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Added debug messages.

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This commit is contained in:
Naoki Hamada
2014-08-25 16:39:02 +09:00
parent c783ec8e11
commit cb4b00ba97
3 changed files with 60 additions and 8 deletions
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32
kernel/procfs.c
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@@ -26,10 +26,10 @@
#define DEBUG_PRINT_PROCFS
#ifdef DEBUG_PRINT_PROCFS
#define dkprintf kprintf
#ifdef DEBUG_PRINT_SC
#define dprintf(...) kprintf(__VA_ARGS__)
#else
#define dkprintf(...)
#define dprintf(...)
#endif
extern int snprintf(char * buf, size_t size, const char *fmt, ...);
@@ -56,6 +56,7 @@ void create_proc_procfs_files(int pid, int cpuid)
static void create_proc_procfs_file(int pid, char *fname, int mode, int cpuid)
{
dprintf("create procfs file: %s, mode: %s, cpuid: %d\n", fname, mode, cpuid);
operate_proc_procfs_file(pid, fname, SCD_MSG_PROCFS_CREATE, mode, cpuid);
}
@@ -69,6 +70,7 @@ void delete_proc_procfs_files(int pid)
static void delete_proc_procfs_file(int pid, char *fname)
{
dprintf("delete procfs file: %s\n", fname);
operate_proc_procfs_file(pid, fname, SCD_MSG_PROCFS_DELETE, 0, 0);
}
@@ -118,6 +120,8 @@ void process_procfs_request(unsigned long rarg)
char *buf;
struct ihk_ikc_channel_desc *syscall_channel;
dprintf("process_procfs_request: invoked.\n");
syscall_channel = get_cpu_local_var(0)->syscall_channel;
parg = ihk_mc_map_memory(NULL, rarg, sizeof(struct procfs_read));
@@ -127,17 +131,21 @@ void process_procfs_request(unsigned long rarg)
pbuf = ihk_mc_map_memory(NULL, r->pbuf, r->count);
buf = ihk_mc_map_virtual(pbuf, r->count, PTATTR_WRITABLE | PTATTR_ACTIVE);
dprintf("fname:%s, offset: %lx, count:%d.\n", r->fname, r->offset, r->count);
/* mcos0/PID/taks/PID/mem */
ret = sscanf(r->fname, "mcos%d/%d/task/%d/mem", &rosnum, &pid, &tid);
if ((ret == 3) && (pid == tid) && (osnum == rosnum)) {
if (cpu_local_var(current)->pid != pid) {
/* A hit-miss caused by migration */
/* When the target process is no more here.
This kind of hit-misses are caused by migration */
ans = 0;
} else {
struct vm_range *range;
struct process_vm *vm = proc->vm;
ans = -EIO; /* default to an I/O error */
list_for_each_entry(range, &vm->vm_range_list, list) {
dprintf("range: %lx - %lx\n", range->start, range->end);
if ((range->start <= r->offset) &&
(r->offset <= range->end)) {
if (r->offset + r->count <= range->end) {
@@ -153,10 +161,22 @@ void process_procfs_request(unsigned long rarg)
}
}
}
goto skip;
goto end;
}
skip:
/* Processing of other kinds of procfs files should be located here.
Its template is something like what follows:
ret = scanf(r->fname, "mcos%d/PATTERN", ...)
if ((ret == x) && pattern has matched) {
get the data and write it to the buffer;
ans = written bytes;
goto end;
}
*/
end:
dprintf("read: %d, eof: %d\n", ans, eof);
r->ret = ans;
r->eof = eof;
packet.msg = SCD_MSG_PROCFS_ANSWER;