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| author | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-04-01 14:56:34 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-04-06 14:36:56 +0200 |
| commit | 9a91dd501c2b98b6a1677affa514e30452b9c908 (patch) | |
| tree | 9aa6d88029955e66c13e979104f094476df4f4ac | |
| parent | MIPS: Add support for CONFIG_DEBUG_VIRTUAL (diff) | |
| download | linux-9a91dd501c2b98b6a1677affa514e30452b9c908.tar.xz linux-9a91dd501c2b98b6a1677affa514e30452b9c908.zip | |
MIPS: kernel: Remove not needed set_fs calls
flush_icache_range always does flush kernel address ranges, so no
need to do the set_fs dance.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | arch/mips/kernel/ftrace.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c index 666b9969c1bd..8c401e42301c 100644 --- a/arch/mips/kernel/ftrace.c +++ b/arch/mips/kernel/ftrace.c @@ -90,7 +90,6 @@ static int ftrace_modify_code_2(unsigned long ip, unsigned int new_code1, unsigned int new_code2) { int faulted; - mm_segment_t old_fs; safe_store_code(new_code1, ip, faulted); if (unlikely(faulted)) @@ -102,10 +101,7 @@ static int ftrace_modify_code_2(unsigned long ip, unsigned int new_code1, return -EFAULT; ip -= 4; - old_fs = get_fs(); - set_fs(KERNEL_DS); flush_icache_range(ip, ip + 8); - set_fs(old_fs); return 0; } @@ -114,7 +110,6 @@ static int ftrace_modify_code_2r(unsigned long ip, unsigned int new_code1, unsigned int new_code2) { int faulted; - mm_segment_t old_fs; ip += 4; safe_store_code(new_code2, ip, faulted); @@ -126,10 +121,7 @@ static int ftrace_modify_code_2r(unsigned long ip, unsigned int new_code1, if (unlikely(faulted)) return -EFAULT; - old_fs = get_fs(); - set_fs(KERNEL_DS); flush_icache_range(ip, ip + 8); - set_fs(old_fs); return 0; } |