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authorH. Peter Anvin <hpa@linux.intel.com>2012-04-23 16:29:18 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2012-04-23 16:29:18 -0700
commitd643bdca8ab9cd333da1b68267d0e47328e56f56 (patch)
tree59fa93e4f8e51fcbd862aeeef25d026d19c18459 /include/asm-generic/siginfo.h
parent98e5272fe70d62e193f70acf9951667beab27aba (diff)
downloadlinux-linaro-stable-d643bdca8ab9cd333da1b68267d0e47328e56f56.tar.gz
asm-generic: Allow overriding clock_t and add attributes to siginfo_t
For the particular issue of x32, which shares code with i386 in the handling of compat_siginfo_t, the use of a 64-bit clock_t bumps the sigchld structure out of alignment, which triggers a messy cascade of padding. This was already handled on the kernel compat side, but it needs handling on the user space side, which uses the generic header. To make that possible: 1. Allow __kernel_clock_t to be overridden in struct siginfo; 2. Allow there to be attributes added to struct siginfo. Reported-by: H.J. Lu <hjl.rools@gmail.com> Cc: Bruce J. Beare <bruce.j.beare@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Link: http://lkml.kernel.org/r/CAMe9rOqF6Kh6-NK7oP0Fpzkd4SBAWU%2BG53hwBbSD4iA2UzyxuA@mail.gmail.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'include/asm-generic/siginfo.h')
-rw-r--r--include/asm-generic/siginfo.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/include/asm-generic/siginfo.h b/include/asm-generic/siginfo.h
index 0dd4e87f6fba..5e5e3865f1ed 100644
--- a/include/asm-generic/siginfo.h
+++ b/include/asm-generic/siginfo.h
@@ -35,6 +35,14 @@ typedef union sigval {
#define __ARCH_SI_BAND_T long
#endif
+#ifndef __ARCH_SI_CLOCK_T
+#define __ARCH_SI_CLOCK_T __kernel_clock_t
+#endif
+
+#ifndef __ARCH_SI_ATTRIBUTES
+#define __ARCH_SI_ATTRIBUTES
+#endif
+
#ifndef HAVE_ARCH_SIGINFO_T
typedef struct siginfo {
@@ -72,8 +80,8 @@ typedef struct siginfo {
__kernel_pid_t _pid; /* which child */
__ARCH_SI_UID_T _uid; /* sender's uid */
int _status; /* exit code */
- __kernel_clock_t _utime;
- __kernel_clock_t _stime;
+ __ARCH_SI_CLOCK_T _utime;
+ __ARCH_SI_CLOCK_T _stime;
} _sigchld;
/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
@@ -91,7 +99,7 @@ typedef struct siginfo {
int _fd;
} _sigpoll;
} _sifields;
-} siginfo_t;
+} __ARCH_SI_ATTRIBUTES siginfo_t;
#endif