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SubjectRe: [PATCH] mm/debug: add a cast to u64 for atomic64_read()
On Sun, 10 Mar 2019, Qian Cai wrote:

>atomic64_read() on ppc64le returns "long int", so fix the same way as
>the commit d549f545e690 ("drm/virtio: use %llu format string form
>atomic64_t") by adding a cast to u64, which makes it work on all arches.
>In file included from ./include/linux/printk.h:7,
> from ./include/linux/kernel.h:15,
> from mm/debug.c:9:
>mm/debug.c: In function 'dump_mm':
>./include/linux/kern_levels.h:5:18: warning: format '%llx' expects
>argument of type 'long long unsigned int', but argument 19 has type
>'long int' [-Wformat=]
> #define KERN_SOH "\001" /* ASCII Start Of Header */
> ^~~~~~
>./include/linux/kern_levels.h:8:20: note: in expansion of macro
> #define KERN_EMERG KERN_SOH "0" /* system is unusable */
> ^~~~~~~~
>./include/linux/printk.h:297:9: note: in expansion of macro 'KERN_EMERG'
> printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
> ^~~~~~~~~~
>mm/debug.c:133:2: note: in expansion of macro 'pr_emerg'
> pr_emerg("mm %px mmap %px seqnum %llu task_size %lu\n"
> ^~~~~~~~
>mm/debug.c:140:17: note: format string is defined here
> "pinned_vm %llx data_vm %lx exec_vm %lx stack_vm %lx\n"
> ~~~^
> %lx
>Fixes: 70f8a3ca68d3 ("mm: make mm->pinned_vm an atomic64 counter")
>Signed-off-by: Qian Cai <>

Acked-by: Davidlohr Bueso <>

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