diff options
Diffstat (limited to 'tools')
30 files changed, 899 insertions, 120 deletions
diff --git a/tools/include/tools/be_byteshift.h b/tools/include/tools/be_byteshift.h index f4912e2668ba..84c17d836578 100644 --- a/tools/include/tools/be_byteshift.h +++ b/tools/include/tools/be_byteshift.h @@ -1,68 +1,68 @@ #ifndef _TOOLS_BE_BYTESHIFT_H #define _TOOLS_BE_BYTESHIFT_H -#include <linux/types.h> +#include <stdint.h> -static inline __u16 __get_unaligned_be16(const __u8 *p) +static inline uint16_t __get_unaligned_be16(const uint8_t *p) { return p[0] << 8 | p[1]; } -static inline __u32 __get_unaligned_be32(const __u8 *p) +static inline uint32_t __get_unaligned_be32(const uint8_t *p) { return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3]; } -static inline __u64 __get_unaligned_be64(const __u8 *p) +static inline uint64_t __get_unaligned_be64(const uint8_t *p) { - return (__u64)__get_unaligned_be32(p) << 32 | + return (uint64_t)__get_unaligned_be32(p) << 32 | __get_unaligned_be32(p + 4); } -static inline void __put_unaligned_be16(__u16 val, __u8 *p) +static inline void __put_unaligned_be16(uint16_t val, uint8_t *p) { *p++ = val >> 8; *p++ = val; } -static inline void __put_unaligned_be32(__u32 val, __u8 *p) +static inline void __put_unaligned_be32(uint32_t val, uint8_t *p) { __put_unaligned_be16(val >> 16, p); __put_unaligned_be16(val, p + 2); } -static inline void __put_unaligned_be64(__u64 val, __u8 *p) +static inline void __put_unaligned_be64(uint64_t val, uint8_t *p) { __put_unaligned_be32(val >> 32, p); __put_unaligned_be32(val, p + 4); } -static inline __u16 get_unaligned_be16(const void *p) +static inline uint16_t get_unaligned_be16(const void *p) { - return __get_unaligned_be16((const __u8 *)p); + return __get_unaligned_be16((const uint8_t *)p); } -static inline __u32 get_unaligned_be32(const void *p) +static inline uint32_t get_unaligned_be32(const void *p) { - return __get_unaligned_be32((const __u8 *)p); + return __get_unaligned_be32((const uint8_t *)p); } -static inline __u64 get_unaligned_be64(const void *p) +static inline uint64_t get_unaligned_be64(const void *p) { - return __get_unaligned_be64((const __u8 *)p); + return __get_unaligned_be64((const uint8_t *)p); } -static inline void put_unaligned_be16(__u16 val, void *p) +static inline void put_unaligned_be16(uint16_t val, void *p) { __put_unaligned_be16(val, p); } -static inline void put_unaligned_be32(__u32 val, void *p) +static inline void put_unaligned_be32(uint32_t val, void *p) { __put_unaligned_be32(val, p); } -static inline void put_unaligned_be64(__u64 val, void *p) +static inline void put_unaligned_be64(uint64_t val, void *p) { __put_unaligned_be64(val, p); } diff --git a/tools/include/tools/le_byteshift.h b/tools/include/tools/le_byteshift.h index c99d45a68bda..8fe9f2488ec7 100644 --- a/tools/include/tools/le_byteshift.h +++ b/tools/include/tools/le_byteshift.h @@ -1,68 +1,68 @@ #ifndef _TOOLS_LE_BYTESHIFT_H #define _TOOLS_LE_BYTESHIFT_H -#include <linux/types.h> +#include <stdint.h> -static inline __u16 __get_unaligned_le16(const __u8 *p) +static inline uint16_t __get_unaligned_le16(const uint8_t *p) { return p[0] | p[1] << 8; } -static inline __u32 __get_unaligned_le32(const __u8 *p) +static inline uint32_t __get_unaligned_le32(const uint8_t *p) { return p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24; } -static inline __u64 __get_unaligned_le64(const __u8 *p) +static inline uint64_t __get_unaligned_le64(const uint8_t *p) { - return (__u64)__get_unaligned_le32(p + 4) << 32 | + return (uint64_t)__get_unaligned_le32(p + 4) << 32 | __get_unaligned_le32(p); } -static inline void __put_unaligned_le16(__u16 val, __u8 *p) +static inline void __put_unaligned_le16(uint16_t val, uint8_t *p) { *p++ = val; *p++ = val >> 8; } -static inline void __put_unaligned_le32(__u32 val, __u8 *p) +static inline void __put_unaligned_le32(uint32_t val, uint8_t *p) { __put_unaligned_le16(val >> 16, p + 2); __put_unaligned_le16(val, p); } -static inline void __put_unaligned_le64(__u64 val, __u8 *p) +static inline void __put_unaligned_le64(uint64_t val, uint8_t *p) { __put_unaligned_le32(val >> 32, p + 4); __put_unaligned_le32(val, p); } -static inline __u16 get_unaligned_le16(const void *p) +static inline uint16_t get_unaligned_le16(const void *p) { - return __get_unaligned_le16((const __u8 *)p); + return __get_unaligned_le16((const uint8_t *)p); } -static inline __u32 get_unaligned_le32(const void *p) +static inline uint32_t get_unaligned_le32(const void *p) { - return __get_unaligned_le32((const __u8 *)p); + return __get_unaligned_le32((const uint8_t *)p); } -static inline __u64 get_unaligned_le64(const void *p) +static inline uint64_t get_unaligned_le64(const void *p) { - return __get_unaligned_le64((const __u8 *)p); + return __get_unaligned_le64((const uint8_t *)p); } -static inline void put_unaligned_le16(__u16 val, void *p) +static inline void put_unaligned_le16(uint16_t val, void *p) { __put_unaligned_le16(val, p); } -static inline void put_unaligned_le32(__u32 val, void *p) +static inline void put_unaligned_le32(uint32_t val, void *p) { __put_unaligned_le32(val, p); } -static inline void put_unaligned_le64(__u64 val, void *p) +static inline void put_unaligned_le64(uint64_t val, void *p) { __put_unaligned_le64(val, p); } diff --git a/tools/lguest/Makefile b/tools/lguest/Makefile index 0ac34206f7a7..97bca4871ea3 100644 --- a/tools/lguest/Makefile +++ b/tools/lguest/Makefile @@ -1,5 +1,4 @@ # This creates the demonstration utility "lguest" which runs a Linux guest. -# Missing headers? Add "-I../../../include -I../../../arch/x86/include" CFLAGS:=-m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -U_FORTIFY_SOURCE all: lguest diff --git a/tools/lguest/lguest.c b/tools/lguest/lguest.c index 07a03452c227..68f67cf3d318 100644 --- a/tools/lguest/lguest.c +++ b/tools/lguest/lguest.c @@ -42,14 +42,6 @@ #include <pwd.h> #include <grp.h> -#include <linux/virtio_config.h> -#include <linux/virtio_net.h> -#include <linux/virtio_blk.h> -#include <linux/virtio_console.h> -#include <linux/virtio_rng.h> -#include <linux/virtio_ring.h> -#include <asm/bootparam.h> -#include "../../include/linux/lguest_launcher.h" /*L:110 * We can ignore the 43 include files we need for this program, but I do want * to draw attention to the use of kernel-style types. @@ -65,6 +57,15 @@ typedef uint16_t u16; typedef uint8_t u8; /*:*/ +#include <linux/virtio_config.h> +#include <linux/virtio_net.h> +#include <linux/virtio_blk.h> +#include <linux/virtio_console.h> +#include <linux/virtio_rng.h> +#include <linux/virtio_ring.h> +#include <asm/bootparam.h> +#include "../../include/linux/lguest_launcher.h" + #define BRIDGE_PFX "bridge:" #ifndef SIOCBRADDIF #define SIOCBRADDIF 0x89a2 /* add interface to bridge */ @@ -177,7 +178,8 @@ static struct termios orig_term; * in precise order. */ #define wmb() __asm__ __volatile__("" : : : "memory") -#define mb() __asm__ __volatile__("" : : : "memory") +#define rmb() __asm__ __volatile__("lock; addl $0,0(%%esp)" : : : "memory") +#define mb() __asm__ __volatile__("lock; addl $0,0(%%esp)" : : : "memory") /* Wrapper for the last available index. Makes it easier to change. */ #define lg_last_avail(vq) ((vq)->last_avail_idx) @@ -676,6 +678,12 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, errx(1, "Guest moved used index from %u to %u", last_avail, vq->vring.avail->idx); + /* + * Make sure we read the descriptor number *after* we read the ring + * update; don't let the cpu or compiler change the order. + */ + rmb(); + /* * Grab the next descriptor number they're advertising, and increment * the index we've seen. @@ -695,6 +703,12 @@ static unsigned wait_for_vq_desc(struct virtqueue *vq, i = head; /* + * We have to read the descriptor after we read the descriptor number, + * but there's a data dependency there so the CPU shouldn't reorder + * that: no rmb() required. + */ + + /* * If this is an indirect entry, then this buffer contains a descriptor * table which we handle as if it's any normal descriptor chain. */ diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile index d875a74a3bdf..cbfec92af327 100644 --- a/tools/power/cpupower/Makefile +++ b/tools/power/cpupower/Makefile @@ -128,10 +128,12 @@ UTIL_OBJS = utils/helpers/amd.o utils/helpers/topology.o utils/helpers/msr.o \ utils/helpers/sysfs.o utils/helpers/misc.o utils/helpers/cpuid.o \ utils/helpers/pci.o utils/helpers/bitmask.o \ utils/idle_monitor/nhm_idle.o utils/idle_monitor/snb_idle.o \ + utils/idle_monitor/hsw_ext_idle.o \ utils/idle_monitor/amd_fam14h_idle.o utils/idle_monitor/cpuidle_sysfs.o \ utils/idle_monitor/mperf_monitor.o utils/idle_monitor/cpupower-monitor.o \ utils/cpupower.o utils/cpufreq-info.o utils/cpufreq-set.o \ - utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o + utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o \ + utils/cpuidle-set.o UTIL_SRC := $(UTIL_OBJS:.o=.c) diff --git a/tools/power/cpupower/man/cpupower-monitor.1 b/tools/power/cpupower/man/cpupower-monitor.1 index e01c35d13b6e..914cbb9d9cd0 100644 --- a/tools/power/cpupower/man/cpupower-monitor.1 +++ b/tools/power/cpupower/man/cpupower-monitor.1 @@ -110,13 +110,21 @@ May work poorly on Linux-2.6.20 through 2.6.29, as the \fBacpi-cpufreq \fP kernel frequency driver periodically cleared aperf/mperf registers in those kernels. -.SS "Nehalem" "SandyBridge" +.SS "Nehalem" "SandyBridge" "HaswellExtended" Intel Core and Package sleep state counters. Threads (hyperthreaded cores) may not be able to enter deeper core states if its sibling is utilized. Deepest package sleep states may in reality show up as machine/platform wide sleep states and can only be entered if all cores are idle. Look up Intel manuals (some are provided in the References section) for further details. +The monitors are named after the CPU family where the sleep state capabilities +got introduced and may not match exactly the CPU name of the platform. +For example an IvyBridge processor has sleep state capabilities which got +introduced in Nehalem and SandyBridge processor families. +Thus on an IvyBridge processor one will get Nehalem and SandyBridge sleep +state monitors. +HaswellExtended extra package sleep state capabilities are available only in a +specific Haswell (family 0x45) and probably also other future processors. .SS "Fam_12h" "Fam_14h" AMD laptop and desktop processor (family 12h and 14h) sleep state counters. diff --git a/tools/power/cpupower/utils/builtin.h b/tools/power/cpupower/utils/builtin.h index c10496fbe3c6..2284c8ea4e2a 100644 --- a/tools/power/cpupower/utils/builtin.h +++ b/tools/power/cpupower/utils/builtin.h @@ -5,6 +5,7 @@ extern int cmd_set(int argc, const char **argv); extern int cmd_info(int argc, const char **argv); extern int cmd_freq_set(int argc, const char **argv); extern int cmd_freq_info(int argc, const char **argv); +extern int cmd_idle_set(int argc, const char **argv); extern int cmd_idle_info(int argc, const char **argv); extern int cmd_monitor(int argc, const char **argv); diff --git a/tools/power/cpupower/utils/cpuidle-info.c b/tools/power/cpupower/utils/cpuidle-info.c index 8145af5f93a6..75e66de7e7a7 100644 --- a/tools/power/cpupower/utils/cpuidle-info.c +++ b/tools/power/cpupower/utils/cpuidle-info.c @@ -22,7 +22,7 