_for_monitor($time, $reboot_success_line)) {
+ # reboot got stuck?
+ doprint "Reboot did not finish. Forcing power cycle\n";
+ run_command "$power_cycle";
+ }
end_monitor;
}
}
@@ -1212,6 +1239,11 @@ sub wait_for_monitor {
my $full_line = "";
my $line;
my $booted = 0;
+ my $start_time = time;
+ my $skip_call_trace = 0;
+ my $bug = 0;
+ my $bug_ignored = 0;
+ my $now;
doprint "** Wait for monitor to settle down **\n";
@@ -1227,11 +1259,39 @@ sub wait_for_monitor {
$booted = 1;
}
+ if ($full_line =~ /\[ backtrace testing \]/) {
+ $skip_call_trace = 1;
+ }
+
+ if ($full_line =~ /call trace:/i) {
+ if (!$bug && !$skip_call_trace) {
+ if ($ignore_errors) {
+ $bug_ignored = 1;
+ } else {
+ $bug = 1;
+ }
+ }
+ }
+
+ if ($full_line =~ /\[ end of backtrace testing \]/) {
+ $skip_call_trace = 0;
+ }
+
+ if ($full_line =~ /Kernel panic -/) {
+ $bug = 1;
+ }
+
if ($line =~ /\n/) {
$full_line = "";
}
+ $now = time;
+ if ($now - $start_time >= $max_monitor_wait) {
+ doprint "Exiting monitor flush due to hitting MAX_MONITOR_WAIT\n";
+ return 1;
+ }
}
print "** Monitor flushed **\n";
+ return $bug;
}
sub save_logs {
@@ -1273,6 +1333,10 @@ sub save_logs {
sub fail {
+ if (defined($post_test)) {
+ run_command $post_test;
+ }
+
if ($die_on_failure) {
dodie @_;
}
@@ -1656,6 +1720,12 @@ sub install {
return if ($no_install);
+ if (defined($pre_install)) {
+ my $cp_pre_install = eval_kernel_version $pre_install;
+ run_command "$cp_pre_install" or
+ dodie "Failed to run pre install";
+ }
+
my $cp_target = eval_kernel_version $target_image;
run_scp_install "$outputdir/$build_target", "$cp_target" or
@@ -1814,6 +1884,7 @@ sub make_oldconfig {
sub load_force_config {
my ($config) = @_;
+ doprint "Loading force configs from $config\n";
open(IN, $config) or
dodie "failed to read $config";
while (<IN>) {
@@ -1937,6 +2008,10 @@ sub halt {
sub success {
my ($i) = @_;
+ if (defined($post_test)) {
+ run_command $post_test;
+ }
+
$successes++;
my $name = "";
@@ -2003,6 +2078,7 @@ sub do_run_test {
my $line;
my $full_line;
my $bug = 0;
+ my $bug_ignored = 0;
wait_for_monitor 1;
@@ -2027,7 +2103,11 @@ sub do_run_test {
doprint $line;
if ($full_line =~ /call trace:/i) {
- $bug = 1;
+ if ($ignore_errors) {
+ $bug_ignored = 1;
+ } else {
+ $bug = 1;
+ }
}
if ($full_line =~ /Kernel panic -/) {
@@ -2040,6 +2120,10 @@ sub do_run_test {
}
} while (!$child_done && !$bug);
+ if (!$bug && $bug_ignored) {
+ doprint "WARNING: Call Trace detected but ignored due to IGNORE_ERRORS=1\n";
+ }
+
if ($bug) {
my $failure_start = time;
my $now;
@@ -2362,9 +2446,24 @@ sub bisect {
success $i;
}
+# config_ignore holds the configs that were set (or unset) for
+# a good config and we will ignore these configs for the rest
+# of a config bisect. These configs stay as they were.
my %config_ignore;
+
+# config_set holds what all configs were set as.
my %config_set;
+# config_off holds the set of configs that the bad config had disabled.
