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ARM: 7524/1: support syscall tracing

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As specified by ftrace-design.txt, TIF_SYSCALL_TRACEPOINT was
added, as well as NR_syscalls in asm/unistd.h.  Additionally,
__sys_trace was modified to call trace_sys_enter and
trace_sys_exit when appropriate.

Tests #2 - #4 of "perf test" now complete successfully.

Signed-off-by: Steven Walter <stevenrwalter@gmail.com>
Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Wade Farnsworth 2012-09-07 18:18:25 +01:00 • committed by Russell King
parent 5698bd757d
commit 1f66e06fb6
6 changed files with 34 additions and 3 deletions
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4
arch/arm/include/asm/syscall.h
View file

@ -9,6 +9,10 @@
#include <linux/err.h>
#include <asm/unistd.h>
#define NR_syscalls (__NR_syscalls)
extern const unsigned long sys_call_table[];
static inline int syscall_get_nr(struct task_struct *task,