mirror of https://gitee.com/openkylin/linux.git
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"This update has mostly fixes, but also other bits:
- perf tooling fixes
- PMU driver fixes
- Intel Broadwell PMU driver HW-enablement for LBR callstacks
- a late coming 'perf kmem' tool update that enables it to also
analyze page allocation data. Note, this comes with MM tracepoint
changes that we believe to not break anything: because it changes
the formerly opaque 'struct page *' field that uniquely identifies
pages to 'pfn' which identifies pages uniquely too, but isn't as
opaque and can be used for other purposes as well"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/pt: Fix and clean up error handling in pt_event_add()
perf/x86/intel: Add Broadwell support for the LBR callstack
perf/x86/intel/rapl: Fix energy counter measurements but supporing per domain energy units
perf/x86/intel: Fix Core2,Atom,NHM,WSM cycles:pp events
perf/x86: Fix hw_perf_event::flags collision
perf probe: Fix segfault when probe with lazy_line to file
perf probe: Find compilation directory path for lazy matching
perf probe: Set retprobe flag when probe in address-based alternative mode
perf kmem: Analyze page allocator events also
tracing, mm: Record pfn instead of pointer to struct page
This commit is contained in:
Linus Torvalds
commit
96b90f27bc
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|
@ -65,15 +65,15 @@ struct event_constraint {
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/*
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* struct hw_perf_event.flags flags
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*/
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#define PERF_X86_EVENT_PEBS_LDLAT 0x1 /* ld+ldlat data address sampling */
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#define PERF_X86_EVENT_PEBS_ST 0x2 /* st data address sampling */
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#define PERF_X86_EVENT_PEBS_ST_HSW 0x4 /* haswell style datala, store */
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#define PERF_X86_EVENT_COMMITTED 0x8 /* event passed commit_txn */
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#define PERF_X86_EVENT_PEBS_LD_HSW 0x10 /* haswell style datala, load */
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#define PERF_X86_EVENT_PEBS_NA_HSW 0x20 /* haswell style datala, unknown */
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#define PERF_X86_EVENT_EXCL 0x40 /* HT exclusivity on counter */
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#define PERF_X86_EVENT_DYNAMIC 0x80 /* dynamic alloc'd constraint */
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#define PERF_X86_EVENT_RDPMC_ALLOWED 0x40 /* grant rdpmc permission */
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#define PERF_X86_EVENT_PEBS_LDLAT 0x0001 /* ld+ldlat data address sampling */
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#define PERF_X86_EVENT_PEBS_ST 0x0002 /* st data address sampling */
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#define PERF_X86_EVENT_PEBS_ST_HSW 0x0004 /* haswell style datala, store */
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#define PERF_X86_EVENT_COMMITTED 0x0008 /* event passed commit_txn */
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#define PERF_X86_EVENT_PEBS_LD_HSW 0x0010 /* haswell style datala, load */
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#define PERF_X86_EVENT_PEBS_NA_HSW 0x0020 /* haswell style datala, unknown */
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#define PERF_X86_EVENT_EXCL 0x0040 /* HT exclusivity on counter */
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#define PERF_X86_EVENT_DYNAMIC 0x0080 /* dynamic alloc'd constraint */
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#define PERF_X86_EVENT_RDPMC_ALLOWED 0x0100 /* grant rdpmc permission */
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struct amd_nb {
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|
|
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@ -3275,7 +3275,7 @@ __init int intel_pmu_init(void)
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hw_cache_extra_regs[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = HSW_DEMAND_WRITE|
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BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
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intel_pmu_lbr_init_snb();
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intel_pmu_lbr_init_hsw();
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x86_pmu.event_constraints = intel_bdw_event_constraints;
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x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
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@ -558,6 +558,8 @@ struct event_constraint intel_core2_pebs_event_constraints[] = {
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INTEL_FLAGS_UEVENT_CONSTRAINT(0x00c5, 0x1), /* BR_INST_RETIRED.MISPRED */
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INTEL_FLAGS_UEVENT_CONSTRAINT(0x1fc7, 0x1), /* SIMD_INST_RETURED.ANY */
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INTEL_FLAGS_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED.* */
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/* INST_RETIRED.ANY_P, inv=1, cmask=16 (cycles:p). */
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INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x01),
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EVENT_CONSTRAINT_END
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};
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@ -565,6 +567,8 @@ struct event_constraint intel_atom_pebs_event_constraints[] = {
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INTEL_FLAGS_UEVENT_CONSTRAINT(0x00c0, 0x1), /* INST_RETIRED.ANY */
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INTEL_FLAGS_UEVENT_CONSTRAINT(0x00c5, 0x1), /* MISPREDICTED_BRANCH_RETIRED */
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INTEL_FLAGS_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED.* */
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/* INST_RETIRED.ANY_P, inv=1, cmask=16 (cycles:p). */
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INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x01),
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EVENT_CONSTRAINT_END
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};
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@ -588,6 +592,8 @@ struct event_constraint intel_nehalem_pebs_event_constraints[] = {
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INTEL_FLAGS_UEVENT_CONSTRAINT(0x20c8, 0xf), /* ITLB_MISS_RETIRED */
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INTEL_FLAGS_EVENT_CONSTRAINT(0xcb, 0xf), /* MEM_LOAD_RETIRED.* */
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INTEL_FLAGS_EVENT_CONSTRAINT(0xf7, 0xf), /* FP_ASSIST.* */
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/* INST_RETIRED.ANY_P, inv=1, cmask=16 (cycles:p). */
