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Revision 74545f63890e38520eb4d1dbedcadaa9c0dbc824 authored by David Carrillo-Cisneros on 23 December 2016, 01:17:40 UTC, committed by Ingo Molnar on 05 January 2017, 08:13:55 UTC 
perf/x86: Set pmu->module in Intel PMU modules
 
The conversion of Intel PMU drivers into modules did not include reference
counting. The machine will crash when attempting to  access deleted code
if an event from a module PMU is started and the module removed before the
event is destroyed.

i.e. this crashes the machine:

	$ insmod intel-rapl-perf.ko
	$ perf stat -e power/energy-cores/ -C 0 &
	$ rmmod intel-rapl-perf.ko

Set THIS_MODULE to pmu->module in Intel module PMUs so that generic code
can handle reference counting and deny rmmod while an event still exists.

Signed-off-by: David Carrillo-Cisneros <davidcc@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1482455860-116269-1-git-send-email-davidcc@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
1 parent 4e06d4f
Raw File
Makefile 
#
# Makefile for the linux reiser-filesystem routines.
#

obj-$(CONFIG_REISERFS_FS) += reiserfs.o

reiserfs-objs := bitmap.o do_balan.o namei.o inode.o file.o dir.o fix_node.o \
		 super.o prints.o objectid.o lbalance.o ibalance.o stree.o \
		 hashes.o tail_conversion.o journal.o resize.o \
		 item_ops.o ioctl.o xattr.o lock.o

ifeq ($(CONFIG_REISERFS_PROC_INFO),y)
reiserfs-objs += procfs.o
endif

ifeq ($(CONFIG_REISERFS_FS_XATTR),y)
reiserfs-objs += xattr_user.o xattr_trusted.o
endif

ifeq ($(CONFIG_REISERFS_FS_SECURITY),y)
reiserfs-objs += xattr_security.o
endif

ifeq ($(CONFIG_REISERFS_FS_POSIX_ACL),y)
reiserfs-objs += xattr_acl.o
endif

# gcc -O2 (the kernel default)  is overaggressive on ppc32 when many inline
# functions are used.  This causes the compiler to advance the stack
# pointer out of the available stack space, corrupting kernel space,
# and causing a panic. Since this behavior only affects ppc32, this ifeq
# will work around it. If any other architecture displays this behavior,
# add it here.
ccflags-$(CONFIG_PPC32) := $(call cc-ifversion, -lt, 0400, -O1)

TAGS:
	etags *.c
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