sys/src/capability.c File Reference

capabilities and affinities More...

#include <far_pointers.h>
#include <linux/sched.h>
#include <ssdef.h>
#include <cpbdef.h>
#include <ipldef.h>
#include <statedef.h>
#include <internals.h>
#include <smp_routines.h>
#include <asm/hw_irq.h>
#include <prvdef.h>
#include <exe_routines.h>
#include <starlet.h>
#include <capdef.h>

Go to the source code of this file.

Functions
int	sch_calculate_affinity (int mask)
int	sch_clear_affinity (unsigned int cpu_mask, struct _pcb *pcb, unsigned int flags, UINT64_PQ prev_mask_p)
int	sch_add_cpu_cap (unsigned int cpu_id, unsigned int mask, UINT64_PQ prev_mask_p)
	add cpu capabilities - see 7.0 2.5
int	sch_clear_capability (struct _pcb *pcb, unsigned int mask, unsigned int cpu_id, unsigned int flags, UINT64_PQ prev_mask_p)
	set process capability - see 7.0 2.5
int	sch_set_affinity (unsigned int cpu_mask, struct _pcb *pcb, unsigned int flags, UINT64_PQ prev_mask_p)
	set affinity - see 7.0 2.5.2
	sch_remove_cpu_cap (unsigned int cpu_id, unsigned int mask, UINT64_PQ prev_mask_p)
	remove cpu capabilities - see 5.2 12.5.4 or 7.0 2.5
int	sch_set_capability (struct _pcb *pcb, unsigned int mask, unsigned int cpu_id, unsigned int flags, UINT64_PQ prev_mask_p)
	set process capability - see 7.0 2.5
int	sch_acquire_affinity (struct _pcb *pcb, int obsolete, int cpu_id)
	acquire affinity - see 5.2 12.5.4 or 7.0 2.5.4
int	sch_release_affinity (struct _pcb *pcb)
	release (acquire in reverse) affinity - see 7.0 2.5.4
int	scs_std_change_affinity (struct _ucb *ucb_p)
int	sch_release_capability (struct _pcb *pcb, unsigned int mask, unsigned int cpu_id, unsigned int flags, UINT64_PQ prev_mask_p)
int	sch_require_capability (struct _pcb *pcb, unsigned int mask, unsigned int cpu_id, unsigned int flags, UINT64_PQ prev_mask_p)
	remove cpu capabilities - see 5.2 12.5.4
asmlinkage int	exe_cpu_capabilities (int cpu_id, struct _generic_64 *select_mask, struct _generic_64 *modify_mask, struct _generic_64 *prev_mask, struct _generic_64 *flags)
	modify cpu capabilities - see 7.0 2.5
asmlinkage int	exe_process_capabilities (unsigned int *pidadr, void *prcnam, struct _generic_64 *select_mask, struct _generic_64 *modify_mask, struct _generic_64 *prev_mask, struct _generic_64 *flags)
	modify process user capabilities - see 7.0 2.5
asmlinkage int	exe_process_capabilities_wrap (struct struct_args *s)

---

Detailed Description

capabilities and affinities

Author:

Roar Thronæs

Definition in file capability.c.

---

Function Documentation

asmlinkage int exe_cpu_capabilities	(	int	cpu_id,
		struct _generic_64 *	select_mask,
		struct _generic_64 *	modify_mask,
		struct _generic_64 *	prev_mask,
		struct _generic_64 *	flags
	)

modify cpu capabilities - see 7.0 2.5

Definition at line 227 of file capability.c.

References CAP_M_FLAG_DEFAULT_ONLY, ctl_gl_pcb, IPL__ASTDEL, PRV_M_ALTPRI, PRV_M_WORLD, sch_add_cpu_cap(), sch_gl_default_cpu_cap, sch_remove_cpu_cap(), smp_gl_cpu_data, SPIN_SCHED, SS__NOPRIV, and SS__NORMAL.

asmlinkage int exe_process_capabilities	(	unsigned int *	pidadr,
		void *	prcnam,
		struct _generic_64 *	select_mask,
		struct _generic_64 *	modify_mask,
		struct _generic_64 *	prev_mask,
		struct _generic_64 *	flags
	)

modify process user capabilities - see 7.0 2.5

call clear capability

call set capability? TODO check and fix typo

Definition at line 267 of file capability.c.

References _pcb, CAP_M_FLAG_DEFAULT_ONLY, ctl_gl_pcb, exe_nampid(), IPL__ASTDEL, sch_clear_capability(), sch_gl_default_process_cap, sch_release_capability(), sch_require_capability(), SPIN_SCHED, SS__NOPRIV, and SS__NORMAL.

Referenced by exe_process_capabilities_wrap().

asmlinkage int exe_process_capabilities_wrap

(

struct struct_args *

s

)

Definition at line 322 of file capability.c.