+# We need to record them and set them in the .config when running
+# oldnoconfig, because oldnoconfig does not turn off new symbols, but
+# instead just keeps the defaults.
+my %config_off;
+
+# config_off_tmp holds a set of configs to turn off for now
+my @config_off_tmp;
+
+# config_list is the set of configs that are being tested
my %config_list;
my %null_config;
@@ -2443,12 +2542,21 @@ sub create_config {
}
}
+ # turn off configs to keep off
+ foreach my $config (keys %config_off) {
+ print OUT "# $config is not set\n";
+ }
+
+ # turn off configs that should be off for now
+ foreach my $config (@config_off_tmp) {
+ print OUT "# $config is not set\n";
+ }
+
foreach my $config (keys %config_ignore) {
print OUT "$config_ignore{$config}\n";
}
close(OUT);
-# exit;
make_oldconfig;
}
@@ -2525,6 +2633,13 @@ sub run_config_bisect {
do {
my @tophalf = @start_list[0 .. $half];
+ # keep the bottom half off
+ if ($half < $#start_list) {
+ @config_off_tmp = @start_list[$half + 1 .. $#start_list];
+ } else {
+ @config_off_tmp = ();
+ }
+
create_config @tophalf;
read_current_config \%current_config;
@@ -2541,7 +2656,11 @@ sub run_config_bisect {
if (!$found) {
# try the other half
doprint "Top half produced no set configs, trying bottom half\n";
+
+ # keep the top half off
+ @config_off_tmp = @tophalf;
@tophalf = @start_list[$half + 1 .. $#start_list];
+
create_config @tophalf;
read_current_config \%current_config;
foreach my $config (@tophalf) {
@@ -2679,6 +2798,10 @@ sub config_bisect {
$added_configs{$2} = $1;
$config_list{$2} = $1;
}
+ } elsif (/^# ((CONFIG\S*).*)/) {
+ # Keep these configs disabled
+ $config_set{$2} = $1;
+ $config_off{$2} = $1;
}
}
close(IN);
@@ -2701,6 +2824,8 @@ sub config_bisect {
my %config_test;
my $once = 0;
+ @config_off_tmp = ();
+
# Sometimes kconfig does weird things. We must make sure
# that the config we autocreate has everything we need
# to test, otherwise we may miss testing configs, or
@@ -2719,6 +2844,18 @@ sub config_bisect {
}
}
my $ret;
+
+ if (defined($config_bisect_check) && $config_bisect_check) {
+ doprint " Checking to make sure bad config with min config fails\n";
+ create_config keys %config_list;
+ $ret = run_config_bisect_test $config_bisect_type;
+ if ($ret) {
+ doprint " FAILED! Bad config with min config boots fine\n";
+ return -1;
+ }
+ doprint " Bad config with min config fails as expected\n";
+ }
+
do {
$ret = run_config_bisect;
} while (!$ret);
@@ -3510,6 +3647,8 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
$iteration = $i;
+ undef %force_config;
+
my $makecmd = set_test_option("MAKE_CMD", $i);
# Load all the options into their mapped variable names
@@ -3519,6 +3658,18 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
$start_minconfig_defined = 1;
+ # The first test may override the PRE_KTEST option
+ if (defined($pre_ktest) && $i == 1) {
+ doprint "\n";
+ run_command $pre_ktest;
+ }
+
+ # Any test can override the POST_KTEST option
+ # The last test takes precedence.