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INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x0f),
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EVENT_CONSTRAINT_END
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};
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@ -603,6 +609,8 @@ struct event_constraint intel_westmere_pebs_event_constraints[] = {
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INTEL_FLAGS_UEVENT_CONSTRAINT(0x20c8, 0xf), /* ITLB_MISS_RETIRED */
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INTEL_FLAGS_EVENT_CONSTRAINT(0xcb, 0xf), /* MEM_LOAD_RETIRED.* */
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INTEL_FLAGS_EVENT_CONSTRAINT(0xf7, 0xf), /* FP_ASSIST.* */
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/* INST_RETIRED.ANY_P, inv=1, cmask=16 (cycles:p). */
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INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x0f),
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EVENT_CONSTRAINT_END
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};
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|
|
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|
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@ -988,39 +988,36 @@ static int pt_event_add(struct perf_event *event, int mode)
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int ret = -EBUSY;
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if (pt->handle.event)
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goto out;
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goto fail;
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buf = perf_aux_output_begin(&pt->handle, event);
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if (!buf) {
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ret = -EINVAL;
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goto out;
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}
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ret = -EINVAL;
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if (!buf)
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goto fail_stop;
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pt_buffer_reset_offsets(buf, pt->handle.head);
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if (!buf->snapshot) {
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ret = pt_buffer_reset_markers(buf, &pt->handle);
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if (ret) {
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perf_aux_output_end(&pt->handle, 0, true);
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goto out;
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}
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if (ret)
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goto fail_end_stop;
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}
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if (mode & PERF_EF_START) {
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pt_event_start(event, 0);
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if (hwc->state == PERF_HES_STOPPED) {
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pt_event_del(event, 0);
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ret = -EBUSY;
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}
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ret = -EBUSY;
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if (hwc->state == PERF_HES_STOPPED)
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goto fail_end_stop;
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} else {
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hwc->state = PERF_HES_STOPPED;
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}
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ret = 0;
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out:
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if (ret)
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hwc->state = PERF_HES_STOPPED;
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return 0;
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fail_end_stop:
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perf_aux_output_end(&pt->handle, 0, true);
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fail_stop:
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hwc->state = PERF_HES_STOPPED;
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fail:
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return ret;
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}
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|
|
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@ -62,6 +62,14 @@
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#define RAPL_IDX_PP1_NRG_STAT 3 /* gpu */
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#define INTEL_RAPL_PP1 0x4 /* pseudo-encoding */
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#define NR_RAPL_DOMAINS 0x4
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static const char *rapl_domain_names[NR_RAPL_DOMAINS] __initconst = {
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"pp0-core",
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"package",
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"dram",
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"pp1-gpu",
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};
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/* Clients have PP0, PKG */
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#define RAPL_IDX_CLN (1<<RAPL_IDX_PP0_NRG_STAT|\
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1<<RAPL_IDX_PKG_NRG_STAT|\
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@ -112,7 +120,6 @@ static struct perf_pmu_events_attr event_attr_##v = { \
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struct rapl_pmu {
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spinlock_t lock;
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int hw_unit; /* 1/2^hw_unit Joule */
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int n_active; /* number of active events */
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struct list_head active_list;
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struct pmu *pmu; /* pointer to rapl_pmu_class */
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@ -120,6 +127,7 @@ struct rapl_pmu {
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struct hrtimer hrtimer;
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};
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static int rapl_hw_unit[NR_RAPL_DOMAINS] __read_mostly; /* 1/2^hw_unit Joule */
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static struct pmu rapl_pmu_class;
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static cpumask_t rapl_cpu_mask;
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static int rapl_cntr_mask;
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|
|
@ -127,6 +135,7 @@ static int rapl_cntr_mask;
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static DEFINE_PER_CPU(struct rapl_pmu *, rapl_pmu);
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static DEFINE_PER_CPU(struct rapl_pmu *, rapl_pmu_to_free);
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static struct x86_pmu_quirk *rapl_quirks;
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static inline u64 rapl_read_counter(struct perf_event *event)
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{
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u64 raw;
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@ -134,15 +143,28 @@ static inline u64 rapl_read_counter(struct perf_event *event)
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return raw;
|
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}
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static inline u64 rapl_scale(u64 v)
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#define rapl_add_quirk(func_) \
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do { \
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static struct x86_pmu_quirk __quirk __initdata = { \
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.func = func_, \
|
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}; \
|
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__quirk.next = rapl_quirks; \
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rapl_quirks = &__quirk; \
|
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} while (0)
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static inline u64 rapl_scale(u64 v, int cfg)
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{
|
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if (cfg > NR_RAPL_DOMAINS) {
|
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pr_warn("invalid domain %d, failed to scale data\n", cfg);
|
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return v;
|
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}
|
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/*
|
||||
* scale delta to smallest unit (1/2^32)
|
||||
* users must then scale back: count * 1/(1e9*2^32) to get Joules
|
||||
* or use ldexp(count, -32).
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* Watts = Joules/Time delta
|
||||
*/
|
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return v << (32 - __this_cpu_read(rapl_pmu)->hw_unit);
|
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return v << (32 - rapl_hw_unit[cfg - 1]);
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}
|
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|
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static u64 rapl_event_update(struct perf_event *event)
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|
|
@ -173,7 +195,7 @@ static u64 rapl_event_update(struct perf_event *event)
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delta = (new_raw_count << shift) - (prev_raw_count << shift);
|
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delta >>= shift;
|
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|
||||
sdelta = rapl_scale(delta);
|
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sdelta = rapl_scale(delta, event->hw.config);
|
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|
||||
local64_add(sdelta, &event->count);
|
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|
||||
|
|
@ -546,12 +568,22 @@ static void rapl_cpu_init(int cpu)
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cpumask_set_cpu(cpu, &rapl_cpu_mask);
|
||||
}
|
||||
|
||||
static __init void rapl_hsw_server_quirk(void)
|
||||
{
|
||||
/*
|
||||
* DRAM domain on HSW server has fixed energy unit which can be
|
||||
* different than the unit from power unit MSR.
|
||||
* "Intel Xeon Processor E5-1600 and E5-2600 v3 Product Families, V2
|
||||
* of 2. Datasheet, September 2014, Reference Number: 330784-001 "
|
||||
*/
|
||||
rapl_hw_unit[RAPL_IDX_RAM_NRG_STAT] = 16;
|
||||
}
|
||||
|
||||
static int rapl_cpu_prepare(int cpu)
|
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{
|
||||
struct rapl_pmu *pmu = per_cpu(rapl_pmu, cpu);
|
||||
int phys_id = topology_physical_package_id(cpu);
|
||||
u64 ms;
|
||||
u64 msr_rapl_power_unit_bits;
|
||||
|
||||
if (pmu)
|
||||
return 0;
|
||||
|
|
@ -559,24 +591,13 @@ static int rapl_cpu_prepare(int cpu)
|
|||
if (phys_id < 0)
|
||||
return -1;
|
||||
|
||||
/* protect rdmsrl() to handle virtualization */
|
||||
if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits))
|
||||
return -1;
|
||||
|
||||
pmu = kzalloc_node(sizeof(*pmu), GFP_KERNEL, cpu_to_node(cpu));
|
||||
if (!pmu)
|
||||
return -1;
|
||||
|
||||
spin_lock_init(&pmu->lock);
|
||||
|
||||
INIT_LIST_HEAD(&pmu->active_list);
|
||||
|
||||
/*
|
||||
* grab power unit as: 1/2^unit Joules
|
||||
*
|
||||
* we cache in local PMU instance
|
||||
*/
|
||||
pmu->hw_unit = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
|
||||
pmu->pmu = &rapl_pmu_class;
|
||||
|
||||
/*
|
||||
|
|
@ -586,8 +607,8 @@ static int rapl_cpu_prepare(int cpu)
|
|||
* divide interval by 2 to avoid lockstep (2 * 100)
|
||||
* if hw unit is 32, then we use 2 ms 1/200/2
|
||||
*/
|
||||
if (pmu->hw_unit < 32)
|
||||
ms = (1000 / (2 * 100)) * (1ULL << (32 - pmu->hw_unit - 1));
|
||||
if (rapl_hw_unit[0] < 32)
|
||||
ms = (1000 / (2 * 100)) * (1ULL << (32 - rapl_hw_unit[0] - 1));
|
||||
else
|
||||
ms = 2;
|
||||
|
||||
|
|
@ -655,6 +676,20 @@ static int rapl_cpu_notifier(struct notifier_block *self,
|
|||
return NOTIFY_OK;
|
||||
}
|
||||
|
||||
static int rapl_check_hw_unit(void)
|
||||
{
|
||||
u64 msr_rapl_power_unit_bits;
|
||||
int i;
|
||||
|
||||
/* protect rdmsrl() to handle virtualization */
|
||||
if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits))
|
||||
return -1;
|
||||
for (i = 0; i < NR_RAPL_DOMAINS; i++)
|
||||
rapl_hw_unit[i] = (msr_rapl_power_unit_bits >> 8) & 0x1FULL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct x86_cpu_id rapl_cpu_match[] = {
|
||||
[0] = { .vendor = X86_VENDOR_INTEL, .family = 6 },
|
||||
[1] = {},
|
||||
|
|
@ -664,6 +699,8 @@ static int __init rapl_pmu_init(void)
|
|||
{
|
||||
struct rapl_pmu *pmu;
|
||||
int cpu, ret;
|
||||
struct x86_pmu_quirk *quirk;
|
||||
int i;
|
||||
|
||||
/*
|
||||
* check for Intel processor family 6
|
||||
|
|
@ -678,6 +715,11 @@ static int __init rapl_pmu_init(void)
|
|||
rapl_cntr_mask = RAPL_IDX_CLN;
|
||||
rapl_pmu_events_group.attrs = rapl_events_cln_attr;
|
||||
break;
|
||||
case 63: /* Haswell-Server */
|
||||
rapl_add_quirk(rapl_hsw_server_quirk);
|
||||
rapl_cntr_mask = RAPL_IDX_SRV;
|
||||
rapl_pmu_events_group.attrs = rapl_events_srv_attr;
|
||||
break;
|
||||
case 60: /* Haswell */
|
||||
case 69: /* Haswell-Celeron */
|
||||
rapl_cntr_mask = RAPL_IDX_HSW;
|
||||
|
|
@ -693,7 +735,13 @@ static int __init rapl_pmu_init(void)
|
|||
/* unsupported */
|
||||
return 0;
|
||||
}
|
||||
ret = rapl_check_hw_unit();
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* run cpu model quirks */
|
||||
for (quirk = rapl_quirks; quirk; quirk = quirk->next)
|
||||
quirk->func();
|
||||
cpu_notifier_register_begin();
|
||||
|
||||
for_each_online_cpu(cpu) {
|
||||
|
|
@ -714,14 +762,18 @@ static int __init rapl_pmu_init(void)
|
|||
|
||||
pmu = __this_cpu_read(rapl_pmu);
|
||||
|
||||
pr_info("RAPL PMU detected, hw unit 2^-%d Joules,"
|
||||
pr_info("RAPL PMU detected,"
|
||||
" API unit is 2^-32 Joules,"
|
||||
" %d fixed counters"
|
||||
" %llu ms ovfl timer\n",
|
||||
pmu->hw_unit,
|
||||
hweight32(rapl_cntr_mask),
|
||||
ktime_to_ms(pmu->timer_interval));
|
||||
|
||||
for (i = 0; i < NR_RAPL_DOMAINS; i++) {
|
||||
if (rapl_cntr_mask & (1 << i)) {
|
||||
pr_info("hw unit of domain %s 2^-%d Joules\n",
|
||||
rapl_domain_names[i], rapl_hw_unit[i]);
|
||||
}
|
||||
}
|
||||
out:
|
||||
cpu_notifier_register_done();
|
||||
|
||||
|
|
|
|||
|
|
@ -18,14 +18,14 @@ DECLARE_EVENT_CLASS(mm_filemap_op_page_cache,
|
|||
TP_ARGS(page),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(struct page *, page)
|
||||
__field(unsigned long, pfn)
|
||||
__field(unsigned long, i_ino)
|
||||
__field(unsigned long, index)
|
||||
__field(dev_t, s_dev)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->page = page;
|
||||
__entry->pfn = page_to_pfn(page);
|
||||
__entry->i_ino = page->mapping->host->i_ino;
|
||||
__entry->index = page->index;
|
||||
if (page->mapping->host->i_sb)
|
||||
|
|
@ -37,8 +37,8 @@ DECLARE_EVENT_CLASS(mm_filemap_op_page_cache,
|
|||
TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu",
|
||||
MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
|
||||
__entry->i_ino,
|
||||
__entry->page,
|
||||
page_to_pfn(__entry->page),
|
||||
pfn_to_page(__entry->pfn),
|
||||
__entry->pfn,
|
||||
__entry->index << PAGE_SHIFT)
|
||||
);
|
||||
|
||||
|
|
|
|||
|
|
@ -154,18 +154,18 @@ TRACE_EVENT(mm_page_free,
|
|||
TP_ARGS(page, order),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field( struct page *, page )
|
||||
__field( unsigned long, pfn )
|
||||
__field( unsigned int, order )
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->page = page;
|
||||
__entry->pfn = page_to_pfn(page);
|
||||
__entry->order = order;
|
||||
),
|
||||
|
||||
TP_printk("page=%p pfn=%lu order=%d",
|
||||
__entry->page,
|
||||
page_to_pfn(__entry->page),
|
||||
pfn_to_page(__entry->pfn),
|
||||
__entry->pfn,
|
||||
__entry->order)
|
||||
);
|
||||
|
||||
|
|
@ -176,18 +176,18 @@ TRACE_EVENT(mm_page_free_batched,
|
|||
TP_ARGS(page, cold),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field( struct page *, page )
|
||||
__field( unsigned long, pfn )
|
||||
__field( int, cold )
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->page = page;
|
||||
__entry->pfn = page_to_pfn(page);
|
||||
__entry->cold = cold;
|
||||
),
|
||||
|
||||
TP_printk("page=%p pfn=%lu order=0 cold=%d",
|
||||
__entry->page,
|
||||
page_to_pfn(__entry->page),
|
||||
pfn_to_page(__entry->pfn),
|
||||
__entry->pfn,
|
||||
__entry->cold)
|
||||
);
|
||||
|
||||
|
|
@ -199,22 +199,22 @@ TRACE_EVENT(mm_page_alloc,
|
|||
TP_ARGS(page, order, gfp_flags, migratetype),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field( struct page *, page )
|
||||
__field( unsigned long, pfn )
|
||||
__field( unsigned int, order )
|
||||
__field( gfp_t, gfp_flags )
|
||||
__field( int, migratetype )
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->page = page;
|
||||
__entry->pfn = page ? page_to_pfn(page) : -1UL;
|
||||
__entry->order = order;
|
||||
__entry->gfp_flags = gfp_flags;
|
||||
__entry->migratetype = migratetype;
|
||||
),
|
||||
|
||||
TP_printk("page=%p pfn=%lu order=%d migratetype=%d gfp_flags=%s",
|
||||
__entry->page,
|
||||
__entry->page ? page_to_pfn(__entry->page) : 0,
|
||||
__entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
|
||||
__entry->pfn != -1UL ? __entry->pfn : 0,
|
||||
__entry->order,
|
||||
__entry->migratetype,
|
||||
show_gfp_flags(__entry->gfp_flags))
|
||||
|
|
@ -227,20 +227,20 @@ DECLARE_EVENT_CLASS(mm_page,
|
|||
TP_ARGS(page, order, migratetype),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field( struct page *, page )
|
||||
__field( unsigned long, pfn )
|
||||
__field( unsigned int, order )
|
||||
__field( int, migratetype )
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->page = page;
|
||||
__entry->pfn = page ? page_to_pfn(page) : -1UL;
|
||||
__entry->order = order;
|
||||
__entry->migratetype = migratetype;
|
||||
),
|
||||
|
||||
TP_printk("page=%p pfn=%lu order=%u migratetype=%d percpu_refill=%d",
|
||||
__entry->page,
|
||||
__entry->page ? page_to_pfn(__entry->page) : 0,
|
||||
__entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
|
||||
__entry->pfn != -1UL ? __entry->pfn : 0,
|
||||
__entry->order,
|
||||
__entry->migratetype,
|
||||
__entry->order == 0)
|
||||
|
|
@ -260,7 +260,7 @@ DEFINE_EVENT_PRINT(mm_page, mm_page_pcpu_drain,
|
|||
TP_ARGS(page, order, migratetype),
|
||||
|
||||
TP_printk("page=%p pfn=%lu order=%d migratetype=%d",
|
||||
__entry->page, page_to_pfn(__entry->page),
|
||||
pfn_to_page(__entry->pfn), __entry->pfn,
|
||||
__entry->order, __entry->migratetype)
|
||||
);
|
||||
|
||||
|
|
@ -275,7 +275,7 @@ TRACE_EVENT(mm_page_alloc_extfrag,
|
|||
alloc_migratetype, fallback_migratetype),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field( struct page *, page )
|
||||
__field( unsigned long, pfn )
|
||||
__field( int, alloc_order )
|
||||
__field( int, fallback_order )
|
||||
__field( int, alloc_migratetype )
|
||||
|
|
@ -284,7 +284,7 @@ TRACE_EVENT(mm_page_alloc_extfrag,
|
|||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->page = page;
|
||||
__entry->pfn = page_to_pfn(page);
|
||||
__entry->alloc_order = alloc_order;
|
||||
__entry->fallback_order = fallback_order;
|
||||
__entry->alloc_migratetype = alloc_migratetype;
|
||||
|
|
@ -294,8 +294,8 @@ TRACE_EVENT(mm_page_alloc_extfrag,
|
|||
),
|
||||
|
||||
TP_printk("page=%p pfn=%lu alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d",
|
||||
__entry->page,
|
||||
page_to_pfn(__entry->page),
|
||||
pfn_to_page(__entry->pfn),
|
||||
__entry->pfn,
|
||||
__entry->alloc_order,
|
||||
__entry->fallback_order,
|
||||
pageblock_order,
|
||||
|
|
|
|||
|
|
@ -336,18 +336,18 @@ TRACE_EVENT(mm_vmscan_writepage,
|
|||
TP_ARGS(page, reclaim_flags),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(struct page *, page)
|
||||
__field(unsigned long, pfn)
|
||||
__field(int, reclaim_flags)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->page = page;
|
||||
__entry->pfn = page_to_pfn(page);
|
||||
__entry->reclaim_flags = reclaim_flags;
|
||||
),
|
||||
|
||||
TP_printk("page=%p pfn=%lu flags=%s",
|
||||
__entry->page,
|
||||
page_to_pfn(__entry->page),
|
||||
pfn_to_page(__entry->pfn),
|
||||
__entry->pfn,
|
||||
show_reclaim_flags(__entry->reclaim_flags))
|
||||
);
|
||||
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@ perf-kmem(1)
|
|||
|
||||
NAME
|
||||
----
|
||||
perf-kmem - Tool to trace/measure kernel memory(slab) properties
|
||||
perf-kmem - Tool to trace/measure kernel memory properties
|
||||
|
||||
SYNOPSIS
|
||||
--------
|
||||
|
|
@ -46,6 +46,12 @@ OPTIONS
|
|||
