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Message-ID: <20231216032651.3553101-10-kent.overstreet@linux.dev>
Date: Fri, 15 Dec 2023 22:26:19 -0500
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: linux-kernel@...r.kernel.org,
linux-mm@...ck.org,
linux-fsdevel@...r.kernel.org
Cc: Kent Overstreet <kent.overstreet@...ux.dev>,
tglx@...utronix.de,
x86@...nel.org,
tj@...nel.org,
peterz@...radead.org,
mathieu.desnoyers@...icios.com,
paulmck@...nel.org,
keescook@...omium.org,
dave.hansen@...ux.intel.com,
mingo@...hat.com,
will@...nel.org,
longman@...hat.com,
boqun.feng@...il.com,
brauner@...nel.org
Subject: [PATCH 20/50] posix-cpu-timers: Split out posix-timers_types.h
Trimming down sched.h dependencies: we don't want to include more than
the base types.
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Kent Overstreet <kent.overstreet@...ux.dev>
---
include/linux/posix-timers.h | 68 ++--------------------------
include/linux/posix-timers_types.h | 72 ++++++++++++++++++++++++++++++
include/linux/sched.h | 2 +-
3 files changed, 76 insertions(+), 66 deletions(-)
create mode 100644 include/linux/posix-timers_types.h
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index d607f51404fc..750b0647258d 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -2,40 +2,16 @@
#ifndef _linux_POSIX_TIMERS_H
#define _linux_POSIX_TIMERS_H
-#include <linux/spinlock.h>
+#include <linux/alarmtimer.h>
#include <linux/list.h>
#include <linux/mutex.h>
-#include <linux/alarmtimer.h>
+#include <linux/posix-timers_types.h>
+#include <linux/spinlock.h>
#include <linux/timerqueue.h>
struct kernel_siginfo;
struct task_struct;
-/*
- * Bit fields within a clockid:
- *
- * The most significant 29 bits hold either a pid or a file descriptor.
- *
- * Bit 2 indicates whether a cpu clock refers to a thread or a process.
- *
- * Bits 1 and 0 give the type: PROF=0, VIRT=1, SCHED=2, or FD=3.
- *
- * A clockid is invalid if bits 2, 1, and 0 are all set.
- */
-#define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3))
-#define CPUCLOCK_PERTHREAD(clock) \
- (((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0)
-
-#define CPUCLOCK_PERTHREAD_MASK 4
-#define CPUCLOCK_WHICH(clock) ((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK)
-#define CPUCLOCK_CLOCK_MASK 3
-#define CPUCLOCK_PROF 0
-#define CPUCLOCK_VIRT 1
-#define CPUCLOCK_SCHED 2
-#define CPUCLOCK_MAX 3
-#define CLOCKFD CPUCLOCK_MAX
-#define CLOCKFD_MASK (CPUCLOCK_PERTHREAD_MASK|CPUCLOCK_CLOCK_MASK)
-
static inline clockid_t make_process_cpuclock(const unsigned int pid,
const clockid_t clock)
{
@@ -109,44 +85,6 @@ static inline void cpu_timer_setexpires(struct cpu_timer *ctmr, u64 exp)
ctmr->node.expires = exp;
}
-/**
- * posix_cputimer_base - Container per posix CPU clock
- * @nextevt: Earliest-expiration cache
- * @tqhead: timerqueue head for cpu_timers
- */
-struct posix_cputimer_base {
- u64 nextevt;
- struct timerqueue_head tqhead;
-};
-
-/**
- * posix_cputimers - Container for posix CPU timer related data
- * @bases: Base container for posix CPU clocks
- * @timers_active: Timers are queued.