+ if (defined($post_ktest)) {
+ $final_post_ktest = $post_ktest;
+ }
+
if (!defined($start_minconfig)) {
$start_minconfig_defined = 0;
$start_minconfig = $minconfig;
@@ -3573,6 +3724,10 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
doprint "\n\n";
doprint "RUNNING TEST $i of $opt{NUM_TESTS} with option $test_type $run_type$installme\n\n";
+ if (defined($pre_test)) {
+ run_command $pre_test;
+ }
+
unlink $dmesg;
unlink $buildlog;
unlink $testlog;
@@ -3638,6 +3793,10 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
success $i;
}
+if (defined($final_post_ktest)) {
+ run_command $final_post_ktest;
+}
+
if ($opt{"POWEROFF_ON_SUCCESS"}) {
halt;
} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot && $reboot_success) {
diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
index cf362b3d1ec9..de28a0a3b8fc 100644
--- a/tools/testing/ktest/sample.conf
+++ b/tools/testing/ktest/sample.conf
@@ -376,6 +376,24 @@
# DEFAULTS
# DEFAULTS SKIP
+# If you want to execute some command before the first test runs
+# you can set this option. Note, it can be set as a default option
+# or an option in the first test case. All other test cases will
+# ignore it. If both the default and first test have this option
+# set, then the first test will take precedence.
+#
+# default (undefined)
+#PRE_KTEST = ${SSH} ~/set_up_test
+
+# If you want to execute some command after all the tests have
+# completed, you can set this option. Note, it can be set as a
+# default or any test case can override it. If multiple test cases
+# set this option, then the last test case that set it will take
+# precedence
+#
+# default (undefined)
+#POST_KTEST = ${SSH} ~/dismantle_test
+
# The default test type (default test)
# The test types may be:
# build - only build the kernel, do nothing else
@@ -408,6 +426,14 @@
# (default "")
#BUILD_OPTIONS = -j20
+# If you need to do some special handling before installing
+# you can add a script with this option.
+# The environment variable KERNEL_VERSION will be set to the
+# kernel version that is used.
+#
+# default (undefined)
+#PRE_INSTALL = ssh user@target rm -rf '/lib/modules/*-test*'
+
# If you need an initrd, you can add a script or code here to install
# it. The environment variable KERNEL_VERSION will be set to the
# kernel version that is used. Remember to add the initrd line
@@ -426,6 +452,18 @@
# (default 0)
#NO_INSTALL = 1
+# If there is a command that you want to run before the individual test
+# case executes, then you can set this option
+#
+# default (undefined)
+#PRE_TEST = ${SSH} reboot_to_special_kernel
+
+# If there is a command you want to run after the individual test case
+# completes, then you can set this option.
+#
+# default (undefined)
+#POST_TEST = cd ${BUILD_DIR}; git reset --hard
+
# If there is a script that you require to run before the build is done
# you can specify it with PRE_BUILD.
#
@@ -657,6 +695,14 @@
# (default 60)
#BISECT_SLEEP_TIME = 60
+# The max wait time (in seconds) for waiting for the console to finish.
+# If for some reason, the console is outputting content without
+# ever finishing, this will cause ktest to get stuck. This
+# option is the max time ktest will wait for the monitor (console)
+# to settle down before continuing.
+# (default 1800)
+#MAX_MONITOR_WAIT
+
# The time in between patch checks to sleep (in seconds)
# (default 60)
#PATCHCHECK_SLEEP_TIME = 60
@@ -1039,6 +1085,12 @@
# can specify it with CONFIG_BISECT_GOOD. Otherwise
# the MIN_CONFIG is the base.
#
+# CONFIG_BISECT_CHECK (optional)
+# Set this to 1 if you want to confirm that the config ktest
+# generates (the bad config with the min config) is still bad.
+# It may be that the min config fixes what broke the bad config
+# and the test will not return a result.
