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2025-05-21selftests/nolibc: always run nolibc header checkThomas Weißschuh
Prevent regressions of issues validates by the header check by always running it together with the nolibc selftests. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250424-nolibc-header-check-v1-3-011576b6ed6f@linutronix.de
2025-05-21tools/nolibc: include nolibc.h early from all header filesThomas Weißschuh
Inclusion of any nolibc header file should also bring all other headers. On the other hand it should also be possible to include any nolibc header files in any order. Currently this is implemented by including the catch-all nolibc.h after the headers own definitions. This is problematic if one nolibc header depends on another one. The first header has to include the other one before defining any symbols. That in turn will include the rest of nolibc while the current header has not defined anything yet. If any other part of nolibc depends on definitions from the current header, errors are encountered. This is already the case today. Effectively nolibc can only be included in the order of nolibc.h. Restructure the way "nolibc.h" is included. Move it to the beginning of the header files and before the include guards. Now any header will behave exactly like "nolibc.h" while the include guards prevent any duplicate definitions. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250424-nolibc-header-check-v1-2-011576b6ed6f@linutronix.de
2025-05-21tools/nolibc: add target to check header usabilityThomas Weißschuh
Each nolibc header should be valid for inclusion irrespective of any special ordering requirements. Add a new make target, based on the old kbuild "make header_check" target to validate this requirement. For now the check fails, but the following commits will fix the issues. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250424-nolibc-header-check-v1-1-011576b6ed6f@linutronix.de
2025-04-22tools/nolibc: implement width padding in printf()Thomas Weißschuh
printf can pad each argument to a certain width. Implement this for compatibility with the kselftest harness. Currently only padding with spaces is supported. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22selftests/nolibc: add test for snprintf() truncationThomas Weißschuh
Now that we have a proper snprintf() implementation, make sure truncation is handled properly. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22selftests/nolibc: rename vfprintf test suiteThomas Weißschuh
With the addition of snprintf() and its usage in nolibc-test, the name of the "vfprintf" test suite is not accurate anymore. Rename the suite to be more generic. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22selftests/nolibc: use snprintf() for printf testsThomas Weißschuh
With a proper snprintf() implementation in place, the ugly pipe usage is not necessary anymore. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: add snprintf() and friendsThomas Weißschuh
Add more of the printf() functions. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: allow limiting of printf destination sizeThomas Weißschuh
snprintf() allows limiting the output buffer, while still returning the number of all bytes that would have been written. Implement the limitation logic in preparation for snprintf(). Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: allow different write callbacks in printfThomas Weißschuh
Decouple the formatting logic from the writing logic to later enable writing straight to a buffer in sprintf(). Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: add getopt()Thomas Weißschuh
Introduce a getopt() implementation based on the one from musl. The only deviations are adaption to the kernel coding style and nolibc infrastructure and removal of multi-byte support. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: add dprintf() and vdprintf()Thomas Weißschuh
dprintf() and vdprintf() are printf() variants printing directly into a filedescriptor. As FILE in nolibc is based directly on filedescriptors, the implementation is trivial. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22Revert "selftests/nolibc: use waitid() over waitpid()"Thomas Weißschuh
nolibc's waitpid() now uses the waitid() syscall internally. This removes the original reasoning for the reverted commit as waitpid() is now available on all platforms and has an easier interface. Switch back to waitpid(). This reverts commit a0bc8947ac731ff95a56e0c1737e69e8c56d5b78. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: implement waitpid() in terms of waitid()Thomas Weißschuh
The old wait4() syscall used by waitpid() before is not available everywhere. Switch to the waitid() syscall which is the new replacement. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: add setpgrp()Thomas Weißschuh
setpgrp() is defined to be identical to setpgid(0, 0). Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: add _exit()Thomas Weißschuh
_exit() is the faster variant of exit(), skipping all cleanup actions. As nolibc does not perform any cleanup anyways, the implementation is trivial. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: add tolower() and toupper()Thomas Weißschuh
The kselftest harness uses these functions. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: use ppoll_time64 if availableThomas Weißschuh
riscv32 does not have any of the older poll systemcalls. Use ppoll_time64 instead. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: use pselect6_time64 if availableThomas Weißschuh
