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Do not spam the kernel log with unnecessary error messages when processing
requests that aren't a multiple of AES block size.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Remove unnecessary 'dev_ptr' NULL assignments in sahara_remove() and
sahara_probe().
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The 'active' flag is only used to indirectly set the 'first' flag.
Drop the 'active' flag and set 'first' directly in sahara_sha_init().
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Switch to use dev_err_probe() to simplify the error paths and unify
message template. While at it, also remove explicit error messages
from every potential -ENOMEM.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use devm_clk_get_enabled() helper to simplify probe/remove code. Also, use
dev_err_probe() for error reporting.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Where applicable, use BIT() macro instead of shift operation to improve
readability. No functional change.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Use the same indentation style for all macros.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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When testing sahara sha256 speed performance with tcrypt (mode=404) on
imx53-qsrb board, multiple "Invalid numbers of src SG." errors are
reported. This was traced to sahara_walk_and_recalc() resizing req->src
and causing the subsequent dma_map_sg() call to fail.
Now that the previous commit fixed sahara_sha_hw_links_create() to take
into account the actual request size, rather than relying on sg->length
values, the resize operation is no longer necessary.
Therefore, remove sahara_walk_and_recalc() and simplify associated logic.
Fixes: 5a2bb93f5992 ("crypto: sahara - add support for SHA1/256")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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It's not always the case that the entire sg entry needs to be processed.
Currently, when nbytes is less than sg->length, "Descriptor length" errors
are encountered.
To fix this, take the actual request size into account when populating the
hw links.
Fixes: 5a2bb93f5992 ("crypto: sahara - add support for SHA1/256")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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sahara_sha_hw_data_descriptor_create() returns negative error codes on
failure, so make sure the errors are correctly handled / propagated.
Fixes: 5a2bb93f5992 ("crypto: sahara - add support for SHA1/256")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The sg lists are not unmapped in case of timeout errors. Fix this.
Fixes: 5a2bb93f5992 ("crypto: sahara - add support for SHA1/256")
Fixes: 5de8875281e1 ("crypto: sahara - Add driver for SAHARA2 accelerator.")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Set the reqsize for sha algorithms to sizeof(struct sahara_sha_reqctx), the
extra space is not needed.
Fixes: 5a2bb93f5992 ("crypto: sahara - add support for SHA1/256")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In case of a zero-length input, exit gracefully from sahara_aes_crypt().
Fixes: 5de8875281e1 ("crypto: sahara - Add driver for SAHARA2 accelerator.")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Commit 31865c4c4db2 ("crypto: skcipher - Add lskcipher") moved some
fields from 'struct skcipher_alg' into SKCIPHER_ALG_COMMON but didn't
remove the corresponding kerneldoc members, which results in these
warnings when running 'make htmldocs':
./include/crypto/skcipher.h:182: warning: Excess struct member 'min_keysize' description in 'skcipher_alg'
./include/crypto/skcipher.h:182: warning: Excess struct member 'max_keysize' description in 'skcipher_alg'
./include/crypto/skcipher.h:182: warning: Excess struct member 'ivsize' description in 'skcipher_alg'
./include/crypto/skcipher.h:182: warning: Excess struct member 'chunksize' description in 'skcipher_alg'
./include/crypto/skcipher.h:182: warning: Excess struct member 'stat' description in 'skcipher_alg'
./include/crypto/skcipher.h:182: warning: Excess struct member 'base' description in 'skcipher_alg'
SKCIPHER_ALG_COMMON already has the documentation for all these fields.
Fixes: 31865c4c4db2 ("crypto: skcipher - Add lskcipher")
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Commit 42808e5dc602 ("crypto: hash - Count error stats differently")
moved some fields from 'struct shash_alg' into HASH_ALG_COMMON but
didn't remove the corresponding kerneldoc members, which results in
these warnings when running 'make htmldocs':
./include/crypto/hash.h:248: warning: Excess struct member 'digestsize' description in 'shash_alg'
./include/crypto/hash.h:248: warning: Excess struct member 'statesize' description in 'shash_alg'
./include/crypto/hash.h:248: warning: Excess struct member 'stat' description in 'shash_alg'
./include/crypto/hash.h:248: warning: Excess struct member 'base' description in 'shash_alg'
HASH_ALG_COMMON already has the documentation for all these fields.
