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| author |   Valentin Schneider <valentin.schneider@arm.com> | 2019-01-31 18:23:37 +0000 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2019-02-04 16:54:35 +0000 |
| commit | 8aa67d18a466f338f79bac99f44e7891f4c71bbb (patch) | |
| tree | 66817749d02078810a4a6fc909eebfdd3d9702e0 /arch/arm64/kernel | |
| parent | efi/arm: Don't expect a return value of ptdump_debugfs_register (diff) | |
| download | linux-dev-8aa67d18a466f338f79bac99f44e7891f4c71bbb.tar.xz linux-dev-8aa67d18a466f338f79bac99f44e7891f4c71bbb.zip | |
arm64: entry: Remove unneeded need_resched() loop
Since the enabling and disabling of IRQs within preempt_schedule_irq()
is contained in a need_resched() loop, we don't need the outer arch
code loop.
Reported-by: Julien Thierry <julien.thierry@arm.com>
Reported-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Julien Grall <julien.grall@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/entry.S | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index 0ec0c46b2c0c..4d0c81f29a60 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -611,7 +611,7 @@ el1_irq: #ifdef CONFIG_PREEMPT ldr x24, [tsk, #TSK_TI_PREEMPT] // get preempt count cbnz x24, 1f // preempt count != 0 - bl el1_preempt + bl preempt_schedule_irq // irq en/disable is done inside 1: #endif #ifdef CONFIG_TRACE_IRQFLAGS @@ -620,15 +620,6 @@ el1_irq: kernel_exit 1 ENDPROC(el1_irq) -#ifdef CONFIG_PREEMPT -el1_preempt: - mov x24, lr -1: bl preempt_schedule_irq // irq en/disable is done inside - ldr x0, [tsk, #TSK_TI_FLAGS] // get new tasks TI_FLAGS - tbnz x0, #TIF_NEED_RESCHED, 1b // needs rescheduling? - ret x24 -#endif - /* * EL0 mode handlers. */ |