diff options
Diffstat (limited to 'tools/perf/arch')
-rw-r--r-- | tools/perf/arch/arm64/util/Build | 1 | ||||
-rw-r--r-- | tools/perf/arch/arm64/util/tsc.c | 21 | ||||
-rw-r--r-- | tools/perf/arch/powerpc/util/header.c | 7 | ||||
-rw-r--r-- | tools/perf/arch/x86/annotate/instructions.c | 1 | ||||
-rw-r--r-- | tools/perf/arch/x86/util/Build | 2 | ||||
-rw-r--r-- | tools/perf/arch/x86/util/group.c | 28 | ||||
-rw-r--r-- | tools/perf/arch/x86/util/topdown.c | 63 | ||||
-rw-r--r-- | tools/perf/arch/x86/util/tsc.c | 73 |
8 files changed, 93 insertions, 103 deletions
diff --git a/tools/perf/arch/arm64/util/Build b/tools/perf/arch/arm64/util/Build index 5c13438c7bd4..b53294d74b01 100644 --- a/tools/perf/arch/arm64/util/Build +++ b/tools/perf/arch/arm64/util/Build @@ -1,6 +1,7 @@ perf-y += header.o perf-y += machine.o perf-y += perf_regs.o +perf-y += tsc.o perf-$(CONFIG_DWARF) += dwarf-regs.o perf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/arm64/util/tsc.c b/tools/perf/arch/arm64/util/tsc.c new file mode 100644 index 000000000000..cc85bd9e73f1 --- /dev/null +++ b/tools/perf/arch/arm64/util/tsc.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/types.h> + +#include "../../../util/tsc.h" + +u64 rdtsc(void) +{ + u64 val; + + /* + * According to ARM DDI 0487F.c, from Armv8.0 to Armv8.5 inclusive, the + * system counter is at least 56 bits wide; from Armv8.6, the counter + * must be 64 bits wide. So the system counter could be less than 64 + * bits wide and it is attributed with the flag 'cap_user_time_short' + * is true. + */ + asm volatile("mrs %0, cntvct_el0" : "=r" (val)); + + return val; +} diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c index 1a950171a66f..58b2d610aadb 100644 --- a/tools/perf/arch/powerpc/util/header.c +++ b/tools/perf/arch/powerpc/util/header.c @@ -40,8 +40,11 @@ get_cpuid_str(struct perf_pmu *pmu __maybe_unused) return bufp; } -int arch_get_runtimeparam(void) +int arch_get_runtimeparam(struct pmu_event *pe) { int count; - return sysfs__read_int("/devices/hv_24x7/interface/sockets", &count) < 0 ? 1 : count; + char path[PATH_MAX] = "/devices/hv_24x7/interface/"; + + atoi(pe->aggr_mode) == PerChip ? strcat(path, "sockets") : strcat(path, "coresperchip"); + return sysfs__read_int(path, &count) < 0 ? 1 : count; } diff --git a/tools/perf/arch/x86/annotate/instructions.c b/tools/perf/arch/x86/annotate/instructions.c index 7eb5621c021d..24ea12ec7e02 100644 --- a/tools/perf/arch/x86/annotate/instructions.c +++ b/tools/perf/arch/x86/annotate/instructions.c @@ -110,6 +110,7 @@ static struct ins x86__instructions[] = { { .name = "por", .ops = &mov_ops, }, { .name = "rclb", .ops = &mov_ops, }, { .name = "rcll", .ops = &mov_ops, }, + { .name = "ret", .ops = &ret_ops, }, { .name = "retq", .ops = &ret_ops, }, { .name = "sbb", .ops = &mov_ops, }, { .name = "sbbl", .ops = &mov_ops, }, diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build index 47f9c56e744f..347c39b960eb 100644 --- a/tools/perf/arch/x86/util/Build +++ b/tools/perf/arch/x86/util/Build @@ -3,7 +3,7 @@ perf-y += tsc.o perf-y += pmu.o perf-y += kvm-stat.o perf-y += perf_regs.o -perf-y += group.o +perf-y += topdown.o perf-y += machine.o perf-y += event.o diff --git a/tools/perf/arch/x86/util/group.c b/tools/perf/arch/x86/util/group.c deleted file mode 100644 index e2f8034b8973..000000000000 --- a/tools/perf/arch/x86/util/group.c +++ /dev/null @@ -1,28 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <stdio.h> -#include "api/fs/fs.h" -#include "util/group.h" - -/* - * Check whether we can use a group for top down. - * Without a group may get bad results due to multiplexing. - */ -bool arch_topdown_check_group(bool *warn) -{ - int n; - - if (sysctl__read_int("kernel/nmi_watchdog", &n) < 0) - return false; - if (n > 0) { - *warn = true; - return false; - } - return true; -} - -void arch_topdown_group_warn(void) -{ - fprintf(stderr, - "nmi_watchdog enabled with topdown. May give wrong results.