Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'thermal-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control update from Rafael Wysocki:
"Remove some dead code from the Intel powerclamp thermal control driver
(Srinivas Pandruvada)"
* tag 'thermal-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: intel: powerclamp: Remove dead code for target mwait value
-32
-32
drivers/thermal/intel/intel_powerclamp.c
-32
drivers/thermal/intel/intel_powerclamp.c
···
49
49
*/
50
50
#define DEFAULT_DURATION_JIFFIES (6)
51
51
52
-
static unsigned int target_mwait;
53
52
static struct dentry *debug_dir;
54
53
static bool poll_pkg_cstate_enable;
55
54
···
310
311
"\tpowerclamp controls idle ratio within this window. larger\n"
311
312
"\twindow size results in slower response time but more smooth\n"
312
313
"\tclamping results. default to 2.");
313
-
314
-
static void find_target_mwait(void)
315
-
{
316
-
unsigned int eax, ebx, ecx, edx;
317
-
unsigned int highest_cstate = 0;
318
-
unsigned int highest_subcstate = 0;
319
-
int i;
320
-
321
-
if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF)
322
-
return;
323
-
324
-
cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx);
325
-
326
-
if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) ||
327
-
!(ecx & CPUID5_ECX_INTERRUPT_BREAK))
328
-
return;
329
-
330
-
edx >>= MWAIT_SUBSTATE_SIZE;
331
-
for (i = 0; i < 7 && edx; i++, edx >>= MWAIT_SUBSTATE_SIZE) {
332
-
if (edx & MWAIT_SUBSTATE_MASK) {
333
-
highest_cstate = i;
334
-
highest_subcstate = edx & MWAIT_SUBSTATE_MASK;
335
-
}
336
-
}
337
-
target_mwait = (highest_cstate << MWAIT_SUBSTATE_SIZE) |
338
-
(highest_subcstate - 1);
339
-
340
-
}
341
314
342
315
struct pkg_cstate_info {
343
316
bool skip;
···
729
758
pr_info("No package C-state available\n");
730
759
return -ENODEV;
731
760
}
732
-
733
-
/* find the deepest mwait value */
734
-
find_target_mwait();
735
761
736
762
return 0;
737
763
}