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/linux-6.3-rc2/lib/
A Dtest_user_copy.c64 kmem += start; in test_check_nonzero_user()
83 kmem[i] = 0xff; in test_check_nonzero_user()
85 kmem[i] = 0xff; in test_check_nonzero_user()
183 char *kmem; in test_user_copy_init() local
195 if (!kmem) in test_user_copy_init()
203 kfree(kmem); in test_user_copy_init()
219 ret |= test(memcmp(kmem, kmem + PAGE_SIZE, PAGE_SIZE), in test_user_copy_init()
261 ret |= test(!copy_from_user(kmem, (char __user *)(kmem + PAGE_SIZE), in test_user_copy_init()
266 ret |= test(memcmp(kmem + PAGE_SIZE, kmem, PAGE_SIZE), in test_user_copy_init()
280 ret |= test(!copy_to_user((char __user *)kmem, kmem + PAGE_SIZE, in test_user_copy_init()
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/linux-6.3-rc2/tools/perf/Documentation/
A Dexamples.txt31 titan:~> perf stat -e kmem:mm_page_pcpu_drain -e kmem:mm_page_alloc
32 -e kmem:mm_page_free_batched -e kmem:mm_page_free ./hackbench 10
38 27576 kmem:mm_page_alloc
40 20934 kmem:mm_page_free
48 kmem:mm_page_alloc -e kmem:mm_page_free_batched -e
49 kmem:mm_page_free ./hackbench 10
161 kmem:mm_page_alloc -e kmem:mm_page_free_batched -e
162 kmem:mm_page_free sleep 10
177 kmem:mm_page_alloc -e kmem:mm_page_free_batched -e
178 kmem:mm_page_free sleep 1
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A Dperf-kmem.txt1 perf-kmem(1)
6 perf-kmem - Tool to trace/measure kernel memory properties
11 'perf kmem' [<options>] {record|stat}
15 There are two variants of perf kmem:
17 'perf kmem [<options>] record [<perf-record-options>] <command>' to
18 record the kmem events of an arbitrary workload. Additional 'perf
22 'perf kmem [<options>] stat' to report kernel memory statistics.
67 Show live page stat. The perf kmem shows total allocation stat by
A Dperf.txt87 linkperf:perf-kmem[1], linkperf:perf-kvm[1], linkperf:perf-lock[1],
/linux-6.3-rc2/mm/kasan/
A Dkasan_test_module.c20 char *kmem; in copy_user_test() local
25 kmem = kmalloc(size, GFP_KERNEL); in copy_user_test()
26 if (!kmem) in copy_user_test()
34 kfree(kmem); in copy_user_test()
41 unused = copy_from_user(kmem, usermem, size + 1); in copy_user_test()
44 unused = copy_to_user(usermem, kmem, size + 1); in copy_user_test()
47 unused = __copy_from_user(kmem, usermem, size + 1); in copy_user_test()
50 unused = __copy_to_user(usermem, kmem, size + 1); in copy_user_test()
56 unused = __copy_to_user_inatomic(usermem, kmem, size + 1); in copy_user_test()
59 unused = strncpy_from_user(kmem, usermem, size + 1); in copy_user_test()
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/linux-6.3-rc2/tools/testing/selftests/ftrace/test.d/filter/
A Devent-filter-function.tc16 echo 'call_site.function == exit_mmap' > events/kmem/kmem_cache_free/filter
17 echo 1 > events/kmem/kmem_cache_free/enable
20 echo 0 > events/kmem/kmem_cache_free/enable
39 echo "call_site.function == 0x$address" > events/kmem/kmem_cache_free/filter
40 echo 1 > events/kmem/kmem_cache_free/enable
43 echo 0 > events/kmem/kmem_cache_free/enable
/linux-6.3-rc2/Documentation/trace/
A Dtracepoint-analysis.rst98 -e kmem:mm_page_alloc -e kmem:mm_page_free \
99 -e kmem:mm_page_free_batched \
104 2143 kmem:mm_page_free
125 $ perf stat -e kmem:mm_page_alloc -e kmem:mm_page_free \
153 $ perf stat --repeat 5 -e kmem:mm_page_alloc -e kmem:mm_page_free
176 $ perf stat -e kmem:mm_page_alloc -e kmem:mm_page_free \
177 -e kmem:mm_page_free_batched \
229 -e kmem:mm_page_alloc -e kmem:mm_page_free \
230 -e kmem:mm_page_free_batched \
271 -e kmem:mm_page_alloc -e kmem:mm_page_free \
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A Dindex.rst18 events-kmem
A Devents.rst423 # echo 'enable_event:kmem:kmalloc:1' > \
430 # echo 'disable_event:kmem:kmalloc' > \
440 # echo '!enable_event:kmem:kmalloc:1' > \
443 # echo '!disable_event:kmem:kmalloc' > \
449 kmem:kmalloc and sched:sched_switch, but can't have two kmem:kmalloc
450 versions such as kmem:kmalloc and kmem:kmalloc:1 or 'kmem:kmalloc if
463 /sys/kernel/tracing/events/kmem/kmalloc/trigger
469 /sys/kernel/tracing/events/kmem/kmalloc/trigger