Fixes: 42808e5dc602 ("crypto: hash - Count error stats differently")
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The thread-to-arbiter mapping describes which arbiter can assign jobs
to an acceleration engine thread.
The existing mappings are functionally correct, but hardcoded and not
optimized.
Replace the static mappings with an algorithm that generates optimal
mappings, based on the loaded configuration.
The logic has been made common so that it can be shared between all
QAT GEN4 devices.
Signed-off-by: Damian Muszynski <damian.muszynski@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Expose through debugfs ring pair telemetry data for QAT GEN4 devices.
This allows to gather metrics about the PCIe channel and device TLB for
a selected ring pair. It is possible to monitor maximum 4 ring pairs at
the time per device.
For details, refer to debugfs-driver-qat_telemetry in Documentation/ABI.
This patch is based on earlier work done by Wojciech Ziemba.
Signed-off-by: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Damian Muszynski <damian.muszynski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Expose through debugfs device telemetry data for QAT GEN4 devices.
This allows to gather metrics about the performance and the utilization
of a device. In particular, statistics on (1) the utilization of the
PCIe channel, (2) address translation, when SVA is enabled and (3) the
internal engines for crypto and data compression.
If telemetry is supported by the firmware, the driver allocates a DMA
region and a circular buffer. When telemetry is enabled, through the
`control` attribute in debugfs, the driver sends to the firmware, via
the admin interface, the `TL_START` command. This triggers the device to
periodically gather telemetry data from hardware registers and write it
into the DMA memory region. The device writes into the shared region
every second.
The driver, every 500ms, snapshots the DMA shared region into the
circular buffer. This is then used to compute basic metric
(min/max/average) on each counter, every time the `device_data` attribute
is queried.
Telemetry counters are exposed through debugfs in the folder
/sys/kernel/debug/qat_<device>_<BDF>/telemetry.
For details, refer to debugfs-driver-qat_telemetry in Documentation/ABI.
This patch is based on earlier work done by Wojciech Ziemba.
Signed-off-by: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Damian Muszynski <damian.muszynski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Extend the admin interface with two new public APIs to enable
and disable the telemetry feature: adf_send_admin_tl_start() and
adf_send_admin_tl_stop().
The first, sends to the firmware, through the ICP_QAT_FW_TL_START
message, the IO address where the firmware will write telemetry
metrics and a list of ring pairs (maximum 4) to be monitored.
It returns the number of accelerators of each type supported by
this hardware. After this message is sent, the firmware starts
periodically reporting telemetry data using by writing into the
dma buffer specified as input.
The second, sends the admin message ICP_QAT_FW_TL_STOP
which stops the reporting of telemetry data.
This patch is based on earlier work done by Wojciech Ziemba.
Signed-off-by: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Damian Muszynski <damian.muszynski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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GET_DEV() macro expansion relies on struct pci_dev being defined.
Include <linux/pci.h> at adf_accel_devices.h.
Signed-off-by: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Damian Muszynski <damian.muszynski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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No functional modification involved.
./drivers/crypto/intel/iaa/iaa_crypto_main.c:979:2-3: Unneeded semicolon.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7772
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Remove a stray newline in update_max_adecomp_delay_ns().
Reported-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In order for shared workqeues to work properly, desc->priv should be
set to 0 rather than 1. The need for this is described in commit
f5ccf55e1028 (dmaengine/idxd: Re-enable kernel workqueue under DMA
API), so we need to make IAA consistent with IOMMU settings, otherwise
we get:
[ 141.948389] IOMMU: dmar15: Page request in Privilege Mode
[ 141.948394] dmar15: Invalid page request: 2000026a100101 ffffb167
Dedicated workqueues ignore this field and are unaffected.
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The value of reqsize must only be changed through the helper.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The value of reqsize must only be changed through the helper.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The value of reqsize must only be changed through the helper.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The value of reqsize must only be changed through the helper.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The value of reqsize must only be changed through the helper.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The value of reqsize must only be changed through the helper.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The value of reqsize must only be changed through the helper.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Create a script for comparing tcrypt speed test logs.
