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    Subject[PATCH v5 5/6] kprobes: Use text_alloc() and text_free()
    Date
    Use text_alloc() and text_free() instead of module_alloc() and
    module_memfree() when an arch provides them.

    Cc: linux-mm@kvack.org
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Masami Hiramatsu <mhiramat@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
    ---
    kernel/kprobes.c | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/kernel/kprobes.c b/kernel/kprobes.c
    index 4e46d96d4e16..611fcda9f6bf 100644
    --- a/kernel/kprobes.c
    +++ b/kernel/kprobes.c
    @@ -40,6 +40,7 @@
    #include <asm/cacheflush.h>
    #include <asm/errno.h>
    #include <linux/uaccess.h>
    +#include <linux/vmalloc.h>

    #define KPROBE_HASH_BITS 6
    #define KPROBE_TABLE_SIZE (1 << KPROBE_HASH_BITS)
    @@ -111,12 +112,20 @@ enum kprobe_slot_state {

    void __weak *alloc_insn_page(void)
    {
    +#ifdef CONFIG_ARCH_HAS_TEXT_ALLOC
    + return text_alloc(PAGE_SIZE);
    +#else
    return module_alloc(PAGE_SIZE);
    +#endif
    }

    void __weak free_insn_page(void *page)
    {
    +#ifdef CONFIG_ARCH_HAS_TEXT_ALLOC
    + text_free(page);
    +#else
    module_memfree(page);
    +#endif
    }

    struct kprobe_insn_cache kprobe_insn_slots = {
    --
    2.25.1
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