References exe_process_capabilities(), struct_args::s1, struct_args::s2, struct_args::s3, struct_args::s4, struct_args::s5, and struct_args::s6.

int sch_acquire_affinity	(	struct _pcb *	pcb,
		int	obsolete,
		int	cpu_id
	)

acquire affinity - see 5.2 12.5.4 or 7.0 2.5.4

use affinity_skip from global (non-7.0 member) TODO check if used

note that pcb capability is not 7.0

set implicit affinity flag

store cpu_id in ktb bias_cell, probably pcb affinity, TODO both?

if current pcb

do resched interrupt or send one to other cpu

Definition at line 133 of file capability.c.

References CPU_M_RESCHED, ctl_gl_pcb, smp_send_work(), and SS__NORMAL.

Referenced by exe_set_implicit_affinity().

int sch_add_cpu_cap	(	unsigned int	cpu_id,
		unsigned int	mask,
		UINT64_PQ	prev_mask_p
	)

add cpu capabilities - see 7.0 2.5

increase capability sequence

Definition at line 51 of file capability.c.

References sch_al_cpu_cap, sch_gl_capability_sequence, smp_gl_cpu_data, and SS__NORMAL.

Referenced by exe_cpu_capabilities(), and vms_init().

int sch_calculate_affinity

(

int

mask

)

Definition at line 25 of file capability.c.

References smp_gl_cpu_data.

int sch_clear_affinity	(	unsigned int	cpu_mask,
		struct _pcb *	pcb,
		unsigned int	flags,
		UINT64_PQ	prev_mask_p
	)

Definition at line 35 of file capability.c.

References CPB_M_FLAG_PERMANENT, and SS__NORMAL.

Referenced by exe_process_affinity().

int sch_clear_capability	(	struct _pcb *	pcb,
		unsigned int	mask,
		unsigned int	cpu_id,
		unsigned int	flags,
		UINT64_PQ	prev_mask_p
	)

set process capability - see 7.0 2.5

Definition at line 65 of file capability.c.

References SS__NORMAL.

Referenced by exe_process_capabilities().

int sch_release_affinity

(

struct _pcb *

pcb

)

release (acquire in reverse) affinity - see 7.0 2.5.4

note that pcb capability is not 7.0

clear implicit affinity flag

Definition at line 158 of file capability.c.

References SS__NORMAL.

Referenced by exe_set_implicit_affinity().

int sch_release_capability	(	struct _pcb *	pcb,
		unsigned int	mask,
		unsigned int	cpu_id,
		unsigned int	flags,
		UINT64_PQ	prev_mask_p
	)

Definition at line 167 of file capability.c.

References SS__NORMAL.

Referenced by exe_process_capabilities().

sch_remove_cpu_cap	(	unsigned int	cpu_id,
		unsigned int	mask,
		UINT64_PQ	prev_mask_p
	)

remove cpu capabilities - see 5.2 12.5.4 or 7.0 2.5

as add, but in reverse maybe it has need for rescheduling too

clear cpu-data cpu capability bit

and clear the corresponding bit in cpu_cap table

increment capability sequence to indicate a change

get current pcb and compare its mask

do resched interrupt or send one to other cpu

Definition at line 96 of file capability.c.

References _pcb, CPU_M_RESCHED, ctl_gl_pcb, sch_al_cpu_cap, sch_gl_capability_sequence, smp_gl_cpu_data, smp_send_work(), and SS__NORMAL.

Referenced by exe_cpu_capabilities().

int sch_require_capability	(	struct _pcb *	pcb,
		unsigned int	mask,
		unsigned int	cpu_id,
		unsigned int	flags,
		UINT64_PQ	prev_mask_p
	)

remove cpu capabilities - see 5.2 12.5.4

acquire spinlock sched

save prev mask

sets the new or-ed capability

if wanted, set pcb_l_permanant_capability

calculate affinity

if running pcb

if current affinity is not the cpu_id

do resched interrupt or send one to other cpu

release spinlock sched

Definition at line 177 of file capability.c.

References CPB_M_FLAG_PERMANENT, CPU_M_RESCHED, ctl_gl_pcb, IPL__SCHED, smp_gl_cpu_data, smp_send_work(), SPIN_SCHED, and SS__NORMAL.

Referenced by exe_process_capabilities().

int sch_set_affinity	(	unsigned int	cpu_mask,
		struct _pcb *	pcb,
		unsigned int	flags,
		UINT64_PQ	prev_mask_p
	)

set affinity - see 7.0 2.5.2

store a new value if pcb affinity (7.0 ktb affinity)

Definition at line 77 of file capability.c.

References CPB_M_FLAG_PERMANENT, and SS__NORMAL.

Referenced by exe_process_affinity().

int sch_set_capability	(	struct _pcb *	pcb,
		unsigned int	mask,
		unsigned int	cpu_id,
		unsigned int	flags,
		UINT64_PQ	prev_mask_p
	)

set process capability - see 7.0 2.5

Definition at line 121 of file capability.c.

References SS__NORMAL.

int scs_std_change_affinity

(

struct _ucb *

ucb_p

)