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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)/* **************************************************************************** * * "DHRYSTONE" Benchmark Program * ----------------------------- * * Version: C, Version 2.1 * * File: dhry_1.c (part 2 of 3) * * Date: May 25, 1988 * * Author: Reinhold P. Weicker * **************************************************************************** */
#include "dhry.h"
#include <linux/ktime.h>#include <linux/slab.h>#include <linux/string.h>
/* Global Variables: */
int Int_Glob;char Ch_1_Glob;
static Rec_Pointer Ptr_Glob, Next_Ptr_Glob;static Boolean Bool_Glob;static char Ch_2_Glob;static int Arr_1_Glob[50];static int Arr_2_Glob[50][50];
static void Proc_3(Rec_Pointer *Ptr_Ref_Par)/******************//* executed once *//* Ptr_Ref_Par becomes Ptr_Glob */{ if (Ptr_Glob) { /* then, executed */ *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp; } Proc_7(10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);} /* Proc_3 */
static void Proc_1(Rec_Pointer Ptr_Val_Par)/******************//* executed once */{ Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp; /* == Ptr_Glob_Next */ /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp, */ /* corresponds to "rename" in Ada, "with" in Pascal */
*Ptr_Val_Par->Ptr_Comp = *Ptr_Glob; Ptr_Val_Par->variant.var_1.Int_Comp = 5; Next_Record->variant.var_1.Int_Comp = Ptr_Val_Par->variant.var_1.Int_Comp; Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp; Proc_3(&Next_Record->Ptr_Comp); /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp == Ptr_Glob->Ptr_Comp */ if (Next_Record->Discr == Ident_1) { /* then, executed */ Next_Record->variant.var_1.Int_Comp = 6; Proc_6(Ptr_Val_Par->variant.var_1.Enum_Comp, &Next_Record->variant.var_1.Enum_Comp); Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp; Proc_7(Next_Record->variant.var_1.Int_Comp, 10, &Next_Record->variant.var_1.Int_Comp); } else { /* not executed */ *Ptr_Val_Par = *Ptr_Val_Par->Ptr_Comp; }} /* Proc_1 */
static void Proc_2(One_Fifty *Int_Par_Ref)/******************//* executed once *//* *Int_Par_Ref == 1, becomes 4 */{ One_Fifty Int_Loc; Enumeration Enum_Loc;
Int_Loc = *Int_Par_Ref + 10; do { /* executed once */ if (Ch_1_Glob == 'A') { /* then, executed */ Int_Loc -= 1; *Int_Par_Ref = Int_Loc - Int_Glob; Enum_Loc = Ident_1; } /* if */ } while (Enum_Loc != Ident_1); /* true */} /* Proc_2 */
static void Proc_4(void)/*******//* executed once */{ Boolean Bool_Loc;
Bool_Loc = Ch_1_Glob == 'A'; Bool_Glob = Bool_Loc | Bool_Glob; Ch_2_Glob = 'B';} /* Proc_4 */
static void Proc_5(void)/*******//* executed once */{ Ch_1_Glob = 'A'; Bool_Glob = false;} /* Proc_5 */
int dhry(int n)/*****/
/* main program, corresponds to procedures */ /* Main and Proc_0 in the Ada version */{ One_Fifty Int_1_Loc; One_Fifty Int_2_Loc; One_Fifty Int_3_Loc; char Ch_Index; Enumeration Enum_Loc; Str_30 Str_1_Loc; Str_30 Str_2_Loc; int Run_Index; int Number_Of_Runs; ktime_t Begin_Time, End_Time; u32 User_Time;
/* Initializations */
Next_Ptr_Glob = (Rec_Pointer) kzalloc_obj(Rec_Type, GFP_ATOMIC); if (!Next_Ptr_Glob) return -ENOMEM;
Ptr_Glob = (Rec_Pointer) kzalloc_obj(Rec_Type, GFP_ATOMIC); if (!Ptr_Glob) { kfree(Next_Ptr_Glob); return -ENOMEM; }
Ptr_Glob->Ptr_Comp = Next_Ptr_Glob; Ptr_Glob->Discr = Ident_1; Ptr_Glob->variant.var_1.Enum_Comp = Ident_3; Ptr_Glob->variant.var_1.Int_Comp = 40; strcpy(Ptr_Glob->variant.var_1.Str_Comp, "DHRYSTONE PROGRAM, SOME STRING"); strcpy(Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");
Arr_2_Glob[8][7] = 10; /* Was missing in published program. Without this statement, */ /* Arr_2_Glob[8][7] would have an undefined value. */ /* Warning: With 16-Bit processors and Number_Of_Runs > 32000, */ /* overflow may occur for this array element. */
