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2023-08-23selftests/nolibc: link_cross: use /proc/self/cmdlineZhangjin Wu1-1/+1
For CONFIG_NET=n, there would be no /proc/self/net, so, use /proc/self/cmdline instead. Reviewed-by: Thomas Weißschuh <[email protected]> Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: fix up kernel parameters supportZhangjin Wu1-2/+31
kernel parameters allow pass two types of strings, one type is like 'noapic', another type is like 'panic=5', the first type is passed as arguments of the init program, the second type is passed as environment variables of the init program. when users pass kernel parameters like this: noapic NOLIBC_TEST=syscall our nolibc-test program will use the test setting from argv[1] and ignore the one from NOLIBC_TEST environment variable, and at last, it will print the following line and ignore the whole test setting. Ignoring unknown test name 'noapic' reversing the parsing order does solve the above issue: test = getenv("NOLIBC_TEST"); if (test) test = argv[1]; but it still doesn't work with such kernel parameters (without NOLIBC_TEST environment variable): noapic FOO=bar To support all of the potential kernel parameters, let's verify the test setting from both of argv[1] and NOLIBC_TEST environment variable. Reviewed-by: Thomas Weißschuh <[email protected]> Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: prefer <sys/reboot.h> to <linux/reboot.h>Zhangjin Wu1-2/+1
Since both glibc and musl provide RB_ flags via <sys/reboot.h>, and we just add RB_ flags for nolibc, let's use RB_ flags instead of LINUX_REBOOT_ flags and only reserve the required <sys/reboot.h> header. This allows compile libc-test for musl libc without the linux headers. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: types.h: add RB_ flags for reboot()Zhangjin Wu2-2/+11
Both glibc and musl provide RB_ flags via <sys/reboot.h> for reboot(), they don't need to include <linux/reboot.h>, let nolibc provide RB_ flags too. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: fix up int_fast16/32_t test cases for muslZhangjin Wu1-4/+8
musl limits the fast signed int in 32bit, but glibc and nolibc don't, to let such test cases work on musl, let's provide the type based SINT_MAX_OF_TYPE(type) and SINT_MIN_OF_TYPE(type). Suggested-by: Thomas Weißschuh <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Reviewed-by: Thomas Weißschuh <[email protected]> Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: add _LARGEFILE64_SOURCE for muslZhangjin Wu1-0/+1
_GNU_SOURCE Implies _LARGEFILE64_SOURCE in glibc, but in musl, the default configuration doesn't enable _LARGEFILE64_SOURCE. >From include/dirent.h of musl, getdents64 is provided as getdents when _LARGEFILE64_SOURCE is defined. #if defined(_LARGEFILE64_SOURCE) ... #define getdents64 getdents #endif Let's define _LARGEFILE64_SOURCE to fix up this compile error: tools/testing/selftests/nolibc/nolibc-test.c: In function ‘test_getdents64’: tools/testing/selftests/nolibc/nolibc-test.c:453:8: warning: implicit declaration of function ‘getdents64’; did you mean ‘getdents’? [-Wimplicit-function-declaration] 453 | ret = getdents64(fd, (void *)buffer, sizeof(buffer)); | ^~~~~~~~~~ | getdents /usr/bin/ld: /tmp/ccKILm5u.o: in function `test_getdents64': nolibc-test.c:(.text+0xe3e): undefined reference to `getdents64' collect2: error: ld returned 1 exit status Reviewed-by: Thomas Weißschuh <[email protected]> Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: gettid: restore for glibc and muslZhangjin Wu1-3/+7
As the gettid manpage [1] shows, glibc 2.30 has gettid support, so, let's enable the test for glibc >= 2.30. gettid works on musl too. [1]: https://man7.org/linux/man-pages/man2/gettid.2.html Reviewed-by: Thomas Weißschuh <[email protected]> Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: stat_fault: silence NULL argument warning with glibcZhangjin Wu1-1/+1
Use another invalid address (void *)1 instead of NULL to silence this compile warning with glibc: $ make libc-test CC libc-test nolibc-test.c: In function ‘run_syscall’: nolibc-test.c:622:49: warning: null argument where non-null required (argument 1) [-Wnonnull] 622 | CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; | ^~~~ nolibc-test.c:304:79: note: in definition of macro ‘EXPECT_SYSER2’ 304 | do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) | ^~~~ nolibc-test.c:622:33: note: in expansion of macro ‘EXPECT_SYSER’ 622 | CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; Reviewed-by: Thomas Weißschuh <[email protected]> Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: add run-libc-test targetZhangjin Wu1-0/+4
allow run and report glibc or musl based libc-test. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: add mmap_munmap_good test caseZhangjin Wu1-0/+60
mmap() a file with a good offset and then munmap() it. a non-zero offset is passed to test the 6th argument of my_syscall6(). Note, it is not easy to find a unique file for mmap() in different scenes, so, a file list is used to search the right one: - /dev/zero: is commonly used to allocate anonymous memory and is likely present and readable - /proc/1/exe: for 'run' and 'run-user' target, 'run-user' can not find '/proc/self/exe' - /proc/self/exe: for 'libc-test' target, normal program 'libc-test' has no permission to access '/proc/1/exe' - argv0: the path of the program itself, let it pass even with worst case scene: no procfs and no /dev/zero Suggested-by: Willy Tarreau <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Suggested-by: Thomas Weißschuh <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: add munmap_bad test caseZhangjin Wu1-0/+1
The addr argument of munmap() must be a multiple of the page size, passing invalid (void *)1 addr expects failure with -EINVAL. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: add mmap_bad test caseZhangjin Wu1-0/+1
The length argument of mmap() must be greater than 0, passing a zero length argument expects failure with -EINVAL. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: add sbrk_0 to test current brk gettingZhangjin Wu1-0/+1
>From musl 0.9.14 (to the latest version 1.2.3), both sbrk() and brk() have almost been disabled for they conflict with malloc, only sbrk(0) is still permitted as a way to get the current location of the program break, let's support such case. EXPECT_PTRNE() is used to expect sbrk() always successfully getting the current break. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: add EXPECT_PTREQ, EXPECT_PTRNE and EXPECT_PTRERZhangjin Wu1-0/+58
The syscalls like sbrk() and mmap() return pointers, to test them, more pointer compare test macros are required, add them: - EXPECT_PTREQ() expects two equal pointers. - EXPECT_PTRNE() expects two non-equal pointers. - EXPECT_PTRER() expects failure with a specified errno. - EXPECT_PTRER2() expects failure with one of two specified errnos. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: prepare: create /dev/zeroZhangjin Wu1-1/+3
/dev/zero is commonly used to allocate anonymous memory, it is a very good file for tests, let's prepare it. Suggested-by: Willy Tarreau <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: export argv0 for some testsZhangjin Wu1-0/+4
argv0 is the path to nolibc-test program itself, which is a very good always existing readable file for some tests, let's export it. Note, the path may be absolute or relative, please make sure the tests work with both of them. If it is relative, we must make sure the current path is the one specified by the PWD environment variable. Suggested-by: Willy Tarreau <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: clean up sbrk() routineZhangjin Wu1-5/+4
Fix up the error reported by scripts/checkpatch.pl: ERROR: do not use assignment in if condition #95: FILE: tools/include/nolibc/sys.h:95: + if ((ret = sys_brk(0)) && (sys_brk(ret + inc) == ret + inc)) Apply the new generic __sysret() to merge the SET_ERRNO() and return lines. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: clean up mmap() routineZhangjin Wu2-23/+12
Do several cleanups together: - Since all supported architectures have my_syscall6() now, remove the #ifdef check. - Move the mmap() related macros to tools/include/nolibc/types.h and reuse most of them from <linux/mman.h> - Apply the new generic __sysret() to convert the calling of sys_map() to oneline code Note, since MAP_FAILED is -1 on Linux, so we can use the generic __sysret() which returns -1 upon error and still satisfy user land that checks for MAP_FAILED. Suggested-by: Willy Tarreau <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: __sysret: support syscalls who return a pointerZhangjin Wu1-5/+12
