From: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
To: tony.luck@intel.com, keescook@chromium.org,
benh@kernel.crashing.org, linux-kernel@vger.kernel.org,
linuxppc-dev@ozlabs.org, paulus@samba.org
Cc: jkenisto@linux.vnet.ibm.com, mahesh@linux.vnet.ibm.com,
cbouatmailru@gmail.com, anton@samba.org, ccross@android.com
Subject: [PATCH v2 2/3] powerpc/pseries: Re-organise the oops compression code
Date: Thu, 27 Jun 2013 14:03:04 +0530 [thread overview]
Message-ID: <20130627083304.16749.96648.stgit@aruna-ThinkPad-T420> (raw)
In-Reply-To: <20130627082941.16749.67023.stgit@aruna-ThinkPad-T420>
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>
---
arch/powerpc/platforms/pseries/nvram.c | 104 ++++++++++++++++----------------
1 file changed, 52 insertions(+), 52 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 3f0e7d6..588bab5 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
next prev parent reply other threads:[~2013-06-27 8:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-27 8:32 [PATCH v2 0/3] Nvram-to-pstore: compression support for oops data Aruna Balakrishnaiah
2013-06-27 8:32 ` [PATCH v2 1/3] Pass header size in the pstore write callback Aruna Balakrishnaiah
2013-06-27 8:33 ` Aruna Balakrishnaiah [this message]
2013-06-27 8:33 ` [PATCH v2 3/3] powerpc/pseries: Support compression of oops text via pstore Aruna Balakrishnaiah
2013-06-27 15:36 ` [PATCH v2 0/3] Nvram-to-pstore: compression support for oops data Kees Cook
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130627083304.16749.96648.stgit@aruna-ThinkPad-T420 \
--to=aruna@linux.vnet.ibm.com \
--cc=anton@samba.org \
--cc=benh@kernel.crashing.org \
--cc=cbouatmailru@gmail.com \
--cc=ccross@android.com \
--cc=jkenisto@linux.vnet.ibm.com \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=mahesh@linux.vnet.ibm.com \
--cc=paulus@samba.org \
--cc=tony.luck@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox