Patchwork [38/40] trace syscalls: Remove redundant test for unmapped compat syscalls

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Submitter Ian Munsie
Date June 23, 2010, 10:03 a.m.
Message ID <1277287401-28571-39-git-send-email-imunsie@au1.ibm.com>
Download mbox | patch
Permalink /patch/56662/
State Not Applicable
Headers show

Comments

Ian Munsie - June 23, 2010, 10:03 a.m.
From: Ian Munsie <imunsie@au1.ibm.com>

Since the ftrace event initialisation routine now verifies that either
the syscall number or the compat syscall number is valid and will not
create events for unmapped syscalls, it is unnecessary to explicitly
search for them, so remove it.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
---
 kernel/trace/trace_syscalls.c |   20 --------------------
 1 files changed, 0 insertions(+), 20 deletions(-)

Patch

diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index c0041e3..108c2eb 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -528,26 +528,6 @@  int __init init_ftrace_syscalls(void)
 			meta->compat_syscall_nr = i;
 			compat_syscalls_metadata[i] = meta;
 		}
-		/* now check if any compat_syscalls are not referenced */
-		for (ftrace_event = __start_ftrace_events;
-			(unsigned long)ftrace_event <
-			(unsigned long)__stop_ftrace_events; ftrace_event++) {
-
-			match = 0;
-			if (!ftrace_event->name)
-				continue;
-			if (strcmp(ftrace_event->class->system, "compat_syscalls"))
-				continue;
-			for (i = 0; i < NR_syscalls_compat; i++) {
-				if (ftrace_event->data ==
-						compat_syscalls_metadata[i]) {
-					match = 1;
-					break;
-				}
-			}
-			if (!match)
-				ftrace_event->name = NULL;
-		}
 	}
 #endif
 	return 0;