- * @expiry_active: Timer expiry is active. Used for
- * process wide timers to avoid multiple
- * task trying to handle expiry concurrently
- *
- * Used in task_struct and signal_struct
- */
-struct posix_cputimers {
- struct posix_cputimer_base bases[CPUCLOCK_MAX];
- unsigned int timers_active;
- unsigned int expiry_active;
-};
-
-/**
- * posix_cputimers_work - Container for task work based posix CPU timer expiry
- * @work: The task work to be scheduled
- * @mutex: Mutex held around expiry in context of this task work
- * @scheduled: @work has been scheduled already, no further processing
- */
-struct posix_cputimers_work {
- struct callback_head work;
- struct mutex mutex;
- unsigned int scheduled;
-};
-
static inline void posix_cputimers_init(struct posix_cputimers *pct)
{
memset(pct, 0, sizeof(*pct));
diff --git a/include/linux/posix-timers_types.h b/include/linux/posix-timers_types.h
new file mode 100644
index 000000000000..57fec639a9bb
--- /dev/null
+++ b/include/linux/posix-timers_types.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _linux_POSIX_TIMERS_TYPES_H
+#define _linux_POSIX_TIMERS_TYPES_H
+
+#include <linux/mutex_types.h>
+#include <linux/timerqueue.h>
+#include <linux/types.h>
+
+/*
+ * Bit fields within a clockid:
+ *
+ * The most significant 29 bits hold either a pid or a file descriptor.
+ *
+ * Bit 2 indicates whether a cpu clock refers to a thread or a process.
+ *
+ * Bits 1 and 0 give the type: PROF=0, VIRT=1, SCHED=2, or FD=3.
+ *
+ * A clockid is invalid if bits 2, 1, and 0 are all set.
+ */
+#define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3))
+#define CPUCLOCK_PERTHREAD(clock) \
+ (((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0)
+
+#define CPUCLOCK_PERTHREAD_MASK 4
+#define CPUCLOCK_WHICH(clock) ((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK)
+#define CPUCLOCK_CLOCK_MASK 3
+#define CPUCLOCK_PROF 0
+#define CPUCLOCK_VIRT 1
+#define CPUCLOCK_SCHED 2
+#define CPUCLOCK_MAX 3
+#define CLOCKFD CPUCLOCK_MAX
+#define CLOCKFD_MASK (CPUCLOCK_PERTHREAD_MASK|CPUCLOCK_CLOCK_MASK)
+
+/**
+ * posix_cputimer_base - Container per posix CPU clock
+ * @nextevt: Earliest-expiration cache
+ * @tqhead: timerqueue head for cpu_timers
+ */
+struct posix_cputimer_base {
+ u64 nextevt;
+ struct timerqueue_head tqhead;
+};
+
+/**
+ * posix_cputimers - Container for posix CPU timer related data
+ * @bases: Base container for posix CPU clocks
+ * @timers_active: Timers are queued.
+ * @expiry_active: Timer expiry is active. Used for
+ * process wide timers to avoid multiple
+ * task trying to handle expiry concurrently
+ *
+ * Used in task_struct and signal_struct
+ */
+struct posix_cputimers {
+ struct posix_cputimer_base bases[CPUCLOCK_MAX];
+ unsigned int timers_active;
+ unsigned int expiry_active;
+};
+
+/**
+ * posix_cputimers_work - Container for task work based posix CPU timer expiry
+ * @work: The task work to be scheduled
+ * @mutex: Mutex held around expiry in context of this task work
+ * @scheduled: @work has been scheduled already, no further processing
+ */
+struct posix_cputimers_work {
+ struct callback_head work;
+ struct mutex mutex;
+ unsigned int scheduled;
+};
+
+#endif /* _linux_POSIX_TIMERS_TYPES_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index e8892789969b..6d803d0904d9 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -31,7 +31,7 @@
#include <linux/syscall_user_dispatch.h>
#include <linux/mm_types_task.h>
#include <linux/task_io_accounting.h>
-#include <linux/posix-timers.h>
+#include <linux/posix-timers_types.h>
#include <linux/rseq.h>
#include <linux/seqlock.h>
#include <linux/kcsan.h>
--
2.43.0
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