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b64f34cdfe
This patch implements VIRT_CPU_ACCOUNTING for ia64, which enable us to use more accurate cpu time accounting. The VIRT_CPU_ACCOUNTING is an item of kernel config, which s390 and powerpc arch have. By turning this config on, these archs change the mechanism of cpu time accounting from tick-sampling based one to state-transition based one. The state-transition based accounting is done by checking time (cycle counter in processor) at every state-transition point, such as entrance/exit of kernel, interrupt, softirq etc. The difference between point to point is the actual time consumed during in the state. There is no doubt about that this value is more accurate than that of tick-sampling based accounting. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
150 lines
4 KiB
C
150 lines
4 KiB
C
/*
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* IA-32 ELF core dump support.
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*
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* Copyright (C) 2003 Arun Sharma <arun.sharma@intel.com>
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*
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* Derived from the x86_64 version
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*/
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#ifndef _ELFCORE32_H_
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#define _ELFCORE32_H_
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#include <asm/intrinsics.h>
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#include <asm/uaccess.h>
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#define USE_ELF_CORE_DUMP 1
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/* Override elfcore.h */
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#define _LINUX_ELFCORE_H 1
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typedef unsigned int elf_greg_t;
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#define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef struct ia32_user_i387_struct elf_fpregset_t;
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typedef struct ia32_user_fxsr_struct elf_fpxregset_t;
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struct elf_siginfo
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{
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int si_signo; /* signal number */
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int si_code; /* extra code */
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int si_errno; /* errno */
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};
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING
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/*
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* Hacks are here since types between compat_timeval (= pair of s32) and
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* ia64-native timeval (= pair of s64) are not compatible, at least a file
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* arch/ia64/ia32/../../../fs/binfmt_elf.c will get warnings from compiler on
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* use of cputime_to_timeval(), which usually an alias of jiffies_to_timeval().
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*/
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#define cputime_to_timeval(a,b) \
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do { (b)->tv_usec = 0; (b)->tv_sec = (a)/NSEC_PER_SEC; } while(0)
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#else
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#define jiffies_to_timeval(a,b) \
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do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; } while(0)
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#endif
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struct elf_prstatus
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{
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struct elf_siginfo pr_info; /* Info associated with signal */
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short pr_cursig; /* Current signal */
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unsigned int pr_sigpend; /* Set of pending signals */
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unsigned int pr_sighold; /* Set of held signals */
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pid_t pr_pid;
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pid_t pr_ppid;
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pid_t pr_pgrp;
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pid_t pr_sid;
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struct compat_timeval pr_utime; /* User time */
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struct compat_timeval pr_stime; /* System time */
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struct compat_timeval pr_cutime; /* Cumulative user time */
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struct compat_timeval pr_cstime; /* Cumulative system time */
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elf_gregset_t pr_reg; /* GP registers */
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int pr_fpvalid; /* True if math co-processor being used. */
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};
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#define ELF_PRARGSZ (80) /* Number of chars for args */
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struct elf_prpsinfo
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{
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char pr_state; /* numeric process state */
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char pr_sname; /* char for pr_state */
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char pr_zomb; /* zombie */
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char pr_nice; /* nice val */
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unsigned int pr_flag; /* flags */
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__u16 pr_uid;
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__u16 pr_gid;
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pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
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/* Lots missing */
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char pr_fname[16]; /* filename of executable */
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char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
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};
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#define ELF_CORE_COPY_REGS(pr_reg, regs) \
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pr_reg[0] = regs->r11; \
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pr_reg[1] = regs->r9; \
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pr_reg[2] = regs->r10; \
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pr_reg[3] = regs->r14; \
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pr_reg[4] = regs->r15; \
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pr_reg[5] = regs->r13; \
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pr_reg[6] = regs->r8; \
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pr_reg[7] = regs->r16 & 0xffff; \
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pr_reg[8] = (regs->r16 >> 16) & 0xffff; \
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pr_reg[9] = (regs->r16 >> 32) & 0xffff; \
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pr_reg[10] = (regs->r16 >> 48) & 0xffff; \
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pr_reg[11] = regs->r1; \
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pr_reg[12] = regs->cr_iip; \
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pr_reg[13] = regs->r17 & 0xffff; \
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pr_reg[14] = ia64_getreg(_IA64_REG_AR_EFLAG); \
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pr_reg[15] = regs->r12; \
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pr_reg[16] = (regs->r17 >> 16) & 0xffff;
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static inline void elf_core_copy_regs(elf_gregset_t *elfregs,
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struct pt_regs *regs)
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{
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ELF_CORE_COPY_REGS((*elfregs), regs)
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}
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static inline int elf_core_copy_task_regs(struct task_struct *t,
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elf_gregset_t* elfregs)
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{
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ELF_CORE_COPY_REGS((*elfregs), task_pt_regs(t));
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return 1;
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}
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static inline int
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elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpregset_t *fpu)
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{
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struct ia32_user_i387_struct *fpstate = (void*)fpu;
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mm_segment_t old_fs;
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if (!tsk_used_math(tsk))
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return 0;
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old_fs = get_fs();
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set_fs(KERNEL_DS);
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save_ia32_fpstate(tsk, (struct ia32_user_i387_struct __user *) fpstate);
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set_fs(old_fs);
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return 1;
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}
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#define ELF_CORE_COPY_XFPREGS 1
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#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
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static inline int
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elf_core_copy_task_xfpregs(struct task_struct *tsk, elf_fpxregset_t *xfpu)
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{
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struct ia32_user_fxsr_struct *fpxstate = (void*) xfpu;
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mm_segment_t old_fs;
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if (!tsk_used_math(tsk))
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return 0;
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old_fs = get_fs();
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set_fs(KERNEL_DS);
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save_ia32_fpxstate(tsk, (struct ia32_user_fxsr_struct __user *) fpxstate);
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set_fs(old_fs);
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return 1;
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}
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#endif /* _ELFCORE32_H_ */
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