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Add SDT probes for opencrypto:deflate:deflate_gobal:*.

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They are not nice but they were helpful.

MFC after:	6 days
This commit is contained in:
Bjoern A. Zeeb 2009-11-28 17:20:41 +00:00
parent df21ad6e41
commit d9c18e5627
1 changed files with 61 additions and 7 deletions
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68
sys/opencrypto/deflate.c
View file

@ -35,16 +35,30 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_kdtrace.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/sdt.h>
#include <sys/systm.h>
#include <net/zlib.h>
#include <opencrypto/cryptodev.h>
#include <opencrypto/deflate.h>
SDT_PROVIDER_DECLARE(opencrypto);
SDT_PROBE_DEFINE2(opencrypto, deflate, deflate_global, entry,
"int", "u_int32_t");
SDT_PROBE_DEFINE5(opencrypto, deflate, deflate_global, bad,
"int", "int", "int", "int", "int");
SDT_PROBE_DEFINE5(opencrypto, deflate, deflate_global, iter,
"int", "int", "int", "int", "int");
SDT_PROBE_DEFINE2(opencrypto, deflate, deflate_global, return,
"int", "u_int32_t");
int window_inflate = -1 * MAX_WBITS;
int window_deflate = -12;
@ -68,6 +82,8 @@ deflate_global(data, size, decomp, out)
int error, i = 0, j;
struct deflate_buf buf[ZBUF];
SDT_PROBE2(opencrypto, deflate, deflate_global, entry, decomp, size);
bzero(&zbuf, sizeof(z_stream));
for (j = 0; j < ZBUF; j++)
buf[j].flag = 0;
@ -81,8 +97,11 @@ deflate_global(data, size, decomp, out)
if (!decomp) {
buf[i].out = malloc((u_long) size, M_CRYPTO_DATA,
M_NOWAIT);
if (buf[i].out == NULL)
if (buf[i].out == NULL) {
SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
decomp, 0, __LINE__);
goto bad;
}
buf[i].size = size;
buf[i].flag = 1;
i++;
@ -96,8 +115,11 @@ deflate_global(data, size, decomp, out)
buf[i].out = malloc((u_long) (size * 4),
M_CRYPTO_DATA, M_NOWAIT);
if (buf[i].out == NULL)
if (buf[i].out == NULL) {
SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
decomp, 0, __LINE__);
goto bad;
}
buf[i].size = size * 4;
buf[i].flag = 1;
i++;
@ -110,36 +132,67 @@ deflate_global(data, size, decomp, out)
deflateInit2(&zbuf, Z_DEFAULT_COMPRESSION, Z_METHOD,
window_deflate, Z_MEMLEVEL, Z_DEFAULT_STRATEGY);
if (error != Z_OK)
if (error != Z_OK) {
SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
decomp, error, __LINE__);
goto bad;
}
for (;;) {
error = decomp ? inflate(&zbuf, Z_PARTIAL_FLUSH) :
deflate(&zbuf, Z_PARTIAL_FLUSH);
if (error != Z_OK && error != Z_STREAM_END)
if (error != Z_OK && error != Z_STREAM_END) {
/*
* Unfortunately we are limited to 5 arguments,
* thus use two probes.
*/
SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
decomp, error, __LINE__,
zbuf.avail_in, zbuf.avail_out);
SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
decomp, error, __LINE__,
zbuf.state->dummy, zbuf.total_out);
goto bad;
}
else if (zbuf.avail_in == 0 && zbuf.avail_out != 0)
goto end;
else if (zbuf.avail_out == 0 && i < (ZBUF - 1)) {
/* we need more output space, allocate size */
buf[i].out = malloc((u_long) size,
M_CRYPTO_DATA, M_NOWAIT);
if (buf[i].out == NULL)
if (buf[i].out == NULL) {
SDT_PROBE3(opencrypto, deflate, deflate_global,
bad, decomp, 0, __LINE__);
goto bad;
}
zbuf.next_out = buf[i].out;
buf[i].size = size;
buf[i].flag = 1;
zbuf.avail_out = buf[i].size;
i++;
} else
} else {
/*
* Unfortunately we are limited to 5 arguments,
* thus, again, use two probes.
*/
SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
decomp, error, __LINE__,
zbuf.avail_in, zbuf.avail_out);
SDT_PROBE5(opencrypto, deflate, deflate_global, bad,
decomp, error, __LINE__,
zbuf.state->dummy, zbuf.total_out);
goto bad;
}
}
end:
result = count = zbuf.total_out;
*out = malloc((u_long) result, M_CRYPTO_DATA, M_NOWAIT);
if (*out == NULL)
if (*out == NULL) {
SDT_PROBE3(opencrypto, deflate, deflate_global, bad,
decomp, 0, __LINE__);
goto bad;
}
if (decomp)
inflateEnd(&zbuf);
else
@ -160,6 +213,7 @@ end:
}
}
*out = output;
SDT_PROBE2(opencrypto, deflate, deflate_global, return, decomp, result);
return result;
bad: