Pawel Moll 858879737b perf: Handle compat ioctl ... commit b3f207855f upstream. When running a 32-bit userspace on a 64-bit kernel (eg. i386 application on x86_64 kernel or 32-bit arm userspace on arm64 kernel) some of the perf ioctls must be treated with special care, as they have a pointer size encoded in the command. For example, PERF_EVENT_IOC_ID in 32-bit world will be encoded as 0x80042407, but 64-bit kernel will expect 0x80082407. In result the ioctl will fail returning -ENOTTY. This patch solves the problem by adding code fixing up the size as compat_ioctl file operation. Reported-by: Drew Richardson <drew.richardson@arm.com> Signed-off-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1402671812-9078-1-git-send-email-pawel.moll@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: David Ahern <daahern@cisco.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-11-21 09:22:55 -08:00
..
callchain.c	perf: Add attribute to filter out callchains	2012-08-10 12:40:57 -03:00
core.c	perf: Handle compat ioctl	2014-11-21 09:22:55 -08:00
hw_breakpoint.c	hw_breakpoint: Use cpu_possible_mask in {reserve,release}_bp_slot()	2013-06-20 17:57:01 +02:00
internal.h	perf: Fix mmap() accounting hole	2013-06-19 12:44:13 +02:00
Makefile	uprobes: Move to kernel/events/	2012-02-22 11:08:00 +01:00
ring_buffer.c	perf: Fix perf ring buffer memory ordering	2013-11-20 12:27:47 -08:00
uprobes.c	uprobes: Fix utask->depth accounting in handle_trampoline()	2013-09-26 17:18:27 -07:00