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| author | Nicholas Piggin <npiggin@gmail.com> | 2016-09-16 20:48:17 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-19 10:53:55 +1000 |
| commit | 6f698df10cb24d466b9a790b9daedb9e7bcd5d2a (patch) | |
| tree | e357b127a8ce4f76c0b67549b1814aa44994aada /arch/powerpc/kernel/misc_32.S | |
| parent | 03465f899bdac70d34f6ca447a74d8ae9e284ce5 (diff) | |
| download | lwn-6f698df10cb24d466b9a790b9daedb9e7bcd5d2a.tar.gz lwn-6f698df10cb24d466b9a790b9daedb9e7bcd5d2a.zip | |
powerpc/kernel: Use kprobe blacklist for asm functions
Rather than forcing the whole function into the ".kprobes.text" section,
just add the symbol's address to the kprobe blacklist.
This also lets us drop the three versions of the_KPROBE macro, in
exchange for just one version of _ASM_NOKPROBE_SYMBOL - which is a good
cleanup.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/misc_32.S')
| -rw-r--r-- | arch/powerpc/kernel/misc_32.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index d9c912b6e632..03756ffdcd71 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -328,7 +328,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_UNIFIED_ID_CACHE) * * flush_icache_range(unsigned long start, unsigned long stop) */ -_KPROBE(flush_icache_range) +_GLOBAL(flush_icache_range) BEGIN_FTR_SECTION PURGE_PREFETCHED_INS blr /* for 601, do nothing */ @@ -358,6 +358,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) sync /* additional sync needed on g4 */ isync blr +_ASM_NOKPROBE_SYMBOL(flush_icache_range) + /* * Flush a particular page from the data cache to RAM. * Note: this is necessary because the instruction cache does *not* |