\n" - "Disable with echo 0 > /proc/sys/kernel/nmi_watchdog\n"); -} diff --git a/tools/perf/arch/x86/util/topdown.c b/tools/perf/arch/x86/util/topdown.c new file mode 100644 index 000000000000..2f3d96aa92a5 --- /dev/null +++ b/tools/perf/arch/x86/util/topdown.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include "api/fs/fs.h" +#include "util/pmu.h" +#include "util/topdown.h" + +/* + * Check whether we can use a group for top down. + * Without a group may get bad results due to multiplexing. + */ +bool arch_topdown_check_group(bool *warn) +{ + int n; + + if (sysctl__read_int("kernel/nmi_watchdog", &n) < 0) + return false; + if (n > 0) { + *warn = true; + return false; + } + return true; +} + +void arch_topdown_group_warn(void) +{ + fprintf(stderr, + "nmi_watchdog enabled with topdown. May give wrong results.\n" + "Disable with echo 0 > /proc/sys/kernel/nmi_watchdog\n"); +} + +#define TOPDOWN_SLOTS 0x0400 + +static bool is_topdown_slots_event(struct evsel *counter) +{ + if (!counter->pmu_name) + return false; + + if (strcmp(counter->pmu_name, "cpu")) + return false; + + if (counter->core.attr.config == TOPDOWN_SLOTS) + return true; + + return false; +} + +/* + * Check whether a topdown group supports sample-read. + * + * Only Topdown metic supports sample-read. The slots + * event must be the leader of the topdown group. + */ + +bool arch_topdown_sample_read(struct evsel *leader) +{ + if (!pmu_have_event("cpu", "slots")) + return false; + + if (is_topdown_slots_event(leader)) + return true; + + return false; +} diff --git a/tools/perf/arch/x86/util/tsc.c b/tools/perf/arch/x86/util/tsc.c index 2f55afb14e1f..559365f8fe52 100644 --- a/tools/perf/arch/x86/util/tsc.c +++ b/tools/perf/arch/x86/util/tsc.c @@ -1,45 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 -#include <stdbool.h> -#include <errno.h> - -#include <linux/stddef.h> -#include <linux/perf_event.h> - #include <linux/types.h> -#include <asm/barrier.h> -#include "../../../util/debug.h" -#include "../../../util/event.h" -#include "../../../util/synthetic-events.h" -#include "../../../util/tsc.h" - -int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, - struct perf_tsc_conversion *tc) -{ - bool cap_user_time_zero; - u32 seq; - int i = 0; - - while (1) { - seq = pc->lock; - rmb(); - tc->time_mult = pc->time_mult; - tc->time_shift = pc->time_shift; - tc->time_zero = pc->time_zero; - cap_user_time_zero = pc->cap_user_time_zero; - rmb(); - if (pc->lock == seq && !(seq & 1)) - break; - if (++i > 10000) { - pr_debug("failed to get perf_event_mmap_page lock\n"); - return -EINVAL; - } - } - if (!cap_user_time_zero) - return -EOPNOTSUPP; - - return 0; -} +#include "../../../util/tsc.h" u64 rdtsc(void) { @@ -49,36 +11,3 @@ u64 rdtsc(void) return low | ((u64)high) << 32; } - -int perf_event__synth_time_conv(const struct perf_event_mmap_page *pc, - struct perf_tool *tool, - perf_event__handler_t process, - struct machine *machine) -{ - union perf_event event = { - .time_conv = { - .header = { - .type = PERF_RECORD_TIME_CONV, - .size = sizeof(struct perf_record_time_conv), - }, - }, - }; - struct perf_tsc_conversion tc; - int err; - - if (!pc) - return 0; - err = perf_read_tsc_conversion(pc, &tc); - if (err == -EOPNOTSUPP) - return 0; - if (err) - return err; - - pr_debug2("Synthesizing TSC conversion information\n"); - - event.time_conv.time_mult = tc.time_mult; - event.time_conv.time_shift = tc.time_shift; - event.time_conv.time_zero = tc.time_zero; - - return process(tool, &event, NULL, machine); -} |