Ajay Mohan / Rasperf

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Commit a6ea1595c93e483ee7b688d418b13b2653b510c3

Authored by Aravind Kumar
1 parent 8a0f7262a0
Exists in master

Indented stuff for CPU directory

Showing 12 changed files with 58 additions and 31 deletions Side-by-side Diff

cpu/context_switch_process.o View file @ a6ea159

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cpu/loop_overhead_time.c View file @ a6ea159
... ... @@ -12,10 +12,9 @@
12 12 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (time1));
13 13 for (i = 0; i < 1000; i++);
14 14 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (time2));
15   - avg = (time2 - time1 - 5);
  15 + avg = (time2 - time1 - 5); //5 is measurement overhead for mrc
16 16 sum++;
17   - printf("%f,", avg/1000);
18 17 }
19   - printf("%f", avg);
  18 + printf("%f", avg/100);
20 19 }
cpu/loop_overhead_time.o View file @ a6ea159

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cpu/process_creation.c View file @ a6ea159
... ... @@ -16,10 +16,10 @@
16 16 int pid = fork();
17 17 if (pid) {
18 18 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (b));
  19 + // Measure time for creation, kill the child
19 20 kill(pid, SIGKILL);
20 21 wait(NULL);
21   - if ((b - a) < 400000)
22   - printf("%u,", b - a);
  22 + printf("%u,", b - a);
23 23 }
24 24 }
25 25  
cpu/rasperf.h View file @ a6ea159
  1 +
  2 +#ifndef __RASPERF_H__
  3 +#define NULL '\0'
  4 +#define __RASPERF_H__
  5 +#define RTT 35 //in MicroSec
  6 +#define PI 0
  7 +#define x86 1
  8 +#define CPU_CYCLES 900
  9 +#define MHz 1e6
  10 +#if defined(PI) && PI
  11 +#define time unsigned int
  12 +#define getTime(var) \
  13 + asm volatile (\
  14 + "mrc p15, 0, %0, c9, c13, 0":\
  15 + "=r" (var));
  16 +#define readCCNTStatus(var) \
  17 + asm volatile (\
  18 + "mrc p15, 0, %0, c9, c14, 0":\
  19 + "=r" (var));
  20 +#define diff(end, begin) \
  21 + (end - begin)/ CPU_CYCLES};
  22 +#endif
  23 +#if defined(x86) && x86
  24 +#define time struct timeval
  25 +#define getTime(var) gettimeofday(&var, NULL)
  26 +#define diff(end, begin) \
  27 + ((end.tv_sec*1e6+end.tv_usec) - (begin.tv_sec*1e6+ begin.tv_usec))
  28 +#endif
  29 +#endif
cpu/reading_time.c View file @ a6ea159
... ... @@ -13,7 +13,7 @@
13 13 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (a));
14 14 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (b));
15 15 time += b - a;
16   - printf("%d,", b-a);
  16 + //printf("%d,", b-a);
17 17 }
18 18 avg = time / 1000;
19 19 printf("Measurement overhead: %f\n", avg);
cpu/reading_time.o View file @ a6ea159

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cpu/syscall.c View file @ a6ea159
... ... @@ -14,10 +14,6 @@
14 14 i = getpid();
15 15 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (b));
16 16 printf("PID: %u, Time for getpid: %u\n", i, b - a);
17   - asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (a));
18   - time();
19   - asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (b));
20   - printf("PID2: Time for time(): %u\n", b - a);
21 17 return 0;
22 18 }
cpu/syscall.o View file @ a6ea159

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cpu/thd_ctxsw.c View file @ a6ea159
... ... @@ -6,27 +6,30 @@
6 6 #include<stdlib.h>
7 7 #include<signal.h>
8 8 #define STACK_SIZE 4096
  9 +
9 10 int pipe_fd[2], tid1, tid2;
10 11 char buffer[10];
11 12 int reader(void* arg);
12 13 int writer(void* arg);
13   -int controller(void *arg)
  14 +int primary(void *arg)
14 15 {
15   - void *tid1_stack = malloc(STACK_SIZE);
16   - void *tid2_stack = malloc(STACK_SIZE);
17   - tid1 = clone(&writer, tid1_stack+STACK_SIZE, SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
18   - tid2 = clone(&reader, tid2_stack+STACK_SIZE, SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
19   - return 0;
  16 + void *tid1_stack = malloc(STACK_SIZE);
  17 + void *tid2_stack = malloc(STACK_SIZE);
  18 + tid1 = clone(&writer, tid1_stack+STACK_SIZE,
  19 + SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
  20 + tid2 = clone(&reader, tid2_stack+STACK_SIZE,
  21 + SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
  22 + return 0;
20 23 }
21 24 int reader(void* arg)
22 25 {
23   - read(pipe_fd[0], buffer, 1);
24   - return 0;
  26 + read(pipe_fd[0], buffer, 1);
  27 + return 0;
25 28 }
26 29 int writer(void* arg)
27 30 {
28   - write(pipe_fd[1], "a", 1);
29   - return 0;
  31 + write(pipe_fd[1], "a", 1);
  32 + return 0;
30 33 }
31 34 int main(){
32 35  
33 36  
34 37  
... ... @@ -39,16 +42,17 @@
39 42  
40 43 //asm volatile("mrc p15, 0, %0, c9, c14, 0" : "=r" (regr));
41 44 //printf("regr: %x\n", regr);
42   -
  45 +
43 46 //initialize communication pipe
44 47 for (i = 0; i < 1000; i++)
45 48 {
46 49 getTime(start);
47   - thread_pid = clone(&controller, child_stack+STACK_SIZE, SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
  50 + thread_pid = clone(&primary, child_stack+STACK_SIZE,
  51 + SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
48 52 waitpid(thread_pid, 0, 0);
49 53 getTime(end);
50 54 printf("\nTime Taken %d", diff(end,start));
51 55 }
52 56 return 0;
53   -}
  57 +}
cpu/thd_ctxsw.o View file @ a6ea159

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cpu/thread_creation.c View file @ a6ea159
... ... @@ -21,14 +21,12 @@
21 21 asm volatile("mrc p15, 0, %0, c9, c14, 0" : "=r" (regr));
22 22 printf("regr: %x\n", regr);
23 23  
24   -// for (i = 0; i < 1000; i++)
25   -// {
26   - asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (a));
27   - thread_pid = clone(&func, child_stack+STACK_SIZE, SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
28   - asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (b));
29   -// waitpid(thread_pid,0,0);
30   - printf("%u,", b - a);
31   -// }
  24 + asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (a));
  25 + thread_pid = clone(&func, child_stack+STACK_SIZE,
  26 + SIGCHLD|CLONE_SIGHAND|CLONE_FS|CLONE_VM|CLONE_FILES|CLONE_THREAD, NULL);
  27 + asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (b));
  28 + // waitpid(thread_pid,0,0);
  29 + printf("%u,", b - a);
32 30 return 0;
33 31 }