+#
# Example:
# TEST_START
# TEST_TYPE = config_bisect
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index a4162e15c25f..85baf11e2acd 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -1,4 +1,4 @@
-TARGETS = breakpoints kcmp mqueue vm
+TARGETS = breakpoints kcmp mqueue vm cpu-hotplug memory-hotplug
all:
for TARGET in $(TARGETS); do \
diff --git a/tools/testing/selftests/cpu-hotplug/Makefile b/tools/testing/selftests/cpu-hotplug/Makefile
new file mode 100644
index 000000000000..7c9c20ff578a
--- /dev/null
+++ b/tools/testing/selftests/cpu-hotplug/Makefile
@@ -0,0 +1,6 @@
+all:
+
+run_tests:
+ ./on-off-test.sh
+
+clean:
diff --git a/tools/testing/selftests/cpu-hotplug/on-off-test.sh b/tools/testing/selftests/cpu-hotplug/on-off-test.sh
new file mode 100644
index 000000000000..bdde7cf428bb
--- /dev/null
+++ b/tools/testing/selftests/cpu-hotplug/on-off-test.sh
@@ -0,0 +1,221 @@
+#!/bin/bash
+
+SYSFS=
+
+prerequisite()
+{
+ msg="skip all tests:"
+
+ if [ $UID != 0 ]; then
+ echo $msg must be run as root >&2
+ exit 0
+ fi
+
+ SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
+
+ if [ ! -d "$SYSFS" ]; then
+ echo $msg sysfs is not mounted >&2
+ exit 0
+ fi
+
+ if ! ls $SYSFS/devices/system/cpu/cpu* > /dev/null 2>&1; then
+ echo $msg cpu hotplug is not supported >&2
+ exit 0
+ fi
+}
+
+#
+# list all hot-pluggable CPUs
+#
+hotpluggable_cpus()
+{
+ local state=${1:-.\*}
+
+ for cpu in $SYSFS/devices/system/cpu/cpu*; do
+ if [ -f $cpu/online ] && grep -q $state $cpu/online; then
+ echo ${cpu##/*/cpu}
+ fi
+ done
+}
+
+hotplaggable_offline_cpus()
+{
+ hotpluggable_cpus 0
+}
+
+hotpluggable_online_cpus()
+{
+ hotpluggable_cpus 1
+}
+
+cpu_is_online()
+{
+ grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
+}
+
+cpu_is_offline()
+{
+ grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
+}
+
+online_cpu()
+{
+ echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
+}
+
+offline_cpu()
+{
+ echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
+}
+
+online_cpu_expect_success()
+{
+ local cpu=$1
+
+ if ! online_cpu $cpu; then
+ echo $FUNCNAME $cpu: unexpected fail >&2
+ elif ! cpu_is_online $cpu; then
+ echo $FUNCNAME $cpu: unexpected offline >&2
+ fi
+}
+
+online_cpu_expect_fail()
+{
+ local cpu=$1
+
+ if online_cpu $cpu 2> /dev/null; then
+ echo $FUNCNAME $cpu: unexpected success >&2
+ elif ! cpu_is_offline $cpu; then
+ echo $FUNCNAME $cpu: unexpected online >&2
+ fi
+}
+
+offline_cpu_expect_success()
+{
+ local cpu=$1
+
+ if ! offline_cpu $cpu; then
+ echo $FUNCNAME $cpu: unexpected fail >&2
+ elif ! cpu_is_offline $cpu; then
+ echo $FUNCNAME $cpu: unexpected offline >&2
+ fi
+}
+
+offline_cpu_expect_fail()
+{
+ local cpu=$1
+
+ if offline_cpu $cpu 2> /dev/null; then
+ echo $FUNCNAME $cpu: unexpected success >&2
+ elif ! cpu_is_online $cpu; then
+ echo $FUNCNAME $cpu: unexpected offline >&2
+ fi
+}
+
+error=-12
+priority=0
+
+while getopts e:hp: opt; do
+ case $opt in
+ e)
+ error=$OPTARG
+ ;;
+ h)
+ echo "Usage $0 [ -e errno ] [ -p notifier-priority ]"
+ exit
+ ;;
+ p)
+ priority=$OPTARG
+ ;;
+ esac
+done
+
+if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
+ echo "error code must be -4095 <= errno < 0" >&2
+ exit 1
+fi
+
+prerequisite
+
+#
+# Online all hot-pluggable CPUs
+#
+for cpu in `hotplaggable_offline_cpus`; do
+ online_cpu_expect_success $cpu
+done
+
+#
