From: Mike Christie <michael.christie@oracle.com> To: geert@linux-m68k.org, vverma@digitalocean.com, hdanton@sina.com, hch@infradead.org, stefanha@redhat.com, jasowang@redhat.com, mst@redhat.com, sgarzare@redhat.com, virtualization@lists.linux-foundation.org, christian.brauner@ubuntu.com, axboe@kernel.dk, linux-kernel@vger.kernel.org Cc: Christoph Hellwig <hch@lst.de> Subject: [PATCH V6 01/10] fork: Make IO worker options flag based Date: Mon, 29 Nov 2021 13:46:58 -0600 [thread overview] Message-ID: <20211129194707.5863-2-michael.christie@oracle.com> (raw) In-Reply-To: <20211129194707.5863-1-michael.christie@oracle.com> This patchset adds a couple new options to kernel_clone_args for IO thread like/related users. Instead of adding new fields to kernel_clone_args for each option, this moves us to a flags based approach by first converting io_thread. Signed-off-by: Mike Christie <michael.christie@oracle.com> Suggested-by: Christian Brauner <christian.brauner@ubuntu.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Reviewed-by: Christoph Hellwig <hch@lst.de> --- include/linux/sched/task.h | 4 +++- kernel/fork.c | 4 ++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 058d7f371e25..65d5ec3a8a04 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -18,8 +18,11 @@ struct css_set; /* All the bits taken by the old clone syscall. */ #define CLONE_LEGACY_FLAGS 0xffffffffULL +#define USER_WORKER_IO BIT(0) + struct kernel_clone_args { u64 flags; + u32 worker_flags; int __user *pidfd; int __user *child_tid; int __user *parent_tid; @@ -31,7 +34,6 @@ struct kernel_clone_args { /* Number of elements in *set_tid */ size_t set_tid_size; int cgroup; - int io_thread; struct cgroup *cgrp; struct css_set *cset; }; diff --git a/kernel/fork.c b/kernel/fork.c index 3244cc56b697..6effd839d566 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2023,7 +2023,7 @@ static __latent_entropy struct task_struct *copy_process( p = dup_task_struct(current, node); if (!p) goto fork_out; - if (args->io_thread) { + if (args->worker_flags & USER_WORKER_IO) { /* * Mark us an IO worker, and block any signal that isn't * fatal or STOP @@ -2524,7 +2524,7 @@ struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node) .exit_signal = (lower_32_bits(flags) & CSIGNAL), .stack = (unsigned long)fn, .stack_size = (unsigned long)arg, - .io_thread = 1, + .worker_flags = USER_WORKER_IO, }; return copy_process(NULL, 0, node, &args); -- 2.25.1 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
WARNING: multiple messages have this Message-ID (diff)
From: Mike Christie <michael.christie@oracle.com> To: geert@linux-m68k.org, vverma@digitalocean.com, hdanton@sina.com, hch@infradead.org, stefanha@redhat.com, jasowang@redhat.com, mst@redhat.com, sgarzare@redhat.com, virtualization@lists.linux-foundation.org, christian.brauner@ubuntu.com, axboe@kernel.dk, linux-kernel@vger.kernel.org Cc: Mike Christie <michael.christie@oracle.com>, Christoph Hellwig <hch@lst.de> Subject: [PATCH V6 01/10] fork: Make IO worker options flag based Date: Mon, 29 Nov 2021 13:46:58 -0600 [thread overview] Message-ID: <20211129194707.5863-2-michael.christie@oracle.com> (raw) In-Reply-To: <20211129194707.5863-1-michael.christie@oracle.com> This patchset adds a couple new options to kernel_clone_args for IO thread like/related users. Instead of adding new fields to kernel_clone_args for each option, this moves us to a flags based approach by first converting io_thread. Signed-off-by: Mike Christie <michael.christie@oracle.com> Suggested-by: Christian Brauner <christian.brauner@ubuntu.