mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-12 13:55:32 +00:00
Code Issues Releases Wiki Activity

Power management fixes for v4.6-rc6

Browse source 
- Revert cpufreq commit that attempted to fix a problem in the
    ondemand/conservative governor code, but did that incorrectly
    and introduced another problem instead (Rafael Wysocki).
 
  - Fix incorrect decoding of MSR contents related to the
    Turbo Activation Ratio (TAR) handling in the intel_pstate
    driver (Srinivas Pandruvada).
 
 /
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABCAAGBQJXI1WqAAoJEILEb/54YlRxXW8P/0D+1fn2EWJFVzXqOYjEsmH1
 i8kpfmXHqO2LLt+njPDnpqTMCShOHlLOTJquPt98A5LM8/4Jkk6SDt2A9LKMENrG
 boKWm/U2uFjT2dFdfpsETzM6zENyukb0cpOwxRlz1X81buOwXmEVGvJnKJrLQbT3
 bOLzKRXsT7NPeMeeqOtsUy7kq+17N2dErPzppzHQqlx+510FXGsgC+WibQwtpKVm
 KCPkb0KBTvuYtjPqMfv9LrFAyBIQn9V4sJePtjJbx3lMbCKC2IFZ3O97Fp/UIgOd
 FTkgsvJr+jTogvhqHCxeIBXclySLWpIGNiIO69oWxHjy+Mh6RK+nObE0mW17GAc3
 QxpQSz03ZNbLU4iWQIQ/jAGBp4w/FDxnZ/gVX43T1183ooEIP+/baAdfkb+e5dbJ
 WPoKuWPNrqi6W1lsJ9dLzEUemN14pAyGWF3KGmO0Czj6tGlq5LwUc6UO6+q92j4m
 5lsZkL+fAQOVywhbc9pZ+PylSL9fi4VASg1Pmn4W+0fYGoM6O4NdaY3vIz9L5wgF
 NS+LIOv66YHvAIdLfrWVZcQX0vEM1EmOA0lO4+h9/1G7ZVe42JS0iUPqciX64l3p
 M2703pYq3Jdcy1IL1x905HdJA8dv6yjlgudqj0gOMGsPtNCcN3TOQyK/x+ffhCex
 /Ei1Zx5QN5GQar00HTfu
 =ES0b
 -----END PGP SIGNATURE-----

Merge tag 'pm+acpi-4.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "One revert of a recent cpufreq commit that introduced a regression and
  a fix for intel_pstate's Turbo Activation Ratio handling code.

  Specifics:

   - Revert cpufreq commit that attempted to fix a problem in the
     ondemand/conservative governor code, but did that incorrectly and
     introduced another problem instead (Rafael Wysocki).

   - Fix incorrect decoding of MSR contents related to the Turbo
     Activation Ratio (TAR) handling in the intel_pstate driver
     (Srinivas Pandruvada)"

* tag 'pm+acpi-4.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Fix processing for turbo activation ratio
  Revert "cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC"
This commit is contained in:
Linus Torvalds 2016-04-29 17:39:51 -07:00
commit b49a5195e2
2 changed files with 7 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/cpufreq/cpufreq_governor.c
View file

@ -193,12 +193,8 @@ unsigned int dbs_update(struct cpufreq_policy *policy)
wall_time = cur_wall_time - j_cdbs->prev_cpu_wall;
j_cdbs->prev_cpu_wall = cur_wall_time;
if (cur_idle_time <= j_cdbs->prev_cpu_idle) {
idle_time = 0;
} else {
idle_time = cur_idle_time - j_cdbs->prev_cpu_idle;
j_cdbs->prev_cpu_idle = cur_idle_time;
}
idle_time = cur_idle_time - j_cdbs->prev_cpu_idle;
j_cdbs->prev_cpu_idle = cur_idle_time;
if (ignore_nice) {
u64 cur_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];

5
drivers/cpufreq/intel_pstate.c
View file

@ -813,6 +813,11 @@ static int core_get_max_pstate(void)
if (err)
goto skip_tar;
/* For level 1 and 2, bits[23:16] contain the ratio */
if (tdp_ctrl)
tdp_ratio >>= 16;
tdp_ratio &= 0xff; /* ratios are only 8 bits long */
if (tdp_ratio - 1 == tar) {
max_pstate = tar;
pr_debug("max_pstate=TAC %x\n", max_pstate);