* [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings
@ 2022-10-20 13:14 Ammar Faizi
2022-10-20 13:14 ` [PATCH liburing v2 1/3] liburing: Clean up `-Wshorten-64-to-32` warnings from clang Ammar Faizi
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Ammar Faizi @ 2022-10-20 13:14 UTC (permalink / raw)
To: Jens Axboe
Cc: Dylan Yudaken, Ammar Faizi, Pavel Begunkov,
GNU/Weeb Mailing List, io-uring Mailing List,
Facebook Kernel Team
From: Ammar Faizi <[email protected]>
Hi Jens,
This is a v2.
v2:
- Fix Signed-off-by tag.
- Make the cast in patch #1 consistent.
Please consider this small cleanup series before the release.
This series is a follow up of the clean up `-Wshorten-64-to-32`
warnings that I discussed with Dylan previously. It only addresses
the warnings in the src/ dir (main library). We ignore the tests
for now.
`-Wshorten-64-to-32` is a clang-specific flag, it currently doesn't
exist in GCC.
There are 3 patches in this series:
- Patch 1 is to clean up the warnings in the main library
(this is based on a patch from Dylan).
Taken from: https://github.com/DylanZA/liburing/commit/cdd6dfbb9019.patch
- Patch 2 is to introduce LIBURING_CFLAGS variable in the Makefile. We
need this varaible to apply specific compiler flags to the main
library only. Currently, this flag is only used by the GitHub bot.
- Patch 3 is to integrate `-Wshorten-64-to-32` flag to the GitHub bot.
Signed-off-by: Ammar Faizi <[email protected]>
---
Ammar Faizi (2):
Makefile: Introduce `LIBURING_CFLAGS` variable
github: Append `-Wshorten-64-to-32` flag for clang build
Dylan Yudaken (1):
liburing: Clean up `-Wshorten-64-to-32` warnings from clang
.github/workflows/build.yml | 4 ++++
src/Makefile | 5 ++++-
src/arch/syscall-defs.h | 4 ++--
src/register.c | 5 ++++-
src/setup.c | 12 ++++++------
src/syscall.h | 4 ++--
6 files changed, 22 insertions(+), 12 deletions(-)
base-commit: 3049530665ba6464f3c5f6f80b28e965719ca602
--
Ammar Faizi
^ permalink raw reply [flat|nested] 5+ messages in thread* [PATCH liburing v2 1/3] liburing: Clean up `-Wshorten-64-to-32` warnings from clang 2022-10-20 13:14 [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Ammar Faizi @ 2022-10-20 13:14 ` Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 2/3] Makefile: Introduce `LIBURING_CFLAGS` variable Ammar Faizi ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: Ammar Faizi @ 2022-10-20 13:14 UTC (permalink / raw) To: Jens Axboe Cc: Dylan Yudaken, Ammar Faizi, Pavel Begunkov, GNU/Weeb Mailing List, io-uring Mailing List, Facebook Kernel Team, Dylan Yudaken From: Dylan Yudaken <[email protected]> liburing has a couple of int shortening issues found by clang. Clean them all. This cleanup is particularly useful for build systems that include these files and run with that error enabled. Link: https://lore.kernel.org/io-uring/[email protected] Signed-off-by: Dylan Yudaken <[email protected]> Co-authored-by: Ammar Faizi <[email protected]> Signed-off-by: Ammar Faizi <[email protected]> --- src/arch/syscall-defs.h | 4 ++-- src/register.c | 5 ++++- src/setup.c | 12 ++++++------ src/syscall.h | 4 ++-- 4 files changed, 14 insertions(+), 11 deletions(-) diff --git a/src/arch/syscall-defs.h b/src/arch/syscall-defs.h index 4afb2af..d351f8b 100644 --- a/src/arch/syscall-defs.h +++ b/src/arch/syscall-defs.h @@ -11,9 +11,9 @@ static inline int __sys_open(const char *pathname, int flags, mode_t mode) * Some architectures don't have __NR_open, but __NR_openat. */ #ifdef __NR_open - return __do_syscall3(__NR_open, pathname, flags, mode); + return (int) __do_syscall3(__NR_open, pathname, flags, mode); #else - return __do_syscall4(__NR_openat, AT_FDCWD, pathname, flags, mode); + return (int) __do_syscall4(__NR_openat, AT_FDCWD, pathname, flags, mode); #endif } diff --git a/src/register.c b/src/register.c index 0a2e5af..e849825 100644 --- a/src/register.c +++ b/src/register.c @@ -277,8 +277,11 @@ int io_uring_enable_rings(struct io_uring *ring) int io_uring_register_iowq_aff(struct io_uring *ring, size_t cpusz, const cpu_set_t *mask) { + if (cpusz >= (1U << 31)) + return -EINVAL; + return __sys_io_uring_register(ring->ring_fd, IORING_REGISTER_IOWQ_AFF, - mask, cpusz); + mask, (int) cpusz); } int io_uring_unregister_iowq_aff(struct io_uring *ring) diff --git a/src/setup.c b/src/setup.c index 21283eb..d918f86 100644 --- a/src/setup.c +++ b/src/setup.c @@ -248,29 +248,29 @@ __cold void io_uring_free_probe(struct io_uring_probe *probe) uring_free(probe); } -static inline int __fls(int x) +static inline int __fls(unsigned long x) { if (!x) return 0; - return 8 * sizeof(x) - __builtin_clz(x); + return 8 * sizeof(x) - __builtin_clzl(x); } static unsigned roundup_pow2(unsigned depth) { - return 1UL << __fls(depth - 1); + return 1U << __fls(depth - 1); } -static size_t npages(size_t size, unsigned page_size) +static size_t npages(size_t size, long page_size) { size--; size /= page_size; - return __fls(size); + return __fls((int) size); } #define KRING_SIZE 320 static size_t rings_size(struct io_uring_params *p, unsigned entries, - unsigned cq_entries, unsigned page_size) + unsigned cq_entries, long page_size) { size_t pages, sq_size, cq_size; diff --git a/src/syscall.h b/src/syscall.h index f750782..8f03dfc 100644 --- a/src/syscall.h +++ b/src/syscall.h @@ -23,9 +23,9 @@ static inline void *ERR_PTR(intptr_t n) return (void *) n; } -static inline intptr_t PTR_ERR(const void *ptr) +static inline int PTR_ERR(const void *ptr) { - return (intptr_t) ptr; + return (int) (intptr_t) ptr; } static inline bool IS_ERR(const void *ptr) -- Ammar Faizi ^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH liburing v2 2/3] Makefile: Introduce `LIBURING_CFLAGS` variable 2022-10-20 13:14 [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 1/3] liburing: Clean up `-Wshorten-64-to-32` warnings from clang Ammar Faizi @ 2022-10-20 13:14 ` Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 3/3] github: Append `-Wshorten-64-to-32` flag for clang build Ammar Faizi 2022-10-20 14:11 ` [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Jens Axboe 3 siblings, 0 replies; 5+ messages in thread From: Ammar Faizi @ 2022-10-20 13:14 UTC (permalink / raw) To: Jens Axboe Cc: Dylan Yudaken, Ammar Faizi, Pavel Begunkov, GNU/Weeb Mailing List, io-uring Mailing List, Facebook Kernel Team From: Ammar Faizi <[email protected]> `LIBURING_CFLAGS` will be appended to `CFLAGS` but it only applies to files in the `src/` directory (the main library). The first use case of this variable is for appending a clang-specific flag, `-Wshorten-64-to-32` in the GitHub bot. Signed-off-by: Ammar Faizi <[email protected]> --- src/Makefile | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/Makefile b/src/Makefile index 73a98ba..09617fb 100644 --- a/src/Makefile +++ b/src/Makefile @@ -5,11 +5,14 @@ includedir ?= $(prefix)/include libdir ?= $(prefix)/lib libdevdir ?= $(prefix)/lib +LIBURING_CFLAGS ?= CPPFLAGS ?= override CPPFLAGS += -D_GNU_SOURCE \ -Iinclude/ -include ../config-host.h CFLAGS ?