Revision 9d514262425691dddf942edea8bc9919e66fe140 authored by Wanpeng Li on 13 May 2015, 06:01:03 UTC, committed by Ingo Molnar on 19 June 2015, 08:06:46 UTC
This patch adds a check that prevents futile attempts to move DL tasks to a CPU with active tasks of equal or earlier deadline. The same behavior as commit 80e3d87b2c55 ("sched/rt: Reduce rq lock contention by eliminating locking of non-feasible target") for rt class. Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Juri Lelli <juri.lelli@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1431496867-4194-3-git-send-email-wanpeng.li@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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remoteproc_internal.h
/*
* Remote processor framework
*
* Copyright (C) 2011 Texas Instruments, Inc.
* Copyright (C) 2011 Google, Inc.
*
* Ohad Ben-Cohen <ohad@wizery.com>
* Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef REMOTEPROC_INTERNAL_H
#define REMOTEPROC_INTERNAL_H
#include <linux/irqreturn.h>
#include <linux/firmware.h>
struct rproc;
/**
* struct rproc_fw_ops - firmware format specific operations.
* @find_rsc_table: find the resource table inside the firmware image
* @find_loaded_rsc_table: find the loaded resouce table
* @load: load firmeware to memory, where the remote processor
* expects to find it
* @sanity_check: sanity check the fw image
* @get_boot_addr: get boot address to entry point specified in firmware
*/
struct rproc_fw_ops {
struct resource_table *(*find_rsc_table) (struct rproc *rproc,
const struct firmware *fw,
int *tablesz);
struct resource_table *(*find_loaded_rsc_table)(struct rproc *rproc,
const struct firmware *fw);
int (*load)(struct rproc *rproc, const struct firmware *fw);
int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
};
/* from remoteproc_core.c */
void rproc_release(struct kref *kref);
irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int vq_id);
/* from remoteproc_virtio.c */
int rproc_add_virtio_dev(struct rproc_vdev *rvdev, int id);
void rproc_remove_virtio_dev(struct rproc_vdev *rvdev);
/* from remoteproc_debugfs.c */
void rproc_remove_trace_file(struct dentry *tfile);
struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
struct rproc_mem_entry *trace);
void rproc_delete_debug_dir(struct rproc *rproc);
void rproc_create_debug_dir(struct rproc *rproc);
void rproc_init_debugfs(void);
void rproc_exit_debugfs(void);
void rproc_free_vring(struct rproc_vring *rvring);
int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);
void *rproc_da_to_va(struct rproc *rproc, u64 da, int len);
int rproc_trigger_recovery(struct rproc *rproc);
static inline
int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw)
{
if (rproc->fw_ops->sanity_check)
return rproc->fw_ops->sanity_check(rproc, fw);
return 0;
}
static inline
u32 rproc_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
{
if (rproc->fw_ops->get_boot_addr)
return rproc->fw_ops->get_boot_addr(rproc, fw);
return 0;
}
static inline
int rproc_load_segments(struct rproc *rproc, const struct firmware *fw)
{
if (rproc->fw_ops->load)
return rproc->fw_ops->load(rproc, fw);
return -EINVAL;
}
static inline
struct resource_table *rproc_find_rsc_table(struct rproc *rproc,
const struct firmware *fw, int *tablesz)
{
if (rproc->fw_ops->find_rsc_table)
return rproc->fw_ops->find_rsc_table(rproc, fw, tablesz);
return NULL;
}
static inline
struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc,
const struct firmware *fw)
{
if (rproc->fw_ops->find_loaded_rsc_table)
return rproc->fw_ops->find_loaded_rsc_table(rproc, fw);
return NULL;
}
extern const struct rproc_fw_ops rproc_elf_fw_ops;
#endif /* REMOTEPROC_INTERNAL_H */
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