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Reviewed-by: Christoph Hellwig <hch@lst.de> --- include/linux/sched/task.h | 4 +++- kernel/fork.c | 4 ++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 058d7f371e25..65d5ec3a8a04 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -18,8 +18,11 @@ struct css_set; /* All the bits taken by the old clone syscall. */ #define CLONE_LEGACY_FLAGS 0xffffffffULL +#define USER_WORKER_IO BIT(0) + struct kernel_clone_args { u64 flags; + u32 worker_flags; int __user *pidfd; int __user *child_tid; int __user *parent_tid; @@ -31,7 +34,6 @@ struct kernel_clone_args { /* Number of elements in *set_tid */ size_t set_tid_size; int cgroup; - int io_thread; struct cgroup *cgrp; struct css_set *cset; }; diff --git a/kernel/fork.c b/kernel/fork.c index 3244cc56b697..6effd839d566 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2023,7 +2023,7 @@ static __latent_entropy struct task_struct *copy_process( p = dup_task_struct(current, node); if (!p) goto fork_out; - if (args->io_thread) { + if (args->worker_flags & USER_WORKER_IO) { /* * Mark us an IO worker, and block any signal that isn't * fatal or STOP @@ -2524,7 +2524,7 @@ struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node) .exit_signal = (lower_32_bits(flags) & CSIGNAL), .stack = (unsigned long)fn, .stack_size = (unsigned long)arg, - .io_thread = 1, + .worker_flags = USER_WORKER_IO, }; return copy_process(NULL, 0, node, &args); -- 2.25.1
next prev parent reply other threads:[~2021-11-29 19:47 UTC|newest] Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-29 19:46 [PATCH V6 01/10] Use copy_process in vhost layer Mike Christie 2021-11-29 19:46 ` Mike Christie 2021-11-29 19:46 ` Mike Christie [this message] 2021-11-29 19:46 ` [PATCH V6 01/10] fork: Make IO worker options flag based Mike Christie 2021-11-29 19:46 ` [PATCH V6 02/10] fork/vm: Move common PF_IO_WORKER behavior to new flag Mike Christie 2021-11-29 19:46 ` Mike Christie 2021-11-29 19:47 ` [PATCH V6 03/10] fork: add USER_WORKER flag to not dup/clone files Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-11-29 19:47 ` [PATCH V6 04/10] fork: Add USER_WORKER flag to ignore signals Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-11-29 19:47 ` [PATCH V6 05/10] signal: Perfom autoreap for PF_USER_WORKER Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-12-17 18:42 ` Eric W. Biederman 2021-12-17 18:42 ` Eric W. Biederman 2021-11-29 19:47 ` [PATCH V6 06/10] fork: add helpers to clone a process for kernel use Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-12-17 18:53 ` Eric W. Biederman 2021-12-17 18:53 ` Eric W. Biederman 2021-11-29 19:47 ` [PATCH V6 07/10] io_uring: switch to user_worker Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-11-29 19:47 ` [PATCH V6 08/10] fork: remove create_io_thread Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-11-29 19:47 ` [PATCH V6 09/10] vhost: move worker thread fields to new struct Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-11-29 19:47 ` [PATCH V6 10/10] vhost: use user_worker to check RLIMITs Mike Christie 2021-11-29 19:47 ` Mike Christie 2021-12-17 19:01 ` Eric W. Biederman 2021-12-17 19:01 ` Eric W. Biederman 2021-12-08 20:34 ` [PATCH V6 01/10] Use copy_process in vhost layer Michael S. Tsirkin 2021-12-08 20:34 ` Michael S. Tsirkin 2021-12-08 22:13 ` michael.christie 2021-12-08 22:13 ` michael.christie 2021-12-09 9:32 ` Christian Brauner 2021-12-17 19:26 ` Eric W. Biederman 2021-12-17 19:26 ` Eric W. Biederman 2021-12-17 22:08 ` michael.christie 2021-12-17 22:08 ` michael.christie 2021-12-22 0:20 ` Eric W. Biederman 2021-12-22 0:20 ` Eric W. Biederman 2021-12-22 17:32 ` Mike Christie 2021-12-22 17:32 ` Mike Christie 2021-12-22 18:24 ` Eric W. Biederman 2021-12-22 18:24 ` Eric W. Biederman 2021-12-22 20:25 ` Michael S. Tsirkin 2021-12-22 20:25 ` Michael S. Tsirkin 2022-01-17 16:41 ` Mike Christie 2022-01-17 16:41 ` Mike Christie 2022-01-17 17:31 ` Eric W. Biederman 2022-01-17 17:31 ` Eric W. Biederman 2022-01-18 18:51 ` Mike Christie 2022-01-18 18:51 ` Mike Christie 2022-01-18 19:00 ` Mike Christie 2022-01-18 19:00 ` Mike Christie 2022-01-18 19:12 ` Eric W. Biederman 2022-01-18 19:12 ` Eric W. Biederman 2022-02-02 21:02 ` Mike Christie 2022-02-02 21:02 ` Mike Christie
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