From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
patches@lists.linux.dev, Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 5.10 49/63] arch: setup PF_IO_WORKER threads like PF_KTHREAD
Date: Tue, 3 Jan 2023 09:14:19 +0100 [thread overview]
Message-ID: <20230103081311.526943108@linuxfoundation.org> (raw)
In-Reply-To: <20230103081308.548338576@linuxfoundation.org>
From: Jens Axboe <axboe@kernel.dk>
[ Upstream commit 4727dc20e0422211a0e0c72b1ace4ed6096df8a6 ]
PF_IO_WORKER are kernel threads too, but they aren't PF_KTHREAD in the
sense that we don't assign ->set_child_tid with our own structure. Just
ensure that every arch sets up the PF_IO_WORKER threads like kthreads
in the arch implementation of copy_thread().
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/alpha/kernel/process.c | 2 +-
arch/arc/kernel/process.c | 2 +-
arch/arm/kernel/process.c | 2 +-
arch/arm64/kernel/process.c | 2 +-
arch/csky/kernel/process.c | 2 +-
arch/h8300/kernel/process.c | 2 +-
arch/hexagon/kernel/process.c | 2 +-
arch/ia64/kernel/process.c | 2 +-
arch/m68k/kernel/process.c | 2 +-
arch/microblaze/kernel/process.c | 2 +-
arch/mips/kernel/process.c | 2 +-
arch/nds32/kernel/process.c | 2 +-
arch/nios2/kernel/process.c | 2 +-
arch/openrisc/kernel/process.c | 2 +-
arch/riscv/kernel/process.c | 2 +-
arch/s390/kernel/process.c | 2 +-
arch/sh/kernel/process_32.c | 2 +-
arch/sparc/kernel/process_32.c | 2 +-
arch/sparc/kernel/process_64.c | 2 +-
arch/um/kernel/process.c | 2 +-
arch/x86/kernel/process.c | 2 +-
arch/xtensa/kernel/process.c | 2 +-
22 files changed, 22 insertions(+), 22 deletions(-)
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -249,7 +249,7 @@ int copy_thread(unsigned long clone_flag
childti->pcb.ksp = (unsigned long) childstack;
childti->pcb.flags = 1; /* set FEN, clear everything else */
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
/* kernel thread */
memset(childstack, 0,
sizeof(struct switch_stack) + sizeof(struct pt_regs));
--- a/arch/arc/kernel/process.c
+++ b/arch/arc/kernel/process.c
@@ -191,7 +191,7 @@ int copy_thread(unsigned long clone_flag
childksp[0] = 0; /* fp */
childksp[1] = (unsigned long)ret_from_fork; /* blink */
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(c_regs, 0, sizeof(struct pt_regs));
c_callee->r13 = kthread_arg;
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -243,7 +243,7 @@ int copy_thread(unsigned long clone_flag
thread->cpu_domain = get_domain();
#endif
- if (likely(!(p->flags & PF_KTHREAD))) {
+ if (likely(!(p->flags & (PF_KTHREAD | PF_IO_WORKER)))) {
*childregs = *current_pt_regs();
childregs->ARM_r0 = 0;
if (stack_start)
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -398,7 +398,7 @@ int copy_thread(unsigned long clone_flag
ptrauth_thread_init_kernel(p);
- if (likely(!(p->flags & PF_KTHREAD))) {
+ if (likely(!(p->flags & (PF_KTHREAD | PF_IO_WORKER)))) {
*childregs = *current_pt_regs();
childregs->regs[0] = 0;
--- a/arch/csky/kernel/process.c
+++ b/arch/csky/kernel/process.c
@@ -49,7 +49,7 @@ int copy_thread(unsigned long clone_flag
/* setup thread.sp for switch_to !!! */
p->thread.sp = (unsigned long)childstack;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childregs, 0, sizeof(struct pt_regs));
childstack->r15 = (unsigned long) ret_from_kernel_thread;
childstack->r10 = kthread_arg;
--- a/arch/h8300/kernel/process.c
+++ b/arch/h8300/kernel/process.c
@@ -112,7 +112,7 @@ int copy_thread(unsigned long clone_flag
childregs = (struct pt_regs *) (THREAD_SIZE + task_stack_page(p)) - 1;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childregs, 0, sizeof(struct pt_regs));
childregs->retpc = (unsigned long) ret_from_kernel_thread;
childregs->er4 = topstk; /* arg */
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -73,7 +73,7 @@ int copy_thread(unsigned long clone_flag
sizeof(*ss));
ss->lr = (unsigned long)ret_from_fork;
p->thread.switch_sp = ss;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childregs, 0, sizeof(struct pt_regs));
/* r24 <- fn, r25 <- arg */
ss->r24 = usp;
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -338,7 +338,7 @@ copy_thread(unsigned long clone_flags, u
ia64_drop_fpu(p); /* don't pick up stale state from a CPU's fph */
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
if (unlikely(!user_stack_base)) {
/* fork_idle() called us */
return 0;
--- a/arch/m68k/kernel/process.c
+++ b/arch/m68k/kernel/process.c
@@ -157,7 +157,7 @@ int copy_thread(unsigned long clone_flag
*/
p->thread.fs = get_fs().seg;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
/* kernel thread */
memset(frame, 0, sizeof(struct fork_frame));
frame->regs.sr = PS_S;