+# Offline all hot-pluggable CPUs
+#
+for cpu in `hotpluggable_online_cpus`; do
+ offline_cpu_expect_success $cpu
+done
+
+#
+# Online all hot-pluggable CPUs again
+#
+for cpu in `hotplaggable_offline_cpus`; do
+ online_cpu_expect_success $cpu
+done
+
+#
+# Test with cpu notifier error injection
+#
+
+DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
+NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/cpu
+
+prerequisite_extra()
+{
+ msg="skip extra tests:"
+
+ /sbin/modprobe -q -r cpu-notifier-error-inject
+ /sbin/modprobe -q cpu-notifier-error-inject priority=$priority
+
+ if [ ! -d "$DEBUGFS" ]; then
+ echo $msg debugfs is not mounted >&2
+ exit 0
+ fi
+
+ if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
+ echo $msg cpu-notifier-error-inject module is not available >&2
+ exit 0
+ fi
+}
+
+prerequisite_extra
+
+#
+# Offline all hot-pluggable CPUs
+#
+echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
+for cpu in `hotpluggable_online_cpus`; do
+ offline_cpu_expect_success $cpu
+done
+
+#
+# Test CPU hot-add error handling (offline => online)
+#
+echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
+for cpu in `hotplaggable_offline_cpus`; do
+ online_cpu_expect_fail $cpu
+done
+
+#
+# Online all hot-pluggable CPUs
+#
+echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
+for cpu in `hotplaggable_offline_cpus`; do
+ online_cpu_expect_success $cpu
+done
+
+#
+# Test CPU hot-remove error handling (online => offline)
+#
+echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
+for cpu in `hotpluggable_online_cpus`; do
+ offline_cpu_expect_fail $cpu
+done
+
+echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
+/sbin/modprobe -q -r cpu-notifier-error-inject
diff --git a/tools/testing/selftests/memory-hotplug/Makefile b/tools/testing/selftests/memory-hotplug/Makefile
new file mode 100644
index 000000000000..7c9c20ff578a
--- /dev/null
+++ b/tools/testing/selftests/memory-hotplug/Makefile
@@ -0,0 +1,6 @@
+all:
+
+run_tests:
+ ./on-off-test.sh
+
+clean:
diff --git a/tools/testing/selftests/memory-hotplug/on-off-test.sh b/tools/testing/selftests/memory-hotplug/on-off-test.sh
new file mode 100644
index 000000000000..a2816f631542
--- /dev/null
+++ b/tools/testing/selftests/memory-hotplug/on-off-test.sh
@@ -0,0 +1,230 @@
+#!/bin/bash
+
+SYSFS=
+
+prerequisite()
+{
+ msg="skip all tests:"
+
+ if [ $UID != 0 ]; then
+ echo $msg must be run as root >&2
+ exit 0
+ fi
+
+ SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
+
+ if [ ! -d "$SYSFS" ]; then
+ echo $msg sysfs is not mounted >&2
+ exit 0
+ fi
+
+ if ! ls $SYSFS/devices/system/memory/memory* > /dev/null 2>&1; then
+ echo $msg memory hotplug is not supported >&2
+ exit 0
+ fi
+}
+
+#
+# list all hot-pluggable memory
+#
+hotpluggable_memory()
+{
+ local state=${1:-.\*}
+
+ for memory in $SYSFS/devices/system/memory/memory*; do
+ if grep -q 1 $memory/removable &&
+ grep -q $state $memory/state; then
+ echo ${memory##/*/memory}
+ fi
+ done
+}
+
+hotplaggable_offline_memory()
+{
+ hotpluggable_memory offline
+}
+
+hotpluggable_online_memory()
+{
+ hotpluggable_memory online
+}
+
+memory_is_online()
+{
+ grep -q online $SYSFS/devices/system/memory/memory$1/state
+}
+
+memory_is_offline()
+{
+ grep -q offline $SYSFS/devices/system/memory/memory$1/state
+}
+
+online_memory()
+{
+ echo online > $SYSFS/devices/system/memory/memory$1/state
