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powerpc/pseries: Always inline functions called from cpuidle 

Code in the idle path is not allowed to be instrumented because RCU is
disabled, see commit 0e985e9d22 ("cpuidle: Add comments about
noinstr/__cpuidle usage").

Force inlining of the inline functions called from cpuidle, to ensure
they are not emitted out-of-line and then available for tracing.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230406144535.3786008-4-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2023-04-07 00:45:35 +10:00
parent 88990745c9
commit 18b5e7170a
1 changed files with 6 additions and 6 deletions
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12
arch/powerpc/include/asm/idle.h
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@ -9,17 +9,17 @@ DECLARE_PER_CPU(u64, idle_spurr_cycles);
DECLARE_PER_CPU(u64, idle_entry_purr_snap);
DECLARE_PER_CPU(u64, idle_entry_spurr_snap);
static inline void snapshot_purr_idle_entry(void)
static __always_inline void snapshot_purr_idle_entry(void)
{
*this_cpu_ptr(&idle_entry_purr_snap) = mfspr(SPRN_PURR);
}
static inline void snapshot_spurr_idle_entry(void)
static __always_inline void snapshot_spurr_idle_entry(void)
{
*this_cpu_ptr(&idle_entry_spurr_snap) = mfspr(SPRN_SPURR);
}
static inline void update_idle_purr_accounting(void)
static __always_inline void update_idle_purr_accounting(void)
{
u64 wait_cycles;
u64 in_purr = *this_cpu_ptr(&idle_entry_purr_snap);
@ -29,7 +29,7 @@ static inline void update_idle_purr_accounting(void)
get_lppaca()->wait_state_cycles = cpu_to_be64(wait_cycles);
}
static inline void update_idle_spurr_accounting(void)
static __always_inline void update_idle_spurr_accounting(void)
{
u64 *idle_spurr_cycles_ptr = this_cpu_ptr(&idle_spurr_cycles);
u64 in_spurr = *this_cpu_ptr(&idle_entry_spurr_snap);
@ -37,7 +37,7 @@ static inline void update_idle_spurr_accounting(void)
*idle_spurr_cycles_ptr += mfspr(SPRN_SPURR) - in_spurr;
}
static inline void pseries_idle_prolog(void)
static __always_inline void pseries_idle_prolog(void)
{
ppc64_runlatch_off();
snapshot_purr_idle_entry();
@ -49,7 +49,7 @@ static inline void pseries_idle_prolog(void)
get_lppaca()->idle = 1;
}
static inline void pseries_idle_epilog(void)
static __always_inline void pseries_idle_epilog(void)
{
update_idle_purr_accounting();
update_idle_spurr_accounting();