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32eb645332
linux/drivers/cpufreq
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Christophe JAILLET 32eb645332 cpufreq: tegra186: Use flexible array to simplify memory allocation 
Use flexible array to simplify memory allocation.
It saves some memory, avoids an indirection when reading the 'clusters'
array and removes some LoC.

Detailed explanation:
====================
Knowing that:
  - each devm_ allocation over-allocates 40 bytes for internal needs
  - Some rounding is done by the memory allocator on 8, 16, 32, 64, 96,
    128, 192, 256, 512, 1024, 2048, 4096, 8192 boundaries

and that:
  - sizeof(struct tegra186_cpufreq_data) = 24
  - sizeof(struct tegra186_cpufreq_cluster) = 16

Memory allocations in tegra186_cpufreq_probe() are:
  data:           (24 + 40) = 64 		      => 64 bytes
  data->clusters: (2 * 16 + 40) = 72     => 96 bytes
So a total of 160 bytes are allocated.
56 for the real need, 80 for internal uses and 24 are wasted.

If 'struct tegra186_cpufreq_data' is reordered so that 'clusters' is a
flexible array:
  - it saves one pointer in the structure
  - only one allocation is needed

So, only 96 bytes are allocated:
  16 + 2 * 16 + 40 = 88  => 96 bytes

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2022-12-01 14:49:50 +05:30
..
acpi-cpufreq.c cpufreq: ACPI: Add Zhaoxin/Centaur turbo boost control interface support 2022-06-29 20:14:39 +02:00
amd_freq_sensitivity.c cpufreq: Introducing CPUFREQ_RELATION_E 2021-10-05 16:33:05 +02:00
amd-pstate-trace.c cpufreq: amd-pstate: Add trace for AMD P-State module 2021-12-30 18:51:39 +01:00
amd-pstate-trace.h cpufreq: amd-pstate: Add more tracepoint for AMD P-State module 2022-03-09 19:53:01 +01:00
amd-pstate-ut.c cpufreq: amd-pstate: modify type in argument 2 for filp_open 2022-10-05 11:05:18 -06:00
amd-pstate.c linux-kselftest-next-6.1-rc1 2022-10-06 12:53:15 -07:00
apple-soc-cpufreq.c cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states 2022-11-30 11:12:18 +05:30
armada-8k-cpufreq.c cpufreq: ap806: Add missing MODULE_DEVICE_TABLE 2020-12-07 13:02:37 +05:30
armada-37xx-cpufreq.c cpufreq: armada-37xx: forbid cpufreq for 1.2 GHz variant 2021-08-09 09:31:22 +05:30
bmips-cpufreq.c cpufreq: bmips-cpufreq: Use module_init and add module_exit 2022-08-30 13:49:23 +05:30
brcmstb-avs-cpufreq.c cpufreq: brcmstb-avs-cpufreq: Fix resource leaks in ->remove() 2021-01-18 12:23:43 +05:30
cppc_cpufreq.c ACPI: CPPC: Disable FIE if registers in PCC regions 2022-09-24 18:43:46 +02:00
cpufreq_conservative.c cpufreq: unify show() and store() naming and use __ATTR_XX 2022-03-10 19:55:05 +01:00
cpufreq_governor_attr_set.c cpufreq: Move to_gov_attr_set() to cpufreq.h 2022-02-04 19:22:34 +01:00
cpufreq_governor.c cpufreq: governor: Use kobject release() method to free dbs_data 2022-04-13 15:22:41 +02:00
cpufreq_governor.h cpufreq: governor: Use kobject release() method to free dbs_data 2022-04-13 15:22:41 +02:00
cpufreq_ondemand.c cpufreq: ondemand: Use cpumask_var_t for on-stack cpu mask 2022-07-25 20:38:01 +02:00
cpufreq_ondemand.h
cpufreq_performance.c cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET 2020-11-10 18:31:17 +01:00
cpufreq_powersave.c cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET 2020-11-10 18:31:17 +01:00
cpufreq_stats.c cpufreq: stats: Clean up local variable in cpufreq_stats_create_table() 2021-06-07 13:47:57 +02:00
cpufreq_userspace.c
cpufreq-dt-platdev.c cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states 2022-11-30 11:12:18 +05:30
cpufreq-dt.c cpufreq: dt: Switch to use dev_err_probe() helper 2022-10-18 16:22:25 +05:30
cpufreq-dt.h
cpufreq-nforce2.c
cpufreq.c cpufreq: check only freq_table in __resolve_freq() 2022-08-23 20:00:52 +02:00
davinci-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
e_powersaver.c
elanfreq.c
freq_table.c cpufreq: Fix scaling_{available,boost}_frequencies_show() comments 2021-03-26 17:43:48 +01:00
gx-suspmod.c
highbank-cpufreq.c cpufreq: Add __init annotation to module init funcs 2022-09-26 11:15:04 +05:30
ia64-acpi-cpufreq.c ia64: fix format string for ia64-acpi-cpu-freq 2021-03-19 17:26:20 +01:00
imx6q-cpufreq.c cpufreq: imx6q: Switch to use dev_err_probe() helper 2022-10-18 16:22:25 +05:30
imx-cpufreq-dt.c OPP: Migrate set-supported-hw API to use set-config helpers 2022-07-08 11:27:48 +05:30
intel_pstate.c cpufreq: intel_pstate: hybrid: Use known scaling factor for P-cores 2022-10-25 15:09:23 +02:00
Kconfig cpufreq: loongson2: fix Kconfig "its" grammar 2022-07-25 20:34:56 +02:00
Kconfig.arm cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states 2022-11-30 11:12:18 +05:30
Kconfig.powerpc
Kconfig.x86 cpufreq: amd-pstate: Add explanation for X86_AMD_PSTATE_UT 2022-10-05 11:05:18 -06:00
kirkwood-cpufreq.c
longhaul.c cpufreq: longhaul: Replace acpi_bus_get_device() 2022-02-04 19:31:49 +01:00
longhaul.h
longrun.c
loongson1-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
loongson2_cpufreq.c cpufreq: loongson2: Remove unused linux/sched.h headers 2021-06-07 17:43:52 +02:00
Makefile cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states 2022-11-30 11:12:18 +05:30
maple-cpufreq.c
mediatek-cpufreq-hw.c cpufreq: Generalize of_perf_domain_get_sharing_cpumask phandle format 2022-11-02 10:30:31 +05:30
mediatek-cpufreq.c cpufreq: mediatek: fix error return code in mtk_cpu_dvfs_info_init() 2022-07-13 16:53:00 +05:30
mvebu-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
omap-cpufreq.c cpufreq: omap: Use .register_em() to register with energy model 2021-08-12 09:54:07 +05:30
p4-clockmod.c
pasemi-cpufreq.c cpufreq: Prepare cleanup of powerpc's asm/prom.h 2022-04-13 17:18:45 +02:00
pcc-cpufreq.c
pmac32-cpufreq.c cpufreq: pmac32-cpufreq: Fix refcount leak bug 2022-06-28 13:34:51 +05:30
pmac64-cpufreq.c cpufreq: Prepare cleanup of powerpc's asm/prom.h 2022-04-13 17:18:45 +02:00
powernow-k6.c
powernow-k7.c
powernow-k7.h
powernow-k8.c cpufreq: powernow-k8: Re-order the init checks 2022-03-17 14:54:11 +01:00
powernow-k8.h
powernv-cpufreq.c cpufreq: Introducing CPUFREQ_RELATION_E 2021-10-05 16:33:05 +02:00
ppc_cbe_cpufreq_pervasive.c
ppc_cbe_cpufreq_pmi.c cpufreq: Prepare cleanup of powerpc's asm/prom.h 2022-04-13 17:18:45 +02:00
ppc_cbe_cpufreq.c cpufreq: Prepare cleanup of powerpc's asm/prom.h 2022-04-13 17:18:45 +02:00
ppc_cbe_cpufreq.h
pxa2xx-cpufreq.c cpufreq: pxa3: move clk register access to clk driver 2022-05-07 22:55:49 +02:00
pxa3xx-cpufreq.c cpufreq: pxa3: move clk register access to clk driver 2022-05-07 22:55:49 +02:00
qcom-cpufreq-hw.c cpufreq: qcom-hw: Add CPU clock provider support 2022-11-24 10:15:48 +05:30
qcom-cpufreq-nvmem.c cpufreq: qcom-nvmem: Switch to use dev_err_probe() helper 2022-10-18 16:22:26 +05:30
qoriq-cpufreq.c drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c 2022-06-28 13:34:45 +05:30
raspberrypi-cpufreq.c
s3c24xx-cpufreq-debugfs.c
s3c24xx-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
s3c64xx-cpufreq.c
s3c2410-cpufreq.c
s3c2412-cpufreq.c
s3c2416-cpufreq.c
s3c2440-cpufreq.c cpufreq: s3c244x: add fallthrough comments for switch 2021-10-04 11:43:14 +05:30
s5pv210-cpufreq.c cpufreq: Introducing CPUFREQ_RELATION_E 2021-10-05 16:33:05 +02:00
sa1100-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
sa1110-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
sc520_freq.c cpufreq: sc520_freq: add 'fallthrough' to one case 2021-05-21 18:52:13 +02:00
scmi-cpufreq.c cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1 2022-07-15 19:17:30 +02:00
scpi-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE 2022-06-10 14:51:36 +02:00
sh-cpufreq.c cpufreq: sh: Remove sh_cpufreq_cpu_ready() 2021-09-02 18:04:17 +02:00
sparc-us2e-cpufreq.c
sparc-us3-cpufreq.c
spear-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
speedstep-centrino.c
speedstep-ich.c
speedstep-lib.c cpufreq: speedstep: remove unneeded semicolon 2020-10-28 18:04:07 +01:00
speedstep-lib.h
speedstep-smi.c
sti-cpufreq.c cpufreq: Add __init annotation to module init funcs 2022-09-26 11:15:04 +05:30
sun50i-cpufreq-nvmem.c cpufreq: sun50i: Switch to use dev_err_probe() helper 2022-10-18 16:22:26 +05:30
tegra20-cpufreq.c OPP: Migrate set-supported-hw API to use set-config helpers 2022-07-08 11:27:48 +05:30
tegra124-cpufreq.c
tegra186-cpufreq.c cpufreq: tegra186: Use flexible array to simplify memory allocation 2022-12-01 14:49:50 +05:30
tegra194-cpufreq.c cpufreq: tegra194: Fix module loading 2022-10-18 16:22:25 +05:30
ti-cpufreq.c cpufreq: ti-cpufreq: Add support for AM625 2022-11-07 15:30:11 +05:30
vexpress-spc-cpufreq.c cpufreq: vexpress: Drop unused variable 2021-10-04 11:25:21 +05:30