evie/android_kernel_oneplus_msm8998
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arm64: Prevent msm-rtb tracing in memcpy_{from,to}io and memset_io

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Use the no-log variants of the read{b,q,l}/write{b,q,l} APIs
to prevent flooding the MSM register trace buffer (RTB) logs
with memcpy/memset induced logging.

Change-Id: I16556e1d6f4abe00e6f33b8375a5a1839dfca34e
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
This commit is contained in:
Trilok Soni 2016-09-02 12:21:28 -07:00
parent ab26d09879
commit ea78c2d2d9
1 changed files with 9 additions and 9 deletions
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18
arch/arm64/kernel/io.c
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@ -28,21 +28,21 @@ void __memcpy_fromio(void *to, const volatile void __iomem *from, size_t count)
{
while (count && (!IS_ALIGNED((unsigned long)from, 8) ||
!IS_ALIGNED((unsigned long)to, 8))) {
*(u8 *)to = __raw_readb(from);
*(u8 *)to = __raw_readb_no_log(from);
from++;
to++;
count--;
}
while (count >= 8) {
*(u64 *)to = __raw_readq(from);
*(u64 *)to = __raw_readq_no_log(from);
from += 8;
to += 8;
count -= 8;
}
while (count) {
*(u8 *)to = __raw_readb(from);
*(u8 *)to = __raw_readb_no_log(from);
from++;
to++;
count--;
@ -57,21 +57,21 @@ void __memcpy_toio(volatile void __iomem *to, const void *from, size_t count)
{
while (count && (!IS_ALIGNED((unsigned long)to, 8) ||
!IS_ALIGNED((unsigned long)from, 8))) {
__raw_writeb(*(volatile u8 *)from, to);
__raw_writeb_no_log(*(volatile u8 *)from, to);
from++;
to++;
count--;
}
while (count >= 8) {
__raw_writeq(*(volatile u64 *)from, to);
__raw_writeq_no_log(*(volatile u64 *)from, to);
from += 8;
to += 8;
count -= 8;
}
while (count) {
__raw_writeb(*(volatile u8 *)from, to);
__raw_writeb_no_log(*(volatile u8 *)from, to);
from++;
to++;
count--;
@ -91,19 +91,19 @@ void __memset_io(volatile void __iomem *dst, int c, size_t count)
qc |= qc << 32;
while (count && !IS_ALIGNED((unsigned long)dst, 8)) {
__raw_writeb(c, dst);
__raw_writeb_no_log(c, dst);
dst++;
count--;
}
while (count >= 8) {
__raw_writeq(qc, dst);
__raw_writeq_no_log(qc, dst);
dst += 8;
count -= 8;
}
while (count) {
__raw_writeb(c, dst);
__raw_writeb_no_log(c, dst);
dst++;
count--;
}