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/*
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gem-objects.h"
#include "debugfs.h"
/* /sys/kernel/debug/dri/0/i915_gem_objects:
* 46 objects, 20107264 bytes
* 42 [42] objects, 15863808 [15863808] bytes in gtt
* 0 [0] active objects, 0 [0] bytes
* 42 [42] inactive objects, 15863808 [15863808] bytes
* 0 unbound objects, 0 bytes
* 3 purgeable objects, 4456448 bytes
* 30 pinned mappable objects, 3821568 bytes
* 1 fault mappable objects, 3145728 bytes
* 2145386496 [536870912] gtt total
*
* Xorg: 35 objects, 16347136 bytes (0 active, 12103680 inactive, 0 unbound)
*/
int gem_objects_init(struct gem_objects *obj)
{
char buf[8192], *b;
int fd, len;
memset(obj, 0, sizeof(*obj));
sprintf(buf, "%s/i915_gem_objects", debugfs_dri_path);
fd = open(buf, 0);
if (fd < 0)
return errno;
len = read(fd, buf+1, sizeof(buf)-2);
close(fd);
if (len < 0)
return EIO;
/* Add sentinel values for the string searches */
buf[0] = '\n';
buf[len+1] = '\0';
b = strstr(buf, "gtt total");
if (b == NULL)
return EIO;
while (*b != '\n')
b--;
sscanf(b, "%ld [%ld]",
&obj->max_gtt, &obj->max_aperture);
return 0;
}
static void insert_sorted(struct gem_objects *obj,
struct gem_objects_comm *comm)
{
struct gem_objects_comm *next, **prev;
for (prev = &obj->comm; (next = *prev) != NULL; prev = &next->next)
if (comm->bytes > next->bytes)
break;
comm->next = *prev;
*prev = comm;
}
int gem_objects_update(struct gem_objects *obj)
{
char buf[8192], *b;
struct gem_objects_comm *comm;
struct gem_objects_comm *freed;
int fd, len, ret;
freed = obj->comm;
obj->comm = NULL;
sprintf(buf, "%s/i915_gem_objects", debugfs_dri_path);
fd = open(buf, 0);
if (fd < 0) {
ret = errno;
goto done;
}
len = read(fd, buf, sizeof(buf)-1);
close(fd);
if (len < 0) {
ret = EIO;
goto done;
}
buf[len] = '\0';
while (buf[--len] == '\n')
buf[len] = '\0';
b = buf;
sscanf(b, "%lu objects, %lu bytes",
&obj->total_count, &obj->total_bytes);
b = strchr(b, '\n');
sscanf(b, "%*d [%*d] objects, %lu [%lu] bytes in gtt",
&obj->total_gtt, &obj->total_aperture);
ret = 0;
b = strchr(b, ':');
if (b == NULL)
goto done;
while (*b != '\n')
b--;
b++;
do {
char *eol, *colon;
comm = freed;
if (comm)
freed = comm->next;
else
comm = malloc(sizeof(*comm));
if (comm == NULL)
break;
/* Xorg: 35 objects, 16347136 bytes (0 active, 12103680 inactive, 0 unbound) */
eol = strchr(b, '\n');
if (eol) {
do {
*eol++ = '\0';
} while (*eol == '\n');
}
colon = strchr(b, ':');
if (!colon) { /* out of buffer space */
free(comm);
break;
}
memcpy(comm->name, b, colon-b+1);
comm->name[colon-b+1] = '\0';
sscanf(colon + 1, "%lu objects, %lu bytes",
&comm->count, &comm->bytes);
insert_sorted(obj, comm);
b = eol;
} while (b != NULL);
done:
while (freed) {
comm = freed;
freed = comm->next;
free(comm);
}
return ret;
}
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