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authorMichael Cree <mcree@orcon.net.nz>2009-12-08 22:27:01 +0300
committerMatt Turner <mattst88@gmail.com>2009-12-18 09:11:30 +0300
commita582e6f01b90211933e70edcec9bc0bbb1157402 (patch)
treef893e538cf288c153b7970f1b635f613cbb56e0e /arch/alpha/include/asm
parent21797c599c710d3851d241c4b50690f2482bf618 (diff)
downloadlinux-a582e6f01b90211933e70edcec9bc0bbb1157402.tar.xz
alpha: Add minimal support for software performance events
In the kernel the patch enables configuration of the perf event option, adds the perf_event_open syscall, and includes a minimal architecture specific asm/perf_event.h header file. Signed-off-by: Michael Cree <mcree@orcon.net.nz> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'arch/alpha/include/asm')
-rw-r--r--arch/alpha/include/asm/perf_event.h9
-rw-r--r--arch/alpha/include/asm/unistd.h3
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/alpha/include/asm/perf_event.h b/arch/alpha/include/asm/perf_event.h
new file mode 100644
index 000000000000..3bef8522017c
--- /dev/null
+++ b/arch/alpha/include/asm/perf_event.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_ALPHA_PERF_EVENT_H
+#define __ASM_ALPHA_PERF_EVENT_H
+
+/* Alpha only supports software events through this interface. */
+static inline void set_perf_event_pending(void) { }
+
+#define PERF_EVENT_INDEX_OFFSET 0
+
+#endif /* __ASM_ALPHA_PERF_EVENT_H */
diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index 62e823e68f65..804e5311c841 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -448,10 +448,11 @@
#define __NR_preadv 490
#define __NR_pwritev 491
#define __NR_rt_tgsigqueueinfo 492
+#define __NR_perf_event_open 493
#ifdef __KERNEL__
-#define NR_SYSCALLS 493
+#define NR_SYSCALLS 494
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR