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Merge tag 'csky-for-linus-4.21' of git://github.com/c-sky/csky-linux

Browse Source 
Pull arch/csky updates from Guo Ren:
 "Here are three main features (cpu_hotplug, basic ftrace, basic perf)
  and some bugfixes:

  Features:
   - Add CPU-hotplug support for SMP
   - Add ftrace with function trace and function graph trace
   - Add Perf support
   - Add EM_CSKY_OLD 39
   - optimize kernel panic print.
   - remove syscall_exit_work

  Bugfixes:
   - fix abiv2 mmap(... O_SYNC) failure
   - fix gdb coredump error
   - remove vdsp implement for kernel
   - fix qemu failure to bootup sometimes
   - fix ftrace call-graph panic
   - fix device tree node reference leak
   - remove meaningless header-y
   - fix save hi,lo,dspcr regs in switch_stack
   - remove unused members in processor.h"

* tag 'csky-for-linus-4.21' of git://github.com/c-sky/csky-linux:
  csky: Add perf support for C-SKY
  csky: Add EM_CSKY_OLD 39
  clocksource/drivers/c-sky: fixup ftrace call-graph panic
  csky: ftrace call graph supported.
  csky: basic ftrace supported
  csky: remove unused members in processor.h
  csky: optimize kernel panic print.
  csky: stacktrace supported.
  csky: CPU-hotplug supported for SMP
  clocksource/drivers/c-sky: fixup qemu fail to bootup sometimes.
  csky: fixup save hi,lo,dspcr regs in switch_stack.
  csky: remove syscall_exit_work
  csky: fixup remove vdsp implement for kernel.
  csky: bugfix gdb coredump error.
  csky: fixup abiv2 mmap(... O_SYNC) failed.
  csky: define syscall_get_arch()
  elf-em.h: add EM_CSKY
  csky: remove meaningless header-y
  csky: Don't leak device tree node reference
This commit is contained in:
Linus Torvalds
2019-01-05 09:50:07 -08:00
parent a65981109f f50fd2d852
commit 9ee3b3f4a5
36 changed files with 1555 additions and 222 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
arch/csky/include/asm/elf.h
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@@ -7,7 +7,8 @@
#include <asm/ptrace.h>
#include <abi/regdef.h>
#define ELF_ARCH 252
#define ELF_ARCH EM_CSKY
#define EM_CSKY_OLD 39
/* CSKY Relocations */
#define R_CSKY_NONE 0
@@ -31,14 +32,20 @@ typedef unsigned long elf_greg_t;
typedef struct user_fp elf_fpregset_t;
#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
/*
* In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of
* elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough
* for coredump and no need full sizeof(struct pt_regs).
*/
#define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 2)
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)
#define elf_check_arch(x) (((x)->e_machine == ELF_ARCH) || \
((x)->e_machine == EM_CSKY_OLD))
/*
* These are used to set parameters in the core dumps.

13
arch/csky/include/asm/ftrace.h Normal file
View File

@@ -0,0 +1,13 @@
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_FTRACE_H
#define __ASM_CSKY_FTRACE_H
#define MCOUNT_INSN_SIZE 4
#define HAVE_FUNCTION_GRAPH_FP_TEST
#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
#endif /* __ASM_CSKY_FTRACE_H */

7
arch/csky/include/asm/perf_event.h Normal file
View File

@@ -0,0 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_PERF_EVENT_H
#define __ASM_CSKY_PERF_EVENT_H
#endif /* __ASM_PERF_EVENT_ELF_H */

15
arch/csky/include/asm/processor.h
View File

@@ -11,19 +11,13 @@
#include <asm/cache.h>
#include <abi/reg_ops.h>
#include <abi/regdef.h>
#include <abi/switch_context.h>
#ifdef CONFIG_CPU_HAS_FPU
#include <abi/fpu.h>
#endif
struct cpuinfo_csky {
unsigned long udelay_val;
unsigned long asid_cache;
/*
* Capability and feature descriptor structure for CSKY CPU
*/
unsigned long options;
unsigned int processor_id[4];
unsigned int fpu_id;
} __aligned(SMP_CACHE_BYTES);
extern struct cpuinfo_csky cpu_data[];
@@ -49,13 +43,6 @@ extern struct cpuinfo_csky cpu_data[];
struct thread_struct {
unsigned long ksp; /* kernel stack pointer */
unsigned long sr; /* saved status register */
unsigned long esp0; /* points to SR of stack frame */
unsigned long hi;
unsigned long lo;
/* Other stuff associated with the thread. */
unsigned long address; /* Last user fault */
unsigned long error_code;
/* FPU regs */
struct user_fp __aligned(16) user_fp;

4
arch/csky/include/asm/smp.h
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@@ -21,6 +21,10 @@ void __init set_send_ipi(void (*func)(const struct cpumask *mask), int irq);
#define raw_smp_processor_id() (current_thread_info()->cpu)
int __cpu_disable(void);
void __cpu_die(unsigned int cpu);
#endif /* CONFIG_SMP */
#endif /* __ASM_CSKY_SMP_H */

7
arch/csky/include/asm/syscall.h
View File

@@ -6,6 +6,7 @@
#include <linux/sched.h>
#include <linux/err.h>
#include <abi/regdef.h>
#include <uapi/linux/audit.h>
static inline int
syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
@@ -68,4 +69,10 @@ syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
memcpy(&regs->a1 + i * sizeof(regs->a1), args, n * sizeof(regs->a0));
}
static inline int
syscall_get_arch(void)
{
return AUDIT_ARCH_CSKY;
}
#endif /* __ASM_SYSCALL_H */

4
arch/csky/include/asm/thread_info.h
View File

@@ -10,6 +10,7 @@
#include <asm/types.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <abi/switch_context.h>
struct thread_info {
struct task_struct *task;
@@ -36,6 +37,9 @@ struct thread_info {
#define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT)
#define thread_saved_fp(tsk) \
((unsigned long)(((struct switch_stack *)(tsk->thread.ksp))->r8))
static inline struct thread_info *current_thread_info(void)
{
unsigned long sp;