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Rename MAX_BUDGET to MAX_PERIOD

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As this variable bounds both the period and the budget and the period
itself bounds the budget, the name for this variable would be more
appropriately named 'MAX_PERIOD'

Signed-off-by: Curtis Millar <curtis.millar@data61.csiro.au>
This commit is contained in:
Curtis Millar 2021-02-02 10:01:21 +11:00 committed by Curtis Millar
parent f2c96c3246
commit 295a5b2818
6 changed files with 12 additions and 11 deletions
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1
CHANGES
View file

@ -30,6 +30,7 @@ Upcoming release: BREAKING
- Constant bandwidth observes a continuous constant bandwidth of budget/period
- Sporadic server behaves as described by Sprunt et. al.
- In an overcommitted system, sporadic preserves accumulated time
* MCS kernel configuration option KernelStaticMaxBudgetUs renamed to KernelStaticMaxPeriodUs
## Upgrade Notes

2
config.cmake
View file

@ -454,7 +454,7 @@ config_string(
)
config_string(
KernelStaticMaxBudgetUs KERNEL_STATIC_MAX_BUDGET_US
KernelStaticMaxPeriodUs KERNEL_STATIC_MAX_PERIOD_US
"Specifies a static maximum to which scheduling context can have \
either its period or budget configured."
DEFAULT 0

2
configs/ARM_MCS_verified.cmake
View file

@ -22,5 +22,5 @@ set(KernelPrinting OFF CACHE BOOL "")
set(KernelNumDomains 16 CACHE STRING "")
set(KernelMaxNumBootinfoUntypedCap 166 CACHE STRING "")
set(KernelIsMCS ON CACHE BOOL "")
set(KernelStaticMaxBudgetUs "(60 * 60 * MS_IN_S * US_IN_MS)" CACHE STRING "")
set(KernelStaticMaxPeriodUs "(60 * 60 * MS_IN_S * US_IN_MS)" CACHE STRING "")
include(${CMAKE_CURRENT_LIST_DIR}/seL4Config.cmake)

2
configs/RISCV64_MCS_verified.cmake
View file

@ -25,7 +25,7 @@ set(KernelMaxNumBootinfoUntypedCap 166 CACHE STRING "")
set(KernelRootCNodeSizeBits 19 CACHE STRING "")
set(KernelMaxNumBootinfoUntypedCaps 50 CACHE STRING "")
set(KernelIsMCS ON CACHE BOOL "")
set(KernelStaticMaxBudgetUs "(60 * 60 * MS_IN_S * US_IN_MS)" CACHE STRING "")
set(KernelStaticMaxPeriodUs "(60 * 60 * MS_IN_S * US_IN_MS)" CACHE STRING "")
set(KernelClzNoBuiltin ON CACHE BOOL "")
set(KernelCtzNoBuiltin ON CACHE BOOL "")
include(${CMAKE_CURRENT_LIST_DIR}/seL4Config.cmake)

8
include/kernel/sporadic.h
View file

@ -33,11 +33,11 @@
* at least this much budget - see comment on refill_sufficient */
#define MIN_BUDGET_US (2u * getKernelWcetUs() * CONFIG_KERNEL_WCET_SCALE)
#define MIN_BUDGET (2u * getKernelWcetTicks() * CONFIG_KERNEL_WCET_SCALE)
#if (CONFIG_KERNEL_STATIC_MAX_BUDGET_US) != 0
#define MAX_BUDGET_US (CONFIG_KERNEL_STATIC_MAX_BUDGET_US)
#if (CONFIG_KERNEL_STATIC_MAX_PERIOD_US) != 0
#define MAX_PERIOD_US (CONFIG_KERNEL_STATIC_MAX_PERIOD_US)
#else
#define MAX_BUDGET_US getMaxUsToTicks()
#endif /* CONFIG_KERNEL_STATIC_MAX_BUDGET_US != 0 */
#define MAX_PERIOD_US getMaxUsToTicks()
#endif /* CONFIG_KERNEL_STATIC_MAX_PERIOD_US != 0 */
/* Short hand for accessing refill queue items */
static inline refill_t *refill_index(sched_context_t *sc, word_t index)

8
src/object/schedcontrol.c
View file

@ -116,19 +116,19 @@ static exception_t decodeSchedControl_ConfigureFlags(word_t length, cap_t cap, w
return EXCEPTION_SYSCALL_ERROR;
}
if (budget_us > MAX_BUDGET_US || budget_ticks < MIN_BUDGET) {
if (budget_us > MAX_PERIOD_US || budget_ticks < MIN_BUDGET) {
userError("SchedControl_ConfigureFlags: budget out of range.");
current_syscall_error.type = seL4_RangeError;
current_syscall_error.rangeErrorMin = MIN_BUDGET_US;
current_syscall_error.rangeErrorMax = MAX_BUDGET_US;
current_syscall_error.rangeErrorMax = MAX_PERIOD_US;
return EXCEPTION_SYSCALL_ERROR;
}
if (period_us > MAX_BUDGET_US || period_ticks < MIN_BUDGET) {
if (period_us > MAX_PERIOD_US || period_ticks < MIN_BUDGET) {
userError("SchedControl_ConfigureFlags: period out of range.");
current_syscall_error.type = seL4_RangeError;
current_syscall_error.rangeErrorMin = MIN_BUDGET_US;
current_syscall_error.rangeErrorMax = MAX_BUDGET_US;
current_syscall_error.rangeErrorMax = MAX_PERIOD_US;
return EXCEPTION_SYSCALL_ERROR;
}