No official reference states the errno range, here aligns with musl and glibc and uses [-MAX_ERRNO, -1] instead of all negative ones. - musl: src/internal/syscall_ret.c - glibc: sysdeps/unix/sysv/linux/sysdep.h The MAX_ERRNO used by musl and glibc is 4095, just like the one nolibc defined in tools/include/nolibc/errno.h. Suggested-by: Willy Tarreau <[email protected]> Link: https://lore.kernel.org/lkml/ZKKdD%[email protected]/ Suggested-by: David Laight <[email protected]> Link: https://lore.kernel.org/linux-riscv/[email protected]/ Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: add missing my_syscall6() for mipsZhangjin Wu2-6/+30
It is able to pass the 6th argument like the 5th argument via the stack for mips, let's add a new my_syscall6() now, see [1] for details: The mips/o32 system call convention passes arguments 5 through 8 on the user stack. Both mmap() and pselect6() require my_syscall6(). [1]: https://man7.org/linux/man-pages/man2/syscall.2.html Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: arch-mips.h: shrink with _NOLIBC_SYSCALL_CLOBBERLISTZhangjin Wu1-12/+10
my_syscall<N> share the same long clobber list, define a macro for them. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: arch-loongarch.h: shrink with _NOLIBC_SYSCALL_CLOBBERLISTZhangjin Wu1-14/+9
my_syscall<N> share the same long clobber list, define a macro for them. Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23toolc/nolibc: arch-*.h: clean up whitespaces after __asm__Zhangjin Wu8-54/+54
replace "__asm__ volatile" with "__asm__ volatile" and insert necessary whitespace before "\" to make sure the lines are aligned. $ sed -i -e 's/__asm__ volatile ( /__asm__ volatile ( /g' tools/include/nolibc/*.h Note, arch-s390.h uses post-tab instead of post-whitespaces, must avoid insert whitespace just before the tabs: $ sed -i -e 's/__asm__ volatile (\t/__asm__ volatile (\t/g' tools/include/nolibc/arch-*.h Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23tools/nolibc: arch-*.h: fix up code indent errorsZhangjin Wu5-39/+39
More than 8 whitespaces of the code indent are replaced with "tab + whitespaces" to fix up such errors reported by scripts/checkpatch.pl: ERROR: code indent should use tabs where possible #64: FILE: tools/include/nolibc/arch-mips.h:64: +^I \$ ERROR: code indent should use tabs where possible #72: FILE: tools/include/nolibc/arch-mips.h:72: +^I "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9" \$ This command is used: $ sed -i -e '/^\t* /{s/ /\t/g}' tools/include/nolibc/arch-*.h Signed-off-by: Zhangjin Wu <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/nolibc: simplify call to iopermThomas Weißschuh1-5/+1
Since commit 53fcfafa8c5c ("tools/nolibc/unistd: add syscall()") nolibc has support for syscall(2). Use it to get rid of some ifdef-ery. Signed-off-by: Thomas Weißschuh <[email protected]> Signed-off-by: Willy Tarreau <[email protected]>
2023-08-23selftests/ftrace: Add BTF fields access testcasesMasami Hiramatsu (Google)2-0/+28
Add test cases for accessing the data structure fields using BTF info. This includes the field access from parameters and retval, and accessing string information. Link: https://lore.kernel.org/all/169272161265.160970.14048619786574971276.stgit@devnote2/ Signed-off-by: Masami Hiramatsu (Google) <[email protected]> Reviewed-by: Alan Maguire <[email protected]> Acked-by: Steven Rostedt (Google) <[email protected]>
2023-08-23tracing/fprobe-event: Assume fprobe is a return event by $retvalMasami Hiramatsu (Google)1-1/+1
Assume the fprobe event is a return event if there is $retval is used in the probe's argument without %return. e.g. echo 'f:myevent vfs_read $retval' >> dynamic_events then 'myevent' is a return probe event. Link: https://lore.kernel.org/all/169272160261.160970.13613040161560998787.stgit@devnote2/ Suggested-by: Steven Rostedt <[email protected]> Signed-off-by: Masami Hiramatsu (Google) <[email protected]> Acked-by: Steven Rostedt (Google) <[email protected]>
2023-08-22libbpf: Free btf_vmlinux when closing bpf_objectHao Luo1-0/+1
I hit a memory leak when testing bpf_program__set_attach_target(). Basically, set_attach_target() may allocate btf_vmlinux, for example, when setting attach target for bpf_iter programs. But btf_vmlinux is freed only in bpf_object_load(), which means if we only open bpf object but not load it, setting attach target may leak btf_vmlinux. So let's free btf_vmlinux in bpf_object__close() anyway. Signed-off-by: Hao Luo <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2023-08-22perf lzma: Convert some pr_err() to pr_debug() as callers already use pr_debug()Arnaldo Carvalho de Melo1-7/+5
I noticed some error with: # perf list ex_ret_brn lzma: fopen failed on /usr/lib/modules/5.15.14-100.fc34.x86_64/kernel/net/bluetooth/bnep/bnep.ko.xz: 'No such file or directory' lzma: fopen failed on /usr/lib/modules/5.16.16-200.fc35.x86_64/kernel/drivers/gpu/drm/drm_kms_helper.ko.xz: 'No such file or directory' lzma: fopen failed on /usr/lib/modules/5.18.16-200.fc36.x86_64/kernel/arch/x86/crypto/crct10dif-pclmul.ko.xz: 'No such file or directory' lzma: fopen failed on /usr/lib/modules/5.16.16-200.fc35.x86_64/kernel/drivers/i2c/busses/i2c-piix4.ko.xz: 'No such file or directory' <BIG SNIP> Then using 'perf probe' + 'perf trace' to debug 'perf list', it seems its some inconsistency in the ~/.debug/ cache where broken build id symlinks that ends up making it try to uncompress some kernel modules using the lzma routines: 395.309 perf/3594447 probe_perf:lzma_decompress_to_file(__probe_ip: 6118448, input_string: "/usr/lib/modules/5.18.17-200.fc36.x86_64/kernel/drivers/nvme/host/nvme.ko.xz") lzma_decompress_to_file (/var/home/acme/bin/perf) filename__decompress (/var/home/acme/bin/perf) filename__read_build_id (/var/home/acme/bin/perf) filename__sprintf_build_id (inlined) build_id_cache__valid_id (inlined) build_id_cache__list_all (/var/home/acme/bin/perf) print_sdt_events (/var/home/acme/bin/perf) cmd_list (/var/home/acme/bin/perf) run_builtin (/var/home/acme/bin/perf) handle_internal_command (inlined) run_argv (inlined) main (/var/home/acme/bin/perf) __libc_start_call_main (/usr/lib64/libc.so.6) __libc_start_main@@GLIBC_2.34 (/usr/lib64/libc.so.6) _start (/var/home/acme/bin/perf) But callers of filename__decompress() already check its return and use pr_debug(), so be consistent and make functions it calls also use pr_debug(). Cc: Adrian Hunter <[email protected]> Cc: Ian Rogers <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Link: https://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2023-08-22selftests/bpf: Add test for bpf_obj_drop with bad reg->offKumar Kartikeya Dwivedi1-0/+20
Add a selftest for the fix provided in the previous commit. Without the fix, the selftest passes the verifier while it should fail. The special logic for detecting graph root or node for reg->off and bypassing reg->off == 0 guarantee for release helpers/kfuncs has been dropped. Signed-off-by: Kumar Kartikeya Dwivedi <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-22selftests/bpf: Add a failure test for bpf_kptr_xchg() with local kptrYonghong Song2-1/+74
For a bpf_kptr_xchg() with local kptr, if the map value kptr type and allocated local obj type does not match, with the previous patch, the below verifier error message will be logged: R2 is of type <allocated local obj type> but <map value kptr type> is expected Without the previous patch, the test will have unexpected success. Signed-off-by: Yonghong Song <[email protected]> Acked-by: Kumar Kartikeya Dwivedi <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-22Add cs42l43 PC focused SoundWire CODECMark Brown42-104/+379
Merge series from Charles Keepax <[email protected]>: This patch chain adds support for the Cirrus Logic cs42l43 PC focused SoundWire CODEC. The chain is currently based of Lee's for-mfd-next branch. This series is mostly just a resend keeping pace with the kernel under it, except for a minor fixup in the ASoC stuff. Thanks, Charles Charles Keepax (4): dt-bindings: mfd: cirrus,cs42l43: Add initial DT binding mfd: cs42l43: Add support for cs42l43 core driver pinctrl: cs42l43: Add support for the cs42l43 ASoC: cs42l43: Add support for the cs42l43 Lucas Tanure (2): soundwire: bus: Allow SoundWire peripherals to register IRQ handlers spi: cs42l43: Add SPI controller support .../bindings/sound/cirrus,cs42l43.yaml | 313 +++ MAINTAINERS | 4 + drivers/mfd/Kconfig | 23 + drivers/mfd/Makefile | 3 + drivers/mfd/cs42l43-i2c.c | 98 + drivers/mfd/cs42l43-sdw.c | 239 ++ drivers/mfd/cs42l43.c | 1188 +++++++++ drivers/mfd/cs42l43.h | 28 + drivers/pinctrl/cirrus/Kconfig | 11 + drivers/pinctrl/cirrus/Makefile | 2 + drivers/pinctrl/cirrus/pinctrl-cs42l43.c | 609 +++++ drivers/soundwire/bus.c | 32 + drivers/soundwire/bus_type.c | 12 + drivers/spi/Kconfig | 7 + drivers/spi/Makefile | 1 + drivers/spi/spi-cs42l43.c | 284 ++ include/linux/mfd/cs42l43-regs.h | 1184 +++++++++ include/linux/mfd/cs42l43.h | 102 + include/linux/soundwire/sdw.h | 9 + include/sound/cs42l43.h | 17 + sound/soc/codecs/Kconfig | 16 + sound/soc/codecs/Makefile | 4 + sound/soc/codecs/cs42l43-jack.c | 946 +++++++ sound/soc/codecs/cs42l43-sdw.c | 74 + sound/soc/codecs/cs42l43.c | 2278 +++++++++++++++++ sound/soc/codecs/cs42l43.h | 131 + 26 files changed, 7615 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml create mode 100644 drivers/mfd/cs42l43-i2c.c create mode 100644 drivers/mfd/cs42l43-sdw.c create mode 100644 drivers/mfd/cs42l43.c create mode 100644 drivers/mfd/cs42l43.h create mode 100644 drivers/pinctrl/cirrus/pinctrl-cs42l43.c create mode 100644 drivers/spi/spi-cs42l43.c create mode 100644 include/linux/mfd/cs42l43-regs.h create mode 100644 include/linux/mfd/cs42l43.h create mode 100644 include/sound/cs42l43.h create mode 100644 sound/soc/codecs/cs42l43-jack.c create mode 100644 sound/soc/codecs/cs42l43-sdw.c create mode 100644 sound/soc/codecs/cs42l43.c create mode 100644 sound/soc/codecs/cs42l43.h -- 2.30.2
2023-08-21selftests: bonding: do not set port down before adding to bondHangbin Liu1-2/+2
Before adding a port to bond, it need to be set down first. In the lacpdu test the author set the port down specifically. But commit a4abfa627c38 ("net: rtnetlink: Enslave device before bringing it up") changed the operation order, the kernel will set the port down _after_ adding to bond. So all the ports will be down at last and the test failed. In fact, the veth interfaces are already inactive when added. This means there's no need to set them down again before adding to the bond. Let's just remove the link down operation. Fixes: a4abfa627c38 ("net: rtnetlink: Enslave device before bringing it up") Reported-by: Zhengchao Shao <[email protected]> Closes: https://lore.kernel.org/netdev/[email protected]/ Signed-off-by: Hangbin Liu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2023-08-21selftests/bpf: Add extra link to uprobe_multi testsJiri Olsa2-0/+22
Attaching extra program to same functions system wide for api and link tests. This way we can test the pid filter works properly when there's extra system wide consumer on the same uprobe that will trigger the original uprobe handler. We expect to have the same counts as before. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi pid filter testsJiri Olsa2-12/+126
Running api and link tests also with pid filter and checking the probe gets executed only for specific pid. Spawning extra process to trigger attached uprobes and checking we get correct counts from executed programs. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi cookie testJiri Olsa1-0/+78
Adding test for cookies setup/retrieval in uprobe_link uprobes and making sure bpf_get_attach_cookie works properly. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi usdt bench testJiri Olsa2-0/+55
Adding test that attaches 50k usdt probes in usdt_multi binary. After the attach is done we run the binary and make sure we get proper amount of hits. With current uprobes: # perf stat --null ./test_progs -n 254/6 #254/6 uprobe_multi_test/bench_usdt:OK #254 uprobe_multi_test:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Performance counter stats for './test_progs -n 254/6': 1353.659680562 seconds time elapsed With uprobe_multi link: # perf stat --null ./test_progs -n 254/6 #254/6 uprobe_multi_test/bench_usdt:OK #254 uprobe_multi_test:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Performance counter stats for './test_progs -n 254/6': 0.322046364 seconds time elapsed Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi usdt test codeJiri Olsa1-1/+25
Adding code in uprobe_multi test binary that defines 50k usdts and will serve as attach point for uprobe_multi usdt bench test in following patch. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi bench testJiri Olsa2-0/+55
Adding test that attaches 50k uprobes in uprobe_multi binary. After the attach is done we run the binary and make sure we get proper amount of hits. The resulting attach/detach times on my setup: test_bench_attach_uprobe:PASS:uprobe_multi__open 0 nsec test_bench_attach_uprobe:PASS:uprobe_multi__attach 0 nsec test_bench_attach_uprobe:PASS:uprobes_count 0 nsec test_bench_attach_uprobe: attached in 0.346s test_bench_attach_uprobe: detached in 0.419s #262/5 uprobe_multi_test/bench_uprobe:OK Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi test programJiri Olsa2-0/+72
Adding uprobe_multi test program that defines 50k uprobe_multi_func_* functions and will serve as attach point for uprobe_multi bench test in following patch. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi link testJiri Olsa1-0/+69
Adding uprobe_multi test for bpf_link_create attach function. Testing attachment using the struct bpf_link_create_opts. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi api testJiri Olsa1-0/+65
Adding uprobe_multi test for bpf_program__attach_uprobe_multi attach function. Testing attachment using glob patterns and via bpf_uprobe_multi_opts paths/syms fields. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Add uprobe_multi skel testJiri Olsa2-0/+167
Adding uprobe_multi test for skeleton load/attach functions, to test skeleton auto attach for uprobe_multi link. Test that bpf_get_func_ip works properly for uprobe_multi attachment. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21selftests/bpf: Move get_time_ns to testing_helpers.hJiri Olsa3-17/+10
We'd like to have single copy of get_time_ns used b bench and test_progs, but we can't just include bench.h, because of conflicting 'struct env' objects. Moving get_time_ns to testing_helpers.h which is being included by both bench and test_progs objects. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21libbpf: Add uprobe multi link support to bpf_program__attach_usdtJiri Olsa2-17/+82
Adding support for usdt_manager_attach_usdt to use uprobe_multi link to attach to usdt probes. The uprobe_multi support is detected before the usdt program is loaded and its expected_attach_type is set accordingly. If uprobe_multi support is detected the usdt_manager_attach_usdt gathers uprobes info and calls bpf_program__attach_uprobe to create all needed uprobes. If uprobe_multi support is not detected the old behaviour stays. Also adding usdt.s program section for sleepable usdt probes. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21libbpf: Add uprobe multi link detectionJiri Olsa2-0/+38
Adding uprobe-multi link detection. It will be used later in bpf_program__attach_usdt function to check and use uprobe_multi link over standard uprobe links. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21libbpf: Add support for u[ret]probe.multi[.s] program sectionsJiri Olsa1-0/+36
Adding support for several uprobe_multi program sections to allow auto attach of multi_uprobe programs. Acked-by: Andrii Nakryiko <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21libbpf: Add bpf_program__attach_uprobe_multi functionJiri Olsa3-0/+166
Adding bpf_program__attach_uprobe_multi function that allows to attach multiple uprobes with uprobe_multi link. The user can specify uprobes with direct arguments: binary_path/func_pattern/pid or with struct bpf_uprobe_multi_opts opts argument fields: const char **syms; const unsigned long *offsets; const unsigned long *ref_ctr_offsets; const __u64 *cookies; User can specify 2 mutually exclusive set of inputs: 1) use only path/func_pattern/pid arguments 2) use path/pid with allowed combinations of: syms/offsets/ref_ctr_offsets/cookies/cnt - syms and offsets are mutually exclusive - ref_ctr_offsets and cookies are optional Any other usage results in error. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21libbpf: Add bpf_link_create support for multi uprobesJiri Olsa2-1/+21
Adding new uprobe_multi struct to bpf_link_create_opts object to pass multiple uprobe data to link_create attr uapi. Acked-by: Andrii Nakryiko <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2023-08-21libbpf: Add elf_resolve_pattern_offsets functionJiri Olsa3-1/+67
Adding elf_resolve_pattern_offsets function that looks up offsets for symbols specified by pattern argument. The 'pattern' argument allows wildcards (*?' supported). Offsets are returned in allocated array together with its size and needs to be released by the caller. Signed-off-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
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