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose) { - int idlestates, idlestate; + unsigned int idlestates, idlestate; char *tmp; printf(_ ("Analyzing CPU %d:\n"), cpu); @@ -31,10 +31,8 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose) if (idlestates == 0) { printf(_("CPU %u: No idle states\n"), cpu); return; - } else if (idlestates <= 0) { - printf(_("CPU %u: Can't read idle state info\n"), cpu); - return; } + printf(_("Number of idle states: %d\n"), idlestates); printf(_("Available idle states:")); for (idlestate = 0; idlestate < idlestates; idlestate++) { @@ -50,10 +48,14 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose) return; for (idlestate = 0; idlestate < idlestates; idlestate++) { + int disabled = sysfs_is_idlestate_disabled(cpu, idlestate); + /* Disabled interface not supported on older kernels */ + if (disabled < 0) + disabled = 0; tmp = sysfs_get_idlestate_name(cpu, idlestate); if (!tmp) continue; - printf("%s:\n", tmp); + printf("%s%s:\n", tmp, (disabled) ? " (DISABLED) " : ""); free(tmp); tmp = sysfs_get_idlestate_desc(cpu, idlestate); @@ -98,21 +100,13 @@ static void cpuidle_general_output(void) static void proc_cpuidle_cpu_output(unsigned int cpu) { long max_allowed_cstate = 2000000000; - int cstates, cstate; + unsigned int cstate, cstates; cstates = sysfs_get_idlestate_count(cpu); if (cstates == 0) { - /* - * Go on and print same useless info as you'd see with - * cat /proc/acpi/processor/../power - * printf(_("CPU %u: No C-states available\n"), cpu); - * return; - */ - } else if (cstates <= 0) { - printf(_("CPU %u: Can't read C-state info\n"), cpu); + printf(_("CPU %u: No C-states info\n"), cpu); return; } - /* printf("Cstates: %d\n", cstates); */ printf(_("active state: C0\n")); printf(_("max_cstate: C%u\n"), cstates-1); diff --git a/tools/power/cpupower/utils/cpuidle-set.c b/tools/power/cpupower/utils/cpuidle-set.c new file mode 100644 index 000000000000..c78141c5dfac --- /dev/null +++ b/tools/power/cpupower/utils/cpuidle-set.c @@ -0,0 +1,118 @@ +#include <unistd.h> +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include <limits.h> +#include <string.h> +#include <ctype.h> + +#include <getopt.h> + +#include "cpufreq.h" +#include "helpers/helpers.h" +#include "helpers/sysfs.h" + +static struct option info_opts[] = { + { .name = "disable", .has_arg = required_argument, .flag = NULL, .val = 'd'}, + { .name = "enable", .has_arg = required_argument, .flag = NULL, .val = 'e'}, + { }, +}; + + +int cmd_idle_set(int argc, char **argv) +{ + extern char *optarg; + extern int optind, opterr, optopt; + int ret = 0, cont = 1, param = 0, idlestate = 0; + unsigned int cpu = 0; + + do { + ret = getopt_long(argc, argv, "d:e:", info_opts, NULL); + if (ret == -1) + break; + switch (ret) { + case '?': + param = '?'; + cont = 0; + break; + case 'd': + if (param) { + param = -1; + cont = 0; + break; + } + param = ret; + idlestate = atoi(optarg); + break; + case 'e': + if (param) { + param = -1; + cont = 0; + break; + } + param = ret; + idlestate = atoi(optarg); + break; + case -1: + cont = 0; + break; + } + } while (cont); + + switch (param) { + case -1: + printf(_("You can't specify more than one " + "output-specific argument\n")); + exit(EXIT_FAILURE); + case '?': + printf(_("invalid or unknown argument\n")); + exit(EXIT_FAILURE); + } + + /* Default is: set all CPUs */ + if (bitmask_isallclear(cpus_chosen)) + bitmask_setall(cpus_chosen); + + for (cpu = bitmask_first(cpus_chosen); + cpu <= bitmask_last(cpus_chosen); cpu++) { + + if (!bitmask_isbitset(cpus_chosen, cpu)) + continue; + + switch (param) { + + case 'd': + ret = sysfs_idlestate_disable(cpu, idlestate, 1); + if (ret == 0) + printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu); + else if (ret == -1) + printf(_("Idlestate %u not available on CPU %u\n"), + idlestate, cpu); + else if (ret == -2) + printf(_("Idlestate disabling not supported by kernel\n")); + else + printf(_("Idlestate %u not disabled on CPU %u\n"), + idlestate, cpu); + break; + case 'e': + ret = sysfs_idlestate_disable(cpu, idlestate, 0); + if (ret == 0) + printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); + else if (ret == -1) + printf(_("Idlestate %u not available on CPU %u\n"), + idlestate, cpu); + else if (ret == -2) + printf(_("Idlestate enabling not supported by kernel\n")); + else + printf(_("Idlestate %u not enabled on CPU %u\n"), + idlestate, cpu); + break; + default: + /* Not reachable with proper args checking */ + printf(_("Invalid or unknown argument\n")); + exit(EXIT_FAILURE); + break; + } + } + return EXIT_SUCCESS; +} diff --git a/tools/power/cpupower/utils/cpupower.c b/tools/power/cpupower/utils/cpupower.c index 52bee591c1c5..7efc570ffbaa 100644 --- a/tools/power/cpupower/utils/cpupower.c +++ b/tools/power/cpupower/utils/cpupower.c @@ -17,12 +17,6 @@ #include "helpers/helpers.h" #include "helpers/bitmask.h" -struct cmd_struct { - const char *cmd; - int (*main)(int, const char **); - int needs_root; -}; - #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) static int cmd_help(int argc, const char **argv); @@ -43,10 +37,17 @@ int be_verbose; static void print_help(void); +struct cmd_struct { + const char *cmd; + int (*main)(int, const char **); + int needs_root; +}; + static struct cmd_struct commands[] = { { "frequency-info", cmd_freq_info, 0 }, { "frequency-set", cmd_freq_set, 1 }, { "idle-info", cmd_idle_info, 0 }, + { "idle-set", cmd_idle_set, 1 }, { "set", cmd_set, 1 }, { "info", cmd_info, 0 }, { "monitor", cmd_monitor, 0 }, diff --git a/tools/power/cpupower/utils/helpers/sysfs.c b/tools/power/cpupower/utils/helpers/sysfs.c index 38ab91629463..5cdc600e8152 