From: Maninder Singh <maninder1.s@samsung.com>
To: akpm@linux-foundation.org, herbert@gondor.apana.org.au,
davem@davemloft.net, keescook@chromium.org,
gustavo@embeddedor.com
Cc: joe@perches.com, linux-crypto@vger.kernel.org,
linux-kernel@vger.kernel.org, a.sahrawat@samsung.com,
pankaj.m@samsung.com, v.narang@samsung.com,
Maninder Singh <maninder1.s@samsung.com>
Subject: [PATCH 3/4] zstd: move params structure to global variable to reduce stack usage
Date: Mon, 3 Jun 2019 14:32:05 +0530 [thread overview]
Message-ID: <1559552526-4317-4-git-send-email-maninder1.s@samsung.com> (raw)
In-Reply-To: <1559552526-4317-1-git-send-email-maninder1.s@samsung.com>
As params structure remains same for lifetime, just initialise it
at init time and make it global variable.
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
---
crypto/zstd.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/crypto/zstd.c b/crypto/zstd.c
index 4e9ff22..80a9e5c 100644
--- a/crypto/zstd.c
+++ b/crypto/zstd.c
@@ -32,6 +32,8 @@ struct zstd_ctx {
void *dwksp;
};
+static ZSTD_parameters params;
+
static ZSTD_parameters zstd_params(void)
{
return ZSTD_getParams(ZSTD_DEF_LEVEL, 0, 0);
@@ -40,8 +42,10 @@ static ZSTD_parameters zstd_params(void)
static int zstd_comp_init(struct zstd_ctx *ctx)
{
int ret = 0;
- const ZSTD_parameters params = zstd_params();
- const size_t wksp_size = ZSTD_CCtxWorkspaceBound(params.cParams);
+ size_t wksp_size;
+
+ params = zstd_params();
+ wksp_size = ZSTD_CCtxWorkspaceBound(params.cParams);
ctx->cwksp = vzalloc(wksp_size);
if (!ctx->cwksp) {
@@ -160,7 +164,6 @@ static int __zstd_compress(const u8 *src, unsigned int slen,
{
size_t out_len;
struct zstd_ctx *zctx = ctx;
- const ZSTD_parameters params = zstd_params();
out_len = ZSTD_compressCCtx(zctx->cctx, dst, *dlen, src, slen, ¶ms);
if (ZSTD_isError(out_len))
--
2.7.4
next prev parent reply other threads:[~2019-06-03 9:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190603090227epcas5p348327061a3facbb9dfcf662bf2bc196e@epcas5p3.samsung.com>
2019-06-03 9:02 ` [PATCH 0/4] zstd: reduce stack usage Maninder Singh
[not found] ` <CGME20190603090232epcas5p1630d0584e8a1aa9495edc819605664fc@epcas5p1.samsung.com>
2019-06-03 9:02 ` [PATCH 1/4] zstd: pass pointer rathen than structure to functions Maninder Singh
2019-06-03 21:41 ` Andrew Morton
2019-06-04 22:43 ` Andrew Morton
2019-06-05 11:57 ` David Sterba
2019-06-05 12:32 ` David Sterba
2019-06-05 21:32 ` Andrew Morton
[not found] ` <CGME20190603090232epcas5p1630d0584e8a1aa9495edc819605664fc@epcms5p1>
2019-06-04 13:19 ` Vaneet Narang
2019-06-06 14:10 ` Vaneet Narang
2019-06-06 20:14 ` (2) " Nick Terrell
[not found] ` <CGME20190603090236epcas5p1bf0733024f7fb52f8129157b11c8f882@epcas5p1.samsung.com>
2019-06-03 9:02 ` [PATCH 2/4] zstd: use U16 data type for rankPos Maninder Singh
[not found] ` <CGME20190603090240epcas5p17d0881686df3fa3042d0b2d659e925b3@epcas5p1.samsung.com>
2019-06-03 9:02 ` Maninder Singh [this message]
2019-06-03 21:47 ` [PATCH 3/4] zstd: move params structure to global variable to reduce stack usage Andrew Morton
[not found] ` <CGME20190603090245epcas5p4a6cdfdb7ef72bfd36472f43bb4e1e0f1@epcas5p4.samsung.com>
2019-06-03 9:02 ` [PATCH 4/4] zstd: change structure variable from int to char Maninder Singh
2019-06-03 21:49 ` [PATCH 0/4] zstd: reduce stack usage Andrew Morton
[not found] ` <CGME20190603090227epcas5p348327061a3facbb9dfcf662bf2bc196e@epcms5p3>
2019-06-04 12:06 ` Vaneet Narang
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