478 /sys/kernel/tracing/events/kmem/kmalloc/trigger
481 /sys/kernel/tracing/events/kmem/kmalloc/trigger
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A Devents-kmem.rst2 Subsystem Trace Points: kmem
5 The kmem tracing system captures events related to object and page allocation
/linux-6.3-rc2/tools/testing/selftests/ftrace/test.d/trigger/
A Dtrigger-hist.tc44 echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger
46 grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/nu…
53 echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger
55 grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]*+0x[0-9a-f][0-9a-f]*' events/kmem/kmall…
A Dtrigger-hist-mod.tc45 echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger
47 grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \
/linux-6.3-rc2/tools/perf/scripts/perl/bin/
A Dcheck-perf-trace-record2 perf record -a -e kmem:kmalloc -e irq:softirq_entry -e kmem:kfree
/linux-6.3-rc2/arch/x86/kernel/cpu/resctrl/
A Dpseudo_lock.c251 kfree(plr->kmem); in pseudo_lock_region_clear()
252 plr->kmem = NULL; in pseudo_lock_region_clear()
366 plr->kmem = kzalloc(plr->size, GFP_KERNEL); in pseudo_lock_region_alloc()
367 if (!plr->kmem) { in pseudo_lock_region_alloc()
471 mem_r = plr->kmem; in pseudo_lock_fn()
887 mem_r = READ_ONCE(plr->kmem); in measure_cycles_lat_fn()
992 mem_r = READ_ONCE(plr->kmem); in measure_residency_fn()
1519 physical = __pa(plr->kmem) >> PAGE_SHIFT; in pseudo_lock_dev_mmap()
1541 memset(plr->kmem + off, 0, vsize); in pseudo_lock_dev_mmap()
/linux-6.3-rc2/drivers/infiniband/hw/hns/
A Dhns_roce_mr.c657 if (mtr->kmem) { in mtr_free_bufs()
658 hns_roce_buf_free(hr_dev, mtr->kmem); in mtr_free_bufs()
659 mtr->kmem = NULL; in mtr_free_bufs()
673 mtr->kmem = NULL; in mtr_alloc_bufs()
683 mtr->kmem = hns_roce_buf_alloc(hr_dev, total_size, in mtr_alloc_bufs()
687 if (IS_ERR(mtr->kmem)) { in mtr_alloc_bufs()
689 PTR_ERR(mtr->kmem)); in mtr_alloc_bufs()
690 return PTR_ERR(mtr->kmem); in mtr_alloc_bufs()
715 mtr->kmem, page_shift); in mtr_map_bufs()
979 mtr->kmem = NULL; in hns_roce_mtr_create()
/linux-6.3-rc2/drivers/crypto/nx/
A Dnx.c309 memset(nx_ctx->kmem, 0, nx_ctx->kmem_len); in nx_ctx_init()
670 nx_ctx->kmem = kmalloc(nx_ctx->kmem_len, GFP_KERNEL); in nx_crypto_ctx_init()
671 if (!nx_ctx->kmem) in nx_crypto_ctx_init()
675 nx_ctx->csbcpb = (struct nx_csbcpb *)(round_up((u64)nx_ctx->kmem, in nx_crypto_ctx_init()
750 kfree_sensitive(nx_ctx->kmem); in nx_crypto_ctx_exit()
766 kfree_sensitive(nx_ctx->kmem); in nx_crypto_ctx_aead_exit()
A Dnx.h119 void *kmem; /* unaligned, kmalloc'd buffer */ member
/linux-6.3-rc2/drivers/dax/
A DMakefile4 obj-$(CONFIG_DEV_DAX_KMEM) += kmem.o
/linux-6.3-rc2/tools/perf/scripts/perl/
A Dcheck-perf-trace.pl43 sub kmem::kmalloc subroutine
/linux-6.3-rc2/tools/perf/
A Dcommand-list.txt19 perf-kmem mainporcelain traceevent
A DBuild25 perf-$(CONFIG_LIBTRACEEVENT) += builtin-kmem.o
A Dperf-completion.sh203 if [[ $prev_skip_opts == @(kvm|kmem|mem|lock|sched|
/linux-6.3-rc2/Documentation/translations/zh_CN/core-api/
A Dmemory-allocation.rst53 * 从用户空间触发的不可信任的分配应该是kmem核算的对象，必须设置 ``__GFP_ACCOUNT`` 位。
/linux-6.3-rc2/Documentation/admin-guide/cgroup-v1/
A Dmemory.rst95 memory.kmem.limit_in_bytes This knob is deprecated and writing to
97 memory.kmem.usage_in_bytes show current kernel memory allocation
98 memory.kmem.failcnt show the number of kernel memory usage
100 memory.kmem.max_usage_in_bytes show max kernel memory usage recorded
102 memory.kmem.tcp.limit_in_bytes set/show hard limit for tcp buf memory
103 memory.kmem.tcp.usage_in_bytes show current tcp buf memory allocation
104 memory.kmem.tcp.failcnt show the number of tcp buf memory usage
106 memory.kmem.tcp.max_usage_in_bytes show max tcp buf memory usage recorded
324 memory.kmem.usage_in_bytes, or in a separate counter when it makes sense.
327 The main "kmem" counter is fed into the main counter, so kmem charges will
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/linux-6.3-rc2/fs/xfs/
A DMakefile95 kmem.o

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