| /aosp_15_r20/external/ltp/testcases/kernel/syscalls/readahead/ |
| H A D | readahead02.c | 7 * functional test for readahead() syscall
9 * This test is measuring effects of readahead syscall.
10 * It mmaps/reads a test file with and without prior call to readahead.
56 return readahead(fd, offset, len); in libc_readahead()
61 /* Should have the same effect as readahead() syscall */ in fadvise_willneed()
71 /* Use either readahead() syscall or POSIX_FADV_WILLNEED */
72 int (*readahead)(int fd, off_t offset, size_t len); member
74 { "readahead on file", 0, 0, libc_readahead },
75 { "readahead on overlayfs file", 1, 0, libc_readahead },
146 * @do_readahead: call readahead prior to reading file content?
[all …]
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| H A D | readahead01.c | 10 * Verify that readahead() syscall fails with:
13 * - EINVAL when fd does not refer to a file type to which readahead()
36 TST_EXP_FAIL(readahead(-1, 0, getpagesize()), EBADF, in test_bad_fd()
37 "readahead() with fd = -1"); in test_bad_fd()
43 TST_EXP_FAIL(readahead(fd[0], 0, getpagesize()), EBADF, in test_bad_fd()
44 "readahead() with invalid fd"); in test_bad_fd()
64 TST_EXP_FAIL_ARR(readahead(fd->fd, 0, getpagesize()), exp_errnos, in test_invalid_fd()
65 ARRAY_SIZE(exp_errnos), "readahead() on %s", tst_fd_desc(fd)); in test_invalid_fd()
78 /* check if readahead syscall is supported */ in setup()
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| /aosp_15_r20/system/core/fs_mgr/libsnapshot/snapuserd/user-space-merge/ |
| H A D | snapuserd_readahead.cpp | 32 ReadAhead::ReadAhead(const std::string& cow_device, const std::string& backing_device, in ReadAhead() function in android::snapshot::ReadAhead
42 void ReadAhead::CheckOverlap(const CowOperation* cow_op) { in CheckOverlap()
45 SNAP_LOG(ERROR) << "ReadAhead operation has no source offset: " << *cow_op; in CheckOverlap()
64 int ReadAhead::PrepareNextReadAhead(uint64_t* source_offset, int* pending_ops, in PrepareNextReadAhead()
150 bool ReadAhead::ReconstructDataFromCow() { in ReconstructDataFromCow()
281 bool ReadAhead::ReadAheadAsyncIO() { in ReadAheadAsyncIO()
393 void ReadAhead::UpdateScratchMetadata() { in UpdateScratchMetadata()
426 bool ReadAhead::ReapIoCompletions(int pending_ios_to_complete) { in ReapIoCompletions()
458 void ReadAhead::ProcessXorData(size_t& block_xor_index, size_t& xor_index, in ProcessXorData()
497 bool ReadAhead::ReadXorData(size_t block_index, size_t xor_op_index, in ReadXorData()
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| /aosp_15_r20/system/incremental_delivery/incfs/tests/ |
| H A D | MountRegistry_test.cpp | 114 …s /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 in TEST_F()
115 …s /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 in TEST_F()
135 …s /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 in TEST_F()
136 …s /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 in TEST_F()
152 …red:56 - incremental-fs /data/incremental2 rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid in TEST_F()
153 …remental/MT_data_app_vmdl199/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid in TEST_F()
154 …remental/MT_data_app_vmdl203/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid in TEST_F()
155 …remental/MT_data_app_vmdl154/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid in TEST_F()
156 …remental/MT_data_app_vmdl154/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid in TEST_F()
157 …remental/MT_data_app_vmdl209/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid in TEST_F()
[all …]
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| /aosp_15_r20/external/xz-java/src/org/tukaani/xz/lzma/ |
| H A D | LZMAEncoder.java | 67 int readAhead = -1; field in LZMAEncoder
204 uncompressedSize += readAhead + 1; in reset()
205 readAhead = -1; in reset()
233 int posState = (lz.getPos() - readAhead) & posMask; in encodeLZMA1EndMarker()
262 assert readAhead == -1; in encodeInit()
273 --readAhead; in encodeInit()
274 assert readAhead == -1; in encodeInit()
283 if (!lz.hasEnoughData(readAhead + 1)) in encodeSymbol()
288 assert readAhead >= 0; in encodeSymbol() local
289 int posState = (lz.getPos() - readAhead) & posMask; in encodeSymbol()
[all …]
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| /aosp_15_r20/external/xmp_toolkit/XMPCore/src/com/adobe/xmp/impl/ |
| H A D | FixASCIIControlsReader.java | 59 int readAhead = 0; in read() local
67 available = super.read(readAheadBuffer, readAhead, 1) == 1; in read()
70 char c = processChar(readAheadBuffer[readAhead]); in read()
79 readAhead = 0; in read()
84 unread(readAheadBuffer, 0, readAhead + 1); in read()
85 readAhead = 0; in read()
89 readAhead++; in read()
92 else if (readAhead > 0) in read()
95 unread(readAheadBuffer, 0, readAhead); in read()
97 readAhead = 0; in read()
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| H A D | Latin1Converter.java | 73 int readAhead = 0; in convert() local
101 readAheadBuffer[readAhead++] = (byte) b; in convert()
116 readAheadBuffer[readAhead++] = (byte) b; in convert()
121 out.append(readAheadBuffer, 0, readAhead); in convert()
122 readAhead = 0; in convert()
135 i = i - readAhead; in convert()
136 readAhead = 0; in convert()
147 for (int j = 0; j < readAhead; j++) in convert()
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| /aosp_15_r20/external/bcc/libbpf-tools/ |
| H A D | readahead.c | 4 // Based on readahead(8) from BPF-Perf-Tools-Book by Brendan Gregg.
12 #include "readahead.h"
13 #include "readahead.skel.h"
25 const char *argp_program_version = "readahead 0.1";
31 "USAGE: readahead [--help] [-d DURATION]\n"
34 " readahead # summarize on-CPU time as a histogram\n"
35 " readahead -d 10 # trace for 10 seconds only\n";
157 printf("Readahead unused/total pages: %d/%d\n", in main()
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| /aosp_15_r20/external/toybox/toys/other/ |
| H A D | readahead.c | 1 /* readahead.c - preload files into disk cache.
7 USE_READAHEAD(NEWTOY(readahead, NULL, TOYFLAG_BIN))
9 config READAHEAD
10 bool "readahead"
13 usage: readahead FILE...
29 if (rc) perror_msg("readahead: %s", name); in do_readahead()
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| /aosp_15_r20/external/bcc/man/man8/ |
| H A D | readahead.8 | 1 .TH readahead 8 "2020-08-20" "USER COMMANDS"
3 readahead \- Show performance of read-ahead cache
5 .B readahead [-d DURATION]
12 readahead mechanism in the kernel and then uses \fB__page_cache_alloc()\fR and \fBmark_page_accesse…
33 .B readahead -d 30
59 readahead(2), madvise(2)
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| /aosp_15_r20/external/python/cpython2/Modules/_io/ |
| D | iobase.c | 480 PyObject *readahead = PyObject_CallMethod(self, "peek", "i", 1); in iobase_readline() local
481 if (readahead == NULL) { in iobase_readline()
489 if (!PyBytes_Check(readahead)) { in iobase_readline()
492 "not '%.200s'", Py_TYPE(readahead)->tp_name); in iobase_readline()
493 Py_DECREF(readahead); in iobase_readline()
496 if (PyBytes_GET_SIZE(readahead) > 0) { in iobase_readline()
498 const char *buf = PyBytes_AS_STRING(readahead); in iobase_readline()
501 if (n >= PyBytes_GET_SIZE(readahead) || n >= limit) in iobase_readline()
509 if (n >= PyBytes_GET_SIZE(readahead)) in iobase_readline()
517 Py_DECREF(readahead); in iobase_readline()
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| /aosp_15_r20/external/python/cpython3/Modules/_io/ |
| D | iobase.c | 553 PyObject *readahead = PyObject_CallOneArg(peek, _PyLong_GetOne()); in _io__IOBase_readline_impl() local
554 if (readahead == NULL) { in _io__IOBase_readline_impl()
562 if (!PyBytes_Check(readahead)) { in _io__IOBase_readline_impl()
565 "not '%.200s'", Py_TYPE(readahead)->tp_name); in _io__IOBase_readline_impl()
566 Py_DECREF(readahead); in _io__IOBase_readline_impl()
569 if (PyBytes_GET_SIZE(readahead) > 0) { in _io__IOBase_readline_impl()
571 const char *buf = PyBytes_AS_STRING(readahead); in _io__IOBase_readline_impl()
574 if (n >= PyBytes_GET_SIZE(readahead) || n >= limit) in _io__IOBase_readline_impl()
582 if (n >= PyBytes_GET_SIZE(readahead)) in _io__IOBase_readline_impl()
590 Py_DECREF(readahead); in _io__IOBase_readline_impl()
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| /aosp_15_r20/external/linux-kselftest/tools/testing/selftests/mincore/ |
| H A D | mincore_selftest.c | 181 * containing the address and a number of subsequent pages (readahead).
183 * The actual readahead settings depend on the test environment, so we
246 * few pages (the readahead window) to be populated too. in TEST()
268 * End of the readahead window. The rest of the pages shouldn't in TEST()
275 TH_LOG("Unexpected page in memory beyond readahead window"); in TEST()
290 * any readahead in this case.
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| /aosp_15_r20/external/e2fsprogs/e2fsck/ |
| H A D | readahead.c | 2 * readahead.c -- Prefetch filesystem metadata to speed up fsck.