+}
+
+offline_memory()
+{
+ echo offline > $SYSFS/devices/system/memory/memory$1/state
+}
+
+online_memory_expect_success()
+{
+ local memory=$1
+
+ if ! online_memory $memory; then
+ echo $FUNCNAME $memory: unexpected fail >&2
+ elif ! memory_is_online $memory; then
+ echo $FUNCNAME $memory: unexpected offline >&2
+ fi
+}
+
+online_memory_expect_fail()
+{
+ local memory=$1
+
+ if online_memory $memory 2> /dev/null; then
+ echo $FUNCNAME $memory: unexpected success >&2
+ elif ! memory_is_offline $memory; then
+ echo $FUNCNAME $memory: unexpected online >&2
+ fi
+}
+
+offline_memory_expect_success()
+{
+ local memory=$1
+
+ if ! offline_memory $memory; then
+ echo $FUNCNAME $memory: unexpected fail >&2
+ elif ! memory_is_offline $memory; then
+ echo $FUNCNAME $memory: unexpected offline >&2
+ fi
+}
+
+offline_memory_expect_fail()
+{
+ local memory=$1
+
+ if offline_memory $memory 2> /dev/null; then
+ echo $FUNCNAME $memory: unexpected success >&2
+ elif ! memory_is_online $memory; then
+ echo $FUNCNAME $memory: unexpected offline >&2
+ fi
+}
+
+error=-12
+priority=0
+ratio=10
+
+while getopts e:hp:r: opt; do
+ case $opt in
+ e)
+ error=$OPTARG
+ ;;
+ h)
+ echo "Usage $0 [ -e errno ] [ -p notifier-priority ] [ -r percent-of-memory-to-offline ]"
+ exit
+ ;;
+ p)
+ priority=$OPTARG
+ ;;
+ r)
+ ratio=$OPTARG
+ ;;
+ esac
+done
+
+if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
+ echo "error code must be -4095 <= errno < 0" >&2
+ exit 1
+fi
+
+prerequisite
+
+#
+# Online all hot-pluggable memory
+#
+for memory in `hotplaggable_offline_memory`; do
+ online_memory_expect_success $memory
+done
+
+#
+# Offline $ratio percent of hot-pluggable memory
+#
+for memory in `hotpluggable_online_memory`; do
+ if [ $((RANDOM % 100)) -lt $ratio ]; then
+ offline_memory_expect_success $memory
+ fi
+done
+
+#
+# Online all hot-pluggable memory again
+#
+for memory in `hotplaggable_offline_memory`; do
+ online_memory_expect_success $memory
+done
+
+#
+# Test with memory notifier error injection
+#
+
+DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
+NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/memory
+
+prerequisite_extra()
+{
+ msg="skip extra tests:"
+
+ /sbin/modprobe -q -r memory-notifier-error-inject
+ /sbin/modprobe -q memory-notifier-error-inject priority=$priority
+
+ if [ ! -d "$DEBUGFS" ]; then
+ echo $msg debugfs is not mounted >&2
+ exit 0
+ fi
+
+ if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
+ echo $msg memory-notifier-error-inject module is not available >&2
+ exit 0
+ fi
+}
+
+prerequisite_extra
+
+#
+# Offline $ratio percent of hot-pluggable memory
+#
+echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
+for memory in `hotpluggable_online_memory`; do
+ if [ $((RANDOM % 100)) -lt $ratio ]; then
+ offline_memory_expect_success $memory
+ fi
+done
+
+#
+# Test memory hot-add error handling (offline => online)
+#
+echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
+for memory in `hotplaggable_offline_memory`; do
+ online_memory_expect_fail $memory
+done
+
+#
+# Online all hot-pluggable memory
+#
+echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
+for memory in `hotplaggable_offline_memory`; do
+ online_memory_expect_success $memory
+done
+
+#
+# Test memory hot-remove error handling (online => offline)
+#
+echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