riscv32 does not have any of the older select systemcalls. Use pselect6_time64 instead. poll() is also used to implement sleep(). Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: use intmax definitions from compilerThomas Weißschuh
The printf format checking in the compiler uses the intmax types from the compiler, not libc. This can lead to compiler errors. Instead use the types already provided by the compiler. Example issue with clang 19 for arm64: nolibc-test.c:30:2: error: format specifies type 'uintmax_t' (aka 'unsigned long') but the argument has type 'uintmax_t' (aka 'unsigned long long') [-Werror,-Wformat] Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-22tools/nolibc: handle intmax_t/uintmax_t in printfThomas Weißschuh
In nolibc intmax_t and uintmax_t are always the same as (unsigned) long long/uint64_t as 128bit numbers are not supported. Even libcs that do support 128bit numbers often fix intmax_t to 64bit as it is used in ABIs and any change would break those. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu>
2025-04-19tools/nolibc: move wait() and friends to sys/wait.hThomas Weißschuh
This is the location regular userspace expects these definitions. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-10-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: add sys/types.h shimThomas Weißschuh
This is the location regular userspace expects the header. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-9-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: move gettimeofday() to sys/time.hThomas Weißschuh
This is the location regular userspace expects this definition. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-8-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: move syscall() to sys/syscall.hThomas Weißschuh
This is the location regular userspace expects the definition. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-7-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: move stat() and friends to sys/stat.hThomas Weißschuh
This is the location regular userspace expects these definitions. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-6-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: move mmap() and friends to sys/mman.hThomas Weißschuh
This is the location regular userspace expects these definitions. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-5-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: move getauxval() to sys/auxv.hThomas Weißschuh
This is the location regular userspace expects the definition. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-4-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: move open() and friends to fcntl.hThomas Weißschuh
This is the location regular userspace expects these definitions. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-3-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: add elf.hThomas Weißschuh
The UAPI header do already provide an elf.h implementation. Reexport it under its libc name. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-2-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19tools/nolibc: prepare for headers in subdirectoriesThomas Weißschuh
To support headers in subdirectories (like sys/), their subdirectory needs to be preserved during installation into the sysroot. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250416-nolibc-split-sys-v1-1-a069a3f1d145@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-19selftests/nolibc: enable UBSAN if availableThomas Weißschuh
UBSAN detects undefined behaviour at runtime. To avoid introduction of new UB, enable UBSAN for nolibc-test. By signalling detected errors through traps no runtime dependency is necessary. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-7-060b8a016917@weissschuh.net
2025-04-19selftests/nolibc: disable ubsan for smash_stack()Thomas Weißschuh
smash_stack() intentionally crashes. Prevent UBSAN from tripping over it. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-6-060b8a016917@weissschuh.net
2025-04-19tools/nolibc: fix integer overflow in i{64,}toa_r() andThomas Weißschuh
In twos complement the most negative number can not be negated. Fixes: b1c21e7d99cd ("tools/nolibc/stdlib: add i64toa() and u64toa()") Fixes: 66c397c4d2e1 ("tools/nolibc/stdlib: replace the ltoa() function with more efficient ones") Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-5-060b8a016917@weissschuh.net
2025-04-19tools/nolibc: properly align dirent bufferThomas Weißschuh
As byte buffer is overlaid with a 'struct dirent64'. it has to satisfy the structs alignment requirements. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Fixes: 665fa8dea90d ("tools/nolibc: add support for directory access") Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-4-060b8a016917@weissschuh.net
2025-04-19tools/nolibc: disable function sanitizer for _start_c()Thomas Weißschuh
Both constructors and main() may be executed with different function signatures than they are actually using. This is intentional but trips up UBSAN. Disable the function sanitizer of UBSAN in _start_c(). Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-3-060b8a016917@weissschuh.net
2025-04-19tools/nolibc: add __nolibc_aligned() and __nolibc_aligned_as()Thomas Weißschuh
Provide a convenience macro around __attribute__((aligned)). Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-2-060b8a016917@weissschuh.net
2025-04-19tools/nolibc: add __nolibc_has_feature()Thomas Weißschuh
