# HG changeset patch
# User George Dunlap <dunlapg@xxxxxxxxx>
# Node ID f681ffc9b01a5ba97ccb81dbeb50343904e8498b
# Parent 6a8204e4619d5bd182364b768b1ec2c8a43e8d15
Added option to xentrace to set the trace buffer size.
Signed-off-by: George Dunlap <gdunlap@xxxxxxxxxxxxx>
---
tools/xentrace/xentrace.c | 21 ++++++++++++++++++++-
1 files changed, 20 insertions(+), 1 deletion(-)
diff -r 6a8204e4619d -r f681ffc9b01a tools/xentrace/xentrace.c
--- a/tools/xentrace/xentrace.c Mon Aug 21 13:36:05 2006 +0100
+++ b/tools/xentrace/xentrace.c Mon Aug 21 12:05:11 2006 -0400
@@ -55,6 +55,7 @@ typedef struct settings_st {
unsigned long new_data_thresh;
uint32_t evt_mask;
uint32_t cpu_mask;
+ unsigned long tbuf_size;
} settings_t;
settings_t opts;
@@ -111,7 +112,10 @@ static void get_tbufs(unsigned long *mfn
exit(EXIT_FAILURE);
}
- ret = xc_tbuf_enable(xc_handle, DEFAULT_TBUF_SIZE, mfn, size);
+ if(!opts.tbuf_size)
+ opts.tbuf_size = DEFAULT_TBUF_SIZE;
+
+ ret = xc_tbuf_enable(xc_handle, opts.tbuf_size, mfn, size);
if ( ret != 0 )
{
@@ -400,6 +404,15 @@ error_t cmd_parser(int key, char *arg, s
}
break;
+ case 'S': /* set tbuf size (given in pages) */
+ {
+ char *inval;
+ setup->tbuf_size = strtol(arg, &inval, 0);
+ if ( inval == arg )
+ argp_usage(state);
+ }
+ break;
+
case ARGP_KEY_ARG:
{
if ( state->arg_num == 0 )
@@ -438,6 +451,12 @@ const struct argp_option cmd_opts[] =
{ .name = "evt-mask", .key='e', .arg="e",
.doc =
"set evt-mask " },
+
+ { .name = "trace-buf-size", .key='S', .arg="N",
+ .doc =
+ "Set trace buffer size in pages (default " xstr(DEFAULT_TBUF_SIZE) "). "
+ "N.B. that the trace buffer cannot be resized. If it has "
+ "already been set this boot cycle, this argument will be ignored." },
{0}
};
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