diff options
| author | Thomas Weißschuh <thomas.weissschuh@linutronix.de> | 2025-12-30 08:08:44 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-01-14 08:56:40 +0100 |
| commit | 7158fc54b2c6f124eec0d7cd13bff69da0172e59 (patch) | |
| tree | d85a61e422ce8cb00dd786a11cb65ea01224e707 /kernel/sys.c | |
| parent | bec06cd6a140ceb62ee4634c9550212f5f05bcfd (diff) | |
vdso: Remove struct getcpu_cache
The cache parameter of getcpu() is useless nowadays for various reasons.
* It is never passed by userspace for either the vDSO or syscalls.
* It is never used by the kernel.
* It could not be made to work on the current vDSO architecture.
* The structure definition is not part of the UAPI headers.
* vdso_getcpu() is superseded by restartable sequences in any case.
Remove the struct and its header.
As a side-effect this gets rid of an unwanted inclusion of the linux/
header namespace from vDSO code.
[ tglx: Adapt to s390 upstream changes */
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390
Link: https://patch.msgid.link/20251230-getcpu_cache-v3-1-fb9c5f880ebe@linutronix.de
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 8b58eece4e58..f1780ab132a3 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -31,7 +31,6 @@ #include <linux/tty.h> #include <linux/signal.h> #include <linux/cn_proc.h> -#include <linux/getcpu.h> #include <linux/task_io_accounting_ops.h> #include <linux/seccomp.h> #include <linux/cpu.h> @@ -2876,8 +2875,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, return error; } -SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep, - struct getcpu_cache __user *, unused) +SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep, void __user *, unused) { int err = 0; int cpu = raw_smp_processor_id(); |