Certain compiler features are signaled via the __has_feature() preprocessor builtin. Add a nolibc wrapper for it, similar to __nolibc_has_attribute(). Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250419-nolibc-ubsan-v2-1-060b8a016917@weissschuh.net
2025-04-14tools/nolibc: drop manual stack pointer alignmentThomas Weißschuh
The stack pointer is already aligned by the kernel to a multiple of 16. See STACK_ROUND() in fs/binfmt_elf.c. The manual realignment is unnecessary, drop it. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250316-nolibc-sp-align-v1-1-1e1fb073ca1e@weissschuh.net
2025-04-11tools/nolibc: Add support for SPARCThomas Weißschuh
Add support for 32bit and 64bit SPARC to nolibc. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Tested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> # UltraSparc T4 (Niagara4) Link: https://lore.kernel.org/lkml/20250322-nolibc-sparc-v2-1-89af018c6296@weissschuh.net/
2025-04-11selftests/nolibc: only consider XARCH for CFLAGS when requestedThomas Weißschuh
If no explicit XARCH is specified, use the toolchains default. Suggested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Link: https://lore.kernel.org/lkml/20250326205434.bPx_kVUx@breakpoint.cc/ Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250402-nolibc-nolibc-test-native-v1-2-62f2f8585220@weissschuh.net
2025-04-11selftests/nolibc: drop dependency from sysroot to defconfigThomas Weißschuh
The creation of the sysroot does not require a kernel configuration. Drop the dependency. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250402-nolibc-nolibc-test-native-v1-1-62f2f8585220@weissschuh.net
2025-04-11tools/nolibc/types.h: fix mismatched parenthesis in minor()Jemmy Wong
Fix an imbalance where opening parentheses exceed closing ones. Fixes: eba6d00d38e7c ("tools/nolibc/types: move makedev to types.h and make it a macro") Signed-off-by: Jemmy Wong <jemmywong512@gmail.com> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250411073624.22153-1-jemmywong512@gmail.com Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-04-10selftests/nolibc: drop unnecessary sys/io.h includeThomas Weißschuh
The include of sys/io.h is not necessary anymore since commit 67eb617a8e1e ("selftests/nolibc: simplify call to ioperm"). It's existence is also problematic as the header does not exist on all architectures. Reported-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250324-nolibc-ioperm-v1-1-8a7cfb2876ae@weissschuh.net
2025-04-06Linux 6.15-rc1Linus Torvalds
2025-04-06tools/include: make uapi/linux/types.h usable from assemblyThomas Weißschuh
The "real" linux/types.h UAPI header gracefully degrades to a NOOP when included from assembly code. Mirror this behaviour in the tools/ variant. Test for __ASSEMBLER__ over __ASSEMBLY__ as the former is provided by the toolchain automatically. Reported-by: Mark Brown <broonie@kernel.org> Closes: https://lore.kernel.org/lkml/af553c62-ca2f-4956-932c-dd6e3a126f58@sirena.org.uk/ Fixes: c9fbaa879508 ("selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers") Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://patch.msgid.link/20250321-uapi-consistency-v1-1-439070118dc0@linutronix.de Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-04-06Merge tag 'turbostat-2025.05.06' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux Pull turbostat updates from Len Brown: - support up to 8192 processors - add cpuidle governor debug telemetry, disabled by default - update default output to exclude cpuidle invocation counts - bug fixes * tag 'turbostat-2025.05.06' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: v2025.05.06 tools/power turbostat: disable "cpuidle" invocation counters, by default tools/power turbostat: re-factor sysfs code tools/power turbostat: Restore GFX sysfs fflush() call tools/power turbostat: Document GNR UncMHz domain convention tools/power turbostat: report CoreThr per measurement interval tools/power turbostat: Increase CPU_SUBSET_MAXCPUS to 8192 tools/power turbostat: Add idle governor statistics reporting tools/power turbostat: Fix names matching tools/power turbostat: Allow Zero return value for some RAPL registers tools/power turbostat: Clustered Uncore MHz counters should honor show/hide options
2025-04-06Merge tag 'soundwire-6.15-rc1-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire Pull soundwire fix from Vinod Koul: - add missing config symbol CONFIG_SND_HDA_EXT_CORE required for asoc driver CONFIG_SND_SOF_SOF_HDA_SDW_BPT * tag 'soundwire-6.15-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: ASoC: SOF: Intel: Let SND_SOF_SOF_HDA_SDW_BPT select SND_HDA_EXT_CORE
2025-04-06tools/power turbostat: v2025.05.06Len Brown
Support up to 8192 processors Add cpuidle governor debug telemetry, disabled by default Update default output to exclude cpuidle invocation counts Bug fixes Signed-off-by: Len Brown <len.brown@intel.com>
2025-04-06tools/power turbostat: disable "cpuidle" invocation counters, by defaultLen Brown
Create "pct_idle" counter group, the sofware notion of residency so it can now be singled out, independent of other counter groups. Create "cpuidle" group, the cpuidle invocation counts. Disable "cpuidle", by default. Create "swidle" = "cpuidle" + "pct_idle". Undocument "sysfs", the old name for "swidle", but keep it working for backwards compatibilty. Create "hwidle", all the HW idle counters Modify "idle", enabled by default "idle" = "hwidle" + "pct_idle" (and now excludes "cpuidle") Signed-off-by: Len Brown <len.brown@intel.com>
generated by cgit (git 2.34.1) at 2025-09-09 23:22:47 +0000