44 dbg_printf("readahead start=%llu len=%llu err=%d\n", in readahead_dir_block()
120 /* Try not to spew bitmap range errors for readahead */
163 err = ext2fs_allocate_block_bitmap(fs, "readahead bitmap", in e2fsck_readahead()
242 * The optimal readahead sizes were experimentally determined by in e2fsck_guess_readahead()
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| H A D | recovery.c | 45 /* Release readahead buffers after use */
55 * layer directly and so there is no readahead being done for us. We
56 * need to implement any readahead ourselves if we want it to happen at
61 * the readahead size, though. 128K is a purely arbitrary, good-enough
75 /* Do up to 128K of readahead */ in do_readahead()
80 /* Do the readahead itself. We'll submit MAXBUF buffer_heads at in do_readahead()
155 /* If this is a brand new buffer, start readahead. in jread()
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| /aosp_15_r20/external/bcc/tools/ |
| H A D | readahead_example.txt | 1 Demonstration of readahead, the Linux eBPF/bcc version
17 readahead may pin the issue much faster in this case as the developer digs deeper
22 # readahead -d 30
44 while most of the pages stayed in the readahead cache for quite less time, after 30
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| /aosp_15_r20/external/e2fsprogs/debugfs/ |
| H A D | recovery.c | 45 /* Release readahead buffers after use */
55 * layer directly and so there is no readahead being done for us. We
56 * need to implement any readahead ourselves if we want it to happen at
61 * the readahead size, though. 128K is a purely arbitrary, good-enough
75 /* Do up to 128K of readahead */ in do_readahead()
80 /* Do the readahead itself. We'll submit MAXBUF buffer_heads at in do_readahead()
155 /* If this is a brand new buffer, start readahead. in jread()
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| /aosp_15_r20/system/core/init/libprefetch/prefetch/src/ |
| H A D | replay.rs | 60 fn readahead( in readahead() function
66 debug!("readahead {:?}", record);
67 let _dbg = scoped_log(id, "readahead");
90 return Err(Error::Read { error: format!("readahead failed: {}", Errno::last_raw()) });
101 // TODO: Try readahead() syscall or async I/O
183 if let Err(e) = readahead(id, file, &record, buffer.try_into().unwrap()) { in worker_internal()
188 "readahead failed on file id: {} with: {}", in worker_internal()
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| /aosp_15_r20/prebuilts/runtime/mainline/runtime/sdk/linux_bionic/include/bionic/libc/include/ |
| H A D | fcntl.h | 216 * [readahead(2)](http://man7.org/linux/man-pages/man2/readahead.2.html)
217 * initiates readahead for the given file.
221 ssize_t readahead(int __fd, off64_t __offset, size_t __length);
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| /aosp_15_r20/bionic/libc/include/ |
| H A D | fcntl.h | 214 * [readahead(2)](https://man7.org/linux/man-pages/man2/readahead.2.html)
215 * initiates readahead for the given file.
219 ssize_t readahead(int __fd, off64_t __offset, size_t __length);
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| /aosp_15_r20/prebuilts/runtime/mainline/runtime/sdk/android/arm64/include/bionic/libc/include/ |
| H A D | fcntl.h | 216 * [readahead(2)](http://man7.org/linux/man-pages/man2/readahead.2.html)
217 * initiates readahead for the given file.
221 ssize_t readahead(int __fd, off64_t __offset, size_t __length);
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| /aosp_15_r20/prebuilts/runtime/mainline/runtime/sdk/android/arm/include/bionic/libc/include/ |
| H A D | fcntl.h | 216 * [readahead(2)](http://man7.org/linux/man-pages/man2/readahead.2.html)
217 * initiates readahead for the given file.
221 ssize_t readahead(int __fd, off64_t __offset, size_t __length);
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| /aosp_15_r20/prebuilts/runtime/mainline/runtime/sdk/android/x86/include/bionic/libc/include/ |
| H A D | fcntl.h | 216 * [readahead(2)](http://man7.org/linux/man-pages/man2/readahead.2.html)
217 * initiates readahead for the given file.
221 ssize_t readahead(int __fd, off64_t __offset, size_t __length);
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| /aosp_15_r20/prebuilts/runtime/mainline/runtime/sdk/android/riscv64/include/bionic/libc/include/ |
| H A D | fcntl.h | 214 * [readahead(2)](https://man7.org/linux/man-pages/man2/readahead.2.html)
215 * initiates readahead for the given file.
219 ssize_t readahead(int __fd, off64_t __offset, size_t __length);
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| /aosp_15_r20/prebuilts/runtime/mainline/runtime/sdk/android/x86_64/include/bionic/libc/include/ |
| H A D | fcntl.h | 216 * [readahead(2)](http://man7.org/linux/man-pages/man2/readahead.2.html)
217 * initiates readahead for the given file.
221 ssize_t readahead(int __fd, off64_t __offset, size_t __length);
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