The script will systematically analyze differences item
by item and provide a summary (average).
This tool is useful for evaluating the stability of
cryptographic module algorithms and assisting with
performance optimization.
Please note that for such a comparison, stability depends
on whether we allow frequency to float or pin the frequency.
The script produces comparisons in two scenes:
1. For operations in seconds
================================================================================
rfc4106(gcm(aes)) (pcrypt(rfc4106(gcm_base(ctr(aes-generic),ghash-generic))))
encryption
--------------------------------------------------------------------------------
bit key | byte blocks | base ops | new ops | differ(%)
160 | 16 | 66439 | 63063 | -5.08
160 | 64 | 62220 | 57439 | -7.68
...
288 | 4096 | 15059 | 16278 | 8.09
288 | 8192 | 9043 | 9526 | 5.34
--------------------------------------------------------------------------------
average differ(%s) | total_differ(%)
--------------------------------------------------------------------------------
5.70 | -4.49
================================================================================
2. For avg cycles of operation
================================================================================
rfc4106(gcm(aes)) (pcrypt(rfc4106(gcm_base(ctr(aes-generic),ghash-generic))))
encryption
--------------------------------------------------------------------------------
bit key | byte blocks | base cycles | new cycles | differ(%)
160 | 16 | 32500 | 35847 | 10.3
160 | 64 | 33175 | 45808 | 38.08
...
288 | 4096 | 131369 | 132132 | 0.58
288 | 8192 | 229503 | 234581 | 2.21
--------------------------------------------------------------------------------
average differ(%s) | total_differ(%)
--------------------------------------------------------------------------------
8.41 | -6.70
================================================================================
Signed-off-by: WangJinchao <wangjinchao@xfusion.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Provide an option in Inline IPsec configure mailbox to configure the
CPT_AF_LFX_CTL:CTX_ILEN for inline CPT LF attached to CPT RVU PF.
This is needed to set the ctx ilen to size of inbound SA for
HW errata IPBUCPT-38756. Not setting this would lead to new context's
not being fetched.
Also set FLR_FLUSH in CPT_LF_CTX_CTL for CPT LF's as workaround
for same errata.
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Register errors interrupts for inline cptlf attached to PF driver
so that SMMU faults and other errors can be reported.
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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HW has a errata that CPT HW may hit an issue, while processing CPT
instructions with CTX_VAL set and CTX_VAL not set. So, this patch
adds the code to always set the CTX_VAL as a workaround.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Updates CPT inbound inline IPsec configure mailbox to take
CPT credit threshold and bpid, which are introduced
in CN10KB.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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CPT LF must be reset and follow CPT LF disable sequence
suggested by HW team, when driver exits.
This patch adds code for the same.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Adds code to not execute CPT errata "when CPT_AF_DIAG[FLT_DIS] = 0 and a
CPT engine access to LLC/DRAM encounters a fault/poison, a rare case
may result in unpredictable data being delivered to a CPT engine"
workaround on CN10KA B0/CN10KB HW as it is fixed on these chips.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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On CN10KA B0/CN10KB, CPT scatter gather format has modified
to support multi-seg in inline IPsec. Due to this CPT requires
new firmware and doesn't work with CN10KA0/A1 firmware. To make
HW works in backward compatibility mode or works with CN10KA0/A1
firmware, a bit(T106_MODE) is introduced in HW CSR.
This patch adds devlink parameter for configuring T106_MODE.
This patch also documents the devlink parameter under
Documentation/crypto/device_drivers.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Scatter Gather input format for CPT has changed on CN10KB/CN10KA B0 HW
to make it compatible with NIX Scatter Gather format to support SG mode
for inline IPsec. This patch modifies the code to make the driver works
for the same. This patch also enables CPT firmware load for these chips.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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CPT block reset in CPT PF erase all the CPT configuration which is
done in AF driver init. So, remove CPT block reset from CPT PF as
it is also being done in AF init and not required in PF.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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There is error message when defer probe happens:
fsl_rpmsg rpmsg_audio: Unbalanced pm_runtime_enable!
Fix the error handler with pm_runtime_enable.