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -59,7 +59,7 @@ int copy_thread(unsigned long clone_flag
struct pt_regs *childregs = task_pt_regs(p);
struct thread_info *ti = task_thread_info(p);
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
/* if we're creating a new kernel thread then just zeroing all
* the registers. That's OK for a brand new thread.*/
memset(childregs, 0, sizeof(struct pt_regs));
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -135,7 +135,7 @@ int copy_thread(unsigned long clone_flag
/* Put the stack after the struct pt_regs. */
childksp = (unsigned long) childregs;
p->thread.cp0_status = (read_c0_status() & ~(ST0_CU2|ST0_CU1)) | ST0_KERNEL_CUMASK;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
/* kernel thread */
unsigned long status = p->thread.cp0_status;
memset(childregs, 0, sizeof(struct pt_regs));
--- a/arch/nds32/kernel/process.c
+++ b/arch/nds32/kernel/process.c
@@ -156,7 +156,7 @@ int copy_thread(unsigned long clone_flag
memset(&p->thread.cpu_context, 0, sizeof(struct cpu_context));
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childregs, 0, sizeof(struct pt_regs));
/* kernel thread fn */
p->thread.cpu_context.r6 = stack_start;
--- a/arch/nios2/kernel/process.c
+++ b/arch/nios2/kernel/process.c
@@ -109,7 +109,7 @@ int copy_thread(unsigned long clone_flag
struct switch_stack *childstack =
((struct switch_stack *)childregs) - 1;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childstack, 0,
sizeof(struct switch_stack) + sizeof(struct pt_regs));
--- a/arch/openrisc/kernel/process.c
+++ b/arch/openrisc/kernel/process.c
@@ -167,7 +167,7 @@ copy_thread(unsigned long clone_flags, u
sp -= sizeof(struct pt_regs);
kregs = (struct pt_regs *)sp;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(kregs, 0, sizeof(struct pt_regs));
kregs->gpr[20] = usp; /* fn, kernel thread */
kregs->gpr[22] = arg;
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -114,7 +114,7 @@ int copy_thread(unsigned long clone_flag
memset(&p->thread.s, 0, sizeof(p->thread.s));
/* p->thread holds context to be restored by __switch_to() */
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
/* Kernel thread */
memset(childregs, 0, sizeof(struct pt_regs));
childregs->gp = gp_in_global;
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -127,7 +127,7 @@ int copy_thread(unsigned long clone_flag
frame->sf.gprs[9] = (unsigned long) frame;
/* Store access registers to kernel stack of new process. */
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
/* kernel thread */
memset(&frame->childregs, 0, sizeof(struct pt_regs));
frame->childregs.psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT |
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -114,7 +114,7 @@ int copy_thread(unsigned long clone_flag
childregs = task_pt_regs(p);
p->thread.sp = (unsigned long) childregs;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childregs, 0, sizeof(struct pt_regs));
p->thread.pc = (unsigned long) ret_from_kernel_thread;
childregs->regs[4] = arg;
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -309,7 +309,7 @@ int copy_thread(unsigned long clone_flag
ti->ksp = (unsigned long) new_stack;
p->thread.kregs = childregs;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
extern int nwindows;
unsigned long psr;
memset(new_stack, 0, STACKFRAME_SZ + TRACEREG_SZ);
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -597,7 +597,7 @@ int copy_thread(unsigned long clone_flag
sizeof(struct sparc_stackf));
t->fpsaved[0] = 0;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(child_trap_frame, 0, child_stack_sz);
__thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP] =
(current_pt_regs()->tstate + 1) & TSTATE_CWP;
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -157,7 +157,7 @@ int copy_thread(unsigned long clone_flag
unsigned long arg, struct task_struct * p, unsigned long tls)
{
void (*handler)(void);
- int kthread = current->flags & PF_KTHREAD;
+ int kthread = current->flags & (PF_KTHREAD | PF_IO_WORKER);
int ret = 0;
p->thread = (struct thread_struct) INIT_THREAD;
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -162,7 +162,7 @@ int copy_thread(unsigned long clone_flag
#endif
/* Kernel thread ? */
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childregs, 0, sizeof(struct pt_regs));
kthread_frame_init(frame, sp, arg);
return 0;
--- a/arch/xtensa/kernel/process.c
+++ b/arch/xtensa/kernel/process.c
@@ -217,7 +217,7 @@ int copy_thread(unsigned long clone_flag
p->thread.sp = (unsigned long)childregs;
- if (!(p->flags & PF_KTHREAD)) {
+ if (!(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
struct pt_regs *regs = current_pt_regs();
unsigned long usp = usp_thread_fn ?