--raw-ip::
|
||||
Print raw ip instead of symbol
|
||||
|
||||
--slab::
|
||||
Analyze SLAB allocator events.
|
||||
|
||||
--page::
|
||||
Analyze page allocator events
|
||||
|
||||
SEE ALSO
|
||||
--------
|
||||
linkperf:perf-record[1]
|
||||
|
|
|
|||
|
|
@ -22,6 +22,11 @@
|
|||
#include <linux/string.h>
|
||||
#include <locale.h>
|
||||
|
||||
static int kmem_slab;
|
||||
static int kmem_page;
|
||||
|
||||
static long kmem_page_size;
|
||||
|
||||
struct alloc_stat;
|
||||
typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);
|
||||
|
||||
|
|
@ -226,6 +231,244 @@ static int perf_evsel__process_free_event(struct perf_evsel *evsel,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static u64 total_page_alloc_bytes;
|
||||
static u64 total_page_free_bytes;
|
||||
static u64 total_page_nomatch_bytes;
|
||||
static u64 total_page_fail_bytes;
|
||||
static unsigned long nr_page_allocs;
|
||||
static unsigned long nr_page_frees;
|
||||
static unsigned long nr_page_fails;
|
||||
static unsigned long nr_page_nomatch;
|
||||
|
||||
static bool use_pfn;
|
||||
|
||||
#define MAX_MIGRATE_TYPES 6
|
||||
#define MAX_PAGE_ORDER 11
|
||||
|
||||
static int order_stats[MAX_PAGE_ORDER][MAX_MIGRATE_TYPES];
|
||||
|
||||
struct page_stat {
|
||||
struct rb_node node;
|
||||
u64 page;
|
||||
int order;
|
||||
unsigned gfp_flags;
|
||||
unsigned migrate_type;
|
||||
u64 alloc_bytes;
|
||||
u64 free_bytes;
|
||||
int nr_alloc;
|
||||
int nr_free;
|
||||
};
|
||||
|
||||
static struct rb_root page_tree;
|
||||
static struct rb_root page_alloc_tree;
|
||||
static struct rb_root page_alloc_sorted;
|
||||
|
||||
static struct page_stat *search_page(unsigned long page, bool create)
|
||||
{
|
||||
struct rb_node **node = &page_tree.rb_node;
|
||||
struct rb_node *parent = NULL;
|
||||
struct page_stat *data;
|
||||
|
||||
while (*node) {
|
||||
s64 cmp;
|
||||
|
||||
parent = *node;
|
||||
data = rb_entry(*node, struct page_stat, node);
|
||||
|
||||
cmp = data->page - page;
|
||||
if (cmp < 0)
|
||||
node = &parent->rb_left;
|
||||
else if (cmp > 0)
|
||||
node = &parent->rb_right;
|
||||
else
|
||||
return data;
|
||||
}
|
||||
|
||||
if (!create)
|
||||
return NULL;
|
||||
|
||||
data = zalloc(sizeof(*data));
|
||||
if (data != NULL) {
|
||||
data->page = page;
|
||||
|
||||
rb_link_node(&data->node, parent, node);
|
||||
rb_insert_color(&data->node, &page_tree);
|
||||
}
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
static int page_stat_cmp(struct page_stat *a, struct page_stat *b)
|
||||
{
|
||||
if (a->page > b->page)
|
||||
return -1;
|
||||
if (a->page < b->page)
|
||||
return 1;
|
||||
if (a->order > b->order)
|
||||
return -1;
|
||||
if (a->order < b->order)
|
||||
return 1;
|
||||
if (a->migrate_type > b->migrate_type)
|
||||
return -1;
|
||||
if (a->migrate_type < b->migrate_type)
|
||||
return 1;
|
||||
if (a->gfp_flags > b->gfp_flags)
|
||||
return -1;
|
||||
if (a->gfp_flags < b->gfp_flags)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct page_stat *search_page_alloc_stat(struct page_stat *stat, bool create)
|
||||
{
|
||||
struct rb_node **node = &page_alloc_tree.rb_node;
|
||||
struct rb_node *parent = NULL;
|
||||
struct page_stat *data;
|
||||
|
||||
while (*node) {
|
||||
s64 cmp;
|
||||
|
||||
parent = *node;
|
||||
data = rb_entry(*node, struct page_stat, node);
|
||||
|
||||
cmp = page_stat_cmp(data, stat);
|
||||
if (cmp < 0)
|
||||
node = &parent->rb_left;
|
||||
else if (cmp > 0)
|
||||
node = &parent->rb_right;
|
||||
else
|
||||
return data;
|
||||
}
|
||||
|
||||
if (!create)
|
||||
return NULL;
|
||||
|
||||
data = zalloc(sizeof(*data));
|
||||
if (data != NULL) {
|
||||
data->page = stat->page;
|
||||
data->order = stat->order;
|
||||
data->gfp_flags = stat->gfp_flags;
|
||||
data->migrate_type = stat->migrate_type;
|
||||
|
||||
rb_link_node(&data->node, parent, node);
|
||||
rb_insert_color(&data->node, &page_alloc_tree);
|
||||
}
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
static bool valid_page(u64 pfn_or_page)
|
||||
{
|
||||
if (use_pfn && pfn_or_page == -1UL)
|
||||
return false;
|
||||
if (!use_pfn && pfn_or_page == 0)
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
static int perf_evsel__process_page_alloc_event(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
u64 page;
|
||||
unsigned int order = perf_evsel__intval(evsel, sample, "order");
|
||||
unsigned int gfp_flags = perf_evsel__intval(evsel, sample, "gfp_flags");
|
||||
unsigned int migrate_type = perf_evsel__intval(evsel, sample,
|
||||
"migratetype");
|
||||
u64 bytes = kmem_page_size << order;
|
||||
struct page_stat *stat;
|
||||
struct page_stat this = {
|
||||
.order = order,
|
||||
.gfp_flags = gfp_flags,
|
||||
.migrate_type = migrate_type,
|
||||
};
|
||||
|
||||
if (use_pfn)
|
||||
page = perf_evsel__intval(evsel, sample, "pfn");
|
||||
else
|
||||
page = perf_evsel__intval(evsel, sample, "page");
|
||||
|
||||
nr_page_allocs++;
|
||||
total_page_alloc_bytes += bytes;
|
||||
|
||||
if (!valid_page(page)) {
|
||||
nr_page_fails++;
|
||||
total_page_fail_bytes += bytes;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* This is to find the current page (with correct gfp flags and
|
||||
* migrate type) at free event.
|
||||
*/
|
||||
stat = search_page(page, true);
|
||||
if (stat == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
stat->order = order;
|
||||
stat->gfp_flags = gfp_flags;
|
||||
stat->migrate_type = migrate_type;
|
||||
|
||||
this.page = page;
|
||||
stat = search_page_alloc_stat(&this, true);
|
||||
if (stat == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
stat->nr_alloc++;
|
||||
stat->alloc_bytes += bytes;
|
||||
|
||||
order_stats[order][migrate_type]++;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int perf_evsel__process_page_free_event(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
u64 page;
|
||||
unsigned int order = perf_evsel__intval(evsel, sample, "order");
|
||||
u64 bytes = kmem_page_size << order;
|
||||
struct page_stat *stat;
|
||||
struct page_stat this = {
|
||||
.order = order,
|
||||
};
|
||||
|
||||
if (use_pfn)
|
||||
page = perf_evsel__intval(evsel, sample, "pfn");
|
||||
else
|
||||
page = perf_evsel__intval(evsel, sample, "page");
|
||||
|
||||
nr_page_frees++;
|
||||
total_page_free_bytes += bytes;
|
||||
|
||||
stat = search_page(page, false);
|
||||
if (stat == NULL) {
|
||||
pr_debug2("missing free at page %"PRIx64" (order: %d)\n",
|
||||
page, order);
|
||||
|
||||
nr_page_nomatch++;
|
||||
total_page_nomatch_bytes += bytes;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
this.page = page;
|
||||
this.gfp_flags = stat->gfp_flags;
|
||||
this.migrate_type = stat->migrate_type;
|
||||
|
||||
rb_erase(&stat->node, &page_tree);
|
||||
free(stat);
|
||||
|
||||
stat = search_page_alloc_stat(&this, false);
|
||||
if (stat == NULL)
|
||||
return -ENOENT;
|
||||
|
||||
stat->nr_free++;
|
||||
stat->free_bytes += bytes;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample);
|
||||
|
||||
|
|
@ -270,8 +513,9 @@ static double fragmentation(unsigned long n_req, unsigned long n_alloc)
|
|||
return 100.0 - (100.0 * n_req / n_alloc);
|
||||
}
|
||||
|
||||
static void __print_result(struct rb_root *root, struct perf_session *session,
|
||||
int n_lines, int is_caller)
|
||||
static void __print_slab_result(struct rb_root *root,
|
||||
struct perf_session *session,
|
||||
int n_lines, int is_caller)
|
||||
{
|
||||
struct rb_node *next;
|
||||
struct machine *machine = &session->machines.host;
|
||||
|
|
@ -323,9 +567,56 @@ static void __print_result(struct rb_root *root, struct perf_session *session,
|
|||
printf("%.105s\n", graph_dotted_line);
|
||||
}
|
||||
|
||||
static void print_summary(void)
|
||||
static const char * const migrate_type_str[] = {
|
||||
"UNMOVABL",
|
||||
"RECLAIM",
|
||||
"MOVABLE",
|
||||
"RESERVED",
|
||||
"CMA/ISLT",
|
||||
"UNKNOWN",
|
||||
};
|
||||
|
||||
static void __print_page_result(struct rb_root *root,
|
||||
struct perf_session *session __maybe_unused,
|
||||
int n_lines)
|
||||
{
|
||||
printf("\nSUMMARY\n=======\n");
|
||||
struct rb_node *next = rb_first(root);
|
||||
const char *format;
|
||||
|
||||
printf("\n%.80s\n", graph_dotted_line);
|
||||
printf(" %-16s | Total alloc (KB) | Hits | Order | Mig.type | GFP flags\n",
|
||||
use_pfn ? "PFN" : "Page");
|
||||
printf("%.80s\n", graph_dotted_line);
|
||||
|
||||
if (use_pfn)
|
||||
format = " %16llu | %'16llu | %'9d | %5d | %8s | %08lx\n";
|
||||
else
|
||||
format = " %016llx | %'16llu | %'9d | %5d | %8s | %08lx\n";
|
||||
|
||||
while (next && n_lines--) {
|
||||
struct page_stat *data;
|
||||
|
||||
data = rb_entry(next, struct page_stat, node);
|
||||
|
||||
printf(format, (unsigned long long)data->page,
|
||||
(unsigned long long)data->alloc_bytes / 1024,
|
||||
data->nr_alloc, data->order,
|
||||
migrate_type_str[data->migrate_type],
|
||||
(unsigned long)data->gfp_flags);
|
||||
|
||||
next = rb_next(next);
|
||||
}
|
||||
|
||||
if (n_lines == -1)
|
||||
printf(" ... | ... | ... | ... | ... | ... \n");
|
||||
|
||||
printf("%.80s\n", graph_dotted_line);
|
||||
}
|
||||
|
||||
static void print_slab_summary(void)
|
||||
{
|
||||
printf("\nSUMMARY (SLAB allocator)");
|
||||
printf("\n========================\n");
|
||||
printf("Total bytes requested: %'lu\n", total_requested);
|
||||
printf("Total bytes allocated: %'lu\n", total_allocated);
|
||||
printf("Total bytes wasted on internal fragmentation: %'lu\n",
|
||||
|
|
@ -335,13 +626,73 @@ static void print_summary(void)
|
|||
printf("Cross CPU allocations: %'lu/%'lu\n", nr_cross_allocs, nr_allocs);
|
||||
}
|
||||
|
||||
static void print_result(struct perf_session *session)
|
||||
static void print_page_summary(void)
|
||||
{
|
||||
int o, m;
|
||||
u64 nr_alloc_freed = nr_page_frees - nr_page_nomatch;
|
||||
u64 total_alloc_freed_bytes = total_page_free_bytes - total_page_nomatch_bytes;
|
||||
|
||||
printf("\nSUMMARY (page allocator)");
|
||||
printf("\n========================\n");
|
||||
printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total allocation requests",
|
||||
nr_page_allocs, total_page_alloc_bytes / 1024);
|
||||
printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total free requests",
|
||||
nr_page_frees, total_page_free_bytes / 1024);
|
||||
printf("\n");
|
||||
|
||||
printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total alloc+freed requests",
|
||||
nr_alloc_freed, (total_alloc_freed_bytes) / 1024);
|
||||
printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total alloc-only requests",
|
||||
nr_page_allocs - nr_alloc_freed,
|
||||
(total_page_alloc_bytes - total_alloc_freed_bytes) / 1024);
|
||||
printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total free-only requests",
|
||||
nr_page_nomatch, total_page_nomatch_bytes / 1024);
|
||||
printf("\n");
|
||||
|
||||
printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total allocation failures",
|
||||
nr_page_fails, total_page_fail_bytes / 1024);
|
||||
printf("\n");
|
||||
|
||||
printf("%5s %12s %12s %12s %12s %12s\n", "Order", "Unmovable",
|
||||
"Reclaimable", "Movable", "Reserved", "CMA/Isolated");
|
||||
printf("%.5s %.12s %.12s %.12s %.12s %.12s\n", graph_dotted_line,
|
||||
graph_dotted_line, graph_dotted_line, graph_dotted_line,
|
||||
graph_dotted_line, graph_dotted_line);
|
||||
|
||||
for (o = 0; o < MAX_PAGE_ORDER; o++) {
|
||||
printf("%5d", o);
|
||||
for (m = 0; m < MAX_MIGRATE_TYPES - 1; m++) {
|
||||
if (order_stats[o][m])
|
||||
printf(" %'12d", order_stats[o][m]);
|
||||
else
|
||||
printf(" %12c", '.');
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
static void print_slab_result(struct perf_session *session)
|
||||
{
|
||||
if (caller_flag)
|
||||
__print_result(&root_caller_sorted, session, caller_lines, 1);
|
||||
__print_slab_result(&root_caller_sorted, session, caller_lines, 1);
|
||||
if (alloc_flag)
|
||||
__print_result(&root_alloc_sorted, session, alloc_lines, 0);
|
||||
print_summary();
|
||||
__print_slab_result(&root_alloc_sorted, session, alloc_lines, 0);
|
||||
print_slab_summary();
|
||||
}
|
||||
|
||||
static void print_page_result(struct perf_session *session)
|
||||
{
|
||||
if (alloc_flag)
|
||||
__print_page_result(&page_alloc_sorted, session, alloc_lines);
|
||||
print_page_summary();
|
||||
}
|
||||
|
||||
static void print_result(struct perf_session *session)
|
||||
{
|
||||
if (kmem_slab)
|
||||
print_slab_result(session);
|
||||
if (kmem_page)
|
||||
print_page_result(session);
|
||||
}
|
||||
|
||||
struct sort_dimension {
|
||||
|
|
@ -353,8 +704,8 @@ struct sort_dimension {
|
|||
static LIST_HEAD(caller_sort);
|
||||
static LIST_HEAD(alloc_sort);
|
||||
|
||||
static void sort_insert(struct rb_root *root, struct alloc_stat *data,
|
||||
struct list_head *sort_list)
|
||||
static void sort_slab_insert(struct rb_root *root, struct alloc_stat *data,
|
||||
struct list_head *sort_list)
|
||||
{
|
||||
struct rb_node **new = &(root->rb_node);
|
||||
struct rb_node *parent = NULL;
|
||||
|
|
@ -383,8 +734,8 @@ static void sort_insert(struct rb_root *root, struct alloc_stat *data,
|
|||
rb_insert_color(&data->node, root);
|
||||
}
|
||||
|
||||
static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
|
||||
struct list_head *sort_list)
|
||||
static void __sort_slab_result(struct rb_root *root, struct rb_root *root_sorted,
|
||||
struct list_head *sort_list)
|
||||
{
|
||||
struct rb_node *node;
|
||||
struct alloc_stat *data;
|
||||
|
|
@ -396,26 +747,79 @@ static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
|
|||
|
||||
rb_erase(node, root);
|
||||
data = rb_entry(node, struct alloc_stat, node);
|
||||
sort_insert(root_sorted, data, sort_list);
|
||||
sort_slab_insert(root_sorted, data, sort_list);
|
||||
}
|
||||
}
|
||||
|
||||
static void sort_page_insert(struct rb_root *root, struct page_stat *data)
|
||||
{
|
||||
struct rb_node **new = &root->rb_node;
|
||||
struct rb_node *parent = NULL;
|
||||
|
||||
while (*new) {
|
||||
struct page_stat *this;
|
||||
int cmp = 0;
|
||||
|
||||
this = rb_entry(*new, struct page_stat, node);
|
||||
parent = *new;
|
||||
|
||||