+for memory in `hotpluggable_online_memory`; do
+ offline_memory_expect_fail $memory
+done
+
+echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
+/sbin/modprobe -q -r memory-notifier-error-inject
diff --git a/tools/usb/testusb.c b/tools/usb/testusb.c
index 82d7c590c026..b0adb2710c02 100644
--- a/tools/usb/testusb.c
+++ b/tools/usb/testusb.c
@@ -425,7 +425,7 @@ int main (int argc, char **argv)
/* for easy use when hotplugging */
device = getenv ("DEVICE");
- while ((c = getopt (argc, argv, "D:aA:c:g:hns:t:v:")) != EOF)
+ while ((c = getopt (argc, argv, "D:aA:c:g:hlns:t:v:")) != EOF)
switch (c) {
case 'D': /* device, if only one */
device = optarg;
@@ -468,10 +468,21 @@ int main (int argc, char **argv)
case 'h':
default:
usage:
- fprintf (stderr, "usage: %s [-n] [-D dev | -a | -A usbfs-dir]\n"
- "\t[-c iterations] [-t testnum]\n"
- "\t[-s packetsize] [-g sglen] [-v vary]\n",
- argv [0]);
+ fprintf (stderr,
+ "usage: %s [options]\n"
+ "Options:\n"
+ "\t-D dev only test specific device\n"
+ "\t-A usbfs-dir\n"
+ "\t-a test all recognized devices\n"
+ "\t-l loop forever(for stress test)\n"
+ "\t-t testnum only run specified case\n"
+ "\t-n no test running, show devices to be tested\n"
+ "Case arguments:\n"
+ "\t-c iterations default 1000\n"
+ "\t-s packetsize default 512\n"
+ "\t-g sglen default 32\n"
+ "\t-v vary default 512\n",
+ argv[0]);
return 1;
}
if (optind != argc)
diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c
index 164cbcf61106..808d5a9d5dcf 100644
--- a/tools/vm/slabinfo.c
+++ b/tools/vm/slabinfo.c
@@ -437,34 +437,34 @@ static void slab_stats(struct slabinfo *s)
printf("Fastpath %8lu %8lu %3lu %3lu\n",
s->alloc_fastpath, s->free_fastpath,
s->alloc_fastpath * 100 / total_alloc,
- s->free_fastpath * 100 / total_free);
+ total_free ? s->free_fastpath * 100 / total_free : 0);
printf("Slowpath %8lu %8lu %3lu %3lu\n",
total_alloc - s->alloc_fastpath, s->free_slowpath,
(total_alloc - s->alloc_fastpath) * 100 / total_alloc,
- s->free_slowpath * 100 / total_free);
+ total_free ? s->free_slowpath * 100 / total_free : 0);
printf("Page Alloc %8lu %8lu %3lu %3lu\n",
s->alloc_slab, s->free_slab,
s->alloc_slab * 100 / total_alloc,
- s->free_slab * 100 / total_free);
+ total_free ? s->free_slab * 100 / total_free : 0);
printf("Add partial %8lu %8lu %3lu %3lu\n",
s->deactivate_to_head + s->deactivate_to_tail,
s->free_add_partial,
(s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc,
- s->free_add_partial * 100 / total_free);
+ total_free ? s->free_add_partial * 100 / total_free : 0);
printf("Remove partial %8lu %8lu %3lu %3lu\n",
s->alloc_from_partial, s->free_remove_partial,
s->alloc_from_partial * 100 / total_alloc,
- s->free_remove_partial * 100 / total_free);
+ total_free ? s->free_remove_partial * 100 / total_free : 0);
printf("Cpu partial list %8lu %8lu %3lu %3lu\n",
s->cpu_partial_alloc, s->cpu_partial_free,
s->cpu_partial_alloc * 100 / total_alloc,
- s->cpu_partial_free * 100 / total_free);
+ total_free ? s->cpu_partial_free * 100 / total_free : 0);
printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n",
s->deactivate_remote_frees, s->free_frozen,
s->deactivate_remote_frees * 100 / total_alloc,
- s->free_frozen * 100 / total_free);
+ total_free ? s->free_frozen * 100 / total_free : 0);
printf("Total %8lu %8lu\n\n", total_alloc, total_free);