Fixes: b73d9e6225e8 ("ASoC: fsl_rpmsg: Add CPU DAI driver for audio base on rpmsg")
Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20231225080608.967953-1-chancel.liu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The kerneldoc comment for struct ethtool_fec_stats attempts to describe the
"total" and "lanes" fields of the ethtool_fec_stat substructure in a way
leading to these warnings:
./include/linux/ethtool.h:424: warning: Excess struct member 'lane' description in 'ethtool_fec_stats'
./include/linux/ethtool.h:424: warning: Excess struct member 'total' description in 'ethtool_fec_stats'
Reformat the comment to retain the information while eliminating the
warnings.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The kernel doc comments for struct ethtool_link_settings includes
documentation for three fields that were never present there, leading to
these docs-build warnings:
./include/uapi/linux/ethtool.h:2207: warning: Excess struct member 'supported' description in 'ethtool_link_settings'
./include/uapi/linux/ethtool.h:2207: warning: Excess struct member 'advertising' description in 'ethtool_link_settings'
./include/uapi/linux/ethtool.h:2207: warning: Excess struct member 'lp_advertising' description in 'ethtool_link_settings'
Remove the entries to make the warnings go away. There was some
information there on how data in >link_mode_masks is formatted; move that
to the body of the comment to preserve it.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove a couple of kerneldoc entries for struct members that do not exist,
addressing these warnings:
./include/net/sock.h:548: warning: Excess struct member '__sk_flags_offset' description in 'sock'
./include/net/sock.h:548: warning: Excess struct member 'sk_padding' description in 'sock'
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull ksmbd server fix from Steve French:
- address possible slab out of bounds in parsing of open requests
* tag '6.7rc7-smb3-srv-fix' of git://git.samba.org/ksmbd:
ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16()
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Revive proper alignment for the ksymtab and kcrctab sections
- Fix gen_compile_commands.py tool to resolve symbolic links
- Fix symbolic links to installed debug VDSO files
- Update MAINTAINERS
* tag 'kbuild-fixes-v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
linux/export: Ensure natural alignment of kcrctab array
kbuild: fix build ID symlinks to installed debug VDSO files
gen_compile_commands.py: fix path resolve with symlinks in it
MAINTAINERS: Add scripts/clang-tools to Kbuild section
linux/export: Fix alignment for 64-bit ksymtab entries
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Pull bcachefs fixes from Kent Overstreet:
"Just a few fixes: besides a few one liners, we have a fix for
snapshots + compression where the extent update path didn't account
for the fact that with snapshots, we might split an existing extent
into three, not just two; and a small fixup for promotes which were
broken by the recent changes in the data update path to correctly take
into account device durability"
* tag 'bcachefs-2023-12-27' of https://evilpiepirate.org/git/bcachefs:
bcachefs: Fix promotes
bcachefs: Fix leakage of internal error code
bcachefs: Fix insufficient disk reservation with compression + snapshots
bcachefs: fix BCH_FSCK_ERR enum
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Add a helper function to check if there are listeners for
thermal_gnl_family multicast groups.
For now use it to avoid unnecessary allocations and sending
thermal genl messages when there are no recipients.
In the future, in conjunction with (not yet implemented) notification
of change in the netlink socket group membership, this helper can be
used to open/close hardware interfaces based on the presence of
user space subscribers.
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Use enum instead of hard-coded numbers for indexing multicast groups.
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When freeing an object that was allocated from KFENCE, we do that in the
slowpath __slab_free(), relying on the fact that KFENCE "slab" cannot be
the cpu slab, so the fastpath has to fallback to the slowpath.
This optimization doesn't help much though, because is_kfence_address()
is checked earlier anyway during the free hook processing or detached
freelist building. Thus we can simplify the code by making the
slab_free_hook() free the KFENCE object immediately, similarly to KASAN
quarantine.
In slab_free_hook() we can place kfence_free() above init processing, as
callers have been making sure to set init to false for KFENCE objects.
This simplifies slab_free(). This places it also above kasan_slab_free()
which is ok as that skips KFENCE objects anyway.
While at it also determine the init value in slab_free_freelist_hook()
outside of the loop.
This change will also make introducing per cpu array caches easier.
Tested-by: Marco Elver <elver@google.com>
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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