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db0d32d840
linux/drivers/cpufreq
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John Hubbard db0d32d840 cpufreq: powernv: fix stack bloat and hard limit on number of CPUs 
The following build warning occurred on powerpc 64-bit builds:

drivers/cpufreq/powernv-cpufreq.c: In function 'init_chip_info':
drivers/cpufreq/powernv-cpufreq.c:1070:1: warning: the frame size of
1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]

This is with a cross-compiler based on gcc 8.1.0, which I got from:
  https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/

The warning is due to putting 1024 bytes on the stack:

    unsigned int chip[256];

...and it's also undesirable to have a hard limit on the number of
CPUs here.

Fix both problems by dynamically allocating based on num_possible_cpus,
as recommended by Michael Ellerman.

Fixes: 053819e0bf ("cpufreq: powernv: Handle throttling due to Pmax capping at chip level")
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.10+ <stable@vger.kernel.org> # 4.10+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-11-04 11:47:47 +01:00
..
acpi-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
amd_freq_sensitivity.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
arm_big_little.c cpufreq: arm_big_little: Register an Energy Model 2019-02-07 09:55:11 +05:30
arm_big_little.h cpufreq: arm_big_little: make function arguments and structure pointer const 2017-11-08 23:22:19 +01:00
armada-8k-cpufreq.c cpufreq: ap806: Add NULL check after kcalloc 2019-07-22 11:12:15 +05:30
armada-37xx-cpufreq.c cpufreq: armada-37xx: Remove set but not used variable 'freq' 2019-06-03 11:26:38 +05:30
bmips-cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
brcmstb-avs-cpufreq.c cpufreq: brcmstb-avs-cpufreq: Fix types for voltage/frequency 2019-06-04 09:31:41 +05:30
cppc_cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
cpufreq_conservative.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_governor_attr_set.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_governor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_governor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_ondemand.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_ondemand.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_performance.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_powersave.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_stats.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_userspace.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq-dt-platdev.c Merge branch 'cpufreq/qcom-updates' into cpufreq/arm/linux-next 2019-09-03 07:55:22 +05:30
cpufreq-dt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq-dt.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq-nforce2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
cpufreq.c cpufreq: Clarify the comment in cpufreq_set_policy() 2019-11-04 11:44:26 +01:00
davinci-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
e_powersaver.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
elanfreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
freq_table.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gx-suspmod.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
highbank-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ia64-acpi-cpufreq.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
imx6q-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
imx-cpufreq-dt.c cpufreq: imx-cpufreq-dt: Add i.MX8MN support 2019-08-22 11:31:04 +05:30
intel_pstate.c cpufreq: Use per-policy frequency QoS 2019-10-21 02:05:21 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.arm Merge branch 'cpufreq/qcom-updates' into cpufreq/arm/linux-next 2019-09-03 07:55:22 +05:30
Kconfig.powerpc treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.x86 treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
kirkwood-cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
longhaul.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
longhaul.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
longrun.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
loongson1-cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
loongson2_cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
Makefile Merge branch 'cpufreq/qcom-updates' into cpufreq/arm/linux-next 2019-09-03 07:55:22 +05:30
maple-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
mediatek-cpufreq.c cpufreq: mediatek: Add support for mt8183 2019-08-22 11:31:04 +05:30
mvebu-cpufreq.c cpufreq: mvebu: Remove OPPs using dev_pm_opp_remove() 2018-09-19 14:56:44 -07:00
omap-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
p4-clockmod.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pasemi-cpufreq.c cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init() 2019-07-23 09:49:10 +02:00
pcc-cpufreq.c cpufreq: pcc-cpufreq: Fail initialization if driver cannot be registered 2019-06-17 12:25:30 +02:00
pmac32-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
pmac64-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
powernow-k6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
powernow-k7.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
powernow-k7.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
powernow-k8.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
powernow-k8.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 347 2019-06-05 17:37:08 +02:00
powernv-cpufreq.c cpufreq: powernv: fix stack bloat and hard limit on number of CPUs 2019-11-04 11:47:47 +01:00
ppc_cbe_cpufreq_pervasive.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
ppc_cbe_cpufreq_pmi.c cpufreq: Use per-policy frequency QoS 2019-10-21 02:05:21 +02:00
ppc_cbe_cpufreq.c cpufreq: powerpc_cbe: Switch to QoS requests for freq limits 2019-08-26 10:02:01 +02:00
ppc_cbe_cpufreq.h cpufreq: powerpc_cbe: Switch to QoS requests for freq limits 2019-08-26 10:02:01 +02:00
pxa2xx-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pxa3xx-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
qcom-cpufreq-hw.c cpufreq: qcom-hw: invoke frequency-invariance setter function 2019-08-22 11:31:04 +05:30
qcom-cpufreq-nvmem.c cpufreq: qcom: Add support for qcs404 on nvmem driver 2019-09-03 07:55:00 +05:30
qoriq-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
raspberrypi-cpufreq.c cpufreq: add driver for Raspberry Pi 2019-06-13 08:58:22 +05:30
s3c24xx-cpufreq-debugfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
s3c24xx-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
s3c64xx-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
s3c2410-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
s3c2412-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
s3c2416-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
s3c2440-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
s5pv210-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
sa1100-cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
sa1110-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
sc520_freq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
scmi-cpufreq.c Merge branch 'pm-opp' 2019-03-04 11:19:14 +01:00
scpi-cpufreq.c cpufreq: scpi: Fix use after free 2019-03-28 11:14:31 +01:00
sfi-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235 2019-06-19 17:09:07 +02:00
sh-cpufreq.c cpufreq: sh: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
sparc-us2e-cpufreq.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
sparc-us3-cpufreq.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
spear-cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
speedstep-centrino.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
speedstep-ich.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
speedstep-lib.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
speedstep-lib.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
speedstep-smi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
sti-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 312 2019-06-05 17:37:04 +02:00
sun50i-cpufreq-nvmem.c cpufreq: Add sun50i nvmem based CPU scaling driver 2019-07-22 11:10:51 +05:30
tango-cpufreq.c cpufreq: dt: Don't use generic platdev driver for tango 2017-07-22 02:20:59 +02:00
tegra20-cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
tegra124-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
tegra186-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
ti-cpufreq.c cpufreq: ti-cpufreq: Mark expected switch fall-through 2019-07-30 08:10:45 +05:30
unicore2-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
vexpress-spc-cpufreq.c cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const 2017-11-08 23:22:20 +01:00