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cpumask: introduce assign_cpu() macro

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Now that assign_bit() is a thin macro wrapper around set_bit() and
clear_bit(), we can use it in cpumask API and drop duplicating
implementations of set_cpu_xxx() helpers with no additional overhead.

Bloat-o-meter reports almost 2k less of generated code for allyesconfig,
mostly in kernel/cpu.c:
	add/remove: 2/4 grow/shrink: 3/4 up/down: 498/-2228 (-1730)

Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
This commit is contained in:
Yury Norov 2024-05-24 11:58:28 -07:00
parent 46d1907d1c
commit 5c563ee90a
1 changed files with 6 additions and 34 deletions
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40
include/linux/cpumask.h
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@ -1083,44 +1083,16 @@ void init_cpu_present(const struct cpumask *src);
void init_cpu_possible(const struct cpumask *src);
void init_cpu_online(const struct cpumask *src);
static inline void
set_cpu_possible(unsigned int cpu, bool possible)
{
if (possible)
cpumask_set_cpu(cpu, &__cpu_possible_mask);
else
cpumask_clear_cpu(cpu, &__cpu_possible_mask);
}
#define assign_cpu(cpu, mask, val) \
assign_bit(cpumask_check(cpu), cpumask_bits(mask), (val))
static inline void
set_cpu_present(unsigned int cpu, bool present)
{
if (present)
cpumask_set_cpu(cpu, &__cpu_present_mask);
else
cpumask_clear_cpu(cpu, &__cpu_present_mask);
}
#define set_cpu_possible(cpu, possible) assign_cpu((cpu), &__cpu_possible_mask, (possible))
#define set_cpu_present(cpu, present) assign_cpu((cpu), &__cpu_present_mask, (present))
#define set_cpu_active(cpu, active) assign_cpu((cpu), &__cpu_active_mask, (active))
#define set_cpu_dying(cpu, dying) assign_cpu((cpu), &__cpu_dying_mask, (dying))
void set_cpu_online(unsigned int cpu, bool online);
static inline void
set_cpu_active(unsigned int cpu, bool active)
{
if (active)
cpumask_set_cpu(cpu, &__cpu_active_mask);
else
cpumask_clear_cpu(cpu, &__cpu_active_mask);
}
static inline void
set_cpu_dying(unsigned int cpu, bool dying)
{
if (dying)
cpumask_set_cpu(cpu, &__cpu_dying_mask);
else
cpumask_clear_cpu(cpu, &__cpu_dying_mask);
}
/**
* to_cpumask - convert a NR_CPUS bitmap to a struct cpumask *
* @bitmap: the bitmap