100644 --- a/tools/power/cpupower/utils/helpers/sysfs.c +++ b/tools/power/cpupower/utils/helpers/sysfs.c @@ -89,6 +89,33 @@ int sysfs_is_cpu_online(unsigned int cpu) /* CPUidle idlestate specific /sys/devices/system/cpu/cpuX/cpuidle/ access */ + +/* CPUidle idlestate specific /sys/devices/system/cpu/cpuX/cpuidle/ access */ + +/* + * helper function to check whether a file under "../cpuX/cpuidle/stateX/" dir + * exists. + * For example the functionality to disable c-states was introduced in later + * kernel versions, this function can be used to explicitly check for this + * feature. + * + * returns 1 if the file exists, 0 otherwise. + */ +unsigned int sysfs_idlestate_file_exists(unsigned int cpu, + unsigned int idlestate, + const char *fname) +{ + char path[SYSFS_PATH_MAX]; + struct stat statbuf; + + + snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/cpuidle/state%u/%s", + cpu, idlestate, fname); + if (stat(path, &statbuf) != 0) + return 0; + return 1; +} + /* * helper function to read file from /sys into given buffer * fname is a relative path under "cpuX/cpuidle/stateX/" dir @@ -121,6 +148,40 @@ unsigned int sysfs_idlestate_read_file(unsigned int cpu, unsigned int idlestate, return (unsigned int) numread; } +/* + * helper function to write a new value to a /sys file + * fname is a relative path under "../cpuX/cpuidle/cstateY/" dir + * + * Returns the number of bytes written or 0 on error + */ +static +unsigned int sysfs_idlestate_write_file(unsigned int cpu, + unsigned int idlestate, + const char *fname, + const char *value, size_t len) +{ + char path[SYSFS_PATH_MAX]; + int fd; + ssize_t numwrite; + + snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/cpuidle/state%u/%s", + cpu, idlestate, fname); + + fd = open(path, O_WRONLY); + if (fd == -1) + return 0; + + numwrite = write(fd, value, len); + if (numwrite < 1) { + close(fd); + return 0; + } + + close(fd); + + return (unsigned int) numwrite; +} + /* read access to files which contain one numeric value */ enum idlestate_value { @@ -128,6 +189,7 @@ enum idlestate_value { IDLESTATE_POWER, IDLESTATE_LATENCY, IDLESTATE_TIME, + IDLESTATE_DISABLE, MAX_IDLESTATE_VALUE_FILES }; @@ -136,6 +198,7 @@ static const char *idlestate_value_files[MAX_IDLESTATE_VALUE_FILES] = { [IDLESTATE_POWER] = "power", [IDLESTATE_LATENCY] = "latency", [IDLESTATE_TIME] = "time", + [IDLESTATE_DISABLE] = "disable", }; static unsigned long long sysfs_idlestate_get_one_value(unsigned int cpu, @@ -205,8 +268,59 @@ static char *sysfs_idlestate_get_one_string(unsigned int cpu, return result; } +/* + * Returns: + * 1 if disabled + * 0 if enabled + * -1 if idlestate is not available + * -2 if disabling is not supported by the kernel + */ +int sysfs_is_idlestate_disabled(unsigned int cpu, + unsigned int idlestate) +{ + if (sysfs_get_idlestate_count(cpu) < idlestate) + return -1; + + if (!sysfs_idlestate_file_exists(cpu, idlestate, + idlestate_value_files[IDLESTATE_DISABLE])) + return -2; + return sysfs_idlestate_get_one_value(cpu, idlestate, IDLESTATE_DISABLE); +} + +/* + * Pass 1 as last argument to disable or 0 to enable the state + * Returns: + * 0 on success + * negative values on error, for example: + * -1 if idlestate is not available + * -2 if disabling is not supported by the kernel + * -3 No write access to disable/enable C-states + */ +int sysfs_idlestate_disable(unsigned int cpu, + unsigned int idlestate, + unsigned int disable) +{ + char value[SYSFS_PATH_MAX]; + int bytes_written; + + if (sysfs_get_idlestate_count(cpu) < idlestate) + return -1; + + if (!sysfs_idlestate_file_exists(cpu, idlestate, + idlestate_value_files[IDLESTATE_DISABLE])) + return -2; + + snprintf(value, SYSFS_PATH_MAX, "%u", disable); + + bytes_written = sysfs_idlestate_write_file(cpu, idlestate, "disable", + value, sizeof(disable)); + if (bytes_written) + return 0; + return -3; +} + unsigned long sysfs_get_idlestate_latency(unsigned int cpu, - unsigned int idlestate) + unsigned int idlestate) { return sysfs_idlestate_get_one_value(cpu, idlestate, IDLESTATE_LATENCY); } @@ -238,7 +352,7 @@ char *sysfs_get_idlestate_desc(unsigned int cpu, unsigned int idlestate) * Negativ in error case * Zero if cpuidle does not export any C-states */ -int sysfs_get_idlestate_count(unsigned int cpu) +unsigned int sysfs_get_idlestate_count(unsigned int cpu) { char file[SYSFS_PATH_MAX]; struct stat statbuf; diff --git a/tools/power/cpupower/utils/helpers/sysfs.h b/tools/power/cpupower/utils/helpers/sysfs.h index 8cb797bbceb0..d28f11fedbda 100644 --- a/tools/power/cpupower/utils/helpers/sysfs.h +++ b/tools/power/cpupower/utils/helpers/sysfs.h @@ -7,8 +7,16 @@ extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen); +extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu, + unsigned int idlestate, + const char *fname); + extern int sysfs_is_cpu_online(unsigned int cpu); +extern int sysfs_is_idlestate_disabled(unsigned int cpu, + unsigned int idlestate); +extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate, + unsigned int disable); extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu, unsigned int idlestate); extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu, @@ -19,7 +27,7 @@ extern char *sysfs_get_idlestate_name(unsigned int cpu, unsigned int idlestate); extern char *sysfs_get_idlestate_desc(unsigned int cpu, unsigned int idlestate); -extern int sysfs_get_idlestate_count(unsigned int cpu); +extern unsigned int sysfs_get_idlestate_count(unsigned int cpu); extern char *sysfs_get_cpuidle_governor(void); extern char *sysfs_get_cpuidle_driver(void); diff --git a/tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c