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authorAruna Balakrishnaiah <aruna@linux.vnet.ibm.com>2013-06-27 14:03:04 +0530
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-07-01 18:10:49 +1000
commitfbfe86fc0c53911cf243479f7d26c37dcb1243f1 (patch)
tree5594e2491c9fad042213dfaf29427808c55e6eab /arch/powerpc
parent6bbbca735936e15b9431882eceddcf6dff76e03c (diff)
downloadlinux-fbfe86fc0c53911cf243479f7d26c37dcb1243f1.tar.bz2
powerpc/pseries: Re-organise the oops compression code
nvram_compress() and zip_oops() is used by the nvram_pstore_write API to compress oops messages hence re-organise the functions accordingly to avoid forward declarations. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/platforms/pseries/nvram.c104
1 files changed, 52 insertions, 52 deletions
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 3f0e7d67d747..588bab5da8cb 100644
--- a/arch/powerpc/platforms/pseries/nvram.c
+++ b/arch/powerpc/platforms/pseries/nvram.c
@@ -486,6 +486,58 @@ static int clobbering_unread_rtas_event(void)
NVRAM_RTAS_READ_TIMEOUT);
}
+/* Derived from logfs_compress() */
+static int nvram_compress(const void *in, void *out, size_t inlen,
+ size_t outlen)
+{
+ int err, ret;
+
+ ret = -EIO;
+ err = zlib_deflateInit2(&stream, COMPR_LEVEL, Z_DEFLATED, WINDOW_BITS,
+ MEM_LEVEL, Z_DEFAULT_STRATEGY);
+ if (err != Z_OK)
+ goto error;
+
+ stream.next_in = in;
+ stream.avail_in = inlen;
+ stream.total_in = 0;
+ stream.next_out = out;
+ stream.avail_out = outlen;
+ stream.total_out = 0;
+
+ err = zlib_deflate(&stream, Z_FINISH);
+ if (err != Z_STREAM_END)
+ goto error;
+
+ err = zlib_deflateEnd(&stream);
+ if (err != Z_OK)
+ goto error;
+
+ if (stream.total_out >= stream.total_in)
+ goto error;
+
+ ret = stream.total_out;
+error:
+ return ret;
+}
+
+/* Compress the text from big_oops_buf into oops_buf. */
+static int zip_oops(size_t text_len)
+{
+ struct oops_log_info *oops_hdr = (struct oops_log_info *)oops_buf;
+ int zipped_len = nvram_compress(big_oops_buf, oops_data, text_len,
+ oops_data_sz);
+ if (zipped_len < 0) {
+ pr_err("nvram: compression failed; returned %d\n", zipped_len);
+ pr_err("nvram: logging uncompressed oops/panic report\n");
+ return -1;
+ }
+ oops_hdr->version = OOPS_HDR_VERSION;
+ oops_hdr->report_length = (u16) zipped_len;
+ oops_hdr->timestamp = get_seconds();
+ return 0;
+}
+
#ifdef CONFIG_PSTORE
static int nvram_pstore_open(struct pstore_info *psi)
{
@@ -759,58 +811,6 @@ int __init pSeries_nvram_init(void)
}
-/* Derived from logfs_compress() */
-static int nvram_compress(const void *in, void *out, size_t inlen,
- size_t outlen)
-{
- int err, ret;
-
- ret = -EIO;
- err = zlib_deflateInit2(&stream, COMPR_LEVEL, Z_DEFLATED, WINDOW_BITS,
- MEM_LEVEL, Z_DEFAULT_STRATEGY);
- if (err != Z_OK)
- goto error;
-
- stream.next_in = in;
- stream.avail_in = inlen;
- stream.total_in = 0;
- stream.next_out = out;
- stream.avail_out = outlen;
- stream.total_out = 0;
-
- err = zlib_deflate(&stream, Z_FINISH);
- if (err != Z_STREAM_END)
- goto error;
-
- err = zlib_deflateEnd(&stream);
- if (err != Z_OK)
- goto error;
-
- if (stream.total_out >= stream.total_in)
- goto error;
-
- ret = stream.total_out;
-error:
- return ret;
-}
-
-/* Compress the text from big_oops_buf into oops_buf. */
-static int zip_oops(size_t text_len)
-{
- struct oops_log_info *oops_hdr = (struct oops_log_info *)oops_buf;
- int zipped_len = nvram_compress(big_oops_buf, oops_data, text_len,
- oops_data_sz);
- if (zipped_len < 0) {
- pr_err("nvram: compression failed; returned %d\n", zipped_len);
- pr_err("nvram: logging uncompressed oops/panic report\n");
- return -1;
- }
- oops_hdr->version = OOPS_HDR_VERSION;
- oops_hdr->report_length = (u16) zipped_len;
- oops_hdr->timestamp = get_seconds();
- return 0;
-}
-
/*
* This is our kmsg_dump callback, called after an oops or panic report
* has been written to the printk buffer. We want to capture as much