arch: arc: Added benchmark related hooks.
The benchmark application timing_info needs certain hooks to be present in the kernel to get the accurate measurements. This patch adds these hook at all the required locations. Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
This commit is contained in:
Adithya Baglody
Anas Nashif
parent
667ad04086
commit
db0c5ca08b
4 changed files with 145 additions and 0 deletions
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@ -19,6 +19,7 @@
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#include <sw_isr_table.h>
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#include <kernel_structs.h>
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#include <arch/cpu.h>
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#include <swap_macros.h>
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GTEXT(_isr_wrapper)
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GTEXT(_isr_demux)
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@ -229,6 +230,43 @@ From RIRQ:
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*/
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SECTION_FUNC(TEXT, _isr_wrapper)
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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push_s r0
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push_s blink
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push_s r13
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push_s r12
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push r11
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push r10
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push r9
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push r8
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push r7
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push r6
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push r5
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push r4
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push_s r3
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push_s r2
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push_s r1
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bl read_timer_start_of_isr
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pop_s r1
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pop_s r2
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pop_s r3
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pop r4
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pop r5
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pop r6
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pop r7
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pop r8
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pop r9
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pop r10
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pop r11
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pop_s r12
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pop_s r13
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pop_s blink
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pop_s r0
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#endif
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#if CONFIG_ARC_FIRQ
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#if CONFIG_RGF_NUM_BANKS == 1
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st r0,[saved_r0]
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@ -288,6 +326,7 @@ rirq_path:
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j_s [r2]
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#endif
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#else
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mov r3, _rirq_exit
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mov r2, _rirq_enter
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j_s [r2]
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@ -371,6 +410,42 @@ irq_hint_handled:
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add3 r0, r1, r0 /* table entries are 8-bytes wide */
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ld_s r1, [r0, 4] /* ISR into r1 */
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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push_s r0
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push_s blink
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push_s r13
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push_s r12
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push r11
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push r10
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push r9
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push r8
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push r7
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push r6
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push r5
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push r4
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push_s r3
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push_s r2
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push_s r1
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bl read_timer_end_of_isr
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pop_s r1
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pop_s r2
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pop_s r3
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pop r4
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pop r5
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pop r6
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pop r7
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pop r8
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pop r9
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pop r10
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pop r11
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pop_s r12
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pop_s r13
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pop_s blink
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pop_s r0
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#endif
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jl_s.d [r1]
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ld_s r0, [r0] /* delay slot: ISR parameter into r0 */
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@ -61,6 +61,21 @@ GDATA(_kernel)
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SECTION_FUNC(TEXT, __swap)
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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mov r1, _kernel
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ld_s r2, [r1, _kernel_offset_to_current]
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_save_callee_saved_regs
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push_s r31
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bl read_timer_start_of_swap
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pop_s r31
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mov r1, _kernel
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ld_s r2, [r1, _kernel_offset_to_current]
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_load_callee_saved_regs
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st sp, [r2, _thread_offset_to_sp]
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#endif
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/* interrupts are locked, interrupt key is in r0 */
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mov r1, _kernel
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@ -144,6 +159,11 @@ _swap_return_from_coop:
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/* sflag instruction is not supported in current ARC GNU */
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.long 0x00ff302f
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#endif
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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b _capture_value_for_benchmarking
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#endif
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return_loc:
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pop_s r3 /* status32 into r3 */
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kflag r3 /* write status32 */
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@ -196,4 +216,24 @@ _return_from_exc:
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ld ilink, [sp, ___isf_t_status32_OFFSET - ___isf_t_pc_OFFSET]
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sr ilink, [_ARC_V2_ERSTATUS]
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add_s sp, sp, ___isf_t_status32_OFFSET - ___isf_t_pc_OFFSET + 4
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rtie
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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.balign 4
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_capture_value_for_benchmarking:
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mov r1, _kernel
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ld_s r2, [r1, _kernel_offset_to_current]
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_save_callee_saved_regs
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push_s blink
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bl read_timer_end_of_swap
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pop_s blink
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mov r1, _kernel
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ld_s r2, [r1, _kernel_offset_to_current]
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_load_callee_saved_regs
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st sp, [r2, _thread_offset_to_sp]
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b return_loc
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#endif /* CONFIG_EXECUTION_BENCHMARKING */
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@ -163,6 +163,11 @@ _arc_go_to_user_space:
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mov r30, 0
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mov blink, 0
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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b _capture_value_for_benchmarking_userspace
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return_loc_userspace_enter:
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#endif /* CONFIG_EXECUTION_BENCHMARKING */
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rtie
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/**
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@ -265,3 +270,20 @@ inc_len:
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/* increment length measurement, loop again */
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add_s r0, r0, 1
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b_s strlen_loop
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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.balign 4
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_capture_value_for_benchmarking_userspace:
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mov r1, _kernel
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ld_s r2, [r1, _kernel_offset_to_current]
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_save_callee_saved_regs
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push_s blink
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bl read_timer_end_of_userspace_enter
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pop_s blink
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mov r1, _kernel
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ld_s r2, [r1, _kernel_offset_to_current]
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_load_callee_saved_regs
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b return_loc_userspace_enter
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#endif
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@ -185,6 +185,10 @@ static inline void program_max_cycles(void)
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*/
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void _timer_int_handler(void *unused)
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{
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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extern void read_timer_start_of_tick_handler(void);
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read_timer_start_of_tick_handler();
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#endif
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ARG_UNUSED(unused);
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/* clear the interrupt by writing 0 to IP bit of the control register */
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timer0_control_register_set(_ARC_V2_TMR_CTRL_NH | _ARC_V2_TMR_CTRL_IE);
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@ -230,6 +234,10 @@ void _timer_int_handler(void *unused)
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update_accumulated_count();
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#endif
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#ifdef CONFIG_EXECUTION_BENCHMARKING
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extern void read_timer_end_of_tick_handler(void);
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read_timer_end_of_tick_handler();
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#endif
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}
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#ifdef CONFIG_TICKLESS_KERNEL
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