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Source Code and Local Manifest for beyond0lte, beyond1lte, beyond2lte, d1, d2 (Lineage 17.1) #6

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pirx-dev opened this issue Jun 24, 2024 · 0 comments
Open

Source Code and Local Manifest for beyond0lte, beyond1lte, beyond2lte, d1, d2 (Lineage 17.1) #6

pirx-dev opened this issue Jun 24, 2024 · 0 comments

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@pirx-dev
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Hello Ivan,
I am a happy follower of your work concerning samsung devices.

I am now trying make lineage 17.1 run on the S10 devices and Note 10 devices.
I am still on 17.1 since this is - to my knowledge - the last version of lineage, where I can use a SDCard as adopted storage with Full Disk Encryption.

Could you supply the sources for the S10 devices?

Many thanks in advance.
kreciorek pushed a commit to kreciorek/EternityKernel that referenced this issue Dec 9, 2024
@kreciorek
sched/idle: Micro-optimize the idle loop
a1649f2 
Move the loop-invariant calculation of 'cpu' in do_idle() out of the loop body,
because the current CPU is always constant.

This improves the generated code both on x86-64 and ARM64:

x86-64:

Before patch (execution in loop):
	864:       0f ae e8                lfence
	867:       65 8b 05 c2 38 f1 7e    mov %gs:0x7ef138c2(%rip),%eax
	86e:       89 c0                   mov %eax,%eax
	870:       48 0f a3 05 68 19 08    bt  %rax,0x1081968(%rip)
	877:	   01

After patch (execution in loop):
	872:       0f ae e8                lfence
	875:       4c 0f a3 25 63 19 08    bt  %r12,0x1081963(%rip)
	87c:       01

ARM64:

Before patch (execution in loop):
	c58:       d5033d9f        dsb     ld
	c5c:       d538d080        mrs     x0, tpidr_el1
	c60:       b8606a61        ldr     w1, [x19,x0]
	c64:       1100fc20        add     w0, w1, #0x3f
	c68:       7100003f        cmp     w1, #0x0
	c6c:       1a81b000        csel    w0, w0, w1, lt
	c70:       13067c00        asr     w0, w0, ivanmeler#6
	c74:       93407c00        sxtw    x0, w0
	c78:       f8607a80        ldr     x0, [x20,x0,lsl ivanmeler#3]
	c7c:       9ac12401        lsr     x1, x0, x1
	c80:       36000581        tbz     w1, #0, d30 <do_idle+0x128>

After patch (execution in loop):
	c84:       d5033d9f        dsb     ld
	c88:       f9400260        ldr     x0, [x19]
	c8c:       ea14001f        tst     x0, x20
	c90:       54000580        b.eq    d40 <do_idle+0x138>

Signed-off-by: Cheng Jian <[email protected]>
[ Rewrote the title and the changelog. ]
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Change-Id: I4163e18652e1eba95f96debdbe335f896c69fc5b
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