#ifndef _UAPI_GENERIC_STATFS_H #define _UAPI_GENERIC_STATFS_H #include /* * Most 64-bit platforms use 'long', while most 32-bit platforms use '__u32'. * Yes, they differ in signedness as well as size. * Special cases can override it for themselves -- except for S390x, which * is just a little too special for us. And MIPS, which I'm not touching * with a 10' pole. */ #ifndef __statfs_word #if __BITS_PER_LONG == 64 #define __statfs_word __kernel_long_t #else #define __statfs_word __u32 #endif #endif struct statfs { __statfs_word f_type; __statfs_word f_bsize; __statfs_word f_blocks; __statfs_word f_bfree; __statfs_word f_bavail; __statfs_word f_files; __statfs_word f_ffree; __kernel_fsid_t f_fsid; __statfs_word f_namelen; __statfs_word f_frsize; __statfs_word f_flags; __statfs_word f_spare[4]; }; /* * ARM needs to avoid the 32-bit padding at the end, for consistency * between EABI and OABI */ #ifndef ARCH_PACK_STATFS64 #define ARCH_PACK_STATFS64 #endif struct statfs64 { __statfs_word f_type; __statfs_word f_bsize; __u64 f_blocks; __u64 f_bfree; __u64 f_bavail; __u64 f_files; __u64 f_ffree; __kernel_fsid_t f_fsid; __statfs_word f_namelen; __statfs_word f_frsize; __statfs_word f_flags; __statfs_word f_spare[4]; } ARCH_PACK_STATFS64; /* * IA64 and x86_64 need to avoid the 32-bit padding at the end, * to be compatible with the i386 ABI */ #ifndef ARCH_PACK_COMPAT_STATFS64 #define ARCH_PACK_COMPAT_STATFS64 #endif struct compat_statfs64 { __u32 f_type; __u32 f_bsize; __u64 f_blocks; __u64 f_bfree; __u64 f_bavail; __u64 f_files; __u64 f_ffree; __kernel_fsid_t f_fsid; __u32 f_namelen; __u32 f_frsize; __u32 f_flags; __u32 f_spare[4]; } ARCH_PACK_COMPAT_STATFS64; #endif /* _UAPI_GENERIC_STATFS_H */ -remove'>logtreecommitdiff
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /include/soc
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/soc')