/* TODO: support more sort key */
|
||||
cmp = data->alloc_bytes - this->alloc_bytes;
|
||||
|
||||
if (cmp > 0)
|
||||
new = &parent->rb_left;
|
||||
else
|
||||
new = &parent->rb_right;
|
||||
}
|
||||
|
||||
rb_link_node(&data->node, parent, new);
|
||||
rb_insert_color(&data->node, root);
|
||||
}
|
||||
|
||||
static void __sort_page_result(struct rb_root *root, struct rb_root *root_sorted)
|
||||
{
|
||||
struct rb_node *node;
|
||||
struct page_stat *data;
|
||||
|
||||
for (;;) {
|
||||
node = rb_first(root);
|
||||
if (!node)
|
||||
break;
|
||||
|
||||
rb_erase(node, root);
|
||||
data = rb_entry(node, struct page_stat, node);
|
||||
sort_page_insert(root_sorted, data);
|
||||
}
|
||||
}
|
||||
|
||||
static void sort_result(void)
|
||||
{
|
||||
__sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
|
||||
__sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
|
||||
if (kmem_slab) {
|
||||
__sort_slab_result(&root_alloc_stat, &root_alloc_sorted,
|
||||
&alloc_sort);
|
||||
__sort_slab_result(&root_caller_stat, &root_caller_sorted,
|
||||
&caller_sort);
|
||||
}
|
||||
if (kmem_page) {
|
||||
__sort_page_result(&page_alloc_tree, &page_alloc_sorted);
|
||||
}
|
||||
}
|
||||
|
||||
static int __cmd_kmem(struct perf_session *session)
|
||||
{
|
||||
int err = -EINVAL;
|
||||
struct perf_evsel *evsel;
|
||||
const struct perf_evsel_str_handler kmem_tracepoints[] = {
|
||||
/* slab allocator */
|
||||
{ "kmem:kmalloc", perf_evsel__process_alloc_event, },
|
||||
{ "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, },
|
||||
{ "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, },
|
||||
{ "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, },
|
||||
{ "kmem:kfree", perf_evsel__process_free_event, },
|
||||
{ "kmem:kmem_cache_free", perf_evsel__process_free_event, },
|
||||
/* page allocator */
|
||||
{ "kmem:mm_page_alloc", perf_evsel__process_page_alloc_event, },
|
||||
{ "kmem:mm_page_free", perf_evsel__process_page_free_event, },
|
||||
};
|
||||
|
||||
if (!perf_session__has_traces(session, "kmem record"))
|
||||
|
|
@ -426,10 +830,20 @@ static int __cmd_kmem(struct perf_session *session)
|
|||
goto out;
|
||||
}
|
||||
|
||||
evlist__for_each(session->evlist, evsel) {
|
||||
if (!strcmp(perf_evsel__name(evsel), "kmem:mm_page_alloc") &&
|
||||
perf_evsel__field(evsel, "pfn")) {
|
||||
use_pfn = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
setup_pager();
|
||||
err = perf_session__process_events(session);
|
||||
if (err != 0)
|
||||
if (err != 0) {
|
||||
pr_err("error during process events: %d\n", err);
|
||||
goto out;
|
||||
}
|
||||
sort_result();
|
||||
print_result(session);
|
||||
out:
|
||||
|
|
@ -612,6 +1026,22 @@ static int parse_alloc_opt(const struct option *opt __maybe_unused,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int parse_slab_opt(const struct option *opt __maybe_unused,
|
||||
const char *arg __maybe_unused,
|
||||
int unset __maybe_unused)
|
||||
{
|
||||
kmem_slab = (kmem_page + 1);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int parse_page_opt(const struct option *opt __maybe_unused,
|
||||
const char *arg __maybe_unused,
|
||||
int unset __maybe_unused)
|
||||
{
|
||||
kmem_page = (kmem_slab + 1);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int parse_line_opt(const struct option *opt __maybe_unused,
|
||||
const char *arg, int unset __maybe_unused)
|
||||
{
|
||||
|
|
@ -634,6 +1064,8 @@ static int __cmd_record(int argc, const char **argv)
|
|||
{
|
||||
const char * const record_args[] = {
|
||||
"record", "-a", "-R", "-c", "1",
|
||||
};
|
||||
const char * const slab_events[] = {
|
||||
"-e", "kmem:kmalloc",
|
||||
"-e", "kmem:kmalloc_node",
|
||||
"-e", "kmem:kfree",
|
||||
|
|
@ -641,10 +1073,19 @@ static int __cmd_record(int argc, const char **argv)
|
|||
"-e", "kmem:kmem_cache_alloc_node",
|
||||
"-e", "kmem:kmem_cache_free",
|
||||
};
|
||||
const char * const page_events[] = {
|
||||
"-e", "kmem:mm_page_alloc",
|
||||
"-e", "kmem:mm_page_free",
|
||||
};
|
||||
unsigned int rec_argc, i, j;
|
||||
const char **rec_argv;
|
||||
|
||||
rec_argc = ARRAY_SIZE(record_args) + argc - 1;
|
||||
if (kmem_slab)
|
||||
rec_argc += ARRAY_SIZE(slab_events);
|
||||
if (kmem_page)
|
||||
rec_argc += ARRAY_SIZE(page_events);
|
||||
|
||||
rec_argv = calloc(rec_argc + 1, sizeof(char *));
|
||||
|
||||
if (rec_argv == NULL)
|
||||
|
|
@ -653,6 +1094,15 @@ static int __cmd_record(int argc, const char **argv)
|
|||
for (i = 0; i < ARRAY_SIZE(record_args); i++)
|
||||
rec_argv[i] = strdup(record_args[i]);
|
||||
|
||||
if (kmem_slab) {
|
||||
for (j = 0; j < ARRAY_SIZE(slab_events); j++, i++)
|
||||
rec_argv[i] = strdup(slab_events[j]);
|
||||
}
|
||||
if (kmem_page) {
|
||||
for (j = 0; j < ARRAY_SIZE(page_events); j++, i++)
|
||||
rec_argv[i] = strdup(page_events[j]);
|
||||
}
|
||||
|
||||
for (j = 1; j < (unsigned int)argc; j++, i++)
|
||||
rec_argv[i] = argv[j];
|
||||
|
||||
|
|
@ -679,6 +1129,10 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
|
|||
OPT_CALLBACK('l', "line", NULL, "num", "show n lines", parse_line_opt),
|
||||
OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
|
||||
OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
|
||||
OPT_CALLBACK_NOOPT(0, "slab", NULL, NULL, "Analyze slab allocator",
|
||||
parse_slab_opt),
|
||||
OPT_CALLBACK_NOOPT(0, "page", NULL, NULL, "Analyze page allocator",
|
||||
parse_page_opt),
|
||||
OPT_END()
|
||||
};
|
||||
const char *const kmem_subcommands[] = { "record", "stat", NULL };
|
||||
|
|
@ -695,6 +1149,9 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
|
|||
if (!argc)
|
||||
usage_with_options(kmem_usage, kmem_options);
|
||||
|
||||
if (kmem_slab == 0 && kmem_page == 0)
|
||||
kmem_slab = 1; /* for backward compatibility */
|
||||
|
||||
if (!strncmp(argv[0], "rec", 3)) {
|
||||
symbol__init(NULL);
|
||||
return __cmd_record(argc, argv);
|
||||
|
|
@ -706,6 +1163,17 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
|
|||
if (session == NULL)
|
||||
return -1;
|
||||
|
||||
if (kmem_page) {
|
||||
struct perf_evsel *evsel = perf_evlist__first(session->evlist);
|
||||
|
||||
if (evsel == NULL || evsel->tp_format == NULL) {
|
||||
pr_err("invalid event found.. aborting\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
kmem_page_size = pevent_get_page_size(evsel->tp_format->pevent);
|
||||
}
|
||||
|
||||
symbol__init(&session->header.env);
|
||||
|
||||
if (!strcmp(argv[0], "stat")) {
|
||||
|
|
|
|||
|
|
@ -332,6 +332,7 @@ static int find_alternative_probe_point(struct debuginfo *dinfo,
|
|||
else {
|
||||
result->offset += pp->offset;
|
||||
result->line += pp->line;
|
||||
result->retprobe = pp->retprobe;
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
|
|
@ -654,65 +655,6 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
|
|||
return ntevs;
|
||||
}
|
||||
|
||||
/*
|
||||
* Find a src file from a DWARF tag path. Prepend optional source path prefix
|
||||
* and chop off leading directories that do not exist. Result is passed back as
|
||||
* a newly allocated path on success.