b/tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c new file mode 100644 index 000000000000..ebeaba6571a3 --- /dev/null +++ b/tools/power/cpupower/utils/idle_monitor/hsw_ext_idle.c @@ -0,0 +1,196 @@ +/* + * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc. + * + * Licensed under the terms of the GNU GPL License version 2. + * + * Based on SandyBridge monitor. Implements the new package C-states + * (PC8, PC9, PC10) coming with a specific Haswell (family 0x45) CPU. + */ + +#if defined(__i386__) || defined(__x86_64__) + +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> + +#include "helpers/helpers.h" +#include "idle_monitor/cpupower-monitor.h" + +#define MSR_PKG_C8_RESIDENCY 0x00000630 +#define MSR_PKG_C9_RESIDENCY 0x00000631 +#define MSR_PKG_C10_RESIDENCY 0x00000632 + +#define MSR_TSC 0x10 + +enum intel_hsw_ext_id { PC8 = 0, PC9, PC10, HSW_EXT_CSTATE_COUNT, + TSC = 0xFFFF }; + +static int hsw_ext_get_count_percent(unsigned int self_id, double *percent, + unsigned int cpu); + +static cstate_t hsw_ext_cstates[HSW_EXT_CSTATE_COUNT] = { + { + .name = "PC8", + .desc = N_("Processor Package C8"), + .id = PC8, + .range = RANGE_PACKAGE, + .get_count_percent = hsw_ext_get_count_percent, + }, + { + .name = "PC9", + .desc = N_("Processor Package C9"), + .desc = N_("Processor Package C2"), + .id = PC9, + .range = RANGE_PACKAGE, + .get_count_percent = hsw_ext_get_count_percent, + }, + { + .name = "PC10", + .desc = N_("Processor Package C10"), + .id = PC10, + .range = RANGE_PACKAGE, + .get_count_percent = hsw_ext_get_count_percent, + }, +}; + +static unsigned long long tsc_at_measure_start; +static unsigned long long tsc_at_measure_end; +static unsigned long long *previous_count[HSW_EXT_CSTATE_COUNT]; +static unsigned long long *current_count[HSW_EXT_CSTATE_COUNT]; +/* valid flag for all CPUs. If a MSR read failed it will be zero */ +static int *is_valid; + +static int hsw_ext_get_count(enum intel_hsw_ext_id id, unsigned long long *val, + unsigned int cpu) +{ + int msr; + + switch (id) { + case PC8: + msr = MSR_PKG_C8_RESIDENCY; + break; + case PC9: + msr = MSR_PKG_C9_RESIDENCY; + break; + case PC10: + msr = MSR_PKG_C10_RESIDENCY; + break; + case TSC: + msr = MSR_TSC; + break; + default: + return -1; + }; + if (read_msr(cpu, msr, val)) + return -1; + return 0; +} + +static int hsw_ext_get_count_percent(unsigned int id, double *percent, + unsigned int cpu) +{ + *percent = 0.0; + + if (!is_valid[cpu]) + return -1; + + *percent = (100.0 * + (current_count[id][cpu] - previous_count[id][cpu])) / + (tsc_at_measure_end - tsc_at_measure_start); + + dprint("%s: previous: %llu - current: %llu - (%u)\n", + hsw_ext_cstates[id].name, previous_count[id][cpu], + current_count[id][cpu], cpu); + + dprint("%s: tsc_diff: %llu - count_diff: %llu - percent: %2.f (%u)\n", + hsw_ext_cstates[id].name, + (unsigned long long) tsc_at_measure_end - tsc_at_measure_start, + current_count[id][cpu] - previous_count[id][cpu], + *percent, cpu); + + return 0; +} + +static int hsw_ext_start(void) +{ + int num, cpu; + unsigned long long val; + + for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) { + for (cpu = 0; cpu < cpu_count; cpu++) { + hsw_ext_get_count(num, &val, cpu); + previous_count[num][cpu] = val; + } + } + hsw_ext_get_count(TSC, &tsc_at_measure_start, 0); + return 0; +} + +static int hsw_ext_stop(void) +{ + unsigned long long val; + int num, cpu; + + hsw_ext_get_count(TSC, &tsc_at_measure_end, 0); + + for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) { + for (cpu = 0; cpu < cpu_count; cpu++) { + is_valid[cpu] = !hsw_ext_get_count(num, &val, cpu); + current_count[num][cpu] = val; + } + } + return 0; +} + +struct cpuidle_monitor intel_hsw_ext_monitor; + +static struct cpuidle_monitor *hsw_ext_register(void) +{ + int num; + + if (cpupower_cpu_info.vendor != X86_VENDOR_INTEL + || cpupower_cpu_info.family != 6) + return NULL; + + switch (cpupower_cpu_info.model) { + case 0x45: /* HSW */ + break; + default: + return NULL; + } + + is_valid = calloc(cpu_count, sizeof(int)); + for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) { + previous_count[num] = calloc(cpu_count, + sizeof(unsigned long long)); + current_count[num] = calloc(cpu_count, + sizeof(unsigned long long)); + } + intel_hsw_ext_monitor.name_len = strlen(intel_hsw_ext_monitor.name); + return &intel_hsw_ext_monitor; +} + +void hsw_ext_unregister(void) +{ + int num; + free(is_valid); + for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) { + free(previous_count[num]); + free(current_count[num]); + } +} + +struct cpuidle_monitor intel_hsw_ext_monitor = { + .name = "HaswellExtended", + .hw_states = hsw_ext_cstates, + .hw_states_num = HSW_EXT_CSTATE_COUNT, + .start = hsw_ext_start, + .stop = hsw_ext_stop, + .do_register = hsw_ext_register, + .unregister = hsw_ext_unregister, + .needs_root = 1, + .overflow_s = 922000000 /* 922337203 seconds TSC overflow + at 20GHz */ +}; +#endif /* defined(__i386__) || defined(__x86_64__) */ diff --git a/tools/power/cpupower/utils/idle_monitor/idle_monitors.def b/tools/power/cpupower/utils/idle_monitor/idle_monitors.def index e3f8d9b2b18f..0d6ba4dbb9c7 100644 --- a/tools/power/cpupower/utils/idle_monitor/idle_monitors.def +++ b/tools/power/cpupower/utils/idle_monitor/idle_monitors.def @@ -2,6 +2,7 @@ DEF(amd_fam14h) DEF(intel_nhm) DEF(intel_snb) +DEF(intel_hsw_ext) DEF(mperf) #endif DEF(cpuidle_sysfs) diff --git a/tools/power/cpupower/utils/idle_monitor/snb_idle.c b/tools/power/cpupower/utils/idle_monitor/snb_idle.c index a99b43b97d6d..efc8a69c9aba 100644 --- a/tools/power/cpupower/utils/idle_monitor/snb_idle.c +++ b/tools/power/cpupower/utils/idle_monitor/snb_idle.c @@ -155,6 +155,10 @@ static struct cpuidle_monitor *snb_register(void) case 0x2D: /* SNB Xeon */ case 0x3A: /* IVB */ case 0x3E: /* IVB Xeon */ + case 0x3C: /* HSW */ + case 0x3F: /* HSW */ + case 0x45: /* HSW */ + case 0x46: /* HSW */ break; default: return NULL; diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 0d7fd8b51544..999eab1bc64f 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -1796,7 +1796,7 @@ sub monitor { # We already booted into the kernel we are testing, # but now we booted into another kernel? # Consider this a triple fault. - doprint "Aleady booted in Linux kernel $version, but now\n"; + doprint "Already booted in Linux kernel $version, but now\n"; doprint "we booted into Linux kernel $1.\n"; doprint "Assuming that this is a triple fault.\n"; doprint "To disable this: set DETECT_TRIPLE_FAULT to 0\n"; diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 0a63658065f0..4cb14cae3791 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -6,6 +6,7 @@ TARGETS += memory-hotplug TARGETS += mqueue TARGETS += net TARGETS += ptrace +TARGETS += timers TARGETS += vm all: diff --git a/tools/testing/selftests/cpu-hotplug/Makefile b/tools/testing/selftests/cpu-hotplug/Makefile index 12657a5e4bf9..ae5faf9aade2 100644 --- a/tools/testing/selftests/cpu-hotplug/Makefile +++ b/tools/testing/selftests/cpu-hotplug/Makefile @@ -1,6 +1,6 @@ all: run_tests: - @./on-off-test.sh || echo "cpu-hotplug selftests: [FAIL]" + @/bin/sh ./on-off-test.sh || echo "cpu-hotplug selftests: [FAIL]" clean: diff --git a/tools/testing/selftests/kcmp/.gitignore b/tools/testing/selftests/kcmp/.gitignore new file mode 100644 index 000000000000..5a9b3732b2de --- /dev/null +++ b/tools/testing/selftests/kcmp/.gitignore @@ -0,0 +1,2 @@ +kcmp_test +kcmp-test-file diff --git a/tools/testing/selftests/kcmp/Makefile b/tools/testing/selftests/kcmp/Makefile index 56eb5523dbb8..d7d6bbeeff2f 100644 --- a/tools/testing/selftests/kcmp/Makefile +++ b/tools/testing/selftests/kcmp/Makefile @@ -25,5 +25,4 @@ run_tests: all @./kcmp_test || echo "kcmp_test: [FAIL]" clean: - rm -fr ./run_test - rm -fr ./test-file + $(RM) kcmp_test kcmp-test-file diff --git a/tools/testing/selftests/memory-hotplug/Makefile b/tools/testing/selftests/memory-hotplug/Makefile index 0f49c3f5f58d..350bfeda3aa8 100644 --- a/tools/testing/selftests/memory-hotplug/Makefile +++ b/tools/testing/selftests/memory-hotplug/Makefile @@ -1,6 +1,6 @@ all: run_tests: - @./on-off-test.sh || echo "memory-hotplug selftests: [FAIL]" + @/bin/sh ./on-off-test.sh || echo "memory-hotplug selftests: [FAIL]" clean: diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c index c41b58640a05..24adf709bd9d 100644 --- a/tools/testing/selftests/net/psock_tpacket.c +++ b/tools/testing/selftests/net/psock_tpacket.c @@ -1,6 +1,7 @@ /* * Copyright 2013 Red Hat, Inc. * Author: Daniel Borkmann <dborkman@redhat.com> + * Chetan Loke <loke.chetan@gmail.com> (TPACKET_V3 usage example) * * A basic test of packet socket's TPACKET_V1/TPACKET_V2/TPACKET_V3 behavior. * @@ -71,18 +72,8 @@ # define __align_tpacket(x) __attribute__((aligned(TPACKET_ALIGN(x)))) #endif -#define BLOCK_STATUS(x) ((x)->h1.block_status) -#define BLOCK_NUM_PKTS(x) ((x)->h1.num_pkts) -#define BLOCK_O2FP(x) ((x)->h1.offset_to_first_pkt) -#define BLOCK_LEN(x) ((x)->h1.blk_len) -#define BLOCK_SNUM(x) ((x)->h1.seq_num) -#define BLOCK_O2PRIV(x) ((x)->offset_to_priv) -#define BLOCK_PRIV(x) ((void *) ((uint8_t *) (x) + BLOCK_O2PRIV(x))) -#define BLOCK_HDR_LEN (ALIGN_8(sizeof(struct block_desc))) -#define ALIGN_8(x) (((x) + 8 - 1) & ~(8 - 1)) -#define BLOCK_PLUS_PRIV(sz_pri) (BLOCK_HDR_LEN + ALIGN_8((sz_pri))) - #define NUM_PACKETS 100 +#define ALIGN_8(x) (((x) + 8 - 1) & ~(8 - 1)) struct ring { struct iovec *rd; @@ -476,41 +467,30 @@ static uint64_t __v3_prev_block_seq_num = 0; void __v3_test_block_seq_num(struct block_desc *pbd) { - if (__v3_prev_block_seq_num + 1 != BLOCK_SNUM(pbd)) { + if (__v3_prev_block_seq_num + 1 != pbd->h1.seq_num) { fprintf(stderr, "\nprev_block_seq_num:%"PRIu64", expected " "seq:%"PRIu64" != actual seq:%"PRIu64"\n", __v3_prev_block_seq_num, __v3_prev_block_seq_num + 1, - (uint64_t) BLOCK_SNUM(pbd)); + (uint64_t) pbd->h1.seq_num); exit(1); } - __v3_prev_block_seq_num = BLOCK_SNUM(pbd); + __v3_prev_block_seq_num = pbd->h1.seq_num; } static void __v3_test_block_len(struct block_desc *pbd, uint32_t bytes, int block_num) { - if (BLOCK_NUM_PKTS(pbd)) { - if (bytes != BLOCK_LEN(pbd)) { - fprintf(stderr, "\nblock:%u with %upackets, expected " - "len:%u != actual len:%u\n", block_num, - BLOCK_NUM_PKTS(pbd), bytes, BLOCK_LEN(pbd)); - exit(1); - } - } else { - if (BLOCK_LEN(pbd) != BLOCK_PLUS_PRIV(13)) { - fprintf(stderr, "\nblock:%u, expected len:%lu != " - "actual len:%u\n", block_num, BLOCK_HDR_LEN, - BLOCK_LEN(pbd)); - exit(1); - } + if (pbd->h1.num_pkts && bytes != pbd->h1.blk_len) { + fprintf(stderr, "\nblock:%u with %upackets, expected " + "len:%u != actual len:%u\n", block_num, + pbd->h1.num_pkts, bytes, pbd->h1.blk_len); + exit(1); } } static void __v3_test_block_header(struct block_desc *pbd, const int block_num) { - uint32_t block_status = BLOCK_STATUS(pbd); - - if ((block_status & TP_STATUS_USER) == 0) { + if ((pbd->h1.block_status & TP_STATUS_USER) == 0) { fprintf(stderr, "\nblock %u: not in TP_STATUS_USER\n", block_num); exit(1); } @@ -520,14 +500,15 @@ static void __v3_test_block_header(struct block_desc *pbd, const int block_num) static void __v3_walk_block(struct block_desc *pbd, const int block_num) { - int num_pkts = BLOCK_NUM_PKTS(pbd), i; - unsigned long bytes = 0; - unsigned long bytes_with_padding = BLOCK_PLUS_PRIV(13); + int num_pkts = pbd->h1.num_pkts, i; + unsigned long bytes = 0, bytes_with_padding = ALIGN_8(sizeof(*pbd)); struct tpacket3_hdr *ppd; __v3_test_block_header(pbd, block_num); - ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd + BLOCK_O2FP(pbd)); + ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd + + pbd->h1.offset_to_first_pkt); + for (i = 0; i < num_pkts; ++i) { bytes += ppd->tp_snaplen; @@ -551,7 +532,7 @@ static void __v3_walk_block(struct block_desc *pbd, const int block_num) void __v3_flush_block(struct block_desc *pbd) { - BLOCK_STATUS(pbd) = TP_STATUS_KERNEL; + pbd->h1.block_status = TP_STATUS_KERNEL; __sync_synchronize(); } @@ -577,7 +558,7 @@ static void walk_v3_rx(int sock, struct ring *ring) while (total_packets < NUM_PACKETS * 2) { pbd = (struct block_desc *) ring->rd[block_num].iov_base; - while ((BLOCK_STATUS(pbd) & TP_STATUS_USER) == 0) + while ((pbd->h1.block_status & TP_STATUS_USER) == 0) poll(&pfd, 1, 1); __v3_walk_block(pbd, block_num); @@ -624,8 +605,8 @@ static void __v1_v2_fill(struct ring *ring, unsigned int blocks) static void __v3_fill(struct ring *ring, unsigned int blocks) { ring->req3.tp_retire_blk_tov = 64; - ring->req3.tp_sizeof_priv = 13; - ring->req3.tp_feature_req_word |= TP_FT_REQ_FILL_RXHASH; + ring->req3.tp_sizeof_priv = 0; + ring->req3.tp_feature_req_word = TP_FT_REQ_FILL_RXHASH; ring->req3.tp_block_size = getpagesize() << 2; ring->req3.tp_frame_size = TPACKET_ALIGNMENT << 7; diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile new file mode 100644 index 000000000000..eb2859f4ad21 --- /dev/null +++ b/tools/testing/selftests/timers/Makefile @@ -0,0 +1,8 @@ +all: + gcc posix_timers.c -o posix_timers -lrt + +run_tests: all + ./posix_timers + +clean: + rm -f ./posix_timers diff --git a/tools/testing/selftests/timers/posix_timers.c b/tools/testing/selftests/timers/posix_timers.c new file mode 100644 index 000000000000..4fa655d68a81 --- /dev/null +++ b/tools/testing/selftests/timers/posix_timers.c @@ -0,0 +1,221 @@ +/* + * Copyright (C) 2013 Red Hat, Inc., Frederic Weisbecker <fweisbec@redhat.com> + * + * Licensed under the terms of the GNU GPL License version 2 + * + * Selftests for a few posix timers interface. + * + * Kernel loop code stolen from Steven Rostedt <srostedt@redhat.com> + */ + +#include <sys/time.h> +#include <stdio.h> +#include <signal.h> +#include <unistd.h> +#include <time.h> +#include <pthread.h> + +#define DELAY 2 +#define USECS_PER_SEC 1000000 + +static volatile int done; + +/* Busy loop in userspace to elapse ITIMER_VIRTUAL */ +static void user_loop(void) +{ + while (!done); +} + +/* + * Try to spend as much time as possible in kernelspace + * to elapse ITIMER_PROF. + */ +static void kernel_loop(void) +{ + void *addr = sbrk(0); + + while (!done) { + brk(addr + 4096); + brk(addr); + } +} + +/* + * Sleep until ITIMER_REAL expiration. + */ +static void idle_loop(void) +{ + pause(); +} + +static void sig_handler(int nr) +{ + done = 1; +} + +/* + * Check the expected timer expiration matches the GTOD elapsed delta since + * we armed the timer. Keep a 0.5 sec error margin due to various jitter. + */ +static int check_diff(struct timeval start, struct timeval end) +{ + long long diff; + + diff = end.tv_usec - start.tv_usec; + diff += (end.tv_sec - start.tv_sec) * USECS_PER_SEC; + + if (abs(diff - DELAY * USECS_PER_SEC) > USECS_PER_SEC / 2) { + printf("Diff too high: %lld..", diff); + return -1; + } + + return 0; +} + +static int check_itimer(int which) +{ + int err; + struct timeval start, end; + struct itimerval val = { + .it_value.tv_sec = DELAY, + }; + + printf("Check itimer "); + + if (which == ITIMER_VIRTUAL) + printf("virtual... "); + else if (which == ITIMER_PROF) + printf("prof... "); + else if (which == ITIMER_REAL) + printf("real... "); + + fflush(stdout); + + done = 0; + + if (which == ITIMER_VIRTUAL) + signal(SIGVTALRM, sig_handler); + else if (which == ITIMER_PROF) + signal(SIGPROF, sig_handler); + else if (which == ITIMER_REAL) + signal(SIGALRM, sig_handler); + + err = gettimeofday(&start, NULL); + if (err < 0) { + perror("Can't call gettimeofday()\n"); + return -1; + } + + err = setitimer(which, &val, NULL); + if (err < 0) { + perror("Can't set timer\n"); + return -1; + } + + if (which == ITIMER_VIRTUAL) + user_loop(); + else if (which == ITIMER_PROF) + kernel_loop(); + else if (which == ITIMER_REAL) + idle_loop(); + + gettimeofday(&end, NULL); + if (err < 0) { + perror("Can't call gettimeofday()\n"); + return -1; + } + + if (!check_diff(start, end)) + printf("[OK]\n"); + else + printf("[FAIL]\n"); + + return 0; +} + +static int check_timer_create(int which) +{ + int err; + timer_t id; + struct timeval start, end; + struct itimerspec val = { + .it_value.tv_sec = DELAY, + }; + + printf("Check timer_create() "); + if (which == CLOCK_THREAD_CPUTIME_ID) { + printf("per thread... "); + } else if (which == CLOCK_PROCESS_CPUTIME_ID) { + printf("per process... "); + } + fflush(stdout); + + done = 0; + timer_create(which, NULL, &id); + if (err < 0) { + perror("Can't create timer\n"); + return -1; + } + signal(SIGALRM, sig_handler); + + err = gettimeofday(&start, NULL); + if (err < 0) { + perror("Can't call gettimeofday()\n"); + return -1; + } + + err = timer_settime(id, 0, &val, NULL); + if (err < 0) { + perror("Can't set timer\n"); + return -1; + } + + user_loop(); + + gettimeofday(&end, NULL); + if (err < 0) { + perror("Can't call gettimeofday()\n"); + return -1; + } + + if (!check_diff(start, end)) + printf("[OK]\n"); + else + printf("[FAIL]\n"); + + return 0; +} + +int main(int argc, char **argv) +{ + int err; + + printf("Testing posix timers. False negative may happen on CPU execution \n"); + printf("based timers if other threads run on the CPU...