pr_debug("Dhrystone Benchmark, Version 2.1 (Language: C)\n");
Number_Of_Runs = n;
pr_debug("Execution starts, %d runs through Dhrystone\n", Number_Of_Runs);
/***************/ /* Start timer */ /***************/
Begin_Time = ktime_get();
for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index) { Proc_5(); Proc_4(); /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */ Int_1_Loc = 2; Int_2_Loc = 3; strcpy(Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING"); Enum_Loc = Ident_2; Bool_Glob = !Func_2(Str_1_Loc, Str_2_Loc); /* Bool_Glob == 1 */ while (Int_1_Loc < Int_2_Loc) { /* loop body executed once */ Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc; /* Int_3_Loc == 7 */ Proc_7(Int_1_Loc, Int_2_Loc, &Int_3_Loc); /* Int_3_Loc == 7 */ Int_1_Loc += 1; } /* while */ /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */ Proc_8(Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc); /* Int_Glob == 5 */ Proc_1(Ptr_Glob); for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index) { /* loop body executed twice */ if (Enum_Loc == Func_1(Ch_Index, 'C')) { /* then, not executed */ Proc_6(Ident_1, &Enum_Loc); strcpy(Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING"); Int_2_Loc = Run_Index; Int_Glob = Run_Index; } } /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */ Int_2_Loc = Int_2_Loc * Int_1_Loc; Int_1_Loc = Int_2_Loc / Int_3_Loc; Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc; /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */ Proc_2(&Int_1_Loc); /* Int_1_Loc == 5 */
} /* loop "for Run_Index" */
/**************/ /* Stop timer */ /**************/
End_Time = ktime_get();
#define dhry_assert_int_eq(val, expected) \ if (val != expected) \ pr_err("%s: %d (FAIL, expected %d)\n", #val, val, \ expected); \ else \ pr_debug("%s: %d (OK)\n", #val, val)
#define dhry_assert_char_eq(val, expected) \ if (val != expected) \ pr_err("%s: %c (FAIL, expected %c)\n", #val, val, \ expected); \ else \ pr_debug("%s: %c (OK)\n", #val, val)
#define dhry_assert_string_eq(val, expected) \ if (strcmp(val, expected)) \ pr_err("%s: %s (FAIL, expected %s)\n", #val, val, \ expected); \ else \ pr_debug("%s: %s (OK)\n", #val, val)
pr_debug("Execution ends\n"); pr_debug("Final values of the variables used in the benchmark:\n"); dhry_assert_int_eq(Int_Glob, 5); dhry_assert_int_eq(Bool_Glob, 1); dhry_assert_char_eq(Ch_1_Glob, 'A'); dhry_assert_char_eq(Ch_2_Glob, 'B'); dhry_assert_int_eq(Arr_1_Glob[8], 7); dhry_assert_int_eq(Arr_2_Glob[8][7], Number_Of_Runs + 10); pr_debug("Ptr_Comp: %px\n", Ptr_Glob->Ptr_Comp); dhry_assert_int_eq(Ptr_Glob->Discr, 0); dhry_assert_int_eq(Ptr_Glob->variant.var_1.Enum_Comp, 2); dhry_assert_int_eq(Ptr_Glob->variant.var_1.Int_Comp, 17); dhry_assert_string_eq(Ptr_Glob->variant.var_1.Str_Comp, "DHRYSTONE PROGRAM, SOME STRING"); if (Next_Ptr_Glob->Ptr_Comp != Ptr_Glob->Ptr_Comp) pr_err("Next_Ptr_Glob->Ptr_Comp: %px (expected %px)\n", Next_Ptr_Glob->Ptr_Comp, Ptr_Glob->Ptr_Comp); else pr_debug("Next_Ptr_Glob->Ptr_Comp: %px\n", Next_Ptr_Glob->Ptr_Comp); dhry_assert_int_eq(Next_Ptr_Glob->Discr, 0); dhry_assert_int_eq(Next_Ptr_Glob->variant.var_1.Enum_Comp, 1); dhry_assert_int_eq(Next_Ptr_Glob->variant.var_1.Int_Comp, 18); dhry_assert_string_eq(Next_Ptr_Glob->variant.var_1.Str_Comp, "DHRYSTONE PROGRAM, SOME STRING"); dhry_assert_int_eq(Int_1_Loc, 5); dhry_assert_int_eq(Int_2_Loc, 13); dhry_assert_int_eq(Int_3_Loc, 7); dhry_assert_int_eq(Enum_Loc, 1); dhry_assert_string_eq(Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING"); dhry_assert_string_eq(Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
User_Time = ktime_ms_delta(End_Time, Begin_Time);
kfree(Ptr_Glob); kfree(Next_Ptr_Glob);
/* Measurements should last at least 2 seconds */ if (User_Time < 2 * MSEC_PER_SEC) return -EAGAIN;
return div_u64(mul_u32_u32(MSEC_PER_SEC, Number_Of_Runs), User_Time);}