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cyclic: use a flag in gd->flags for recursion protection

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As a preparation for future patches, use a flag in gd->flags rather
than a separate member in (the singleton) struct cyclic_drv to keep
track of whether we're already inside cyclic_run().

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Tim Harvey <tharvey@gateworks.com> # imx8mm-venice-*
This commit is contained in:
Rasmus Villemoes 2022-10-28 13:50:50 +02:00 • committed by Stefan Roese
parent c8d9ff634f
commit d7de5ef629
3 changed files with 7 additions and 5 deletions
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6
common/cyclic.c
View file

@ -66,10 +66,10 @@ void cyclic_run(void)
uint64_t now, cpu_time;
/* Prevent recursion */
if (gd->cyclic->cyclic_running)
if (gd->flags & GD_FLG_CYCLIC_RUNNING)
return;
gd->cyclic->cyclic_running = true;
gd->flags |= GD_FLG_CYCLIC_RUNNING;
list_for_each_entry_safe(cyclic, tmp, &gd->cyclic->cyclic_list, list) {
/*
* Check if this cyclic function needs to get called, e.g.
@ -99,7 +99,7 @@ void cyclic_run(void)
}
}
}
gd->cyclic->cyclic_running = false;
gd->flags &= ~GD_FLG_CYCLIC_RUNNING;
}
void schedule(void)

4
include/asm-generic/global_data.h
View file

@ -650,6 +650,10 @@ enum gd_flags {
* @GD_FLG_FDT_CHANGED: Device tree change has been detected by tests
*/
GD_FLG_FDT_CHANGED = 0x100000,
/**
* GD_FLG_CYCLIC_RUNNING: cyclic_run is in progress
*/
GD_FLG_CYCLIC_RUNNING = 0x200000,
};
#endif /* __ASSEMBLY__ */

2
include/cyclic.h
View file

@ -19,12 +19,10 @@
*
* @cyclic_list: Cylic list node
* @cyclic_ready: Flag if cyclic infrastructure is ready
* @cyclic_running: Flag if cyclic infrastructure is running
*/
struct cyclic_drv {
struct list_head cyclic_list;
bool cyclic_ready;
bool cyclic_running;
};
/**