usp_thread_fn : regs->areg[1];
next prev parent reply other threads:[~2023-01-03 8:16 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-03 8:13 [PATCH 5.10 00/63] 5.10.162-rc1 review Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 01/63] kernel: provide create_io_thread() helper Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 02/63] iov_iter: add helper to save iov_iter state Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 03/63] saner calling conventions for unlazy_child() Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 04/63] fs: add support for LOOKUP_CACHED Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 05/63] fix handling of nd->depth on LOOKUP_CACHED failures in try_to_unlazy* Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 06/63] Make sure nd->path.mnt and nd->path.dentry are always valid pointers Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 07/63] fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 08/63] tools headers UAPI: Sync openat2.h with the kernel sources Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 09/63] net: provide __sys_shutdown_sock() that takes a socket Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 10/63] net: add accept helper not installing fd Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 11/63] signal: Add task_sigpending() helper Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 12/63] fs: make do_renameat2() take struct filename Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 13/63] file: Rename __close_fd_get_file close_fd_get_file Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 14/63] fs: provide locked helper variant of close_fd_get_file() Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 15/63] entry: Add support for TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 16/63] task_work: Use TIF_NOTIFY_SIGNAL if available Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 17/63] x86: Wire up TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 18/63] arc: add support for TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 19/63] arm64: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 20/63] m68k: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 21/63] nios32: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 22/63] parisc: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 23/63] powerpc: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 24/63] mips: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 25/63] s390: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 26/63] um: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 27/63] sh: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 28/63] openrisc: " Greg Kroah-Hartman
2023-01-03 8:13 ` [PATCH 5.10 29/63] csky: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 30/63] hexagon: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 31/63] microblaze: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 32/63] arm: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 33/63] xtensa: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 34/63] alpha: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 35/63] c6x: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 36/63] h8300: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 37/63] ia64: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 38/63] nds32: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 39/63] riscv: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 40/63] sparc: " Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 41/63] ia64: dont call handle_signal() unless theres actually a signal queued Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 42/63] ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 43/63] alpha: fix TIF_NOTIFY_SIGNAL handling Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 44/63] task_work: remove legacy TWA_SIGNAL path Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 45/63] kernel: remove checking for TIF_NOTIFY_SIGNAL Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 46/63] coredump: Limit what can interrupt coredumps Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 47/63] kernel: allow fork with TIF_NOTIFY_SIGNAL pending Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 48/63] entry/kvm: Exit to user mode when TIF_NOTIFY_SIGNAL is set Greg Kroah-Hartman
2023-01-03 8:14 ` Greg Kroah-Hartman [this message]
2023-01-03 8:14 ` [PATCH 5.10 50/63] arch: ensure parisc/powerpc handle PF_IO_WORKER in copy_thread() Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 51/63] x86/process: setup io_threads more like normal user space threads Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 52/63] kernel: stop masking signals in create_io_thread() Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 53/63] kernel: dont call do_exit() for PF_IO_WORKER threads Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 54/63] task_work: add helper for more targeted task_work canceling Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 55/63] io_uring: import 5.15-stable io_uring Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 56/63] signal: kill JOBCTL_TASK_WORK Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 57/63] task_work: unconditionally run task_work from get_signal() Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 58/63] net: remove cmsg restriction from io_uring based send/recvmsg calls Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 59/63] Revert "proc: dont allow async path resolution of /proc/thread-self components" Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 60/63] Revert "proc: dont allow async path resolution of /proc/self components" Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 61/63] eventpoll: add EPOLL_URING_WAKE poll wakeup flag Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 62/63] eventfd: provide a eventfd_signal_mask() helper Greg Kroah-Hartman
2023-01-03 8:14 ` [PATCH 5.10 63/63] io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups Greg Kroah-Hartman
2023-01-03 13:44 ` [PATCH 5.10 00/63] 5.10.162-rc1 review Pavel Machek
2023-01-03 14:51 ` Guenter Roeck
2023-01-03 15:32 ` Jon Hunter
2023-01-03 16:16 ` Joel Fernandes
2023-01-04 5:29 ` Greg Kroah-Hartman
2023-01-04 21:56 ` Joel Fernandes
2023-01-05 11:43 ` Greg Kroah-Hartman
2023-01-03 18:16 ` Naresh Kamboju
2023-01-03 18:27 ` Florian Fainelli
2023-01-03 18:59 ` Allen Pais
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