= -g -O3 -Wall -Wextra -fno-stack-protector -override CFLAGS += -Wno-unused-parameter -Wno-sign-compare -DLIBURING_INTERNAL +override CFLAGS += -Wno-unused-parameter -Wno-sign-compare \ + -DLIBURING_INTERNAL \ + $(LIBURING_CFLAGS) SO_CFLAGS=-fPIC $(CFLAGS) L_CFLAGS=$(CFLAGS) LINK_FLAGS= -- Ammar Faizi ^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH liburing v2 3/3] github: Append `-Wshorten-64-to-32` flag for clang build 2022-10-20 13:14 [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 1/3] liburing: Clean up `-Wshorten-64-to-32` warnings from clang Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 2/3] Makefile: Introduce `LIBURING_CFLAGS` variable Ammar Faizi @ 2022-10-20 13:14 ` Ammar Faizi 2022-10-20 14:11 ` [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Jens Axboe 3 siblings, 0 replies; 5+ messages in thread From: Ammar Faizi @ 2022-10-20 13:14 UTC (permalink / raw) To: Jens Axboe Cc: Dylan Yudaken, Ammar Faizi, Pavel Begunkov, GNU/Weeb Mailing List, io-uring Mailing List, Facebook Kernel Team From: Ammar Faizi <[email protected]> liburing has a couple of int shortening issues found by clang. A previous commit has cleaned them up. Integrate -Wshorten-64-to-32 flag to the GitHub bot to spot the same issue in the future. This flag is clang-specific, it currently doesn't exist in GCC. Signed-off-by: Ammar Faizi <[email protected]> --- .github/workflows/build.yml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml index 2608644..b0e669d 100644 --- a/.github/workflows/build.yml +++ b/.github/workflows/build.yml @@ -26,6 +26,7 @@ jobs: cxx_pkg: clang cc: clang cxx: clang++ + extra_flags: -Wshorten-64-to-32 # x86 (32-bit) gcc - arch: i686 @@ -86,6 +87,9 @@ jobs: env: FLAGS: -g -O3 -Wall -Wextra -Werror + # Flags for building sources in src/ dir only. + LIBURING_CFLAGS: ${{matrix.extra_flags}} + steps: - name: Checkout source uses: actions/checkout@v2 -- Ammar Faizi ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings 2022-10-20 13:14 [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Ammar Faizi ` (2 preceding siblings ...) 2022-10-20 13:14 ` [PATCH liburing v2 3/3] github: Append `-Wshorten-64-to-32` flag for clang build Ammar Faizi @ 2022-10-20 14:11 ` Jens Axboe 3 siblings, 0 replies; 5+ messages in thread From: Jens Axboe @ 2022-10-20 14:11 UTC (permalink / raw) To: Ammar Faizi Cc: Dylan Yudaken, io-uring Mailing List, GNU/Weeb Mailing List, Pavel Begunkov, Facebook Kernel Team On Thu, 20 Oct 2022 20:14:52 +0700, Ammar Faizi wrote: > From: Ammar Faizi <[email protected]> > > Hi Jens, > > This is a v2. > > v2: > - Fix Signed-off-by tag. > - Make the cast in patch #1 consistent. > > [...] Applied, thanks! [1/3] liburing: Clean up `-Wshorten-64-to-32` warnings from clang commit: b9df4750ce9335437a34fd93c76863d871b70416 [2/3] Makefile: Introduce `LIBURING_CFLAGS` variable commit: 1755faf1737d0d84775aa46dd0a2b4b2e3474d28 [3/3] github: Append `-Wshorten-64-to-32` flag for clang build commit: 80817b7cd56b96a095c3cb4583a357d16fb867f1 Best regards, -- Jens Axboe ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-10-20 14:11 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-10-20 13:14 [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 1/3] liburing: Clean up `-Wshorten-64-to-32` warnings from clang Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 2/3] Makefile: Introduce `LIBURING_CFLAGS` variable Ammar Faizi 2022-10-20 13:14 ` [PATCH liburing v2 3/3] github: Append `-Wshorten-64-to-32` flag for clang build Ammar Faizi 2022-10-20 14:11 ` [PATCH liburing v2 0/3] Clean up clang `-Wshorten-64-to-32` warnings Jens Axboe
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