\n"); + + if (check_itimer(ITIMER_VIRTUAL) < 0) + return -1; + + if (check_itimer(ITIMER_PROF) < 0) + return -1; + + if (check_itimer(ITIMER_REAL) < 0) + return -1; + + if (check_timer_create(CLOCK_THREAD_CPUTIME_ID) < 0) + return -1; + + /* + * It's unfortunately hard to reliably test a timer expiration + * on parallel multithread cputime. We could arm it to expire + * on DELAY * nr_threads, with nr_threads busy looping, then wait + * the normal DELAY since the time is elapsing nr_threads faster. + * But for that we need to ensure we have real physical free CPUs + * to ensure true parallelism. So test only one thread until we + * find a better solution. + */ + if (check_timer_create(CLOCK_PROCESS_CPUTIME_ID) < 0) + return -1; + + return 0; +} diff --git a/tools/testing/selftests/vm/.gitignore b/tools/testing/selftests/vm/.gitignore new file mode 100644 index 000000000000..ff1bb16cec4f --- /dev/null +++ b/tools/testing/selftests/vm/.gitignore @@ -0,0 +1,4 @@ +hugepage-mmap +hugepage-shm +map_hugetlb +thuge-gen diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index 436d2e81868b..3f94e1afd6cf 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -2,13 +2,14 @@ CC = $(CROSS_COMPILE)gcc CFLAGS = -Wall +BINARIES = hugepage-mmap hugepage-shm map_hugetlb thuge-gen hugetlbfstest -all: hugepage-mmap hugepage-shm map_hugetlb thuge-gen +all: $(BINARIES) %: %.c $(CC) $(CFLAGS) -o $@ $^ run_tests: all - @/bin/sh ./run_vmtests || echo "vmtests: [FAIL]" + @/bin/sh ./run_vmtests || (echo "vmtests: [FAIL]"; exit 1) clean: - $(RM) hugepage-mmap hugepage-shm map_hugetlb + $(RM) $(BINARIES) diff --git a/tools/testing/selftests/vm/hugetlbfstest.c b/tools/testing/selftests/vm/hugetlbfstest.c new file mode 100644 index 000000000000..ea40ff8c2391 --- /dev/null +++ b/tools/testing/selftests/vm/hugetlbfstest.c @@ -0,0 +1,84 @@ +#define _GNU_SOURCE +#include <assert.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +typedef unsigned long long u64; + +static size_t length = 1 << 24; + +static u64 read_rss(void) +{ + char buf[4096], *s = buf; + int i, fd; + u64 rss; + + fd = open("/proc/self/statm", O_RDONLY); + assert(fd > 2); + memset(buf, 0, sizeof(buf)); + read(fd, buf, sizeof(buf) - 1); + for (i = 0; i < 1; i++) + s = strchr(s, ' ') + 1; + rss = strtoull(s, NULL, 10); + return rss << 12; /* assumes 4k pagesize */ +} + +static void do_mmap(int fd, int extra_flags, int unmap) +{ + int *p; + int flags = MAP_PRIVATE | MAP_POPULATE | extra_flags; + u64 before, after; + + before = read_rss(); + p = mmap(NULL, length, PROT_READ | PROT_WRITE, flags, fd, 0); + assert(p != MAP_FAILED || + !"mmap returned an unexpected error"); + after = read_rss(); + assert(llabs(after - before - length) < 0x40000 || + !"rss didn't grow as expected"); + if (!unmap) + return; + munmap(p, length); + after = read_rss(); + assert(llabs(after - before) < 0x40000 || + !"rss didn't shrink as expected"); +} + +static int open_file(const char *path) +{ + int fd, err; + + unlink(path); + fd = open(path, O_CREAT | O_RDWR | O_TRUNC | O_EXCL + | O_LARGEFILE | O_CLOEXEC, 0600); + assert(fd > 2); + unlink(path); + err = ftruncate(fd, length); + assert(!err); + return fd; +} + +int main(void) +{ + int hugefd, fd; + + fd = open_file("/dev/shm/hugetlbhog"); + hugefd = open_file("/hugepages/hugetlbhog"); + + system("echo 100 > /proc/sys/vm/nr_hugepages"); + do_mmap(-1, MAP_ANONYMOUS, 1); + do_mmap(fd, 0, 1); + do_mmap(-1, MAP_ANONYMOUS | MAP_HUGETLB, 1); + do_mmap(hugefd, 0, 1); + do_mmap(hugefd, MAP_HUGETLB, 1); + /* Leak the last one to test do_exit() */ + do_mmap(-1, MAP_ANONYMOUS | MAP_HUGETLB, 0); + printf("oll korrekt.\n"); + return 0; +} diff --git a/tools/testing/selftests/vm/run_vmtests b/tools/testing/selftests/vm/run_vmtests index 4c53cae6c273..c87b6812300d 100644 --- a/tools/testing/selftests/vm/run_vmtests +++ b/tools/testing/selftests/vm/run_vmtests @@ -4,6 +4,7 @@ #we need 256M, below is the size in kB needmem=262144 mnt=./huge +exitcode=0 #get pagesize and freepages from /proc/meminfo while read name size unit; do @@ -41,6 +42,7 @@ echo "--------------------" ./hugepage-mmap if [ $? -ne 0 ]; then echo "[FAIL]" + exitcode=1 else echo "[PASS]" fi @@ -55,6 +57,7 @@ echo "--------------------" ./hugepage-shm if [ $? -ne 0 ]; then echo "[FAIL]" + exitcode=1 else echo "[PASS]" fi @@ -67,6 +70,18 @@ echo "--------------------" ./map_hugetlb if [ $? -ne 0 ]; then echo "[FAIL]" + exitcode=1 +else + echo "[PASS]" +fi + +echo "--------------------" +echo "running hugetlbfstest" +echo "--------------------" +./hugetlbfstest +if [ $? -ne 0 ]; then + echo "[FAIL]" + exitcode=1 else echo "[PASS]" fi @@ -75,3 +90,4 @@ fi umount $mnt rm -rf $mnt echo $nr_hugepgs > /proc/sys/vm/nr_hugepages +exit $exitcode diff --git a/tools/virtio/linux/module.h b/tools/virtio/linux/module.h index 3039a7e972b6..28ce95a05997 100644 --- a/tools/virtio/linux/module.h +++ b/tools/virtio/linux/module.h @@ -1 +1,6 @@ #include <linux/export.h> + +#define MODULE_LICENSE(__MODULE_LICENSE_value) \ + static __attribute__((unused)) const char *__MODULE_LICENSE_name = \ + __MODULE_LICENSE_value + diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h index cd801838156f..844783040703 100644 --- a/tools/virtio/linux/virtio.h +++ b/tools/virtio/linux/virtio.h @@ -45,9 +45,6 @@ struct virtqueue { void *priv; }; -#define MODULE_LICENSE(__MODULE_LICENSE_value) \ - const char *__MODULE_LICENSE_name = __MODULE_LICENSE_value - /* Interfaces exported by virtio_ring. */ int virtqueue_add_sgs(struct virtqueue *vq, struct scatterlist *sgs[], |