|
||||
* Return 0 if file was found and readable, -errno otherwise.
|
||||
*/
|
||||
static int get_real_path(const char *raw_path, const char *comp_dir,
|
||||
char **new_path)
|
||||
{
|
||||
const char *prefix = symbol_conf.source_prefix;
|
||||
|
||||
if (!prefix) {
|
||||
if (raw_path[0] != '/' && comp_dir)
|
||||
/* If not an absolute path, try to use comp_dir */
|
||||
prefix = comp_dir;
|
||||
else {
|
||||
if (access(raw_path, R_OK) == 0) {
|
||||
*new_path = strdup(raw_path);
|
||||
return *new_path ? 0 : -ENOMEM;
|
||||
} else
|
||||
return -errno;
|
||||
}
|
||||
}
|
||||
|
||||
*new_path = malloc((strlen(prefix) + strlen(raw_path) + 2));
|
||||
if (!*new_path)
|
||||
return -ENOMEM;
|
||||
|
||||
for (;;) {
|
||||
sprintf(*new_path, "%s/%s", prefix, raw_path);
|
||||
|
||||
if (access(*new_path, R_OK) == 0)
|
||||
return 0;
|
||||
|
||||
if (!symbol_conf.source_prefix) {
|
||||
/* In case of searching comp_dir, don't retry */
|
||||
zfree(new_path);
|
||||
return -errno;
|
||||
}
|
||||
|
||||
switch (errno) {
|
||||
case ENAMETOOLONG:
|
||||
case ENOENT:
|
||||
case EROFS:
|
||||
case EFAULT:
|
||||
raw_path = strchr(++raw_path, '/');
|
||||
if (!raw_path) {
|
||||
zfree(new_path);
|
||||
return -ENOENT;
|
||||
}
|
||||
continue;
|
||||
|
||||
default:
|
||||
zfree(new_path);
|
||||
return -errno;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define LINEBUF_SIZE 256
|
||||
#define NR_ADDITIONAL_LINES 2
|
||||
|
||||
|
|
|
|||
|
|
@ -855,11 +855,22 @@ static int probe_point_lazy_walker(const char *fname, int lineno,
|
|||
static int find_probe_point_lazy(Dwarf_Die *sp_die, struct probe_finder *pf)
|
||||
{
|
||||
int ret = 0;
|
||||
char *fpath;
|
||||
|
||||
if (intlist__empty(pf->lcache)) {
|
||||
const char *comp_dir;
|
||||
|
||||
comp_dir = cu_get_comp_dir(&pf->cu_die);
|
||||
ret = get_real_path(pf->fname, comp_dir, &fpath);
|
||||
if (ret < 0) {
|
||||
pr_warning("Failed to find source file path.\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Matching lazy line pattern */
|
||||
ret = find_lazy_match_lines(pf->lcache, pf->fname,
|
||||
ret = find_lazy_match_lines(pf->lcache, fpath,
|
||||
pf->pev->point.lazy_line);
|
||||
free(fpath);
|
||||
if (ret <= 0)
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -1055,7 +1066,7 @@ static int debuginfo__find_probes(struct debuginfo *dbg,
|
|||
if (pp->function)
|
||||
ret = find_probe_point_by_func(pf);
|
||||
else if (pp->lazy_line)
|
||||
ret = find_probe_point_lazy(NULL, pf);
|
||||
ret = find_probe_point_lazy(&pf->cu_die, pf);
|
||||
else {
|
||||
pf->lno = pp->line;
|
||||
ret = find_probe_point_by_line(pf);
|
||||
|
|
@ -1622,3 +1633,61 @@ int debuginfo__find_line_range(struct debuginfo *dbg, struct line_range *lr)
|
|||
return (ret < 0) ? ret : lf.found;
|
||||
}
|
||||
|
||||
/*
|
||||
* Find a src file from a DWARF tag path. Prepend optional source path prefix
|
||||
* and chop off leading directories that do not exist. Result is passed back as
|
||||
* a newly allocated path on success.
|
||||
* Return 0 if file was found and readable, -errno otherwise.
|
||||
*/
|
||||
int get_real_path(const char *raw_path, const char *comp_dir,
|
||||
char **new_path)
|
||||
{
|
||||
const char *prefix = symbol_conf.source_prefix;
|
||||
|
||||
if (!prefix) {
|
||||
if (raw_path[0] != '/' && comp_dir)
|
||||
/* If not an absolute path, try to use comp_dir */
|
||||
prefix = comp_dir;
|
||||
else {
|
||||
if (access(raw_path, R_OK) == 0) {
|
||||
*new_path = strdup(raw_path);
|
||||
return *new_path ? 0 : -ENOMEM;
|
||||
} else
|
||||
return -errno;
|
||||
}
|
||||
}
|
||||
|
||||
*new_path = malloc((strlen(prefix) + strlen(raw_path) + 2));
|
||||
if (!*new_path)
|
||||
return -ENOMEM;
|
||||
|
||||
for (;;) {
|
||||
sprintf(*new_path, "%s/%s", prefix, raw_path);
|
||||
|
||||
if (access(*new_path, R_OK) == 0)
|
||||
return 0;
|
||||
|
||||
if (!symbol_conf.source_prefix) {
|
||||
/* In case of searching comp_dir, don't retry */
|
||||
zfree(new_path);
|
||||
return -errno;
|
||||
}
|
||||
|
||||
switch (errno) {
|
||||
case ENAMETOOLONG:
|
||||
case ENOENT:
|
||||
case EROFS:
|
||||
case EFAULT:
|
||||
raw_path = strchr(++raw_path, '/');
|
||||
if (!raw_path) {
|
||||
zfree(new_path);
|
||||
return -ENOENT;
|
||||
}
|
||||
continue;
|
||||
|
||||
default:
|
||||
zfree(new_path);
|
||||
return -errno;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -55,6 +55,10 @@ extern int debuginfo__find_available_vars_at(struct debuginfo *dbg,
|
|||
struct variable_list **vls,
|
||||
int max_points, bool externs);
|
||||
|
||||
/* Find a src file from a DWARF tag path */
|
||||
int get_real_path(const char *raw_path, const char *comp_dir,
|
||||
char **new_path);
|
||||
|
||||
struct probe_finder {
|
||||
struct perf_probe_event *pev; /* Target probe event */
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue